electrical spec standard

8/18/2019 Electrical Spec Standard

http://slidepdf.com/reader/full/electrical-spec-standard 1/143



Public Works Authority ELECTRICAL SPECIFICATIONSTANDARD SCHOOL

ELECTRICAL SPECIFICATIONS

INDEX

CL. NO. TITLE PAGE NO.

PART 'A' - GENERAL ..................................................................................................................... 1 A.1 SITE ................................................................................................................................ 1 A.2 SITE CONDITIONS ........................................................................................................ 1 A.3 DEFINITIONS ................................................................................................................. 2

A.4 SCOPE OF WORKS ...................................................................................................... 3 A.5 COMPLIANCE WITH SPECIFICATION AND REGULATIONS ..................................... 4 A.6 ELECTRICAL SUPPLY SYSTEM .................................................................................. 5 A.7 PROGRAMME ................................................................................................................ 5 A.8 TENDER DRAWINGS ................................................................................................... 6 A.9 WORKING DRAWINGS ................................................................................................. 6 A.10 CO-ORDINATION OF DRAWINGS ................................................................................ 6 A.11 MATERIAL SUBMITTALS .............................................................................................. 7 A.12 LOCAL AGENT............................................................................................................... 7 A.13 MATERIAL INSPECTION ............................................................................................... 8 A.14 ALTERNATIVES ............................................................................................................. 8 A.15 SETTING OUT OF WORKS ........................................................................................... 8

A.16 SAFETY .......................................................................................................................... 8 A.17 CONTRACTOR'S LICENCE........................................................................................... 9 A.18 DAMAGE TO PLANT AND MATERIALS ....................................................................... 9 A.19 PROTECTIVE FINISHES ............................................................................................. 10 A.20 LABELS AND IDENTIFICATION .................................................................................. 10 A.21 WORKS TESTS AND CERTIFICATES ........................................................................ 11 A.22 OPERATION AND MAINTENANCE MANUALS .......................................................... 11 A.23 AS-BUILT DRAWINGS ................................................................................................. 11 PART 'B' - EQUIPMENT SECTION ............................................................................................ 11 B.1 TRANSFORMER .......................................................................................................... 11 B.2 MEDIUM VOLTAGE SWITCHBOARD ......................................................................... 12

B.3 SUBMAIN BOARD........................................................................................................ 33 B.4 DISTRIBUTION BOARDS ............................................................................................ 35 B.5 FUSE SWITCH AND ISOLATOR UNITS ..................................................................... 39 B.6 WIRES & CABLES ....................................................................................................... 40 B.7 CONDUIT AND CONDUIT FITTINGS .......................................................................... 49 B.8 CABLE TRUNKING ...................................................................................................... 54 B.9 CABLE TRAY ............................................................................................................... 57 B.10 WIRING ACCESSORIES ............................................................................................. 58 B.11 LIGHT FITTINGS .......................................................................................................... 69 B.12 EMERGENCY PACK FOR LIGHTING ......................................................................... 72 B.13 WIRING SYSTEMS ...................................................................................................... 72

B.14 INTERCOM SYSTEM ................................................................................................... 73 B.15 COMPUTER SYSTEM ................................................................................................. 75 B.16 QATAR CABLE VISION AND VIDEO SYSTEM ......................................................... 75 B.17 FIRE ALARM AND DETECTION SYSTEM .................................................................. 79




B.18 PORTABLE FIRE EXTINGUISHING SYSTEM ............................................................ 90 B.19 LIFTS ............................................................................................................................ 91 B.20 PUBLIC ADDRESS SYSTEM ...................................................................................... 94 B.21 FARASH CALL SYSTEM ( DELETED ) ...........ERROR! BOOKMARK NOT DEFINED.

B.22 AUTO CLASS CHANGE OVER SYSTEM ................................................................. 100 B.23 LIGHTNING PROTECTION SYSTEM........................................................................ 100 B.24 EARTHING AND BONDING SYSTEM ....................................................................... 102 B.25 BUILDING M ANAGEMENT SYSTEM……………………………………………………103

B.26 TESTING AND COMMISSIONING ............................................................................ 104 B.27 WARRANTY AND GUARANTEE ............................................................................... 109 B.28 SPARES FOR ELECTRICAL ITEMS ......................................................................... 110 B.29 SCHEDULE OF LIGHT FIXTURES ............................................................................ 111 B.30 SCHEDULE OF APPROVED MANUFACTURERS OF EQUIPMENT ....................... 118 B.31 SCHEDULE OF MOUNTING HEIGHTS .................................................................... 123 B.32 SCHEDULE OF DRAWINGS ..................................................................................... 140 B.33 TESTING AND COMMISSIONING ............................................................................ 126

ALL BELLS INSTALLED & WIRED ............................................................................................ 126

FUNCTIONAL TESTS ................................................................................................................ 126 CHECK MAIN MENU DISPLAY OK ........................................................................................... 126 SET CLOCK & CHECK OK ........................................................................................................ 126 CHECK MAIN FAILURE TO BATTERY OK ............................................................................... 126

ALL DUCT SMOKE DETECTORS INSTALLED & WIRED ........................................................ 128 FUNCTIONAL TESTS (With Power ON)……………………………………………………………..128 CHECK MAIN MENU DISPLAY OK ........................................................................................... 128 SET CLOCK & CHECK OK ........................................................................................................ 128

CHECK BATTERY VOLTAGE OK ............................................................................................. 128 PANEL INSTALLED PROPERLY ............................................................................................... 130 TESTING ………………………………………………………………………………………………..130 CHECK TRANSFORMER VOLTAGE OK .................................................................................. 130 CHECK EACH BELL PUSH WHETHER OK .............................................................................. 130 CHECK ALL SPEAKERS INSTALLED OK................................................................................. 131 FUNCTIONAL TESTS …………………………………………………………………………………131 CHECK POWER SUPPLY TO EACH EQUIPMENT OK ............................................................ 131 CHECK CASSETTE, CD PLAYER & FM/AM PLAYER WORKING OK .................................... 131

*******************************************




E - 1

PART 'A' - GENERAL

A.1 SITE

The site is located as indicated on the contract drawing titles.

A.2 SITE CONDITIONS

Unless otherwise specified, all the electrical equipment should be capable ofwithstanding the following site conditions:

i. Maximum Ambient Temperature : 50°C (Dry Bulb) in summer8°C ( -do- ) in winter

ii. Altitude : Sea level

iii. Maximum Relative Humidity : 95% to 98%

iv. Maximum Wind Velocity : 140 kms per hour

v. Prevailing Wind : North or North-westerly

vi. Storms : Dusty, sporadic & irregular

vii. Annual Rainfall : 50 mm between January & April

All equipment shall be rated for continuous operation, twenty four hours a day,seven days a week, throughout its normal rated life, except for routinemaintenance period.




E - 2

A.3 DEFINITIONS

The following terms and abbreviations used in these specifications/drawings shallmean :

Contractor : The Contractor appointed by the Client orClient's representative to carry out the worksas laid down in the tender drawings/Specifications.

Kahra-maa : Qatar General Electricity and Water CorporationDoha, Qatar.

Ooredoo : Ooredoo, Doha, Qatar.

Kahra-maa Regulations : Regulations issued by the Qatar GeneralElectricity and Water Corporation, Doha, QatarRegarding the installation of electricalequipment, wiring and air conditioning ofresidential and commercial buildings (latestedition)

Q.C.S. : Qatar Construction Specification 2010

I.E.E. Regulations : Regulations for electrical installations issuedby The Institution of Electrical Engineers

(16th Edition).

B.S.S. : British Standard Specification

B.S.C.P. : British Standard Code of Practice.

Tender Drawings : The drawings on which the tender is basedand schedules therein.

Working Drawings : The drawings prepared by the Contractor forthe purpose of execution of work at site.

As-built Drawings : The final drawings prepared by theContractor which is the true record of theactual work carried out at site.

Works : To include the provision of all equipment andmaterials and all works to be carried out bythe Contractor as per these specifications anddrawings for the satisfactory completion andoperation of the installation.

Site : The location where the works are to be

carried out.




E - 3

Engineer : The representative of the Client assigned tosupervise the work.

Approved : Shall mean approved by the Engineer in

writing.

Submitted : Shall mean submitted to the Engineer inwriting.

Accepted : Shall mean accepted by the Engineer inwriting.

Concealed : Shall mean hidden from normal sight inshafts, ceiling spaces, walls, slabs, partitions,screed or floor slab.

Exposed : Shall mean visible to normal sight.

Provide : Shall mean supply, install, test andcommission.

Install : Shall mean install, test and commission.

Furnish : Shall mean supply only.

A.4 SCOPE OF WORKS

The scope of works under this contract includes the supply, installation, testing andcommissioning of the electrical materials and equipments as per the specificationsdrafted in these sections and the tender drawings referred in the Schedule ofDrawings.

All the electrical equipments shall strictly comply with the regulations published inthe latest edition issued by the Kahra-maa, Q.C.S., Ooredoo and Fire Departmentof the State of Qatar. The Contractor shall provide complete installation of theproject and also include other associated works such as supporting structures,

ducts, manholes and ancillary works etc.

The detail of the scope of work is explained in the relevant section of thespecifications given elsewhere. A brief description of electrical works included inthese specifications is as follows :

i. Transformers

ii. M.V. panels

iii. Submain boards and Distribution boards

iv. Copper wires and cables for final circuits and submain power.

v. PVC conduit and conduit fittings for lighting, small power and auxiliaryservices.

vi. G.I. trunking and cable trays for cables and circuits.




E - 4

vii. Wiring Accessories

viii. Lighting fittings as per the schedule enclosed

ix. Emergency Pack for Lighting

x. Telephone System

xi. Computer System

xii. Qatar Cable Vision and Video System

xiii. Fire Alarm and Detection system

xiv. Fire Fighting System

xv. Lifts

xvi. Public Address System

xvii. Farash Call System

xviii. Auto Class Change Over System

xix. Lightning Protection System

xx. Earthing and Bonding Systemxxi. Testing and Commissioning

Connection Fee

The Contractor shall allow for the Kahra-maa connection fee in his price based onthe kW connected load of the project. However, if there is a change in the fee tariffby Kahra-maa at the time of construction / connection, the Contractor shall not bepaid for any additional cost.

A.5 COMPLIANCE WITH SPECIFICATION AND REGULATIONS

The Contractor shall supply all materials which shall be new and in a newcondition. The Contractor shall supply all the necessary skilled and non-skilledlabour to complete the works in accordance with the programme.

The installations shall comply with the following regulations :

i. The installation of works shall be as per the 6th edition and publication ofKahra-maa regulations, 16th edition of IEE regulations and Q.C.S 2010. Incase of contradiction, Kahra-maa regulations shall take precedence.

ii. The equipments shall conform to the British Standard Specifications & Codesof Practice (current editions including all amendments).

iii. If the Contractor wishes to use installations or equipments other thanspecified and conforming to different standards, then a written approval fromthe Engineer will be necessary.




E - 5

A.6 ELECTRICAL SUPPLY SYSTEM

The following supply system is prevailing at present in the State of Qatar.

* Supply : Alternating current

* Voltage : 415 volts on 3 Phase and 240 volts on 1 phase

* Frequency : 50 cycles per second (Hz)

* Number of wires : 4 (3 phases + 1 neutral) + Earth conductor

* Neutral : Full capacity as phase solidly earthed at mainswitchboard.

* Voltage Tolerance : 6%

Note :

All equipments shall be rated for 240 OR 415 volts, 50 Hz A.C. Equipments rated220/380 volts or 115/220 volts equipment will be rejected and Contractor shallhave to replace the same if detected at any stage of the contract. In caseContractor fails to replace the same within the stipulated time, the Engineerreserves the right to get it replaced from another agency at Contractor's cost.

A.7 PROGRAMME

The Contractor shall produce the work programme based on CPM or Barchartindicating the time required for various operations to complete the project in time.The following points shall be high-lighted in the programme.

i. Mobilisation

ii. Drawings/Submittals

iii. Approvals

iv. Equipment Deliveries

v. First fix

vi. Cabling

vii. Main/Sub-main Distribution equipment

viii. Second fix

ix. Fixing of light fittings

x. Testing

xi. Commissioning and Handing Over




E - 6

A.8 TENDER DRAWINGS

The Electrical tender drawings related to this project have been listed in theSchedule of Drawings enclosed with these specifications. The tender drawingshave been prepared to show the tenderer the principal equipment and generalarrangement required for this project. These drawings do not indicate every detailof work. It is the Contractor's responsibility to check the positions/locations at site. All dimensions are tentative and shall be checked with the Architectural andStructural drawings. Any discrepancy shall be brought to the attention of theEngineer at the time of tender.

The Contractor is deemed to have studied the services drawings and haveincluded in his price for all builders work associated with these drawings.

A.9 WORKING DRAWINGS

The Contractor after completing all contractual obligations shall prepare theworking drawings in a scale of 1 : 50 for Plans, 1 : 10 for Details and 1 : 200 forSite Plan. The Contractor shall project the following in the above drawings :

i. Actual conduit routes with circular junction boxes indicating the size ofconduit, number and size of wires it is carrying, where it is rising up orbending down etc.

ii. Separate drawing shall be prepared for Small power and Lighting systems.

iii. Reflected ceiling plans showing co-ordinated services, light fittings and otherancillary equipment such as Fire alarm, A.C. diffusers etc., with respect to theceiling.

iv. Mounting arrangement of light fittings, cables, cable trays, trunking, isolators,distribution boards etc.

v. Sectional views for co-ordinating the electrical wiring and other services i.e. Air conditioning, Drainage and Plumbing to the Engineer's requirements.

A.10 CO-ORDINATION OF DRAWINGS

The Contractor shall produce working drawings for building works required forservices showing the integration of all the services i.e. Electrical, Mechanical,Plumbing & Drainage.

The Contractor should ensure that all the working drawings are properly co-ordinated before submitting to the Engineer for approval. All the services shall beinstalled in such a manner so as to avoid conflict with each other and maintain theclearance required between each of them as per Kahra-maa regulations.




E - 7

A.11 MATERIAL SUBMITTALS

The materials offered for approval shall be strictly in accordance with the

specifications and tender drawings. The Contractor shall submit in triplicate, thetechnical literature for each item of equipment he intends to use at this project, tothe Engineer for the necessary approval. If in case the technical literature is notavailable, then a sample shall be submitted; in the absence of either of these,typed technical data shall be submitted, duly supported by telex/letter of themanufacturer for confirmation. In case of items involving aesthetics, like lightfittings, wiring accessories, smoke/heat detectors, exhaust fans etc., samples mustbe submitted for approval.

Each copy of the submittal shall be numbered and signed with the list ofequipment's, parts of equipment and the technical literature clearly marked in red,indicating the model, type and capacity of the equipment offered. The Engineer

shall retain two copies and return one, either approved or not approved, to theContractor.

The Contractor shall maintain a schedule of all the electrical equipment as per thefollowing proforma and submit a monthly report to the Engineer :

i. Submittal Number

ii. Equipment/Model Number

iii. Manufacturer/Local Agent

iv. Date of Approval

v. Date of Order/Order No.

vi. Mode of Delivery (Air, Land or Sea)

vii. ETA on site

viii. Status as on date of report.

A.12 LOCAL AGENT

The materials and equipments proposed by the Contractor shall be of a reputedmake represented in Qatar by a recognised local agent. The Contractor shallfurnish along with the submittal a letter from the local agent stating that :

a. They are the local agent in Qatar of the manufacturer (principal) along withproof of agency (a letter from the manufacturer). The local agent should beregistered with the Ministry of Commerce and Industry and agencyregistration number should be provided.

b. They have the facilities available for the repairing/servicing of the equipmentand they are either maintaining adequate stock of spares or shall arrange forthe same at short notice.

An undertaking to this effect shall be furnished mentioning the name of theparticular project.




E - 8

No materials and equipments shall be considered for approval which are notrepresented by local agents.

A certificate of origin should be provided by the local agent for the relevantmaterials.

A.13 MATERIAL INSPECTION

The Contractor shall inform the Engineer within one week upon receipt of all thematerials at site and arrange for the inspection of the same. Written approvalshould be obtained from the Engineer prior to using materials at site. Any materialused at site which is not approved earlier shall stand rejected without notice. TheContractor will have to remove the rejected materials from site and replace with

approved materials at his own expense. In the event Contractor fails to do so, theClient will have the liberty to carry out such works from other agencies and debitthe ensuing amount to the Contractor.

A.14 ALTERNATIVES

The tenderer has the liberty to submit with his tender the name of alternative firmsconsidered of equal performance which he wishes to offer. Such alternatives willbe considered by the Engineer in consultation with the Client before the tender is

accepted.

The acceptance of alternatives will be confirmed in writing by the Engineer. Duringthe execution of the contract, no alternative equipment, materials or fittings will bepermitted and the Contractor is fore-warned that any item provided by him which isnot up to the specification, must be replaced at his own expense. In cases wheretime will not permit, then such replacements shall be at the Client's convenience,but nevertheless at the Contractor's expense etc.

A.15 SETTING OUT OF WORKS

The location of switches and sockets as indicated on the tender drawings istentative and may require some variation to suit the site requirements. The exactpositions must be checked and shown on the detailed working drawings asindicated on the detailed Architectural drawings and co-ordinated with furnishingand other services.

A.16 SAFETY

The Contractor shall maintain all the safety procedures at site to protect man-

power and machinery. The temporary supply either generated or obtained fromsupply authorities shall be effectively earthed and protected with suitable earthleakage circuit breaker.




E - 9

The socket outlets used for construction shall be weather proof, industrial type withsuitable plugs etc. The cables and socket outlets shall be protected againstmechanical damage at site. The assembly of the socket outlets shall be properly

wired and mounted on purpose made racks fabricated out of sheet steel and angleiron. These racks shall be securely fixed on the wall at convenient places and shallalso be earthed. Wooden racks will not be allowed to be used for this temporarysupply.

The cables shall also be properly supported on the wall. Only those wires used forthe final connections from the socket outlets to the tools will be allowed to lie on thefloor preferably protected against mechanical damage. The Contractor shallprovide single line wiring scheme for the approval of the Engineer and carry out theworks strictly in accordance with the Kahra-maa regulations. The Contractor shallprovide a 240V AC supply for the use of all temporary lighting and power tools onsite.

The whole of the works shall be carried out with care and so arranged as tominimise the risk of fire and the extent of damage resulting from any outbreak offire. The Contractor shall provide adequate guards to all moving parts of the plantwhether particularly specified or not.

A.17 CONTRACTOR'S LICENCE

The Contractor shall ensure that the Sub-contractor appointed for Electrical worksshall have the valid licence from Kahra-maa. The grade of licence shall also be in

accordance with the total load of this project.

The Contractor shall submit the qualifications and experience particulars of theElectrical Engineer, Electrical Foreman and Electricians to be employed on theproject to the Engineer for approval. Once approval is obtained, the Contractorshall not replace the staff from site. In case the same becomes necessary, a re-approval should be obtained and the new staff shall continue working with the oldstaff for a minimum period of 30 days before the latter is withdrawn from site.

A.18 DAMAGE TO PLANT AND MATERIALS

Any plant or material which is damaged by any means whatsoever, shall not beused in the works.

Should the Contractor wish to rectify such damage in order to utilize the plant ormaterials in the permanent works, the matter shall be brought to the attention ofthe Engineer, who in turn shall conduct a proper survey after which the necessaryinstructions will be issued. Only after obtaining a written permission from theEngineer shall any remedial work be carried out.

Any damaged plant or material allegedly brought to a "as-new" condition followingsuch a procedure, shall only be accepted at the discretion of the Engineer, whosedecision in such matters shall be final.




E - 10

A.19 PROTECTIVE FINISHES

The protective finishes must be provided on all materials and equipment used in

this contract to ensure that no deterioration is caused by the interaction of localclimatic conditions. All materials shall be inspected by the Contractor or hisrepresentative before shipment to ensure that the finishes are in accordance withthe specifications.

The Contractor shall be responsible for the safe storage of materials on site andprovision of such covering as may be necessary to ensure that on completion, allitems are handed over in a sound condition with all protective finishes undamaged.

A.20 LABELS AND IDENTIFICATION

All main switches, isolating switches, distribution boards and main switch boardsshall have affixed to the outside by means of four small round-head screws, labelsof not less than 50 x12 mm high, engraved with 5 mm black lettering to indicate thepurpose of the switch or distribution board. The labels shall be of white/black/whitetraffolyte. The minimum height of lettering for switchgear equipment shall be 10mm.

Contractor to provide an A2 size drawing showing the schematic diagrams forElectrical and Fire Alarm Systems. The electrical schematic shall be framed andfixed in the MV room at a location to be agreed with the Engineer. For fire alarm,

the same shall be fixed next to the fire alarm panel.

Each distribution board shall be provided with type-written or printed circuit list oncartridge paper protected overall by thin perspex sheet and fixed to the inside ofthe door. The circuit list shall give the number and details of points served by eachcircuit and the rating of the fuse or circuit breaker. Sample lists shall be submittedto the Engineer for approval before installation.

Each underground cable shall have its size and feeder's name engraved/punchedon an aluminium strip 12 mm wide of 16 gauge thickness and shall be tightened oneach end where cables enter/come out of trench or soil.

All the accessible switch boards, distribution boards, lids, covers and door of anyequipment which contains terminals or conductors connected to more than onephase, shall be provided with warning plate - "DANGER 440 VOLTS" having 12mm red letters on white vitreous enamel plate. The method of fixing shall be asdetailed above.

All conductors shall have their outer covering coloured to the phase colour to whichthey are connected. An instruction notice giving details of First Aid Treatment forelectric shock shall be positioned in each switch room. Manufacturer's orContractor's names or trade marks shall not be exhibited anywhere through theinstallation without the prior approval and permission of the Engineer with theexception that the Contractor's name, address, telephone number and contactperson shall be fixed in the main switch room at the appropriate position.




E - 11

A.21 WORKS TESTS AND CERTIFICATES

As per Qatar construction specifications (Q.C.S).

The Contractor shall supply all the Test certificates in original to the Engineer at thetime of handing over the project.

A.22 OPERATION AND MAINTENANCE MANUALS

The Contractor shall provide six copies in the form of bound documents theoperating instructions and Maintenance manuals with printed name of the project,

consultant and contractor on the cover indicating the following :

i. Step to step operating procedures.

ii. Preventive maintenance schedule.

iii. Technical literature

iv. Spare parts list

v. Manufacturer's name, address, fax no., telephone no., and contact person.

vi. Work test certificates, if any.

vii. Routine test results carried out at site.

A.23 AS-BUILT DRAWINGS

After the working drawings have been approved, no alteration to the drawings shallbe carried out without the consent of the Engineer. These changes shall besupported by sketches and incorporated on the 'As-built' drawings which are to besubmitted to the Engineer within one month of completion of the project.

Two sets of process negatives along with three sets of drawings shall be submittedafter approval of the Engineer for onward submission to the Client. A set ofcomputer CD’s should also be provided for all the as-built drawings.

PART 'B' - EQUIPMENT SECTION

B.1 TRANSFORMER

The Contractor shall include for the supply, installation, testing and commissioningof an oil type transformer 11 kV / 415 volt for the 2x1600 kVA rating as specified onthe contract drawings. The detailed specifications for the transformer shall have to




E - 12

be obtained from Kahra-maa by the Contractor. The Contractor shall obtain Kahra-maa approval before buying the transformer. After installation of the transformer,the testing and commissioning shall be carried out as per Kahra-maa regulationsand shall be approved by them.

The single core secondary cables from the transformer to the M.V. panel incomershall be laid by the Contractor. However, the H.V. cables shall be laid by Kahra-maa.

UPVC Ducts

The underground ducts or sleeves shall be of UPVC to BS 4660 and GCCspecifications. The minimum wall thickness of ducts shall be as under:

* 160 mm diameter : 3.6 mm

* 110 mm diameter : 2.4 mm

The UPVC pipes, all parallel sockets and long radius bends shall be of high impactresistance of minimum impact strength of 4.6 to 5.5 joules with colour code Blackor Grey and to Kahra-maa approval.

All underground ducts shall be installed 600 mm below ground and wherever roadcrossings, it shall be encased in concrete and with slow radius bend at the endswith appropriate pull cord in each duct.

B.2 MEDIUM VOLTAGE SWITCHBOARD

General

The Contractor shall supply, erect, install, test and commission a medium voltageswitch board, factory assembled, front accessible and by a Specialistmanufacturer. The switch board shall be suitable for operating on a 3 phase, 4wire, 415 volts, 50 Hz supply. The ampere rating of the panel shall be as indicatedon the drawings.

The symmetrical fault rating shall be of minimum 44 kA for 3 seconds. The whole

of the switch board shall be type tested, assembly in accordance with IEC 60439-1Standard covering verification of the following seven tests on the same panelconfiguration from an internationally, recognised testing laboratory.

1. Temperature rise limits2. Short circuit withstand strength3. Dielectric properties4. Effectiveness of protection circuit.5. Clearance and creepage distances6. Mechanical operation7. Degree of protection for the enclosure

Copies of the test certificates shall be submitted for Engineer’s approval.




E - 13

All the equipment like ACB, MCCB, relay etc., shall be of the latest technologyhaving latest protection and metering system.

The switchboard shall be totally compartmentalised and manufactured to BS EN

60439-1, IEC 439-1, Form 3B Type 2.

The switchboard shall be so designed to ensure safety during operation, inspectionand maintenance and so arranged to minimise the risk of fire arising andspreading.

The switchboard shall comprise all equipment necessary to control all associatedservices including all instruments, interlocking, CTs, auxiliary fuses, relays, controlwiring and interconnections.

The switch board shall be of the free standing cubicle pattern having rear, top andbottom access. It shall not be possible to access live parts from the front of the

switch board. It shall be sectionalised to facilitate easy transport and erection.

The switch board shall be of robust construction, fabricated from heavy gaugefolded steel angles strengthened by horizontal and vertical folded channels. Thethickness of structure shall be as per the ASTA certificate issued for the proposedpanel.

The framework shall be enclosed in self-supporting, screw-on front, rear and topcovers of sheet steel with gaskets. Covers shall be of a minimum of 1.6 mm (16swg) thick sheet steel. The doors shall have concealed hinges provided withgaskets.

The height of the switch board shall be limited to 2200mm unless specificallyrequired to meet the site constraints and approved in writing by the Engineer. Themanufacturer of the switch board shall provide at a height of not less than 900mmfrom the cable glanding plate, a purposely installed cable connection arrangementwith terminals suitably marked and identified for the incoming cables to theapproval of Kahra-maa.

The structure shall be protected from rust and oxidisation. The paint shall beapplied to rust and grease free surface of metal. The steel shall be electro-zincplated (ZINTEC) and must have a minimum of priming coat, undercoat andfinishing coat. The undercoat and finishing coat shall be stove enamelled. Thefinished paint colour code number as per appropriate B.S. shall be selected frommanufacturer's range with the Engineer's approval prior to manufacturing.

All busbars shall be 3 phase and full neutral and shall comply with B.S. 159. Theyshall be of high conductivity rectangular section, hard-drawn copper, electrolyticgrade suitably marked and colour coded PVC sleeves in accordance with B.S. 159or epoxy painted with thickness 80 to 100 micron. The material of the PVC sleevesshall be fire retardant of 1.2 mm thick.

The short circuit ratings of the bus bars shall be as stated above. All the busbarsshall be provided with bolts, nuts, pressure type flat washers and spring washers atall joints. The jointing of bus bars shall be carried out by special torque wrench to

the pressure recommended by the relevant B.S.

The switchboard shall be so arranged that the bus bars are accessible withoutremoving any ACB, fuse switch, isolator or MCCB.




E - 14

Insulators for busbar supports shall be non-hygroscopic and of non-ageing materialand shall be able to withstand the designed fault current referred above.

All interconnections shall be of copper bus bars. These connections shall be so

arranged that they do not obstruct the access to cable terminations.

The switch board shall be complete with all necessary sealing chambers and cableconnecting (glanding) plates to terminate all incoming and outgoing cables. Wheresingle core cables are required to enter the switch board, a removable non-ferrousgland plate shall be provided.

The outgoing MCCBs shall be located in their own compartments completelysegregated from all other parts of the switch board with front access and thehandle shall be door inter-lockable and pad-lockable.

All outgoing circuits shall be prewired back to a purposely installed cable

connecting bar located 600mm above the base of the panel and suitably inscribedwith feeder name or number.

Cable boxes, glands and lugs shall be supplied and installed as applicable for eachmain or submain cable entering or leaving the cubicle. Cable glands shall be asnear to the terminations as possible but enough space shall be allowed toterminate cables.

Cable glands shall be of brass and compression type to suit the size of cable.

Where termination chambers are provided for outgoing cables, terminations shallconsist of adequately fixed threaded cadmium plated steel studs to which cable

lugs shall be fixed with nuts and washers.

Control wiring within the cubicle shall be in accordance with B.S. 6004 or B.S. 5467and shall be neatly arranged and cleated. Cleats shall be fixed to the switch boardstructure at sufficient intervals to avoid cable sag. Adequate cable loops must beallowed to accessories on doors to avoid cable stretch.

Control wiring within the switch boards shall be a minimum 2.5 sq.mm andprotected by HRC fuses of 20A mounted directly on the bus bars in an accessiblelocation. The bus bar shroud shall be extended around the fuse bases to preventaccidental contact with the bus bars while replacing the fuses.

If a special chamber is required, e.g. to accommodate the panel manufacturer'sCTs or to provide essential, non-essential services (split bus bars) this will beindicated on the diagram of distribution. Each bus bar chamber shall beconstructed to withstand the fault rating as laid down by Kahra-maa.

The neutral bus bars shall be linked to the earth bus bars. These links shall beremovable. The earth bar shall be a minimum of 300 sq. mm or 50% of phase busbar and continuous throughout the length of the panel.

Under no circumstance, a common earth/neutral bar will be accepted.

All earth bars shall be so mounted that there is no restriction to the cable access bythe structure / frame work. If required, cable trays shall be mounted to support thecables.




E - 15

The cubicle protection shall be IP 42 to BSEN 60529.

The switch board manufacturer shall be deemed to have included in his price forcompliance with Kahra-maa regulations for all internal wiring, connections, earthing

tapes, meters and instruments etc.

Drawings

The manufacturer shall submit to the Engineer before manufacture, detail drawingsshowing the layout, construction, dimensions, weights and connections of theswitch board. Unless otherwise instructed, no manufacturing work is to be carriedout until the drawings have the Engineer's and Kahra-maa approval in writing. TheContractor shall approach Kahra-maa for approval after obtaining approval fromthe Engineer.

Labels

Each item of equipment shall be provided with a label, the exact wording to beagreed with the Engineer. The label shall be made of traffolyte with black letteringon a white background and shall be screwed to the switch board. The minimumheight of lettering shall be 6mm.

Forms for Panel

The forms for the assembly of switch board and dividing of assemblies by barrier orpartitions, metallic or non-metallic into separate sub-compartments shall be

according to BSEN 60439-1.

Note : Moulded case circuit breaker (MCCB) shall not be used withoutcompartmentalisation in Form 3 and 4 panels. The body of MCCB shallnot be considered as separation of all functional units.

Air Circuit Breakers

Air circuit breakers shall be fully withdrawable type, motor operated mechanism, 3pole with solid neutral suitable for 3 phase, 415 volts, 4 wires, 50 Hz alternatingcurrent supply as indicated on the drawings.

ACBs shall be of the horizontal withdrawable, load making and breaking type withthe contacts being of the double break pattern with arcing chutes, shutters etc.The main arcing contacts shall be of the high pressure butt type with wipe and rollaction on opening and closing. The main contacts shall be of silver alloy.Removable arc chutes shall be fitted together with an air circuit breaker. ACB shallbe complete with a mechanical ON/OFF position indicator, pad-lockable. ACBshall conform to B.S. EN 60947-2 (EN 60947-2, IEC 947-2) and B.S. EN 60664-1.

Each circuit breaker shall be enclosed in sheet steel and provided with three phase

manual and automatic isolating devices suitably interlocked so as to preventisolation except when the circuit breaker is in open position. It shall be arranged insuch a manner that it will not be possible to withdraw the breaker or remove the




E - 16

front cover unless the ACB is in the isolated position. Provision shall be made forlocking the ACB in this position (isolated position).

Shutters shall be provided to protect the live terminals against accidental touch

when the ACBs are in a fully withdrawable position. The ACB shall have solidstate overload and short circuit protection devices along with earth fault tripmechanism. The solid state circuit shall be provided with proper LED indication toindicate the trip status of the ACB. The ACBs shall be equipped with shunt trip of30V DC trip mechanism for tripping the breaker with restrictive earth fault relay tobe provided separately with suitable size of CTS.

The ACB shall have adjustable settings and following facility:

* Long time current setting and tripping delay.

* Overload signal

* Short time pick up and tripping delay

* Instantaneous pick-up.

* Earth leakage or earth-fault pick-up and tripping delay with OFF position

* Earth leakage test button

* Long time rating plug screw

* Test connector

* Lamp test, reset and battery test

* Indication of tripping cause

* Setting / programmable buttons

The ultimate breaking capacity (ICU) shall be minimum of 44 kA for 3 seconds.The rated service breaking capacity (ICS) and rated short time withstand current(ICW) shall be equal to or greater than ICU.

The ACB section of the switch board shall be in separate cubicle separated fromother parts of the switch board. This section shall not have any outgoing feeders.

The gland plate for the incoming cables shall be non-ferrous material with brasscompression type glands, earthing tags and shrouds. In case single corePILCA/PVC cables are used, the clamping arrangement is to be supplied as perthe sketch nos. 9 & 10 shown on pages 144/145 of Kahra-maa regulations.

Outgoing Feeders

Moulded Case Circuit Breaker

Contractor to provide MCCB's as indicated on the tender drawings for the outgoingfeeders. They shall be triple pole, 415 volts, 50 Hz, with magnetic short circuit andthermal over load protection complying with BS EN 60947-2.

MCCB shall be of interrupting rating as indicated below and conform to Kahra-maa

regulations. In case these MCCB's do not meet with required fault level, thecurrent limiting device shall be used in series with them as per Kahra-maaregulations Table No.1.




E - 17

The following fault levels of MCCB can be used in the MV panel :

High Interrupting Capacity Breakers (Moulded Case)

Frame Size Voltage Rating Breaking Capacity (KA)

160 A 660 35250 A 660 50400 A 660 50630 A 660 50800 A 660 60

Thermal magnetic adjustment for standard and high Interrupting circuitbreakers (MCCB)

Circuit Breaker 100-125A 160A 250A 400A 630A

Rated Voltage 660 V 660 V 660 V 660 V 660 V

Thermal 100A70-100 100A 63-100 200A 140-200 250A 187-250 400A 300-400Setting 320A 240-320 500A 375-500

Adjustable

Thermal From To (A) 125A 94-125 160A 100-160 250A 175-250 400A 300-400 630A 472-630

MagneticRelease Magnetic Fixed Fixed 200A 1000-2000 250A 1250-2500 400A 2000-4000

Setting 320A 1600-3200 500A 2400-5000 AdjustableFrom To (A) Fixed Fixed 250A 1250-2500 400A 2000-4000 630A 3200-6300

Note : Loads which may have peaks of comparatively short duration above itsrated value, e.g. motors, capacitors etc. Circuits feeding such apparatusare called fluctuating load circuits and such circuits shall be protected by

miniature circuit breakers for fluctuating load circuits. For these loads, thecircuit breakers shall have time/current characteristics that will allow thetransient overcurrent to be carried without tripping or derate the size ofMCCB to take care of this transient current as recommended by themanufacturer.

D.C Supply

30V D.C. supply is required for tripping of the LV ACBs through D.C. shunttrip for restricted earth fault relay. Contractor to provide for this unit completewith trickle charger and long life nickel-cadmium batteries. The unit shall be

designed to operate on 240V,1 Phase, 50 Hz A.C. supply and for continuousduty at an ambient temperature of 50ºC. and 98% relative humidity. Thecapacity of the unit is to be determined by the manufacturers and based onnumber of trip units.

Meters and Instruments

Provision shall be made in the M.V. cubicle main switch board for the installation ofthe metering equipment, located in a separate cubicle above the main incomer.

The panel manufacturer shall supply and install their current transformers completewith wiring to the future Kahra-maa meter positions. All CTs shall be Class 'B' andlocated on the main busbars immediately after the main incoming switch/breaker




E - 18

so as to facilitate the metering at source in future. The CTs shall be positioned onremovable links.

Meters and instruments shall be housed in separate compartments and shall

conform to the requirements of B.S. 37, 89 Part 1, B.S. 90, B.S. 3938, 3941, 142and B.S. 3693 Part 1.

All meters and instruments shall be flush mounted on the facia of the switch boardso that all will be easily visible and accessible and be of the following type.

3 nos. : Ammeter suitably scaled with maximum demand indication (max.demand dead pointer)

1 no. : Voltmeter, 0 - 500 volts, with OFF, phase to phase and phase to neutralselector switch and cartridge fuses.

4 nos. : Current transformer, -/5A, 5VA burden and Class 1 accuracy for

ammeters.

6 nos. : Current transformer -/5A, 5VA burden and suitable accuracy for kWHmeter. The CTs shall be capable for dual reading (i.e. 2000 A and 2500 A)

3 sets : HRC type control fuses; maximum rating - 20A; bus-bar mounted.

9 sets : HRC control fuses, 6A (carrier 20A) for future kWH meter.

1 no. : Restrictive earth fault relay - 10 to 40% or 20 - 80% setting with timedelay and complete with a set of four current transformers

3 nos. : 30 volts DC shunt trip with auxiliary switch.

3 sets : Red, Yellow and Green indicator lamps to give phase indication withcontrol fuse.

1 set : Trip alarm with acceptance and reset push buttons (alarm bell to belocated outside the panel board).

2 sets : Cable box/terminals for control cable to provide inter-tripping interlockfacility between H.V. and L.V. circuit breakers.

1 set : Test Terminals for maintenance purposes

The class and accuracy required shall be Class 3 for metering includinginstruments and recorders and Class 5 P10 for protection.

All the breakers, ACBs, MCCBs and other electrical components of the panel shallbe calibrated to 50°C ambient temperature for use in the State of Qatar.

POWER FACTOR CORRECTION CAPACITOR BANKS

1. SCOPE:

This specification covers the design, manufacture, assembly, testing at the manufacturer’sworks at country of origin before dispatch, installation, site testing and commissioning etc., of

Automatically Switched Low Voltage Capacitor Banks to be installed and connected to theMain LV Distribution Boards in order to improve the power factor and maintain between 0.95lag and unity, as per KHARAMAA regulations.




E - 19

2. TYPE:

The power factor correction capacitor banks shall be three phase, of modular design, shall beswitched ON/OFF automatically in steps through the use of Electromagnetic Contactors

designed for capacitor switching depending on the type of electrical loads and shallincorporate series reactors to prevent amplification of system harmonics and resonance.

3. NORMAL RATING:

The normal rating of the Capacitor Banks shall be the maximum continuous rating under theworst temperature conditions encountered in Qatar (i.e., at 50

oC). The capacitors banks,

series reactors, power factor controllers, power quality meters, switchgear and otherequipment called for in this specification must give continuous and trouble free service underthe arduous temperature conditions mentioned above.

4. APPLICABLE STANDARDS

Unless specified otherwise the capacitor banks shall conform in design, material, constructionand performance to the latest editions of the IEC standards, their corresponding British /European (BS EN) standards and in particular to the following publications :

IEC 60831-1 & 2: Shunt power capacitors of the self-healing type for A.C. systemshaving a rated voltage up to and including 1000 V.

IEC 61921: Power capacitors – Low voltage power factor correction banks.

IEC 60076-6: Power transformers - Part 6: Reactors

IEC 60085-1: Electrical insulation – Thermal evaluation and designation.

IEC 60664: Insulation coordination for equipment within low-voltage systems.

IEC 60439-1: Low-Voltage Switchgear and Control gear Assemblies - Part 1:Type- Tested and Partially Type-Tested Assemblies.

IEC 60947-1: Low-voltage Switchgear and Control gear - Part 1: General Rules

IEC 60947-2: Low-voltage Switchgear and Control gear - Part 2: Circuit-Breakers.

IEC 60947-4-1: Low-voltage Switchgear and Control gear – Part 4-1: Contactorsand Motor-starters.

IEC 60529: Degree of protection provided enclosures (IP code)

IEEE 519-1992: IEEE Recommended Practices and Requirements for HarmonicControl in Electric Power Systems.

In addition to the above listed standards, the regulations for electrical installations issued byKAHRAMAA shall also be adhered to.

5. DRAWINGS AND INFORMATION

The contractor shall furnish the following drawings and documents along this submittal forapproval:

1. Dimensioned drawing showing outline of the capacitor bank.2. Single line diagram showing all the major electrical components.3. Protection and control schematics of the capacitor bank




E - 20

4. Details of cable terminations and fittings.5. Foundation plan, including foundation loading.6. Original catalogues for various proposed components.7. Type test certificates of all the major components including the capacitor bank.8. Technical Manual giving installation, operation and maintenance instructions

9. Schedule of recommended spare parts.

6. CAPACITOR UNITS:

The capacitor units shall be dry, self-healing type with individual and internal dischargeresistors shall be protected against internal faults, over pressure, etc. and shall fully complywith and tested to the requirements of the International Electro-technical CommissionPublication No IEC 60831, Part-1 and Part-2.Each coil must have 3 internal protections:

• self healing of the film • electrical fuse • overpressure device

The capacitor units will be installed in an electrical distribution system having system voltageof 415 volts (System highest voltage 457 volts) and shall be rated at 525 volts due to thevoltage rise caused by connecting the detuned series reactors.

The ambient temperature category of the capacitor units shall be -25/D as per the IECPublication No. 60831, Part-1, but as mentioned under Cl.2, the normal rating of thecapacitor banks shall be the maximum continuous rating under the worst temperatureconditions encountered in Qatar (i.e., at 50

oC).

The capacitors shall be completely leakage proof and of dry type construction without anyfilling of jelly, wax, etc. They shall be of the self-healing type utilizing low-loss metalizedpolypropylene film dielectrics.Unit coils must be coated under vacuum to insure no air or humidity remains close to the

electrical part.The capacitor element casings shall be from Aluminum a self-extinguishing polyurethaneresin casing or high temperature withstanding material.

Each unit coil capacitor element shall have an internal HRC fuse combined with a secondarysolid foil electrode to ensure safe disconnection from the circuit at the end of its normalworking life.

Each unit coil shall be provided in such a way to automatically disconnect the capacitor unitfrom supply if excessive pressure is generated inside the unit.

The capacitors shall have permanently connected built-in discharge resistors to ensure safedischarge of the capacitors to less than 50 volts in 1 minute after switch off.

The total losses including discharge resistors to be less than 0.5 Watt/KVAR.

The capacitors shall be rated for a minimum of 130% continuous current overload and 110%continuous voltage overload based on the Rated Voltage of the capacitors.

7. SERIES REACTORS TO PREVENT AMPLIFCATION OF SYSTEM HARMONICS

The three phase series reactors to be connected in series with each capacitor unit forharmonic current suppression and to prevent resonance shall be iron cored type with copperwindings. The reactor shall comply with the IEC Publication No. 60076-6.

The current ratings of the Reactors shall be increased suitably to take into account the effectof harmonics in the networks which could be generated by variable speed drives, dimmers,elevators, UPS system, fax machines, computers, fluorescent and other discharge lamps,




E - 21

etc. The offered Reactors shall be tested by harmonic current generating test equipmentwith magnitudes corresponding to the maximum harmonic current magnitudes measured inany distribution system. All necessary test reports for such tests and measurements shallbe submitted to the Purchaser for scrutiny and record purposes.

The reactor insulation shall be Class “H” rated at 180oC to IEC 60085-1. The maximumtemperature of the reactor at maximum continuous RMS amperage shall be no higher than145

oC with a 45

oC ambient. The maximum continuous RMS amperage of the reactor shall

be sized to match the maximum continuous RMS amperage of the capacitors. The minimumreactor Q factor shall be 25.

The Reactors shall be equipped with snap action thermostats to trip at 160oC and shall be

wired to the associated controller output contact. In the event of a reactor Over Temperaturethe stage contactor shall open. There should be an option of automatic re-closures orlatching action.

The Capacitors and the Reactors combination shall be tuned below the lowest harmonicpresent in a particular distribution system.

8. CIRCUIT BREAKERS:

The capacitor bank shall have a suitably rated circuit breaker at the incomer. The circuitbreaker shall be a three pole ‘MCCB’ and shall fully comply with the requirements of the IEC60947-1 & 2. They shall be rated for a minimum insulation voltage of 660 V and designedfor 52 degrees C ambient temperature. The current rating shall be at least 1.5 times the fullload current of the capacitor bank and have a mechanical endurance of a minimum 1000operations. It shall have a rotary front operating door mounted handle and should beinterlocked with the door to ensure that the capacitor bank is de-energized when door isopen.

Each stage of the capacitor bank shall also have a suitably rated circuit breaker. The circuit

breaker shall be adjusted to trip if the RMS current of the stage exceeds 130%.

9. ELECTROMAGNETIC CONTACTOR:

The electromagnetic contactors shall be 690 Volts rated, of 3-pole type suitable forswitching 'on' and switching 'off' operations of capacitor banks and shall comply with therequirements of the IEC 60947-1 & 4-1. The supplier shall choose a contactor of a suitableoperational current rating taking into consideration the inrush current and the specialconsiderations of capacitor switching duty. Incidence of higher inrush current in the case ofsuccessive switching of capacitor banks shall also be taken into account.

The supplier shall furnish data sheet of contactor in support of proper selection of thecontactor rating including the making and breaking current ratings. The contactors shall

isolate all three supply phases to the capacitor on switch off.

The rated voltage of control coil shall be 415V (phase-to-phase). This voltage is subject to avariation of (+) 20% and (-) 40%. The contactors shall work satisfactorily within this voltagerange. The pick up voltage of coil shall be 60% and drop out voltage shall not be more than50% of rated voltage.The mechanical endurance of the contactors shall not be less than 3 million operatingcycles at no load. The electrical endurance at normal utilization duty for capacitor shall notbe less than 200,000 operations.

The contactors shall be subjected to routine and type tests as described in IEC 60947.

TDD / THD CALCULATIONS:

With capacitors and reactors connected in series it should be proved through submission ofsoftware simulations / calculations that the Total Demand Distortion (TDD) / Total




E - 22

Harmonic Distortion (THD) is within the limits as specified in IEEE Std 519-1992, standardson IEEE recommended practices and requirements for Harmonic Control in Electric PowerSystem.

If the TDD / THD limits are exceeded even with the use of the detuned capacitor banks,

then suitably rated Active Harmonic Filters shall be proposed in conjunction with thedetuned capacitor banks to limit the TDD / THD below the specified limits in IEEE 519.

10. ACTIVE HARMONIC FILTERS FOR HARMONIC CURRENT FILTERATION :

The Active Harmonic Filters shall work on the principle of measurement of harmoniccurrents and generate actively a harmonic spectrum in opposite phrase to the measureddistorting harmonic current thereby canceling the original harmonics.

a) The rating of the Active Harmonic Filters shall be so selected that the Total HarmonicVoltage Distortion at the point of common coupling is brought down to below the TotalDemand Distortion (TDD) limits specified in IEEE 519. Extracts of IEEE 519 is as

shown below:

b) Should there be large a component of single phase non linear loads present in adistribution system ( offices, shopping malls etc) then measurements / calculationsmust be carried out to ascertain the magnitude of the third harmonic current.Provisions shall be made for a 120A, 3 Phase, 4 wire active harmonic filters.

c) Should there be large a component of three phase non linear loads present in adistribution system ( Industrial loads with VFD’s etc) then measurements / calculationsmust be carried out to ascertain the magnitude of the third harmonic current.Provisions shall be made for a 300A, 3 Phase, 3 wire active harmonic filters.

d) The Active Harmonic Filters shall be of parallel configuration.

e) The Active Harmonic Filters shall monitor all three phases of the low voltage linecurrent in real time by means of a Digital Signal Processor (DSP).

f) The output of the DSP unit in combination with a micro-controller based system shallgenerate a pulse width modulated (PWM) signal to control power modules based onIGBT (Insulated Gate Bipolar Transistor) technology which act as a current source.




E - 23

g) The PWM signal shall be of fixed switching frequency.

h) The system shall be operated under closed loop control and shall have a maximumresponse time of not more than 40 milliseconds. The control system shall be such that

the Active Filter cannot be overloaded.

i) Simultaneous filtering shall be provided for all harmonics up to the 50th one.

j) The filtering efficiency shall be typically of better than 97%.

k) The operating power factor of the Active Harmonic Filters shall be programmable overthe range 0.7 capacitive. Both fixed and dynamic reactive power compensation shallbe available for selection by the programmer.

l) The Active Harmonic Filters shall be protected against over current, short-circuit,thermal overload and IGBT bridge abnormal operation.

m) The design of the Active Harmonic Filters shall be such that the current rating of thefilter system can be increased by the addition of extra power modules.

n) Optional graphic monitoring of the wave shape shall be provided.

o) Optional on-line harmonic analysis shall be provided.

p) After the installation of the Active Harmonic Filters, harmonic measurements shall becarried out by the Contractor to prove that the Total Harmonic Distortion is within IEEE519 limits as confirmed by the tenderer, at the time of award of the Contract.

11. AUTOMATIC POWER FACTOR CONTROLLERS:

The automatic power factor controller shall be microprocessor based VAR Sensing type andshall comply with IEC 61326. The controller shall be able to sense the reactive currentrequirement and switch on / off to the required stage of the capacitor bank.

a) The automatic power factor controller shall maintain a targeted power factor within 0.95lagging and unity.

b) The controller shall be programmed to have different switching sequences. In general, for500 KVAR Capacitor Banks the sequence shall be 1:1:2:2:2:2 (i.e., 50/50/100/100/100/100KVAR.

c) The controller shall sense current from a single phase and voltage from two phases tocompute the average 3-phase power factor and accordingly compensate by switching in

necessary capacitor stages.

d) The controller shall be suitable for 1A or 5 A current input.

e) The voltage on the capacitor terminals may be particularly high at times of light loadconditions. In such cases, some or all of the capacitors shall be switched out of circuit inorder to prevent overstressing of the capacitors and undue voltage increase in thedistribution system.

f) The controller shall be easily programmable from front panel itself.

g) The controller shall be able to recognize the connection of CT and Voltage and be able toautomatically adjust itself to the phase angle difference.

h) The voltage input to the controller should be through a VT and protected by a fuse.




E - 24

i) There should be a time delay of 120 seconds for Switching on a capacitor bank intocircuit, from its last disconnection from the circuit.

j) The controller shall have LED / LCD Display. Parameter in display should be cyclic withsuitable time delay. The display unit shall be easily visible, without opening the APFC

Cabinet door/cover. The APF controller shall display the following parameters.

k) The Automatic Power Factor Controllers shall allow the following settings and readings.

i) Discharge time,ii) Disconnection pause of relay stages,iii) Power station service,iv) Choke degree,v) Voltage transformer ratio,vi) Harmonic table,vii) Switching frequency of transistor stages,viii) Averaging time for reactive power,ix) Averaging time of the mean value cos (phi),

x) Fan control,xi) Over temperature disconnection,xii) Indication in manual mode,xiii) Password,xiv) Contrast,xv) Reset of programming,xvi) Connection configuration,xvii) Software release,xviii) RS485 interface.

l) The Automatic Power Factor Controllers shall initiate alarms and warnings in the followingevents.

xix) Insufficient capacitor outputxx) Over currentxxi) Under voltagexxii) Over voltagexxiii) Over temperaturexxiv) Total voltage harmonic distortionxxv) Overcompensationxxvi) Low currentxxvii) No voltage release

m) The Automatic Power Factor Controllers shall instantaneously switch off the thyristor inthe following contingencies occurring in any of the Phases.

i) Voltage above 457V.ii) Voltage below 290V.

12. POWER QUALITY METERING:

The Power Quality (PQ) Meter shall be a Digital Signal Processor (DSP) based microcontroller operating as an intelligent unit to monitor and measure all the electricalparameters of the system as well as that of the capacitor control panel. The controller shallsense and monitor 3 Phase Currents, Neutral Current, 3 Phase Voltages, 3 Phase PowerFactors, 3 Phase KW, KVA, KVAR, KW-HR, KVA-HR, KVAR-HR, Capacitance of all 3phases, Capacitance of each capacitor and % THD, and shall switch in necessary rating ofcapacitors to maintain the minimum power factor specified.




E - 26

Current:Current Per-PhaseCurrent, Neutral (measured)Current 3-Phase AvgCurrent % Unbalanced

Power:Real Power (Per-Phase, 3-Phase Total)Reactive Power (Per-Phase, 3-Phase Total)

Apparent Power (Per-Phase, 3-Phase Total)Power Factor – True (Per-Phase, 3-Phase Total)Power Factor – Displacement (Per-Phase, 3-Phase Total)

Energy: Accumulated Energy (Real kWh, Reactive kVARh, Apparent kVAh) (Signed/Absolute)Incremental Energy (Real kWh, Reactive kVARh, Apparent kVAh) (Signed/Absolute)Conditional Energy (Real kWh, Reactive kVARh, Apparent kVAh) (Signed/Absolute)Reactive Energy by Quadrant

4) Accuracy:

The power quality meters shall meet the following accuracy classes.a) ANSI C12.20 accuracy class 0.2.b) IEC62053-22: Electricity metering equipment (AC) – particular requirements –part 22: staticmeters for active energy, accuracy class 0.2Sc) IEC62053-23: Electricity metering equipment (AC) – particular requirements –part 23:static meters for reactive energy, accuracy class 1.

5) Sampling:

a) The power quality meter shall sample at 256 samples / cycle.b) The meter shall be able to perform high speed sag/swell detection of voltage disturbanceson a cycle-by-cycle basis, providing the duration of the disturbance, the minimum, maximum,and average value of the voltage for each phase during the disturbance. Disturbances lessthan one cycle in duration can be detected.

6) Display:

a) The power quality meter shall have a LCD display of reasonably high level pixel value.b) It shall support direct display of all parameters on the front panel.c) It shall provide a trend display of any parameter internally recorded at regular intervals.d) It shall have a user programmable custom display that is capable of displaying up to 20quantities on a single screen.

e) It shall be able to display advanced graphical representations of metering informationincluding at minimum spectral components, phasor diagrams, and trending charts.f) It shall be able to display measurements in either IEC or IEEE formats.g) It shall be able to display the following front panel screens:i) Numeric: Display 2, 3, 3 with timestamp, 4, 8, 10 or 20 parameters at a time.k) Event Log: Display recent events written to the power quality meter’s event log, includingdiagnostic events.l) Nameplate: Display information in a tabular format (default nameplates show owner,meter and power system details).m) Trend Bar: Display up to 4 real time numeric parameters along with their upper and lowerextremes.n) Histogram: Display harmonics content in histogram format, including 2nd to 63rd harmonic,THD (total, even, odd); current harmonics histogram screens display K Factor and CrestFactor.0) Phasor: Display phase information in phasor diagram format, including phase, voltage andcurrent magnitudes; phasors that are too small in magnitude are shown as table entries only.




E - 27

7) Logging:

a) The power quality meter shall have at least 5MB of user programmable onboard datalogging. Field Expansion shall be possible.

b) The PMS will store all critical internal and revenue data upon sudden power loss.c) The meter shall have non-volatile memory.d) Provide pulse output for energy kwh to the BMS system.e) It shall have a time-stamped event log with the following features:i) Supports at least 500 events.ii) The number of records in the log is programmable.iii) Each event is recorded with the date and time of the event, the cause and effect of theevent, and the priority of the event.iv) All events relating to set-point activity, relay operation and self-diagnostics is recorded inthe event log.v) Time stamps have a resolution of 1 millisecond.vi) Time stamps can be synchronized to within 100 ms between devices on the same serialcommunications medium.

vii) Minimum event recording response time is ½ cycle (8.3ms 60Hz, 10ms 50Hz) for highspeed events and 1 second for other events.viii) The priority of set-point events is programmable.

8) Alarms:

a) The power quality meter shall have set-point driven alarming capabilityb) It shall be able to generate an email on an alarm condition.c) It shall have millisecond timestamp resolution on alarm entries.d) It shall be able to readjust alarm set-points based on the alarm quantity (Alarm Set-pointLearning)e) It shall support consecutive high-speed alarm conditions which trigger on a cycle-by-

cycle basis with no “dead” time between events (i.e. no need for a rearming delay time

between events).f) It shall be able to operate relays on alarm conditions.g) It shall be able to initiate data log captures on alarm conditions.h) It shall be able to control digital output relays in an AND or an OR configuration, usingpulse mode or latch mode operation, for control and alarm purposes.i) It shall be able to combine any logical combination of any number of available set-pointconditions to control any internal or external function or event.

Capacitor Bank Status

Capacitor bank main incomer breaker ON / OFFStage breaker ON / OFFOver Temperature Alarm / Trip

Event Information

Power interruption (System & phase wise)Voltage & current unbalanceCapacitor Bank fault

Critical / Fault Information Like

Overloading of transformerFailure of Capacitor BankFailure of PFC controller

Load profile, voltage profile, current profile reports shall be available as per requirement.Power supply availability, Interruption report shall be generated.




E - 28

List of overloaded transformers, list of transformers with unbalance load, list of transformerswith defective capacitor bank shall be generated on demand.

Time for collection of data through GSM modem should be every 5 minutes.

13. CAPACITOR BANK ENCLOSURE SYSTEM:

The capacitor bank comprising of capacitor units, power factor controller, series reactors,contactors, MCCB, MCB etc shall be housed in a suitable metallic enclosure having a frontdoor with a provision for locking arrangement.

The capacitor bank enclosure shall be fabricated from sheet steel of minimum thickness 2mm and having Aluzinc coated steel having a coating thickness of minimum 25 micronsshall be used for the enclosures.

The degree of protection of enclosures for indoor application shall not exceed IP31 in

accordance with IEC 60529. The compartment door(s) shall be fitted by long robust weather-proof stainless steel hinges and suitable locking devices.

Temperature rise calculations shall be submitted along with the offer to prove that thetemperature rise is within the temperature tolerance levels of the capacitor bank components.

14. RATING PLATE:

Substantial brass or stainless steel diagram and rating plates shall be provided on thecapacitor bank unit giving full detailed information as follows:

a) Manufacturer.

b) Serial number and manufacturing year.

c) Rated total output in kilovars (KVAR) / Number of switchable Capacitors with capacity

d) Rated voltage in volts (V).

e) Rated frequency in hertz (Hz).

f) Suitable for: Rating of Transformer in KVA

g) Maximum power consumption of APFC panel

h) Guarantee period

i) Date of dispatch

15. INTERNAL WIRING:

All small wiring shall have a cross sectional area of not less than 2.5 sq. mm. and shall be

600/1000 volts, insulated with type 5 PVC table I of BS. 6746, stranded copper conductors.

All small wiring shall be suitably terminated and fitted with identification ferrules and marked

with circuit numbers in accordance with “British Central Electricity Authority Engineering

Recommendations” S-12 standard numbers for small wiring or similar approved standard.

The trip circuits shall have an additional ferrule colored red and marked trip.

All terminal blocks shall be from an approved design and all exposed terminals shall be

enclosed by detachable covers. The trip circuit cables shall be colored black and the

instrument transformer cables (C.Ts) colored with their respective phase colors.

Alternatively, all small wiring can be uniform color (e.g. grey) but instrument transformer




E - 30

All samples used for testing shall be to the contractor’s expense and shall not affect thequantities to be supplied under this contract.

All instrument used for testing purposes, shall if required by the engineer be calibrated by anapproved authority.

The cost of all tests shall be included in the contract price and shall not be quoted forseparately.

The following test / inspections shall be carried out:

a) Routine Tests on Capacitor Units

All routine tests shall be carried out in accordance with the International Electro-technical Commission (IEC) Publication No. IEC 60831 as per the relevant clausesmentioned against each test. Routine tests shall be carried out by the manufacturer onevery capacitor before delivery.

1. Capacitance measurement and output calculation (Cl. 7).2. Measurement of the tangent of the loss angle (tan δ) of the capacitor (Cl. 8).3. Voltage test between terminals (Cl. 9.1).4. Voltage test between terminals and container (Cl.10.1).5. Test of the internal discharge device (Cl. 11).6. Sealing test (Cl. 12).

b) Routine Tests on Capacitor Bank

All routine tests shall be carried out in accordance with the International Electro-technical Commission (IEC) Publication No. IEC 60439 as per the relevant clauses

mentioned against each test. Routine tests shall be carried out by the manufacturer onevery APFC Cabinets before delivery.

1. Inspection, including checking of clearance, dimensions etc. (Cl. 8.3.1)2. Di-electric Test (Cl. 8.3.2)

TYPE TESTS:

a) Type Test on Capacitor Unit :

All type tests shall be carried out in accordance with the International Electro-technicalCommission (IEC) Publication No. IEC 60831 as per the relevant clauses mentioned

against each test. Every capacitor sample to which it is intended to apply the type testshall first have withstood satisfactorily the application of all the routine tests.

1. Thermal stability test (Cl.13).2. Measurement of the tangent of the loss angle (tan δ ) of the capacitor at elevated

temperature (Cl. 14).3. Voltage test between terminals (Cl. 9.2)4. Voltage test between terminals and container (Cl. 10.2).5. Lightning impulse voltage test between terminals and container (Cl. 15).6. Discharge test (Cl. 16).7. Ageing test (Cl. 17).8. Self-healing test (Cl. 18).9. Destruction test (Cl. 19).

b) Type Tests on Capacitor Bank




E - 31

All type tests shall be carried out in accordance with the International Electro-technicalCommission (IEC) Publication No. IEC 60439 as per the relevant clauses mentionedagainst each test.

1. Temperature Rise Test (Cl. 8.2.1)

2. Di-electric Test (Cl. 8.2.2)3. Short-circuit withstand strength ( Cl. 8.2.3)4. Effectiveness of the protective circuit ( Cl. 8.2.4.1 & 8.2.4.2)5. Clearances and creepage distances ( Cl. 8.2.5)6. Mechanical operation ( Cl. 8.2.6)7. Verification of Degree of Protection (Cl. 8.2.7)8. Wiring, electrical operation ( Cl. 8.3.1)9. Electromagnetic compatibility EMC ( Cl. 7.10)

c) MCCB’s, Reactors, Current Transformers :

Complete type test certificates for all major components, like MCCB’s, Reactors,

Current Transformers, etc. shall be submitted as per the relevant IEC/BS standardsalong with the tender.

d) Low Voltage Cables:

All routine and type tests shall be carried out in accordance with the latest I.E.C.recommendations No. 502 and supplements.

NB: If the successful tenderer produces evidence in the form of the testcertificates from an acknowledged International Testing authority for any of the typetests listed above on any of the equipment, he may be relieved from repeating that typetest.

However, if such evidence is not acceptable to the Purchaser for any reason, all thenecessary type tests shall be carried out without any extra cost whatsoever.

SITE TESTS:

The contractor is responsible for submitting all contract works to site inspection by theEngineer, before site tests are commenced. Before commissioning, the contractor shalldepute an experienced and qualified testing Engineer from the manufacturer’s works tocarry out the following tests on the equipment and such other tests that may be considered

necessary by the Purchaser.

The Site Acceptance Test (SAT) format for the capacitor bank shall be forwarded to thepurchaser prior to the SAT.

The contractor’s test engineer shall complete all pre-commissioning tests, commission allplant and equipment supplied by him and hand over the entire contract works to thePurchaser in good shape. All the charges connected with the pre-commissioning tests of theequipment shall be included in the tender price.

The contractor’s testing engineer shall carry out all commissioning tests in co-operation withand to the satisfaction of the Purchaser’s engineer who will take part in all these tests.

The Contractor shall provide all test equipment required for different test purposes at site.The following test / inspections at site shall be carried out:




E - 32

1. Mechanical Tests:

Visual inspection to verify degree of protection creepage and clearance distances.

All conductors and cables are checked for proper routing and all devices for propermounting.

Check effectiveness of all mechanical devices, e.g. handles, locks, interlocks,operating devices, etc.

Check panel conformity to drawing and Engineer’s requirements.

a) Checking of all mounting plates/fasteners.

b) Checking of dimensions and components as per drawings.

c) Electrical circuits fasteners tightness/ surface area contacts.

d) Crimping and ferrules as per drawing.

e) Labels / Identification/ Nameplate.

f) All doors checking, safety and accessibility.

g) APFC cabinet surface finish/smoothness.

2. Electrical Tests:

Megger test all main circuit through to final terminals. Insulation resistance shallexceed 10 meghoms. Record all measurements.Flash test all main circuit at 2.5 kV for one minute. Record leakage current.

Repeat megger test to verify insulation resistance has not been affected by thedielectric test.

Function test of all circuit breakers switches, contacts, etc. and every circuit to verifycorrect operation.

Primary and secondary injection tests of all relays, CT’s and indicating and meteringinstruments.

a) Insulations resistance tests between phases and earth and between neutral and earth.

b) Operational test on components.

c) Switching ON/Off of capacitor bank on various KVAR requirement.

d) Checking of Display parameters.

e) Switching On/Off logic verification.

f) Data communication through Serial/optical port between AFC &

g) HHU(MRI) & dumping of data in computer.




E - 33

h) Verification of data/reports/functions in base computer software.

Prior to energizing the capacitor bank the following checks shall be carried out at site:

Operate the equipment through all design functions, including remote operation,

actuation of alarm and indicating devices, mechanical and electrical tripping andclosing and operation of the protective devices.

Insulation resistance measurements on the buses, phase to phase and phase toground, with all breakers in the fully connected position and contacts open.

Control circuit insulation resistance to ground.

Inspect all relays and protective devices, and verify settings in accordance with themanufacturer’s instructions.

Inspect current transformers and relays for correct polarity of connections and theinstallation of jumpers on unused current transformer circuits.

Simulate the operations and check the logic of interlocks.

Manually close and trip each breaker checking and adjusting the main contactalignment and wiring action in accordance with the manufacturer’s instructions.

Check the phasing on each side tie breaker, before closing.

Test protective relay operation for incomer air circuit breakers.

Measurement of the power factor and system harmonics before and after commissioning ofthe capacitor bank.

B.3 SUBMAIN BOARD

The sub-main board shall be suitable for operation on 3 phase, 4 wire, 50 Hz, 415volts, A.C. supply. The panel shall be cubicle type suitable for wall mounting orfree standing, comprising of isolator, contactor, MCCB or switch fuse units asshown on the electrical schematic drawing. The construction shall be of Form 2type as explained earlier.

The bus bars shall be electrolytic copper, PVC sleeved, supported on non-hygroscopic insulating supports conforming to B.S. 159 and suitably derated forproviding sleeves.

The board shall be equipped with name plates to identify the feeders and alsodanger boards as specified earlier. The minimum fault level of this panel shall be25 KA as per Kahra-maa regulations. In case the fault level does not match thespecified 25 KA, the current limiting devices shall be provided in accordance withTable no. 1 of Kahra-maa regulations, latest edition.

The MCCBs shall be triple pole, moulded case type complete with magnetic shortcircuit and thermal overload protection, derated for the ambient temperature of

50°C.

The sub-main board shall be complete with ammeters, current transformers andmaximum demand indicator.




E - 34

The detailed specifications for MCCBs shall be the same as indicated in the M.V.panel specifications.

POWER METERS (PM) :

A. General Provisions1. All setup parameters required by the PM shall be stores in non-volatile memory.2. The PM shall support single phase and three-phase, three – or four- wiresystems with nominal frequencies of 45 to 65 Hz without modification.3. The PM shall comply with installation category III pollution degree 2 fordistribution systems up to 277 V L-N/480 VAC L-L.

B. Measured valuesThe PM shall provide the following, true RMS metered quantities:1. Real-time readings: Current, Voltage, Real Power, Reactive Power, ApparentPower, THD (V and I).2. Energy Readings: Accumulated Energy (Real KWH, Reactive KVARh, ApparentKVAh).3. Demand and peak Readings: Current, Real Power, Reactive Power, ApparentPower.4. Other: Power Factor, Load Operating Time.5. Provide pulse output for energy kwh to the BMS system.

C. Sampling

The Current and Voltage Signals Shall be digitally sampled at a rate high enoughto provide true rms accuracy to the 15th harmonic.

D. Minimum and Maximum ValuesThe PM shall provide minimum and maximum values with phase indication viacommunications and display for the following parameters:Voltage, Current, Power Factor, Real Power Total, Reactive Power Total, ApparentPower Total, THD (Voltage and Current) and Frequency

E. Voltage and Current Inputs1. The Circuit monitor shall allow direct connection to circuits up to 480 volts AC L-L with a 20% over range capacity and 2 Mohm (L-L) or 1Mohm (L-N) of voltageinput impedance. The PM shall also accept voltage inputs from standardinstrument potential transformers with primaries up 1.6MV.2. The PM shall accept current inputs from standard instrument currenttransformers with 5 amp secondary output and shall have a metering range of 0-6amps with the following withstand currents: 15 amp continuous, 50 amp 10 sec perhour, 120 amp 1 sec per hour.

F. Accuracy1. Frequency accuracy shall be ± .01 Hz from 45 to 65 Hz.

2. No annual calibration shall be required to maintain this accuracy.

G. Control Power




E - 35

1. The PM shall operate with the following auxiliary power 110-415 VAC, +/- 10%or 125-250 VDC, +/- 20%.

H. Display

1. The PM display shall be a back lit LCD, anti-glare and scratch resistant.2. The PM display shall be capable of providing four values on one screen at thesame time. A summary screen shall provide average current, average voltage,power and energy values in a single view.3. The PM shall provide an intuitive navigation with context-sensitive menus foreasy to use.

B.4 DISTRIBUTION BOARDS

General

Distribution boards shall be totally rust proof and conform to BS EN 60439-1 Part12 and be suitable for operation on 240/415 volts, 1 phase/3 phase, 50 Hz, 4 wire A.C. system. These boards shall be factory assembled, either flush or surfacemounted as indicated on the tender drawings.

The boards generally shall have mixed capacity for lighting and general power sub-circuits for items as shown and indicated on the drawings or in these electricalspecifications. All boards shall be complete with MCBs, RCCBs, main incomingisolator and digital meter ( as required, similar to submain board power meterabove ) which shall be connected directly to the D.B bus bars and other

accessories as required and indicated in the D.B. schedules.

The enclosure shall be fabricated from zinc coated steel sheet having adequategauge to ensure a rigid robust construction free from distortion. Each enclosureshall be of adequate size to accommodate all the components specified, stoveenamelled. The enclosure shall be fitted with a sheet steel front panel which shallbe firmly fixed by cheese-head screws. Screw holes shall have a minimum depth of6 mm. The front panel shall be cut neatly to allow the MCBs/RCCBs levers toprotrude through. The front panel shall however effectively conceal all conductors,contactors, bus bars and any other live parts installed within the enclosures.

Each enclosure shall be fitted with a rigidly constructed double hinged steel sheet

door. All doors shall be provided with gaskets and fitted with at least two robusthinges. Each enclosure shall be fully equipped to accommodate the number ofMCBs/RCCBs of ratings as indicated on the drawings. Where the Contractor offersenclosures designed to accommodate a greater number of breakers than indicatedon the drawings, the Contractor shall supply the additional breakers of rating to beagreed with the Engineer. Blank shields shall be provided for the rest of the space.

Distribution boards located remote from the main switch boards shall be mountedat a height of not less than 1200 mm from finished floor level to bottom of the D.B.and maximum height of this D.B. shall be 2200 mm.

Where single phase distribution boards are specified they shall be complete withdouble pole isolator and where three phase distribution boards are specified theyshall be complete with triple pole isolator and a demountable/removable neutral




E - 36

link. These isolators shall be integral and connected directly to bus bars. Thesebus bars shall be shrouded.

Each distribution board shall have separate earth and neutral bars having the

same number of connections as there are phase connections. A cable connectionshall be made from earth bar to the incoming cable gland earth tag. All phase andneutral bars shall be sized to carry the full load current of the controlling breakerwhich shall be of flat tinned copper rigidly mounted, supported on shock-resisting,non-hygroscopic, high grade insulators with high resistance to tracking, not subjectto mould growth or termite attack with adequate spacing and clearance.

Connection from the bus bars to the breakers shall be made by using solid circularinsulated conductors or insulated and tinned copper strip neatly set and formed.Each connection to or from a phase or neutral bar shall have its own brass fixingscrews, washers, butts and locknuts.

Each distribution board shall be fitted with an identification label on its front cover.The label shall be suitably inscribed stating the distribution boards referencenumber/letter, rating in volts & amperes and the number of ways in English and Arabic. In addition to the above a reference card shall be fitted inside thedistribution board giving details of each circuit, MCB size, cable size and location.The reference card shall be affixed to the inside of the distribution boards door viaa transparent envelope.

All live terminals of parts and bus bars shall be shrouded with insulating materialsto ensure that it is impossible for any live metal to be touched while withdrawing orreplacing MCBs.

The correct rating of breakers shall be fitted in each way to conform to the size ofthe final circuit conductor and its connected load in conformity with Kahra-maa.

All breakers and DBs shall be of one make throughout the whole of the works.

Miniature Circuit Breakers (MCB)

Miniature circuit breakers shall be of an approved make and comply with IEC-898with magnetic or temperature compensated thermal overload trips with magneticshort circuit trips. They shall be single pole rated for an ambient temperature of50°C. on the outside of the enclosure in which the breaker is mounted. They shallbe of hermetically sealed type with minimum breaking capacity of 9 KA at 415V orotherwise indicated on the tender drawings. The frame size of all MCBs shall beidentical so that they can be easily interchanged. Circuit breaker dollies shall be ofthe trip free pattern to prevent closing the breaker on a faulty circuit withoutresetting and shall also indicate the ON/OFF positions. Standard rating of MCBsshall be used for ease of availability.

The MCB selection shall be carried out on the basis of its application. Differenttypes shall be used for this purpose with the following time / current characteristics:

* Type B - 3 to 5 In

* Type C - 5 to 10 In* Type D - 10 to 20 In




E - 37

Type B would be used for circuits with no switching surges.

Type C for f luorescent lighting, small motors which can produce switching surges.

Type D for X-ray machines, industrial equipment and similar application where

abnormally high in-rush currents are experienced.

The Contractor shall select the type of MCB to be used against each circuit in thesubmittal and obtain Consultant’s approval before ordering the material.

The most important technical factor upon which the correct selection of circuitbreaker for any installation depends is the type of load to be protected by MCB.

1. Load which does not vary much above its rated value, e.g. heating loads - thecircuits feeding such apparatus are called steady load circuits and suchcircuits shall be protected by miniature circuit breakers for steady loadcircuits. Their current ratings shall be at least equal to that of the load.

2. Loads which may have peaks of comparatively short duration above its ratedvalue, e.g. motors, capacitors etc. Circuits feeding such apparatus are calledfluctuating load circuits and such circuits shall be protected by miniaturecircuit breakers for fluctuating load circuits. For these loads, the circuitbreakers shall have time/current characteristics that will allow the transientovercurrent to be carried without tripping or derate the size of MCB to takecare of this transient current as recommended by the manufacturer.

Residual Current Circuit Breaker (RCCB)

Current operated residual current circuit breakers (RCCB) shall comply with BS EN61008. They shall consist of a current transformer, tripping coil with contactorassembly, main supply contacts, ON/OFF switch, test button and trip freemechanism all mounted on a robust body of insulated material. The number ofpoles and the rated current shall be as detailed on the drawings and the terminalsizes shall be suitable for the cables to be connected.

The sensitivity of the breakers shall be such that they are capable of detectingearth leakages of 30 milli amps and the operating time shall not exceed 20 milliseconds under earth fault conditions. The breaking capacity shall not be less than9 KA; tripping time shall be unaffected by temperature changes and shall not bepossible to hold the trip mechanism closed under fault conditions.

The windings and coils shall be suitably tropicalised for operating in a relativehumidity of 98%. All contacts shall be of robust construction and be of non-welding, self-wiping and self-aligning type designed for a minimum of 10,000switching operations.

The residual current circuit breakers shall be used to protect the ring main, waterpumps, water heaters circuits, lighting circuits in bathroom and any otherequipment as required by Kahra-maa.

Residual Current Circuit Breaker with MCB (RCCB/MCB)

Where combined RCCB/MCB devices are specified, the Contractor shall provideearth leakage, overload and short circuit protection within the same unit, and shall




E - 38

comply with IEC 1009-2-2. The sensitivity and tripping time shall be 30 mA and 20ms respectively. The unit shall be compatible to other breakers installed within theboard and shall have a test circuit with a test button.




E - 39

B.5 FUSE SWITCH AND ISOLATOR UNITS

Fuse switches shall be of robust construction and rated for 660 volts. Themechanism shall be easily operated and of sound mechanical design. The actionshall be of the "quick-make and quick-break" type and the fixed and movingcontacts shall be solid copper and of adequate size for the current rating of theswitch. Switch contacts shall be shrouded to avoid any accidental contact with livemetal. These switches and fuse switches shall be certified for 500 volts duty to therequirement of BS EN 60947-3 : 1992 and shall be metal clad unless otherwisespecified and totally dust proof.

Each switch shall, unless otherwise specified, be designed to be fitted with highrupturing capacity cartridge fuse links of E.E. or equal make and the Contractorshall provide such fuse links, suitably rated, for the load conditions in the circuits to

be protected. Rewirable fuses shall not be acceptable under any circumstances.

All fuses shall be HRC cartridge type in compliance with B.S. 88 and shallincorporate a fusible element of appropriate current rating and fusing factor for thepurpose of circuit protection and discrimination. All fuses shall be of onemanufacture throughout the whole of the works.

The operating handle shall be fitted to the front of the unit and shall have positivemeans of indicating the "ON and OFF" positions.

An interlock shall be provided on each switch so that the door cannot be opened orthe switch withdrawn when the switch is in "ON" position, nor the switch be closed

when the door is open or the switch withdrawn. The door of the switch enclosureshall be hinged at the side or bottom and adequate fastenings provided on the sideopposite the hinge. Locks and padlocks shall be provided for each switch to lockthe switch into any one service.

The fuse switches shall comprise of a triple pole or double pole unit on the phaseconnection only. A solid copper removable link of the same current rating as theswitch shall be provided within the switch enclosure for the neutral connection.

Isolating switches without fuses shall be of a similar construction and appearanceto that of fuse switches already described above and shall be capable of makingand breaking a load equal to their full rated capacity. All isolators shall be ‘On

Load’ type (AC-23) category. "OFF" load isolators will not be accepted in any partof the installation.

All external isolators shall be metallic type to IP 65 and covered with sun shade.




E - 40

The utilisation categories for switch fuses/fuse switches according to IEC 408 :1972 standards are given below :

Table I

Nature of Category Typical applicationscurrent

AC AC-20 Connecting and disconnecting under noload conditions

AC-21 Switching of resistive loads, includingmoderate overloads

AC-22 Switching of mixed resistive and inductiveloads, including moderate overloads

AC-23 Switching of motor loads or other highlyinductive loads

Steel sheet enclosures shall be used for surface mounted isolators with thefollowing degree of protection according to BS 5420, IEC 144 - IP 40, IP 54 and IP65.

All electrical equipment such as air conditioning units and pumps shall be providedwith suitably rated isolator near its location as shown on the relevant drawings.

The supply and installation of the above equipment and all interconnecting

associated wiring shall be carried out to the satisfaction of the Engineer. Switchcases shall be interlocked with the switch action. In areas subject to damp ormoisture laden atmosphere, the cases shall be suitably protected.

All unit type switch gear shall have detachable end plates either plain, undrilled orwith 'knock-out' entries. Combined isolator/starter units may be used whereversuitable in preference to individual isolators and individual starters. The Contractorshall allow in his tender for the final cleaning down and painting of all electricalapparatus and sub-distribution boards.

Where PVC/SWA/PVC or XLPE/SWA/PVC cables are used, the correct type ofglands shall be fitted to the equipment.

B.6 WIRES & CABLES

PVC Insulated Wires - Single Core

The PVC insulated non-sheathed wires to be used for lighting and power wiringshall be of 450/750 volts grade conforming to BS 6004-1975 and laid in PVC orgalvanised conduit/trunking as specified. The wires used at this project shall havestranded copper conductor and sized as indicated on drawings and in accordancewith Kahra-maa regulations.

The number and sizes of cables drawn into the conduit/trunking shall not exceedthan that given in the appropriate tables of Kahra-maa regulations. In all cases, it




E - 41

must be possible to withdraw any wire without damage to the remaining cables.The wires to be used shall be colour coded - Red, Yellow and Blue for therespective phase wiring, Black for the neutral wiring and Green/Yellow for the earthconductor. The cables shall be installed on the 'loop-in' system, no joints being

made anywhere in the installation.

Wires ends shall be stripped with purpose made stripping tools correctly adjustedto suit the conductor size. All terminations to fittings and accessories subject to atemperature rise shall be carried out with conductors insulated with heat resistingmaterial such as Butyl Hypalon or equal that can stands 85°C minimum.

In distribution boards the wires comprising each circuit, sub-circuit or final sub-circuit shall be bound together and neatly wired into position in an approvedmanner.

When wires are installed in trunking the wires of each circuit, sub-circuit or final

sub-circuit shall be bound together in an approved manner at 600 mm intervals. Invertical trunking, wires shall be fixed to prevent stress by weight. Where wires areinstalled in trunking, the trunking shall be of sufficient cross sectional area, havingregard to the number of wires installed so that a space factor of 45% is notexceeded in accordance with Kahra-maa regulations. The wires shall be ofstranded core.

Compression type lugs and ferrules are preferred and should be included. Thetools for making compression joints must be those recommended by themanufacturer of the lugs and ferrules and also approved by the Engineer.

For stud type terminals, approved crimping lugs or claw type washers shall be

used. All conductors, excluding those terminated into clamp type terminals shallbe connected in the foregoing manner. Where clamp type terminals are used, theconductor shall be terminated without lugs with the exception of flexible conductorshaving wires 0.3 mm or smaller which shall be fitted with crimps. Not more thanone conductor shall be terminated in each clamp.

To identify the wires, each phase wiring shall be of its own colour at both ends andprovided with ferrules to identify the circuit number. The wiring for the entireinstallation shall be carried out using loop system from point to point with no jointsmade anywhere on the installation. Not more than two ends of wires shall be joined in each terminal of switch/socket or light fitting. The minimum size of wire tobe used for lighting circuits shall be 2.5 mm² size and for ring circuits, it shall be 4mm², unless otherwise specified.

The core identification ferrules or sleeves shall be of insulating material which shallbe white and shall have a glossy finish. The ferrules or sleeves shall be unaffectedby oil or damp. Characters shall be suitably marked in black.

Armoured Cables

The armoured cables shall be sized to comply with the following:

i. Derating regulations of Kahra-maaii. Switch rating of the load

iii. Allowance for 2.5% voltage drop.




E - 44

connection shall be as short and straight as practicable. All terminations are to befitted with PVC shrouds.

All cables shall be scheduled and installed with a unique number. The Contractor

shall prepare cable schedules in accordance with the typical blank specificationschedule. All information required to be completed on the schedules shall beprepared and recorded by the Contractor. All cables shall be numbered inaccordance with the cable numbering system already employed at the site. TheEngineer will advise the Contractor during the contract of the details of the systemand cable numbers allocated for the contract works. All cable schedules shall beto the Engineer's approval.

Each end of every cable shall be provided with markers for identification. Themarkers are to be fitted in a suitable position under cable termination. Wherecables enter and leave ducts or pipes, suitable identification markers shall be fitted.The materials of the markers and of the labels and fastenings shall be such as to

avoid corrosion due to incompatibility of materials and to ensure permanentlegibility.

Each cable is to run in one continuous length except where the run of cableexceeds normal manufacturing lengths. Other straight-through joints will not bepermitted unless specifically authorised by the Engineer. Where joints cannot beavoided, the estimated weight of joints and supporting steel work together with anyadditional civil requirements shall be taken into consideration. Joints shall beadequately supported and the provision for such shall be included in the scheduleof rates. Each joint shall be clearly labelled in an approved manner to indicate thecable number and the joint number and single core joints shall be so marked thatthe phase identity of each joint may be subsequently ascertained.

Where the armour wires of plastic insulated cables constitute the earthed metallicshield, such wires shall be efficiently bonded across the joint in an approvedmanner. The electrical resistance of such bonds shall not exceed that of an equallength of the cable armour wires. Suitable care shall be taken to ensure that thebond contacts do not deteriorate in service.

The exact location of each trench shall be approved by the Engineer. Trenchesshall be kept as straight as possible and each trench shall be excavated to anapproved formation and dimensions and shall have vertical sides which shall betimbered where necessary so as to avoid subsidence and damage. The bottom ofeach trench shall be firm and of smooth contour. Where trenches pass from afootway to a roadway or at other positions where a change of level is necessary,the bottom of the trench shall rise or fall gradually.

The Contractor shall take reasonable precaution to prevent damage to the highwayor ground surface from a slip or breaking away of sides of trench. Rate of rise orfall shall be approved before-hand. The Contractor shall deal with and dispose ofwater so as to prevent any risk of the cables and other materials to be laid in thetrenches being affected detrimentally. The Contractor shall provide all pumps andappliances required and shall carry out the necessary pumping and bailing.

Unless otherwise agreed, provision shall be made during excavation for

reasonable access of persons and vehicles to property or places adjacent to theroute. This provision shall be maintained until restoration has been completed.When the excavation for trenches have been accurately executed, notice shall begiven by the Contractor to the Engineer. Laying of cables or building of the




E - 45

structures shall not be started until the Contractor has obtained the Engineer'spermission to proceed with the work.

The unit price quoted in the schedules shall include the provision of such quantities

of skeleton timbering consisting of pairs of boards and struts at intervals of not lessthan 3 m as may be required by the Engineer.

When in the course of the contract works, obstructions are encountered whichnecessitate diversions or alterations to other underground works, or alterations tobuildings or foundation, or when conditions necessitate the adoption of a specialform of trench, the Contractor shall immediately notify the Engineer; further workshall not proceed until written instructions have been obtained from the Engineer.

The material excavated from each trench shall be placed so as to prevent nuisanceor damage. Where this is not possible, the excavated material shall be removedfrom the site and returned for refilling the trench on completion of laying, without

cost to the Client. Surplus material shall be disposed of by and at the cost of theContractor.

Single line cable routing drawings showing main cable routes only will be providedby the Engineer, but not detailed routing or cable supporting steelworks drawings.The Contractor is to include in the rate in the schedules for the preparation of alldetailed routing and steelworks drawings necessary to enable the Engineer to givehis approval of all main and subsidiary routes before installation commences. Adequate allowance is to be made in the designs for additional cabling required forfuture extensions plus 20%.

The whole of the cable supporting steel work including all racks, trays, cleats,

clamps, nuts, bolts, washers, fixings and other items required to complete theinstallation of cables shall be included in the contract.

Concrete inserts shall be provided in the vertical walls of all underground cabletunnels and trenches. These inserts will be spaced at 1m centres approximately.

All cables are to be run with a particular regard to neatness of appearance.Multiple runs are to be arranged so that cables entering or leaving the run do so ina logical manner.

All supporting steel work shall be hot galvanised in accordance with B.S. 729. Ifnot, all the supports shall be painted with two coats of red oxide paint and one coatof approved synthetic paint. All supporting arrangements shall be approved by theEngineer.

Included in the contract are the excavation of trenches for laying and installation ofthe above cables and equipment including all guarding, watching and lighting; theremoval of accumulated water, the removal and disposal of all surplus excavatedmaterials, the provision and removal of skeleton timbering and the slinging,strutting and shoring of other works within the trench; the filling of all trenches andinterim restoration.




E - 46

M.I.C.C. Cables and Fire Resistance Cables

All mineral insulated cables having copper conductors and copper sheath shall bePVC covered and be of 500 volt class, conforming to B.S. 6207 Part 1. Only one

manufacturer of both cables and accessories shall be used.

The whole of the installation shall be carried out with the tools recommended byand in accordance with the instructions and recommendations of the manufacturer.Only tradesmen skilled in the use of MICC cables shall be used on the installation.Unless otherwise specified, all cables shall be supplied and installed complete witha purpose made polyvinyl chloride (PVC) sheath.

The fire alarm wiring from panels to various devices shall be carried out by usingfire resistance cables. These cables are also to be used for fire alarm systemincluding its link-up with the A.C. system. The minimum size of cable on sub-circuits shall be 2.5 mm sq. unless otherwise noted, and the size of the sub-main

cables shall be as shown on the relevant drawings and schedules.

Terminations

Where cables enter boxes and equipment, the following methods of terminationshall be adopted.

a. A universal ring type compression gland shall be used as standard in allsituations other than those specified below and on no occasion shall anyother glands be used for main and sub-main cables.

b. Where entry to the equipment or box is already tapped, the gland shall bescrewed direct into the equipment utilising, where necessary with reducingsockets. The min. size of entry permitted shall be 20 mm external thread.

c. Where the entry to the equipment or box is a clearance hole, the gland shallbe fixed with a solid locknut.

Terminations shall comply with B.S. 6081 Part 1. The temperature classification ofthe seal shall be Class 105 unless otherwise indicated or directed by the Engineer.PVC shroud over glands shall be provided when PVC covered cables are used.Before applying a shroud, all bare metal shall be wrapped with pressure-sensitiveadhesive PVC tape.

Unless otherwise detailed elsewhere in this specification, all cable ends shall besealed with cold, screw-on pot type seals of the appropriate size and utilising coldplastic compound. Where seals are used without a gland, the seal shall be fittedwith a permanently fixed flexible earth 'tail' by the manufacturer.

The seals shall be drilled between the cable entry and knurling to accept the tailand then 'spot crimped' to ensure electrical connection. The earth 'tail' shall beconnected to an earth terminal inside the accessory or apparatus. It should benoted that for certain sizes of cable, a larger size seal is required when an earth'tail' is added.




E - 47

On flush lighting installations only, where special MICC clamp boxes are specified,it is not permissible to omit the flexible copper earth tail. The cable tails shallnormally be of neoprene or high temperature insulation with red PTFE or similarmaterial; silicone rubber shall not be used without the approval of the Engineer.

Where the Contractor considers it impracticable to utilise the solid conductor formaking off his final connections, he may, with the permission of the Engineer andusing an equivalent cross-sectional area flexible conductor, make an extended tailutilising the self-screw sleeve connector. This extension shall be carried out withinthe apparatus concerned.

Saddles and Clips

Saddles and clips shall be PVC covered when used with PVC covered cables;otherwise they shall be of plain copper.

Fixing screws shall be brass wood screws countersunk for one hold fixing saddlesand for other situations, round head brass complying with B.S. 1210 or B.S. 450shall be used. Where machine screws are used, nuts shall be of brass, squarepressed type complying with B.S. 2827.

Joining Sleeves

Joining sleeves shall be of brass with standard terminations. Solder ferrules shallbe used to join the conductors; the solder used shall comply with B.S. 219, TypeM. Non-corrosive flux only shall be used.

Installation

All joints shall be made at main switches, distribution boards, switches, ceiling roseboxes, socket outlet boxes and fixed apparatus only. No joints shall be made in joint boxes or through joints made, unless the special permission of the Engineer isobtained and his approval given to the method of joint proposed.

As indicated or as directed by the Engineer, cables shall be run neatly on thesurface of the building or in roof, ceiling or floor voids, sleeved in galvanisedconduits in wall cavities, run neatly or laid in floor trenches or drawn into ducts andburied in the ground through ducts. No bend in cable shall have an inside radius of

less than six times the outside diameter of the cable.

All cable routes shall be determined by the Contractor and agreed by the Engineerbefore work is started. Cables shall be run at least 150 mm clear of all plumbingand mechanical services. The use of conduit and/or cable trunking to encloseconductors shall be kept to a minimum.

A loop shall be introduced in a cable either in the false ceiling area or immediatelybefore its entry into equipment subject to vibration or occasional movement. Aclear space of at least 200 mm shall be maintained at the point in the loop wherethe cable passes over itself.




E - 49

B.7 CONDUIT AND CONDUIT FITTINGS

General

PVC conduits and accessories to be certified to BS EN 61386-21.Generally PVC conduit shall be used for lighting and power circuits, unlessotherwise specified. These shall be concealed in slab, walls or floor screed. Whereinstalled above false ceiling and in void: galvanised steel throughout the circuit. Inareas where the conduit is exposed to external weather or susceptible tomechanical damage, only, galvanised conduits shall be used as per thespecifications laid here under.

Polyvinyl Chloride Conduit & Accessories

The plastic conduits shall be of heavy gauge, rigid un-plasticised PVC, of the highimpact grade. The impact strength shall be tested in accordance with B.S. 4607.No conduit smaller than 20 mm in diameter shall be used. The minimum wallthickness for the conduit shall be as follows :

* 20 mm dia : 1.8 mm

* 25 mm dia : 1.9 mm

* 32 mm dia : 2.5 mm

* 38 mm dia : 2.5 mm

* 50 mm dia : 3.1 mm

All plastic conduit accessories shall be made from rigid un-plasticised PVC of thesame manufacturer as that selected for the conduit. The conduits shall be ofsufficiently large sections and so arranged with draw-in boxes to allow easy draw inand out of cables.

Where a solid fixed joint between conduit and accessory is required, use shall bemade of an adhesive recommended by the manufacturer of the plastic conduitselected. When making a joint, care must be taken to ensure that the plasticconduit is thoroughly cleaned at the ends to ensure good adhesion. Flexible jointsshall be made using a non-hardening adhesive and shall be used in conjunction

with expansion couplers.

Where bends or off-sets are required, these shall be made in accordance with themanufacturer's instruction without altering the section of plastic conduit. For plasticconduit up to 25 mm diameter, cold bends shall be acceptable. The bends shall beformed with the use of a bending spring obtained from the plastic conduitmanufacturer.

For larger sizes of conduit, bends shall be formed by pre-heating the tube afterinserting spring to prevent kinking. Pre-heating shall be done with a blow lamp ora blow flame, care being taken to avoid over-heating the surface or with theapplication of hot water by immersion, or wrapping hot clothes around the section

to be set. Any other method of bending can also be considered but subject toEngineer's approval.




E - 51

General Method of Installation

Generally the conduit installation shall comply with Kahra-maa regulations and IEEregulations. All joints shall be weather proofed using adhesive recommended by

the manufacturer. Fittings and draw-in boxes shall be provided with earthterminals where applicable.

Termination in metal equipment or accessories shall be with a tapped entry andemploy flanged couplings locked to the metal case using smooth brass bushes.

Conduits and fittings which are found to be below the standard specified herein,whether due to poor manufacture, rough handling, bad storage on site or poorworkmanship, shall be removed from site. Galvanised conduits and fittings may, atthe Engineer's discretion and approval be wire brushed and painted to anacceptable standard at no additional cost to the Employer.

Conductors for lighting and socket outlets may be run in the same section ofconduit if they are in the same phase, but low voltage socket outlets and otherauxiliary services shall be run in separate conduits.

No wiring associated with one service shall be installed in any conduit, box ortrunking containing wires associated with a different service. However, wherelighting or socket outlet wiring are served from the same distribution board, thecables may be run in the same trunking, provided they are in the same phase.

Conduits shall not be laid to falls, but care shall be taken to ensure that no pocketsare formed within the conduit system in which water can collect. Drainage holes, ifnecessary, shall be provided at suitable points as agreed and approved by the

Engineer.

The wiring shall be run in the conduits so as not to exceed the capacities set out inthe appropriate tables of Kahra-maa and IEE regulations. A separate PVCinsulated earth wire minimum size 1.5 mm² shall be included within each conduitand shall be connected to an earth terminal at each end. On no account shallgalvanised conduit be permitted to be used as an earthing route.

Conduits installed on the surface of walls or ceilings shall be fixed by spacer barsaddles fixed at no more than 1250 mm apart and secured by means of 1 no. 30mm countersunk screw in a fibre white metal or similar plug of the correct size.

All conduits shall be installed vertically. Horizontal and diagonal runs will not bepermitted on walls except where it is absolutely necessary, subject to the approvalof the Engineer.

Conduits shall be fixed to adaptable boxes, fuse boards, switches etc., by meansof smooth bore male brass bushes and couplers. The conduit system shall becompleted and continuous throughout and shall not rely on light fittings orequipment bodies or casings to provide earth continuity of ‘through capacity’ forwiring.




E - 52

Where conduits cross expansion joints, a slip joint shall be installed and earthcontinuity shall be maintained by using stranded bare earth copper 4 mm 2 wiringconnected by clips to each side of the slip joint. Where conduits cross expansion joints in the building structure, special expansion couplings shall be employed or

other approved methods adopted. Continuity through all such joints shall bemaintained.

Conduits buried on concrete shall have 37 mm depth of concrete cover over itsentire length. Conduit buried in plaster shall have 6 mm depth of cover over itsentire length and shall be fixed by means of zinc coated screws in hard woodplugs, not more than one metre apart. Conduits penetrating through roof slabsshall be complete with goose neck and sealed. Conduits laid on concrete floorslabs shall be fixed by means of corrugated steel saddles secured by hardenedsteel pins driven by percussion tool (Hilti or similar) at 1200 mm centres. On pre-stressed floor slabs and beams, fixings must be into the joints between the beamsor planks unless instructed otherwise by the Engineer.

In cast 'in-situ' applications, the Contractor shall ensure that adequate precautionsare taken for the secure fixing, positioning, alignment and protection of all conduitsand boxes during the building operations. All conduit outlets or other 'in-situ'construction must be plugged with extreme care to prevent the ingress of foreignmatter and the conduit system from becoming blocked during building construction.The Contractor will be held entirely responsible for any additional costs resultingfrom blockage or damage to conduits due to neglect or lack of attendance.

All spare ways in junction boxes etc., left for possible future extensions shall befitted with brass stopping plugs. For wiring purposes, all draw-in and inspectionboxes must be installed in readily accessible positions, which have been agreed by

the Engineer.

No more than two right angle bends or equivalent sets must be made in conduitruns between inspection boxes. On straight runs, inspection boxes must beinserted after each second conduit length. Corners shall be turned by easy bendsor sets made cold without altering the section or opening the seams of the conduit.No bend shall have an inside seam radius of less than three times the externaldiameter of the conduit. All bends must be machine-made.

Where cables of 2.5 mm2 or over are being drawn, draw through boxes may beused to minimise the bending of cables. Where conduits are installed in straightruns, draw boxes shall be provided at centres not greater than 8 m and on runswith not more than two right angle bends, boxes shall be provided at centres notgreater than 8 m. No boxes shall be provided in voids where access cannot bereadily obtained. No draw-in boxes, other than point boxes shall be installed inplastered walls or ceilings where the conduit work is concealed within the buildingfabric, excepting within cupboards or switch rooms or where permission has beengiven by the Engineer.

All exposed threads and parts of conduit where the enamel or galvanised finish hasbeen damaged during erection shall be thoroughly cleaned and adequately paintedimmediately after erection. The inside surfaces of erected conduit and conduitfittings shall be smooth and free from burrs and other defects.




E - 53

Running joints shall only be used where absolutely necessary and shall be paintedwith two coats of aluminium paint as soon as they have been tightened.

Female brass bushes shall be greased on to all free ends of conduit.

Conduit systems shall be electrically and mechanically continuous and water tightafter installation. All conduit systems shall be arranged, wherever possible to beself-draining to conduit boxes and outlet points. Where necessary, provision shallbe made to counteract condensation as directed by the Engineer.

Immediately before wiring, all conduit systems shall be thoroughly swabbed outuntil dry and clean.

Malleable cast iron adaptable inspection boxes shall be provided and fixed atinspection positions where more than two conduits cross. These boxes shall be150 x 150 x 50 mm deep inside measurements, except in cases where they occur

on stanchions where boxes of 100 x 100 x 40 mm deep inside measurement willbe permitted. The boxes shall be provided with malleable cast iron sunk lidssecured by four 2BA brass cheese head screws. Where the boxes are fullyrecessed, they shall be provided with 1.5 mm mild steel lids overlapping the boxes6 mm all round. Boxes shall be fixed by means of two nos. 10 countersunk headscrews and the holes in the back of the box must be countersunk to receive thescrews.

No more than three conduits upto 25 mm will be allowed per side on the aboveadaptable boxes. Where more than three conduits per side occur larger boxesshall be used. Deeper boxes shall be provided for conduits larger than 25 mmdiameter. All boxes must be positioned to the approval of the Engineer in readily

accessible positions. Galvanised ceiling boxes or equivalent BS looping-in boxesshall be provided and securely fixed for all ceiling points. Where overlapping lidsare required, they are to be as specified.

Small standard circular malleable iron conduit boxes conforming to BS 31 - 1940and BS 4568 with heavy malleable cast iron lids and brass fixing screws shall beprovided and fixed at all junctions and necessary angles and bends of conduit. Allboxes installed in false ceilings shall be so positioned that they are easilyaccessible.

Where conduits are installed in positions exposed to the weather or in damp orother specified locations, they shall be of the PVC covered rubber packed metallictype. All flexible metallic conduits and adapters shall comply with BS 731 Part 1.

Conduit installed in dry indoor locations shall be the standard metallic type. Allexposed conduits shall be painted with two coats of paint to match with the colourof the wall/ceiling.




E - 55

All joints shall be securely bolted together and the whole assembly shall be fixed atintervals not greater than 1.2 m.

The trunking shall be fitted with a continuous lid made from the same material or

cover secured to the trunking by means of cadmium plated mushroom headscrews spaced not greater than 450 mm. Where trunking terminates in any pieceor a apparatus, a proper flanged coupling piece shall be used, securely bolted tothe trunking and to the piece of apparatus.

Solid end stops shall be purpose made steel sheet terminal piece. In case oftrunking covers which are cut, the Contractor shall ensure that the cut edges aretrue and match with the adjacent covers. The over lapping of covers will not bepermitted and under no circumstance, gaps in covers shall be accepted.

Where the trunking passes through walls or floors, sections of cover plate shall befitted before erection such that the cover plate extends approx. 50 mm beyond the

finished surfaces of the walls or f loors.

The wiring within the trunking shall be securely held in position by means ofsuitable clips fitted at regular intervals throughout the run of trunking, separatecable clips being provided for each compartment of the trunking.

Where cables are to be enclosed in the same trunking compartment andconnected to different distribution boards i.e. single phase and 3 phase powercircuits, they shall be distinguished by separating the cables with insulated tapingat intervals of 1.20 metres together with an approved means of identification sleeveadjacent to each taping that clearly denotes the circuit type and reference.

Each circuit within a trunking shall be taped together at intervals of 800 mm withthree wraps of high quality PVC insulating tape.

Vertical sections of trunking over 8 metres in length shall be fitted with staggeredinsulated tie or studs fastened to the back of trunking at every 3 meter to supportthe weight of cables. Where trunking passes through walls or floor, fire barriersshall be fitted internally and externally as described in Regulation 523-6 and 528-1of 15th Edition of IEE regulations or the latest edition.

The trunking shall also be bonded to each piece of apparatus to which it is directlyconnected by means of copper bonding strips of 13 x 2mm and also at each jointand bend.

All connections between trunking and/or busbar chambers to each item of switch,switch fuse or distribution board are to be made direct and without intermediateconduit or conduit couplers. The top and/or bottom plates of the items beingconnected are to be removed and a suitable dimensioned slot is to be cut toaccommodate the cable plus a further 6 mm all round with similar slot in theappropriate position in the trunking or busbar chamber. A laminated paxolin fillet 5mm thick is to be inserted between the item plate and trunking and busbarchamber with a slot 6 mm smaller all round than the slot cut in the metal parts sothat damage to the cable is avoided.




E - 56

The item of equipment is to be fixed to the trunking of the busbar chamber throughthe paxolin fillet into the top of the bottom end plate fixing holes, using the endplate fixing screws. The paxolin fillet is to be cut accurately and smoothly to thesame outer dimensions as the end plate.

All covers shall be easily removable and the trunking shall be properly spacedaway from any surface which may prevent this.

Trunking shall be fixed to walls, etc., with No.12 round headed wood screws tolengths depending on material in which the fixing is made. The Contractor shallinclude for providing all necessary supporting devices for trunking and adequateallowance shall be made for expansion and contraction of long runs. All cabletrunking shall be fixed clear of the respective surfaces by means of not less than 6mm spacers.

Shape of purpose-made pieces of trunking shall be determined by dimensions

obtained from site. On-site welding shall not be allowed. Flexible expansion jointsshall be provided in trunking runs as necessary.

Cable trunking shall have 25% spare capacity for the installation of any futurecables. Due precaution shall be taken to ensure that the correct space factor ofthe fully loaded trunking is provided in accordance with IEE regulations.

The minimum cable trunking requirement shown on the drawings shall besupplemented if required. Proposals for any such supplementary trunking shall beindicated on the installation drawings at the time of submission for approval. Itshall be clearly understood that the introduction of supplementary trunking runs orthe increase of compartment size will be allowed only at the discretion of the

Engineer and if accepted shall be regarded as a concession to permit cables thatwould otherwise be enclosed in conduit, to be accommodated in trunking.

Cable trunking installed on the exposed surfaces of walls shall be arranged withthe respective wiring compartments in the vertical plane with all conduitsemanating from the top, bottom and side of the assembly. In all cases, the accesslid shall be fitted to the exposed side of such assemblies.

Cable trunking installed either in voids or on the soffit of exposed ceilings whereverpossible shall be installed with the compartments arranged in a horizontal planewith the access lid at the lower edge of the trunking and all conduits connected tothe top and sides of the assembly.

The cable trunking shall be installed immediately above the false ceiling structurewithin ceiling voids. Trunking shall be supported by purpose made bracketssuspended from the structural concrete ceiling slab soffit.

Conduits used to complete the final section of each circuit from the generaltrunking system installed in the ceiling voids unless otherwise stated shall emanatefrom the top of the appropriate compartment of the cable trunking and risevertically to the structural soffit. The conduits shall be taken then through thestructural slab or be arranged to drop vertically to terminate at the various lighting,power, telephone or auxiliary service outlet points.




E - 57

For recessed cables terminating in recessed DBs, a recessed trunking shall beused with cover flush with the outer surface of wall. In case of new cables beinginstalled on the surface of existing wall, surface trunking shall be used. In bothcases, cables shall be terminated with glands of appropriate size.

The Contractor shall include for the preparation of detailed installation drawings ofall trunking and conduits runs and submission of these to the Engineer forapproval. These drawings shall be submitted to the Engineer as quickly aspossible for approval before installation.

The whole of the trunking shall be installed in a workmanship like manner so that itpresents a neat appearance and shall ensure that continuous cable access ismaintained so that cables may be laid in the trunking and not drawn-in.

Installation of wiring in trunking shall in general, follow the details give in ‘ConduitInstallation’.

B.9 CABLE TRAY

The Contractor shall include for the supply and installation of cable trays whereverindicated or as required for the execution of works. The cable trays shall be of theconventional perforated pattern with return flanges manufactured from a minimumof 16 swg or above M.S. sheet. The cable trays shall be hot dip galvanised towithstand the external climatic conditions of Qatar.

Wherever the cable trays are exposed to outside conditions, i.e. laid on the roof,

these shall be covered with galvanised steel sheet of 20 gauge to protect from heatand rain.

Sections of tray shall be jointed together with mushroom head screws, nuts andspring washers. These shall be plated or treated with rust inhibitor. The screwsand nuts shall be so arranged to ensure that no projecting screw threads occur onthe part of the tray upon which the cables are laid. The cable trays shall besecurely fixed to purpose made brackets with space behind to allow the insertion oftools for the tightening up of nuts. The brackets shall be spaced in such a way soas to prevent sagging. The Contractor shall ensure that overall tray arrangement isrigid. The Contractor shall include for all cable trays necessary to be fixed at theterrace or above the false ceiling.

The cable trays shall be of sufficient width to take all cables without crowding andshall allow for possible future additions to the proportions of the presentrequirements. Cables shall be run singly and stacking will not be permitted.

Cable trays fixed to walls or flat ceilings shall be installed with the flange outwardsor downwards respectively to suit and shall be fixed with an approved fixing withspacing and washers such that the tray is at least 25 mm from the surface of thewall or ceiling. Earth continuity shall be maintained between each section of cabletray and total run of tray shall be effectively bonded to the nearest earth continuityconductor at both ends.

Each length of tray shall be securely bolted to an adjacent length with sufficientoverlap to prevent sagging and twisting. Normal bend of not less than 450 mmshall be used. The method of fixing each run of cable tray shall be approved by




E - 58

the Engineer prior to installation. In all instances, the cable trays shall besupported from the structure of the building.

Wherever the tee or flat bends are required to be used, they shall be factory made.

No cutting of tray shall be permitted. Wherever necessary, the same shall beproperly painted with the prior permission of the Engineer. Deviation from thestraight shall, if possible, be made with purpose made bends. Where purposemade bends cannot be used, the tray may be cut and the bends fabricated on site.

All the supports shall be fabricated out of galvanised angle iron or uni-strutchannels. If not, the M.S. supports shall be painted with two coats of red oxide andtwo coats of lacquered paint of approved colour.

B.10 WIRING ACCESSORIES

1.0 General

1 The Contractor shall include in his cost for supply, erection, and connection ofall specified wiring accessories in specified locations, unless otherwisedirected, from the specified manufacturers.

2 Details of circuits are shown on the electrical drawings and are to be read inconjunction to these specifications.

3 All accessories necessary to form a complete installation should be availablefrom a single manufacturer to ensure uniformity and visual compatibility. This

should include all switches, power outlets and ceiling accessories to relevantBritish Standards specifications and CE marked.

4 Selected manufacturer shall provide 20 years warranty for Electro mechanicalwiring accessories (Switches / Sockets / Power Modules etc.) and minimum10 years for mains operated electronic devices (Computer Jacks / TelephoneJacks / Dimmers / TV / SAT / FM Sockets etc). The manufacturer shallguarantee the metal cover plate finish for minimum 10 years.

5. All socket outlets should have unique 3 pin operated safety shuttermechanism. All socket outlets should be Double pole switched as standardwith the contacts arranged such that the neutral pole makes before and

breaks after the live pole.

To ensure easy and correct connection of conductors during installation andmaintenance the accessory terminals shall: -

1. Be easily identified by White marking on a dark ground.

2. Be grouped together and where possible like terminals will be in line.

3. Terminal screws to be upward facing, captive and backed out prior toinstallation.

Terminals should be so shaped to provide a generous lead in to theconductor.




E - 59

5. Switches Should have minimum 3mm contact gap.

2.0 Codes and Standards

All materials required for installation under this specification shall be subjectto the approval of the Engineer. Where no specific indication as to the type orquality of material is indicated, a first class article to the Engineer’s/Architectsapproval shall be furnished.

i. Switches

The switches shall be single pole type of 240 V grade. These shall be ofrobust construction to provide long life of operation.

The cover plate shall be of Screwless metal finish in Lacquered Brushed Steel

to avoid finger prints or marks on general usage for all other schools unlessmentioned & subject to Architect's approval with 20AX single pole gridmounted switches.

The switches shall conform to BS EN 60669-1 and shall operate on downwardmode only. Wherever more than one switch is shown on the drawings, theyshall be multi-gang and where they are wired with different phases, phasebarriers shall be used with the warning label or separate boxes shall be used.External switches shall be metal clad type with powder coat and weatherproof range manufactured in polycarbonate to IP 65.

IEE WIRING REGULATIONS:

All products should be designed and manufactured to allow the designer andinstaller to comply in all respects with the 16th Edition of the IEE WiringRegulations. The wiring regulations are now dual numbered and have beenincorporated into the British Standard System under BS 7671: 1992incorporating Amendment No.1, 1994.

All switches shall be of standard concave rocker type with maximum 3 gangson a single plate except for grid modules. The rockers shall be of samematerial as the plate with easy to operate action with no access to live partsor visible arc flashes from the front of the switch. All plate switches more than3 gang shall be on twin plate except for grid switches.

All switchs shall have large terminals to accept 2 x 2.5 mm2 conductors. Allterminals should have insulated bell mouth terminal guides for each oftermination. All switches should have slim rear projection and be suited formounting in 16mm/25mm/35mm/47mm deep boxes.

All switches shall be 20AX rated and suitable for switching fluorescent loads.

All switches to have clear legible white markings on dark backgroundidentifying type nos., rating, voltage, terminal labels, name of manufacturerand standards.

All switches shall comply with BS EN 60669-1: 2000.




E - 60

ii. Switched Socket Outlets

The socket outlets shall be of switched socket combination type of 13 A rating

with double pole switching for switches and with Hi-integrity dual earthterminals. These shall be 3 pin, 240 volts with 3 pin child-resistant safetyshutters conforming to B.S. 1363. Twin socket outlets shall be usedwherever two sockets are shown together unless otherwise mentioned.

All socket outlets shall be adequately earthed to terminate direct into outletand a flying lead shall be installed between outlet and outlet box. Theswitched socket outlets exposed to external environmental conditions shall beweather proof in galvanised ceiling. The switched socket outlets shall beprovided with indicating lamp to indicate the 'ON' status of switch, unlessotherwise instructed by the Engineer.

All switch socket outlets shall be connected in ring circuits unless otherwisespecified. The connected load for each ring circuit shall be considered as1000 watts. External switches shall be metallic type switched and weatherproof to IP 65.

1. All socket outlets shall be of types specified and shall have plates finishes tomatch the lighting switches unless otherwise specified.

2. All switch socket outlets shall comply with BS1363 Pt2.

3. The 13A switch socket outlets shall have double pole switching. The frontshall be shuttered to operate only on insertion of all 3 pins. Terminal capacity

shall be of adequate size to accommodate 4 x 2.5mm2 cables. All terminalsshall be box type with captive screws and grouped on the top for ease ofaccess during installation.

4. Wherever specified, switch socket outlets shall incorporate dual earthterminals to meet the requirements of section 607 of BS 7671, IEE wiringregulations when used in ring network. For switch socket outlets suppliedfrom UPS, clean earth provision shall be incorporated. Twin switch socketoutlets with outboard rocker shall be installed where shown on the drawings.

5. For emergency circuits, switch socket outlets shall incorporate red rockers onwhite front plates or red rockers on red front plates.

6. The switch socket outlets shall match the lighting switches and the otheraccessories.

7. Where indication is required, the switch socket shall have neon built into thecover plate providing illumination at a viewing angle of 1750.

iii. Connection units

Wherever connection units are shown on the drawings, provide switched fuse

connection unit with indicating lamp. These units shall also be provided withflexible cable outlet plate and shall be of approved finish similar to otheraccessories conforming to BS 5733:1995. All connection units to comply with




E - 62

construction, approved finish similar to other accessories of very high quality. All flex outlets other than the ones for exhaust fans shall conform to BS 5733.

FLEX OUTLET PLATE UNSWITCHED AND UNFUSED:

Single gang 20 amp Flex Outlet plate is to be unswitched unfused andcomply with BS 5733: 1995, the General Section of this specification coveringwiring accessories together with the following requirements.

The flex outlet shall be supplied with three pairs of terminals each suitable formin 2 x 2.5 mm2 conductors and a 1.5 mm2 flexible cord. A cord grip shouldalso be fitted.

A screwless cord grip, which upon insertion of the cord automatically holdsand clamps the cord.

A flex outlet, supplied blanked off with a removable plug, positioned in the

lower edge of the front plate.

v. Ceiling Rose

Ceiling roses shall be of approved manufacture and be of PVC mouldedwhite finish conforming to BS 6972 (plug-in type). All ceiling roses shall befitted with integral enclosure and earthing plate or connection to comply withKahra-maa regulations and shall be fitted with a break joint ring where usedon recessed conduit boxes. The ceiling roses shall be plug-in socket type.The ceiling roses for light fittings with emergency lighting battery pack to havea different colour code for identification.

1 Supply and install ceiling switches of suitable ratings, on locations showed onthe drawings.

2 Supply and install ceiling accessories like batten holders, ceiling roses etc. onlocations showed on the drawings.

3 All lamp holders batten or pendant shall be of Shockguard type i.e.disconnect automatically on bulb removal & must comply with BS 7895: 1997& BS EN 61184: 1995 T2.

4 All lamp holders shall be Bayonet Cap B22.

5 Wherever shown on the drawings, use 3 pins (normal lighting) and 4 pins(emergency lighting) plug in ceiling roses for lighting point connection. Theplug in ceiling roses shall comply with BS6972 and BS5733.

6 Plug-in ceiling roses with per-wired assemblies of 2mtr & 3mtr with PVCflexible cable or LSF cable shall be used in large buildings, with extensivefalse ceiling systems. The pre-wired ceiling rose shall be fitted with therespective length of heat resisting PVC insulated & sheathed flexible 0.75mm3 core circular cable complying with BS 6141 or the LSF - low smoke zerohalogen insulated & sheathed flexible 0.75mm 3 core circular cable to complywith BS 6500

7 Ceiling roses shall be 4 Pin type with terminals for Phase, neutral, earth,auxiliary & ‘loop in’ terminals will each accept 5x0.75mm, 5x1.00mm,4x1.5mm, 3x2.5mm or 2x4.00mm conductors as per BS 6972 & BS 5733




E - 63

8 The ceiling roses must have a clear base & pre-cut aperture for ease ofinstallation.

9 The static suspension load for plugs, sockets & pre-wired assemblies mustwithstand 5 kg max.

vi. Double Pole Switch

The switches where indicated for water heater, hand driers or for otherequipment etc., shall be double pole, 20 or 32 or 45 ampere rating based onthe load current. The switches shall have indicating lamps and the coversfinish shall match with lighting switches. All DP switches shall conform to BSEN 60669-1: 2000. All external DP switches shall be metallic type in plant,storage rooms & heat generating areas and must be of weather proof to IP

65.

A 20 amp D P Switch complete with neon indicator all supplied within a 86mm x 86 mm front plate complying with both BS EN 60669-1: 2000, theGeneral section of this specification covering wiring accessories and thefollowing requirements.

The switch will be double pole with the contacts arranged such that theneutral pole makes before and breaks after the live pole. When the switch isin the open position the contact gap must be a minimum of 3mm. The switchrocker must include an indelible red flash, preferably a moulded insert, toprovide indication that the switch rocker is in the 'ON' position.

A screwless cord grip which upon insertion of the cord automatically holdsand clamps the cord.

A flex outlet, supplied blanked off with a removable plug, positioned in thelower edge of the front plate.

A neon indicator is to illuminate when the switch is placed in the closedposition. The neon indicator assembly and lens should form an integral partof the switch rocker.

vii. 45A D.P. Switch – Cooker Control Units

The switches where indicated for cooker outlets shall be double pole, 45amps fixed only in a double gang box. The switches shall have indicatingneon lamps and the covers shall be of metallic finish. All external DPswitches shall be in similar finish of cover plates suiting to the switches.

1. Cooker control units shall be wired to separate circuit in the distributionboards.

2. In case of cooker control units with integral socket outlet shall be withinstalled 300mm above kitchen worktops and shall be placed at least 2m

away from the washbasin and away from the cooking range.

3. Cooker control units must be with neon indicators.




E - 64

4. Suitable cooker outlet plates shall be installed for wiring to the cooker.

5. Cooker control units shall comply with BS 4177:1992 & the CookerConnection unit conforms to BS 5733: 1995. All 45A DP switches in the

range conform to BS EN 60669-1:2000.

6. When 45A DP Cooker Control units used along with 13A Socket must alwaysbe connected with a 45A Cooker Connection unit.

viii. Wiring Accessories Box / Enclosure

These shall be flush steel boxes with adjustable lugs, brass earth terminaland manufactured to BS 4662. The depth of the box shall be minimum 35mm and deeper upto 47mm if necessary in order to accommodate wiring of 6mm2. The box thickness shall not be less than 1.0 mm.

ix. Time Switches

Time switches shall be photo-resistor type mounted remote from thecontactor at the place approved by Engineer. These photo-resistors shall beequipped with lux adjustment to operate the switch at the desired light level.

As an alternative to above, the electro-mechanical time switch can beprovided. The time switch shall be suitable for solar time adjustmentthroughout the year. It shall have 12 hours reserve winding so that the powerfailure upto 12 hours will not change the operating time of the time switch.

The contactor shall be of 240 volts 50 Hz, 1 Phase A.C.coil. It shall conformto relevant British Standard.

x. Contactors

Contactors shall be manufactured and tested in accordance with B.S. 775 /IEC 158.1 and shall be sized in accordance with the requirements shown onthe schematic or DB schedules.

Category AC1: Applies to all types of A.C. load with a power factor not less than 0.95.Category AC2: Applies to starting, plugging of slip ring motors on closing or opening. Themaking and breaking current of the contactor should not be less than 2.5times the rated current of the motor.Category AC3: Applies to squirrel cage motors with breaking during normal running. Themaking current of the contactor should not be less than 6 - 7 times the ratedcurrent of the motor while the breaking current shall be equal to the ratedcurrent of the motor.Category AC4: Applies to starting, plugging of squirrel cage motors. The making and

breaking current of the contactor should not be less than 6 - 7 times the ratedcurrent of the motor.




E - 65

The contactor shall be capable of withstanding the fault ratings of the systemwhen protected by HRC fuses. These HRC fuses shall form part of the faultfused switch where isolation is required. Fuses shall always be installed onthe live side of the contactor.

xi. Dimmer System

The Contractor shall supply, install and commission the dimming systemconsisting of (4 No. 1.5 kW dimmers racks for auditorium and 1 No. 1.5 KWdimmer rack for video projection room ) enclosed in suitable sheet steelenclosure with louvers for heat dissipation and complete with bus MCB andterminal black for safe operation of the system.

The specification of individual dimmers shall be as under:

a) Dimmer pack for dimming tungsten filament / low voltage halogen luminariesshall be 40W/VA-220W/180VA used with max 3 Nos. of transformers in 1Module size or 60W/VA-400W/320VA used with max 5 Nos. of transformersin 2 Module, 240V, 50 Hz., suitable for electronic ballasts. The dimmers mustemploy the latest microcontroller based circuitry to provide electronic softstart & overload protection. The dimmers must be suitable for use with goodquality electronic or wire wound transformers. Dimmers must conform to BSEN 60669-1-1 & BS EN 55015 for RFI suppression. Fused GLS TungstenFilament lamps to BS EN 60065: 1996 & BS EN: 60432-1,2 rated at230/240V.Unidirectional current sensing, while being used with wire-woundtransformers for low voltage lighting. These dimmers continuously monitor the

drive conditions to the transformers, which require essentially, bi-directional A/c supply at their input terminals. If, due to some fault condition, the supplyto the wire wound transformer is detected to be unidirectional, which couldresult in overheating &/or damaging the transformer, the dimmer switchescircuitry automatically stops supplying the transformer after a few cycles ofdetected unidirectional supply. The dimmers monitor the load current to helpprotect against overheating in wire wound transformers & to preventoverloading of the dimmer for long term reliability.

Soft start, which gradually increases the light output, from the load over 1 to 3seconds after switch on. The Soft start feature is beneficial when used to dimMains Voltage Tungsten Halogen Lamps which have inherent very highinrush current at switch on.

b) Dimmer pack for dimming fluorescent luminaries shall be of an analogue 1-10Vcontrollable ballast inputs & requires only a single two-core wire connection.The dimmer operates by applying a variable resistance to the ballast 1-10Vcontrol input. Separate on/off switch to be used to isolate the luminaires inuse.

Preset adjust to set minimum light level. Preset adjust for use with multipledimmable ballasts. Upto 4 ballasts an be connected to one dimmer.

This 1-10V fluorescent dimming controller can be used to dim 4x18W or2x36W fluorescent tube luminaries when connected through HF Fluorescentcontrollable ballast with 1-100% dimming. Wires must be connected to thecorrect dimmer terminals. DO NOT connect earth to dimmer.




E - 67

Additionally the service and junction boxes shall comply with IEC 60670 Parts1 and 23 - Boxes and enclosures for electrical accessories for household andsimilar fixed electrical installations – Particular requirements for floor boxesand enclosures. Certificates of Compliance shall be provided.

All service outlet boxes shall be installed with wiring devices from the samemanufacturer, for better coordination of works, warranties and responsibility.

The following standards and specifications must be complied with:-

BSEN 50085-1:2005 Cable Trunking systems andcable ducting systems forelectrical installation – General Requirements

Draft pr EN 50085-2-

2

Cable trunking systems and cable

ducting systems forelectrical installations. Cabletrunking systems and cableducting systems intended formounting underfloor,flushfloor or onfloor

IEC 60670 Pts1 &23: 2007

This standard applies to boxesand enclosures intended tobe installed in any kind offloor.

BS EN 10327:2004

BS 4678 Pt4:1982

Continuously hot-dip coated stripand sheet of low carbon

steels for cold forming.Technical deliveryconditions.

Specification for cable trunkingmade of insulating material.

I.E.E. WiringRegulations

BS7671 – 17th Edition WiringRegulations

Inscreed floor PVCu Ducts :

Contractor to install PVCu trapezoidal ducts wherever specified or shown on thedrawings. PVCu ducts to be extruded from 100% recycled PVCu. Fittings tobe formed by injection moulding. All PVCu ducts shall be matt white finish,heavy gauge, medium impact resistance, non flame propagating Class 1spread of flame. The PVCu ducts shall be from the same manufacturer asunder floor system. The size of the ducts to be accommodate all thenecessary power and data wires in separate ducts. All accessories such asbends, risers, couplers and GI steel fixing clips shall be installed from thesame manufacturer to deliver a complete under floor system.

PVCu ducts should conform to BS 4678-4:1988.




E - 69

iix. Presence detector

The presence detector shall be Passive Infra-Red (PIR) or Microwave type.The presence detector shall be ceiling mountable and flush. The presence

detector shall be work on 240V AC. The output terminal shall be rated for10XA 240V AC.The presence detector shall have 360 degree coverage. Thepresence detector shall cover a diameter of 5.0 meter presence detection anda diameter of 7.0 meter movement detection, when mounted at 3.00 meterheight. The presence detector shall have provision to set operating time afterthe last movement detection from 1 minute to 1 hour via a potentiometer. Thepresence detector shall have provision to set brightness level from 5 lux to1000 lux via a potentiometer. The presence detector shall have provision tobe connected in parallel. The presence detector shall be rated for anoperating temperature of -10oC to +45oC.The presence detector shall berated for a storage temperature of -20oC to +60oC.The presence detectorshall be rated for IP41 ingress protection. The presence detector shall have a

fire resistance up to 650oC.The presence detector shall comply with IEC60669-1, IEC 60669-2-1 standards. The terminal shall have provision forconnecting 0.5mm2 to 1.5mm2 flexible or rigid cables.The presence detectorshall have LEDs for testing and IR acknowledgement.

B.11 LIGHT FITTINGS

The Contractor shall include in his costs for supply, erection, connection of allspecified light fittings complete with suitable lamps in positions specified, unlessotherwise directed. No lighting fittings shall be purchased until authorisation has

been received, in writing from the Engineer. This authorisation shall be sought bythe Contractor in good time in order to allow the programme of works to continueunaffected. All light fittings shall be of types specified or similar and approved. Noalternative light fitting will be considered unless permission is received by theContractor in writing from the Engineer.

The luminaires shall comply with EN 60598-1 and got CE and ENEC marking.Where tube pendants are required, ball and socket back plates shall be usedunless otherwise indicated.

The body thickness of sheet steel of the light fittings shall be minimum 0.6 mm andthe luminaries shall comply with BS EN 60598.

All aluminium louvers shall be made of minimum 99% purity with anodization.

The Contractor shall provide certificate from an independent testing laboratoryconforming to various standards for all proposed light fittings (i.e. IP rating,photometric test), which shall be submitted along with the submittal.

All fluorescent fittings shall be complete with electronic ballasts as per EN 55015and harmonics compatibility unless otherwise indicated and power factor correctioncondensers to give a minimum power factor of 0.9 lagging and control gear noiselevel shall be limited to 24 dB.

The Contractor shall provide and fix plain pendants. Each pendant shall compriseof ceiling rose, a suitable length of flexible cord in relation to the mounting height ofthe fitting and BS lamp holder with H.O. pattern skirt.




E - 70

Lamp holders incorporated in tungsten luminaires shall comply with BS 5042 Part 1in the case of bayonet cap holders and with BS 5042 Part 2 where screw type lampcaps are employed. Lamp holders incorporated in fluorescent luminaires shall

comply with BS 5042 Part 4.

Ceiling roses shall be manufactured from either rigid PVC or bakelite. Wiring fromthe ceiling rose to the lamp holder shall be carried out using heat resistant flexiblecord of minimum size 1.0 mm.sq. The insulated heat resistant flexible cord may bebutyl rubber or equal that can stands 85°C minimum. A plug and socket type ceiling rose 3-pin white colour shall be provided for allrecessed luminaires and 4-pin red colour supply to emergency fittings, locatedwithin each reach of the aperture provided for the luminaire.

The light fitting shall not be considered complete without the lamps of specifiedwattage. The connections between the circuit wiring and fitting shall be effected by

means of fixed nylon connector terminal block mounted in the lighting outletconduit box or ceiling rose above the false ceiling. All metal work shall be bondedto earth.

Where surface mounted light fittings are installed, conduit boxes, either of the loop-in type or standard type shall be installed above each fitting position. Extensionrings shall be fitted as necessary so that the bottom of the ring is flush with theunderside of the ceiling. White break joint rings shall be provided between thefittings and conduit box to mask the joints as deemed necessary by the Engineer.

Light fittings designed for mounting on a flush ceiling shall be mounted on asurface outlet box. The Contractor shall supply and install a suitable metal support

for each fitting. In areas where the ceiling is of the suspended type, the weight ofthe conduit and light fittings shall under no circumstance be carried by this type ofceiling and suitable two independent fixings shall be provided and installed by theContractor to carry the weight of the fittings.

All lighting fixtures are to be suspended as required by Kahra-maa regulations.Ensure that the light fittings are adequately ventilated and where appropriate,suitable spacers shall be installed to give a minimum clearance of 6 mm betweenthe fitting and the finished ceiling.

In the buildings where steel trusses are provided, all the light fixtures shall besupported from the trusses or the purlins with the help of double chains towithstand the weight of the light fixture.

All lamps throughout the installation shall be supplied and fixed in position as perthis contract. They shall be of the sizes and types specified. All lamps over 150watts shall be of screwed cap-type. The lamps shall be supplied complete withend caps suitable for the fitting to which it is to be attached. The lamps shall berated for 240 volts. Unless otherwise specified, lamps shall be coiled coilconforming to BS 161, 555, 1853.

Fluorescent tubes shall be triphosphor type with minimum colour temperature of4000 K and colour rendering index of 85% certified tubes will be used only. Each

and every fluorescent light fitting shall be fitted with power factor correctioncapacitors.




E - 71

All lighting luminaires shall comply with BS 4533 and 5225 and fitted with bi-pinand bayonet end caps as necessary. All control gear associated with fluorescentfittings shall comply with BS 2818 and 4017 and shall be of the electronic starttype. Final connections to luminaires shall be by 3 core heat resisting flexible

cables connected as previously described.

The Contractor shall ensure that fluorescent fittings are connected to the threephase distribution boards such that there is no stroboscopic effect or error.

With the exception of certain light weight domestic and commercial types of lightfittings, no fittings shall be suspended by means of flexible cables. Where lightfittings are suspended they shall be by means of purpose made metal supports.

In case of hazardous locations, the light fittings shall have Zone 1 classification asper IEC-79, B.S. 4683 and B.S. 5501 and rated IP 66. The luminaires shall have adirect entry fitting with a terminal block for mains supply and a switch live terminal

facility. The terminals shall be capable of accepting conductors upto 4 mm². Thefitting should be swivel mounted to allow for a 90° swing for relamping. Theluminaire casing shall be of aluminium with an exterior finish of white enamel.

All fluorescent light fittings shall be provided with electronic solid state two pinstarter device for different sizes of lamps (linear fluorescent lamps from 600 mm to1500 mm, 18W, 36W, 58W, compact fluorescent lamps and 4 pin 2D lamps).

Electronic ballasts shall be used with fluorescent lamps for dimmable lights. Theelectronic ballast shall be suitable to work with 26 mm dia fluorescent lamps (TL-D). The main function groups of the electronic ballast shall be HF generator withcurrent limitation, power supply consisting of rectifier with harmonic limitation and

HF filter for radio interference suppression.

The components of the dimming system with electronic ballast shall be:

* Fluorescent lamp (RS) dimmer capacity - 1200 VA

* Electronic ballast

* Resistive base load eg., 25W incandescent lamp

* Dimming range - 100 - 30%

For all non-dimmable lights, electronic starters shall be provided.

Fluorescent Lamps

The Contractor shall ensure that the fluorescent lamps shall have the followinglumen output:

Tube Luminaire Output

18W 1300

36W 3300

58W 5200




E - 73

Each emergency luminaire is proposed to be of the two LED lamp type wherebyeach LED is gimble mounted allowing adjustability with regard to light throw toaccommodate on site adjustments as may be necessary.

Minimum LED lamp life is to be 50, 000 hours.

External units shall be rated to operate at 50oC.

The design drawings have been based upon the above and the ratings andlocations as provided on the layout drawings. However, the contractor maypropose acceptable alternatives, this however will require the contractor toprovide lighting calculations to confirm the illumination levels as required above.

B.13 WIRING SYSTEMS

The method of laying conduits/cables and its wiring shall be carried out asfollows:

1. The Contractor to provide PVC conduits and accessories on the surfacebelow the soffit but above the false ceiling.

2. G.I. trunking shall be run from DB to all the Corridors and PVC conduitsshall be tapped from this G.I. trunking.

3. PVC conduits to run concealed in the walls up to the service outlet.

4. Where there is no false ceiling, the conduits for light points shall be laidwithin the concrete roof slab.

5. Conduits for the sockets shall be laid in the floor slab and laying in thescreed shall be avoided as far as possible.

B.14 INTERCOM SYSTEM

The Contractor shall provide 100 lines intercom(digital type) exchange with outletpoints as shown on the tender drawings. The system shall be suitable for 1 phase,240 volts, 50 Hz. A.C. supply. Contractor shall include everything necessary toenable the telephone exchange to be commissioned and work efficiently.

This inter-communication system shall utilize key operated loudspeaker /microphone instruments. They shall consist of desk type for Administration areasor wall mounted sub instruments for all Classrooms, Labs, Stores, Auditorium,Guard and Gardener Rooms and master instrument. It shall be possible for themaster instrument to call or be called from any of the sub instruments. Subinstruments shall not be allowed to talk to each other. The wall mounted sub-instruments shall be flush type, vandal proof and mounted at 1250 mm A.F.F.L.




E - 74

All cables within the buildings shall be supplied and installed as part of thiscontract. The system shall conform to the following standards:

a. The International Telegraph and Telephone Consultative Committee (CCITT)

b. Electronic Industries Association (EIA)

Prior to ordering / installation, the following documents shall be submitted by theContractor for approval:

i. Outline drawings showing general arrangement and approximate dimensions.

ii. Electrical specifications and descriptive literature.

iii. A listing of factory tests performed.

iv. A list of site tests which will be performed.

v. Shop drawings.

The system shall comprise of and function as follows:

a. A fully electronic communications 100 lines exchange system for speechtransmission shall be used to control all the rooms from a master station.The master station shall be equipped with a directory of reference numbers.

b. If any fault occurs in the line it shall be disconnected.

c. Incoming calls shall be announced by an intermittent ringing but not fully putthrough. If a call is not answered within 30 seconds, it shall be disconnected.

d. All desk station instruments shall be equipped with a loudspeaker andmicrophone handset for confidential conversations and also should workwithout lifting the handset if required.

e. The master instrument shall be situated in the Secretary Room at groundfloor or as approved by the Client and the exchange and power supply shallbe located in the Telecom room in the Administration area as shown on thedrawing.

f. The intercom system shall work with a power supply of 240 volts, singlephase, 50 Hz.

g. The standard telephone multi-pin twisted cable shall be used. The total line

resistance, exchange to station shall not exceed 200 ohms per wire for thisequipment using speech transmission via the 50 volt DC telephone networkcabling.

h. The cabling distribution within buildings shall be independent of the PABXtelephone system which is provided by Ooredoo.




E - 75

B.15 COMPUTER SYSTEM

The Contractor shall engage an approved specialist subcontractor to carry out all thecomputer services including supply, installation, testing and commissioning forproviding the computer system as per the specifications detailed herein and asshown on the contract drawings.

1. The subcontractor shall provide the complete raceways for the system. The

raceways shall include heavy duty PVC conduits, pull boxes, trunking, cable

trays, cables accessories, etc for this system. The minimum size of conduits

shall be 25 mm.

2. The subcontractor shall supply , install, label, terminate, test and commission

the computer cables. The cables shall be UTP Cat. 6aThe computer cables shall be laid from the user outlets up to thecommunication cabinet without any joints in between.

3. The Contractor shall provide 2 no.communication cabinets at the following

locations as per the following specifications:

Computer Room Main Server Cabinet ( room G – 23 ):a. 800mm wide x 1000mm deep,45U(unit rack), with front glass door with

locks and keys.

b. Metal accessable back door with locks and keys. Castors, side opening

doors with locksc. Minimum 4 way fan tray with fans.

d. 12 Power distribution sockets with fuses.

e. Vertical cable manager.

f. Intelligent patch panels(24 port, UTP Category 6a). Number of panels to

be sufficient to cater the number of cables pulled to the cabinet with a

spare capacity of 10%. The panels shall have LED indicators for each

port, centrilized LCD display indicator for all ports and built in pins and

circuitery to allow for remote monitoring of the connectivity status of

devices connected to each of their ports.

g. Fibre Optic Intelligent patch panel(24 port).The panel shall have LED

indicators for each port, centrilized LCD display indicator for all ports and

built in pins and circuitery to allow for remote monitoring of the

connectivity status of devices connected to each of their ports.

Supervisor Room Remote Cabinet ( room G – 43 ):a. 800mm wide x 1000mm deep, 19U(unit rack), with front glass door with

locks and keys.

b. Metal accessable back door with locks and keys. Castors, side opening

doors with locks

c. Minimum 2 way fan tray with fans.d. 8 Power distribution sockets with fuses.

e. Vertical cable manager.




E - 76

f. UTP cables Intelligent patch panels(24 port,Category 6a). Number of

panels to be sufficient to cater the number of cables pulled to the cabinet

with a spare capacity of 10%. The panels shall have LED indicators for

each port, centrilized LCD display indicator for all ports and built in pins

and circuitery to allow for remote monitoring of the connectivity status ofdevices connected to each of their ports.

g. Fibre Optic cable Intelligent patch panel(24 port).The panel shall have

LED indicators for each port, centrilized LCD display indicator for all ports

and built in pins and circuitery to allow for remote monitoring of the

connectivity status of devices connected to each of their ports.

The Contractor shall provide cable termination at both ends (at user end and patchpanel end) complete with labelling.

In addition the Contractor shall provide the following:

1. 220 x 5 metre long patch cord cable.

2. 368 x 1 metre long patch cord cable.

NETWORK REQUIRMENT:

Passive network to be installed in all the areas of the school. The passive networkshall include wired network points as well as wireless access points, as indicated inthe drawings.Separate patch panels to be provided for wireless network and shall be differentiatedwith different label numbers from the wired network.

Both networks should be split in two portions, main server and remote cabinet, andboth the cabinets should be connected through 12 core multimode indoor 50/125fibre optic cable.The fibre should be spliced and both sides should be equipped with fibre patch panel

fully loaded with the LC connectors.

There should be cable manager for each fibre patch panel.

MULTIMEDIA PROJECTORS

The contractor shall provide in all classrooms the following:

25mm dia pvc conduit embedded in the wall ( the white

board wall )is to be starting at a height of 1000mm and running in the slab

2800mm away from the wall.

The conduit shall be terminated with a 3’’x3’’ metal wiring accessories boxes

at both ends.




E - 78

Network point location should match with the layout of the network.

Soft copy of the documentation should be provided.

The spaces of Switches and Router’s equipment shall be provided as required.

The contractor shall engage an approved networks expert to make a survey andproduce a detailed report with recommendation on how to acheive the optimumwireless coverage for the complete school. The report shall include the signalstrength,location of wireless devices,devices specification, etc.

B.16 QATAR CABLE VISION AND VIDEO SYSTEM

The Contractor shall provide PVC conduits of 25 mm dia., trunking, splitters, wiringand outlets as shown on the drawings in every classroom. The outlets shall be ofmetal clad finish suitable for radio and cable T.V. Antenna on the roof and the headend equipment shall be supplied and installed by the Contractor. The contractor shallconduct all necessary tests and commission the complete system to the satisfactionand approval of the engineer.




E - 79

B.17 FIRE ALARM AND DETECTION SYSTEM

Addressable Fire Alarm and Detection System

General

The Contractor shall install, test and commission the fire alarm system as per thespecifications detailed herein.

The work under this section shall include for the complete performance of Fire Alarmand Detection System in accordance with the specification, drawings, Qatar CivilDefence Department requirements and relevant British standards.

The system shall be composed of an addressable system with latest technology in

the field to achieve maximum facilities in identifying the spot of fire outbreak and withminimum annunciation of false fire phenomena.

All the systems components such as control panel, sensors, manual call points,sounders, etc., shall be produced by the same manufacturer who has at least five (5)years experience in design, manufacturing, installation, commissioning andmaintenance of Fire Alarm System in the State of Qatar.

Design Criteria

The system shall comply with BS 5839, Part 1, BS 5444 Part 4 and latest

amendments if any.

The system shall include -

i. Addressable Fire Alarm Control Panel.

ii. Addressable Optical Smoke Sensor

iii. Addressable Heat Detector with rate of rise

iv. Addressable Manual Call Point.

v. Addressable Electronic Sounder.

vi. Addressable Interface Unitvii. Addressable Repeat Panel

viii. Built-in printer

ix. Indicators

x. Auto-dialling facility.




E - 80

System Description

Contractor shall provide a complete high quality fire alarm and detection systemcomposed of fully electronic hardware to achieve maximum facilities in identifying the

source of fire outbreak in its very early stages and minimize unwanted false alarms.

The system shall include but not limited to the following:

1. Addressable Main Fire Alarm control panel with Analogue Detection Techniquewith integral battery and charger, in-built keyboard (function keys to facilitateon-site programming), in-built printer, visual display unit capable of displaying 2lines of 40 characters each, indicators to denote "FIRE", "POWER ON","WARNING" and "FAULT".

2. Addressable Manual call points.

3. Addressable fire sensor - optical and beam type.

4. Addressable Electronic sounders with flashing beacon

5. Addressable fire alarm interface units

6. Addressable repeat panel

7. Built-in printer

8. Other accessories required and wiring

9. Auxiliary Components

10. Auto-dialling facility

11. RS port for communication.

The system shall as minimum include the following provisions :

1. All necessary software and/ or programming to provide a fully comprehensiveerror checking and signal processing system. This shall include analysis of theanalogue information received to reduce false alarms incurred by insects,electrical transients, faulty equipment, and the like, together with selfcompensation monitoring of sensor threshold levels in order to instigatemaintenance warning prior to "Fault or Failure" occurrences.

2. Automatically and electronically "Address" all field devices directly connected tothe loop circuits. This shall include to automatically memorising all field devicesconnected to the loop circuit and transfer same on to the on-board printer forread out if requested.

3. Automatically integrate field devices (manual call points, fire sensors, sounders,repeat panel, interface units) where connected to common or different loopcircuits to satisfy the "Fire Alarm System Operation Matrix" requirements asshown on the drawings.




E - 81

4. Removal of one or more field devices from a loop circuit shall not in any wayimpair the correct operation of all other field devices forming part of the loop orsystem.

5. Synchronization of all sounders whether operating in a continuous orintermittent mode including zoning of alarm for the desired firecompartmentalisation of the area to be individual zone alarm.

6. Identification and display of power supply faults from Graphics Mimic Repeatpanels and Interface units, etc.

7. Memories up to 256 events (i.e. Fire/Fault/Message) and transfer same to on-board printer for readout.

8. Accept, identify and verify "Fire Condition" information received from fielddevices (fire sensors, manual call points, interface units, etc.) and operate

sounders.

The system generally comprises of 4 No. individually integrated 2 wire loop circuitsderived direct from the central master alarm panel as denoted on the drawings. Eachintegrated loop circuit being suitable for accepting up to 99 addresses directlyconnected to the same.

System Hardware

Fire Alarm Panel

The addressable fire alarm control panel with analogue detection technique shallhave the following features:

a. Multi tasking micro-computer controlled

b. Self-contained and wall mountable or self contained and floor standing.

c. Integral switch mode power supply and battery chargers

d. 24 hour battery back-up

e. Printer and full keyboard as standard

f. Twin 24V master alarm circuits.g. Manned centre link connection facility

h. Twin Auxiliary relays configurable for Fire, Fault and/or warning operation




E - 82

Panel Indications

a. Alphanumeric Liquid Crystal Display for Fire, Fault and Warning messages (2lines of 40 characters each).

b. Back light facility on Liquid crystal displayc. Modules of light emitting diodes (Red - Fire, Green - Power on, Yellow -

Warning and Fault).

d. Two tone buzzer for fire / fault audible indication.

e. Audible bleep for keypad press confirmation

Controls

a Silence fault buzzer facility

b. Time and date setting facility

c. Master alarm START/STOP controlsd. Selector alarms ALERT/EVACUATE/STOP controls

e. Test for Liquid crystal display, Light emitting diodes and fault buzzer.

f. Printer ON, OFF, LINE FEED and TEST facilities

g. Disabling facilities for Outstations, Zones, Sectors, Auxiliary Relays, Masteralarms.

Panel - Loop Configuration:

a. Up to 8 addressable loops capacity

b. Each loop of minimum 1 km lengthc. Sensors, manual call points, sounders, repeat panels, interface units (all

addressable) shall be connected on the same 2 wire loop.

d. 99 addressable outstations per loop

e. Each and every device shall have a loop breaker relay to maintain the loopintegrity and keep the entire loops functional isolating only the particular faultydevice. A single open-circuit or short-circuit fault on a loop wiring shall notdisable any device on it and the system shall remain fully functional.

Labelling of devices:

a. 2 character label per outstation

b. 32 character label per zone

c. 32 character label per Input/Output line on Interface unit.

Event Log

a. A log of 256 previous Fire, Fault, Warning and status events.

b. Separate log of 100 previous fire events

c. 64 current fault and warning events




E - 83

Time Zone and Delay Block

a. 15 itemize programs over 7 day period

b. 16 delay programs of duration 0-10 minutes

c. Sectors can operate with delayed actiond. Any sectors can operate other sectors with delayed action

e. Auxiliary relays can operate ON or OFF with delayed action

System Monitoring

a. Loop communication shall be monitored for errors

b. Loop wiring shall be monitored for short circuit with response time of 0.5 second

c. Loop wiring shall be monitored for open circuit every 10 seconds or less

d. Outstations shall be monitored for disconnection from loop every 10 seconds or

less.e. All outstations shall be monitored for communication failure

f. Loop supply shall be fully monitored

g. Local communication, card functions and interconnection of electronics withinthe panel shall be monitored for fault.

h. Earth fault, keyboards, and printer shall be monitored for failure.

Engineering Techniques

If the control panel is interrupted by an outstation on its loop holding Fire or Fault

threshold, the control panel shall immediately perform a fast scan to locate theoutstation requesting attention and when it is located, 256 data readings taken fromit and used in conjunction to analyse the event.

A slow drift of analogue channel readings from a sensor requiring maintenance shallbe reflected by changes to the time average values, allowing alarm level off-setvalues to be created for event analysis, maintaining the sensors sensitivity andallowing the early detection of slow burning fires.

The response time from the sensing of a threshold at an outstation to appropriateevent action being taken by the control panel should be less than 1 second,independent of the system size. An even faster response of 0.5 second shall be

achieved if the threshold is from a manual call point within the system.

Other Features

a. Printer disables facility.

b. Information retrieval facilities for engineering set-up and system status.

c. Memory of configuration and engineering set-up

d. Clearing Fault and Warning facilities

e. Password protected access to engineering controls




E - 85

d. Addressable Manual Call Points (Pull type)

All manually operated contacts shall be addressable pattern and comply with

the following requirements:-

i. Comply in all respect with BS 5839:Part 2.

ii. Contain integral L.E.D. indication to denote operational mode, allnecessary electronic components and circuitry required to form anaddressable device for direct connection to the loop circuits originatingfrom the control panel, and operate in conjunction with the systemcircuitry/operational arrangements.

iii. Suitable for flush mounting, complete with box, test probe, transparentplastic fill covering to pull switch in order to avoid disoperation of the pull

switch.

e. Addressable Electronic Sounders with Flashing Beacon.

The electronic sounder shall meet the requirements of BS 5839:Part 1. It shallbe electronic addressable pattern with two link selectable volume - 95 dB at 1m and 104 dB at 1 m. The Sounder shall be equipped with flashing beacon tomeet the international standard for the Disables. The sounders shall becompatible to be connected on the same loop along with addressable sensorsand addressable manual call points.

Addressable Fire Alarm Interface Unit

All interface units shall be addressable and contain all necessary microprocessorselectronic components/ circuitry required to form an addressable device for directconnection to the loop circuits and operate in conjunction with the systemcircuitry/operational requirements.

It shall have the capacity to drive the required number of outlets to be controlled viarelays with 1 set of 240V AC/DC 6A rated volt free change over contacts, allprewired to terminals for accepting incoming cables by the sub-contractor.

The relay coil shall be controlled from the control panel via the loop circuits andinternal micro-processors/ electronic components/circuitry, the contacting beinggenerally utilized to transfer ventilation plants to a fire status under a fire alarmcondition.

The interface units shall be complete with power supply units i.e. integral battery andcharger, all housed within a surface mounted metallic enclosure.

The interfacing shall include but not limited to the following systems:Liquefied Petroleum Gas ( LPG ), Fire Fighting ( 2no. supervisory switches, 2no.pressure switches ), AHU’s , Lift , Public Address ( PA ) , Police Auto Dialer , etc.




E - 86

Addressable Fire Alarm Repeat Panel

The Contractor shall provide the fire alarm repeater panel in the Guard House tomeet the following specifications:

Fire alarm repeat panel shall be addressable pattern, containing all necessary micro-processors, electronic components and circuitry required to form an addressabledevice for direct connection to the loop circuits or main fire alarm panel and operatein conjunction with the system circuitry/operational requirements.

It shall give secondary indication and control of the main fire alarm control panel andrepeat system FIRE, FAULT and WARNING messages with indications and alsoduplicate essential system controls for emergency conditions.

The messages on the repeat panel shall be given by an alphanumeric 2 lines by 40characters liquid crystal display. Audible indications shall be by means of a 2 tone

buzzer for FIRE and FAULT, with silencing facility for the FAULT sound.

It shall have an identical display to that used on the control panel and include startsounders, stop sounders, reset controls and test engineering facilities. It shall haveintegral power supply and battery charger with 24 hour battery back-up.

Repeat panel shall be given a 32 character label from the main control panel for itslocation identification.

Local communication, interconnection of electronics disconnection from the looppower supply and standby supply shall be monitored.

Auto-dialling Facility

An auto-dialler facility shall be provided for dialling to the local Fire Brigade / CivilDefence Department in case of fire. The Contractor shall liaise with the departmentfor the same.

The auto-dialling facility shall be by dialling pre-programmed numbers from acartridge tape and then transmitting speech messages in Arabic and English. Thefacility shall be equipped with manual and automatic reset functions.

Description of Operation

The fire alarm panel shall have individually integrated loop circuits as shown on thedrawing, distributed to cover the various building levels of the whole development.The various areas of the building shall be identified as "FIRE ZONES" and generallyoperate in the following manner.




E - 87

Fire Alarm Condition

1. Alarm initiation

Should fire zone contact glass be broken or smoke/heat sensor operate, thefollowing functions where applicable shall operate:-

a. Energise the "FIRE" indicators and instigate the L.C.D. to denote addressidentification and label details, all forming part of the master fire alarmpanel.

b. Selected sounder zones to operate on a continuous/intermittent basis asrequired.

c. Energise the applicable relays, which in turn signal the ventilation plant toa fire status and shut the PACU.'s etc. Signal for shut down to bearranged in such away to trip only the zone (group of PACU ’s) of the

particular Air Conditioning Control Paneld. Retain the event within the master alarm panel memory for logging on the

onboard printer if and when required.

e. Auto-dial a pre-recorded message to the different locations i.e. FireBrigade, Director and Security Officer.

2. Silence Sounders

To silence the activated sounders the following procedure where applicableshall apply:-

a. Release key operated hinged access lid to control key board.

b. Press "Silence Alarm" control key, to de-activate an internal supervisorytone unit.

c. The functions listed above in no.1 (a), (b), (d) and (e) above shall remainactive after completion of this procedure.

3. System Reset

To reset the system after completing (2) above, the following procedure whereapplicable shall apply:-

a. Replace the broken contact glass or check the activate sensor as returnedto the normal status.

b. Press "Reset" control key, to automatically extinguish the "FIRE"indicators, remove the information from the L.C.D., all forming part of themaster alarm control panel, and extinguish the "FIRE ZONE"area/Register title L.E.D.'s forming part of the graphic mimic displaypanel.




E - 88

Fault Condition

1. Fault initiation

Should a monitored loop circuit be subject to a line break/ short/open circuit oran equipment item develops any fault/incur supply problems, the followingfunctions where applicable shall operate:-

a. Energise the "Fault" indicators and instigate the L.C.D. to denote incidentlocation/address and label details.

b. Energise the internal fault tone unit

2. Fault Reset

To reset the system after initiation of (1) above, the following procedure shall

apply.

a. Rectification of the fault shall automatically extinguish the "Fault"indicators, and automatically de-energise the internal fault tone unit.

Warning Condition

1. Warning initiation

Should a field device be changed/replaced for a dissimilar device (i.e. smoke

sensor replaced by heat), the following functions where applicable shalloperate:-

a. Energise the "Warning" indicators and instigate the L.C.D. to denote theincident location/address and label details.

b. Energise the internal fault tone unit.

2. Warning Reset

To reset the system after initiation of (1) above, the following procedure shallapply:-

a. Replace correct type of field device or if field device type change isdeliberate due to area functional requirements this situation can beaccepted via the function keys.

b. On completion of (a) above, the "Warning" indicators and internal faulttone unit shall automatically de-energise.

System Check Circuitry

This shall incorporate all the necessary requirements to provide a full comprehensiveerror checking and signal processing system, the operation of which being asdetailed for "Fault Condition" above.




E - 89

General

A manually operated control key shall be included, which if pressed shall signal allsounders to an "Evacuate" status. A key operated code system shall be provided

within the microcomputer to enable the user to select to retain or delete in anycombination the sounders, or interface unit relays operation during "Test" conditions.Once an alarm is initiated it shall continue until normal conditions are restored.

Submittals

Contractor to submit complete list of materials and equipment of Fire Alarm andDetection system for Engineer's approval including catalogues, illustrations, diagram,and any other relevant descriptive literature.

Maintenance Manual

The contractor shall provide six copies of a manual giving complete instructions forthe operation, inspection, testing and maintenance of the system including wiringdiagrams of units and main control panel. It shall also include the following:

1. Manufacturer's instructions for testing and frequency of cleaning for automaticsmoke detector heads.

2. Manufacturer's instructions for any control adjustment and maintenance ofbattery/charger units.

Maintenance and Service

Contractor shall provide call back service for 400 days following final acceptancedate of the fire alarm and detection works. Maintenance shall include the visit ofcontractor's competent personnel for necessary adjustments, cleaning andreplacement of parts.

Spare Parts

The contractor shall guarantee the supply of spare parts for at least ten (10) yearsfrom the end of the guarantee period. The contractor shall list the spare partsrequired for a period of two years, with prices and provide two complete sets of

special tools necessary for the routine maintenance and testing of the complete firealarm system.

Training

The contractor shall organise training courses on the maintenance of the fire alarmsystem for the personnel designated by the Employer.




E - 90

Wiring and Wiring Facilities

Supply and install the necessary conduit, cable tray, cables accessories and wiringfor the fire alarm system. The system shall operate on 2 wire lines for detection,

alarm and control functions. Wire size, termination and other details shall be as perFire Alarm System manufacturer's recommendations.

All wiring shall be installed to provide a complete and satisfactory functional systemin all respects. All cable terminations at components and junction boxes shall haveidentification tags, indicating polarity and function in a manner which is consistentthroughout the system.

The Alarm/Detection system wiring shall be completely independent from the othersystem wiring in all respects in accordance with the IEE Regulations. Joints in firealarm system wiring shall be avoided. Where joints calves are unavoidable the jointsshall be enclosed in a suitable junction box labelled 'Fire Alarm" and joints shall not

be such as to reduce the reliability and resistance to fire of the cable below that of un- jointed cable.

Testing and Commissioning

After the installation is complete, the Contractor shall conduct operating andcommissioning tests. The equipment shall be demonstrated to operate inaccordance with the requirements of this specification.

The system installation, testing and commissioning shall be as per Qatar CivilDefence approval and requirements. The fire alarm system shall be completely

programmed in accordance with Qatar Fire Department requirement and a specialistfrom the manufacturer shall demonstrate the complete system.

B.18 PORTABLE FIRE EXTINGUISHING SYSTEM

Portable Extinguishers

The Contractor shall supply and install portable fire extinguishers as shown on thedrawings. The fire extinguishers shall be manufactured from robust aluminiumcylinder or from high quality 1.4 mm gauge steel, inert gas welded and finished

externally in colour in accordance with the BBS EN 3.1 1996 as follows:

* CO2 fire extinguisher : Colour code - Red with black - 5 kg.

* Water fire extinguisher : -do- - Red - 9 litres

* Powder fire extinguisher : -do- - Red with blue - 6 kg.

The fire extinguishers shall be tested to the following:

* Working Pressure : 10 bar

* Test Pressure : 24 bar

* Temperature Range : - 20°C. to 60°C.




E - 92

Machine room : Not required. The traction machine and controlpanel must be installed within the upper end ofhoist way.

Cabin

a. Cabin walls and doors : Hairline finished stainless steel.

b. Cabin size : 1100 mm [W] x 1400 mm [D] x 2200 mm [H]

c. Cabin ceiling & lighting : Painted steel sheet ceiling with milky-whiteglobe lighting made of resin based plastic cover.

d. Ventilation : Electric blower

e. Car flooring : 2 mm recess to accept vinyl tiles. Vinyl tiles tomatch the Lobby tile finish.

f. Car Front Return Panel : Hairline finished stainless steel

g. Entrance Columns : Integrated with front return panel.h. Entrance sills : Extruded hard aluminium

Door safeties : Safety shoe - door protection system whichutilizes sensitive mechanical door edge,provided for the full height of the doors whichwill re-open the doors in the event ofobstruction.

Landing architraves : At both floors - lintel and wide jamb in hairlinefinished stainless steel.

Landing doors

a. Type : Centre opening automatic doors.

b. Size : 900 mm [W] x 2100 mm [H]

c. Finishes at both floors : Hairline finished stainless steel.

Landing entrance sills : Extruded hard aluminium

Indicator : a. Landing Indicators - Vertical combined unitcomprising digital LED dot display hallposition indicator, directional arrows andmicro stroke click type tactile call buttons ingrey plastic. Face plate in hairline finishedstainless steel with dark grey plastic case atall floors.

b. Car Operating Panel - Digital LED dotdisplay position indicator with smoke greyplastic display panel and micro stroke clicktype tactile call buttons in grey plastic whichwill illuminate on registration of a call. Faceplate in hairline finished stainless steel

Car operating panels to be provided on bothleft and right wall of the cabin.




E - 94

B.20 PUBLIC ADDRESS SYSTEM

The Contractor shall engage the services of a Specialist Contractor for designing thePublic Address system and submit the scheme for the approval of the Engineer. TheSpecialist Contractor shall be responsible for the satisfactory execution, installation,commissioning and performance of this system. The system shall be wiredindependently of other wiring systems using PVC rigid conduit / trunking of its own.

The tender drawing only shows the scheme and location of the loudspeakers andamplifier rack. The actual routes of conduits, wires, trunking etc., to the variousequipments shall be clearly shown by the Contractor on the working drawings.

The Contractor shall provide two independent systems for the Courtyard / Multi-

purpose Hall / Canteen and the Auditorium as shown on the tender drawings. Theequipment shall conform to the following specifications:

Courtyard / Multi-purpose Hall / Canteen

a. System Mixer/Pre-Amplifier with Zone Selection

This unit shall be a high performance call / BGM pre-amplifier and shallprovide a dual channel operation for calls and music simultaneously to amaximum of 6 zones.

Technical Data

Frequency response : 50 Hz - 20 KHz.

Distortion : < 0.5%

Priority mute : > 50 dB

Call station input : 8 pin DIN balanced

Input sensitivity : 1 V

Data : RS 485, 1200, N, 8, 1, 0

Mic / Line input : 3 pin XLR / 5 pin DIN

S/N Ratio : > 63 dB for mic and> 70 dB for music

CMRR : > 40 dB

Speech filter : -3 dB @ 315 Hz

Phantom power supply : 16 V

Master output : 3 Pin XLR

Override relay forVolume controls : Yes

b. Power Amplifier

The amplifiers shall be rated to cover the system demand as shown in thedrawings . Fully transistorized power amplifier modular type consisting of acentral housing incorporating a power amplifier and all the necessary




E - 95

interface circuitry for connection of other input and output modules shall beprovided. The master module in the main amplifier should have mains on/offindicator, an output level indicator and red LED as a peak overload indicator.

The audio output transformer should have three voltage tapping viz., 100V,70V and 50V wired to a 12 way Mate-N lock connector on the rear panel. Theconnector should have six outlet points for the output zone selector module.

Technical Data

Power supply : 240V AC, 50 Hz, 1 pH.

Rated power : Based on the scheme provided in the single linediagram

Input sensitivity : 0.5 mV

No. of inputs : 5 nos. + 1 aux.

Frequency response : 60 - 20,000 Hz ( ±3 dB)Tone control : Treble ±10 dB at 10 KHz

Bass ±10 dB at 100 HZ

Indicator : LED for power and output levels.

Distortion (at 1 KHz) : <1%

Signal to noise ratio : 80 dB

c. Microphones (in Courtyard and Multi-purpose Hall)

2 no. condenser type cardoid microphones, goose neck type, one with full

height adjustable stand and the other mounted on to a table stand.

Technical Data

Frequency range : 100 - 16000 Hz

Polar pattern : Cardiod for goose neck and omni-direction forothers.

Output impedance at1 KHz : 200/ 250 ohm (unbalanced)

The microphone shall override the cassette player or AM / FM tuner once

initiated. The unit shall be compatible with the amplifier and in case anymixing amplifiers are required, the same shall be provided.

Microphone Outlets

2 no. 3 pin DIN microphone outlets shall be provided complete with wiring,box and plastic white plates in Courtyard and Multi-purpose Halls.

d. Microphone (Telecom Room)

Microphone with 6 zone selection shall be located in the Telecom room and

be flexible goose neck stem mounted on to a table stand. The microphoneshall comply with the following specifications:




E - 97

Technical Data for 30 watts horn speakers

Power handling : 30 W (30, 15, 7.5, 3.75 W)

Sound Pressure Level : 112 dB (at 1m - 1 KHz)Rated voltage : 100 V

Frequency range : 125 - 20 KHz

i. AM / FM Tuner

The AM / FM tuner shall be self contained unit with AM wide band tuner withfrequency range of 522 - 1611 KHz and FM tuner with frequency range of87.5 - 108 MHz. The system shall be compatible with the amplifier.

j. Multi-CD Player

Contractor shall provide 1 No. compact disc player for a standard compactdisc. The CD player shall confirm to the following specification:-

Power Supply : 240 V AC, 50 Hz 1 Ph.

Power Consumption : 11 W

Frequency Response : 10 Hz - 20 KHz

Sampling Frequency : 44.1 KHz at normal pitch

k. Cassette Player

Contractor to provide 2 no. cassette players with track sequence switch andbuilt-in AGC circuit and balancing transformer, conforming to the followingspecifications:

Power supply : 240V AC, 50 Hz, 1 PH.

Consumption : 16 VA

Distortion : < 3% at 1 KHz

Frequency response : 100 - 8,000 Hz

Tape : Compact normal tapePlaying System : Auto reverse




E - 98

Auditorium

a. Mixer Power Amplifier

The mixer power amplifier shall be a high performance one with a wide choiceof input connectors like XLR, DIN and phono jack, with rated power coversthe connected load.

Technical Data

Frequency response : 50 Hz - 20 KHz.

Distortion : < 1%

Phantom power supply : 16 V

Microphone Inputs : 4 No.

Sensitivity : 200 mVImpedance : > 22 k ohm

Music input : Sensitivity 1 mV

S/N Ratio : > 60 dB

Loudspeaker output : 70 and 100 V

b. Microphones

2 no. condenser type cardoid microphones, goose neck type, one with fullheight adjustable stand and the other mounted on to a table stand.

Technical Data

Frequency range : 100 - 16000 Hz

Polar pattern : Cardiod for goose neck and omni-direction forothers.

Output impedance at1 KHz : 200 / 250 ohm (unbalanced)

The microphone shall override the cassette player or AM / FM tuner onceinitiated. The unit shall be compatible with the amplifier and in case anymixing amplifiers are required, the same shall be provided.

Microphone Outlets

2 no. 3 pin DIN microphone outlets shall be provided complete with wiring,box and plastic white plates in Courtyard and Multi-purpose Halls.

c. Column Speakers

These speakers are to be mounted on the walls of the Auditorium as indicatedon the tender drawings. The speakers shall conform to the following

specifications:




E - 99

Technical Data for 12 watts

Power handling : 12 W

Sound Pressure Level : 109 dB (at 1m - 12 W)

Rated voltage : 100 VFrequency range : 250 - 12500 Hz

d. AM / FM Tuner

The AM / FM tuner shall be self contained unit with AM wide band tuner withfrequency range of 522 - 1611 KHz and FM tuner with frequency range of87.5 - 108 MHz. The system shall be compatible with the amplifier.

e. Multi-CD Player

Contractor shall provide 1 No. compact disc player for a standard compactdisc. The CD player shall conform the following specification:-

Power Supply : 240 V AC, 50 Hz 1 Ph.

Power Consumption : 11 W

Frequency Response : 10 Hz - 20 KHz

Sampling Frequency : 44.1 KHz at normal pitch

f. Cassette Player

Contractor to provide 2 no. cassette players with track sequence switch andbuilt-in AGC circuit and balancing transformer, conforming to the followingspecifications :

Power supply : 240V AC, 50 Hz, 1 PH.

Consumption : 16 VA

Distortion : < 3% at 1 KHz

Frequency response : 100 - 8,000 Hz

Tape : Compact normal tape

Playing System : Auto reverse

Note: - For the above mentioned systems.

All equipments (sound sources, power amplifiers modules, power supplymodules…etc) shall be mounted and designed for 19 inch rack, which in return shallbe supplied with IP42, and with suitable fan for ventilation.




E - 100

B.22 AUTO CLASS CHANGE OVER SYSTEM

General

The system shall comprise, but not limited to :

a. Auto class change over panel

b. Bells (8 inch size)

c. Batteries

d. Battery charger

e. Wiring

The system shall operate on nominal 240 volt. 50Hz

All the system components shall be factory assembled and produced by the samemanufacturer who has at least ten (10) years experience in design, manufacturing,installation, commissioning and maintenance of auto class change over system in theState of Qatar.

Auto Class Change over Panel

The panel shall incorporate an automatic bell ring for a programmed session, classbreak, class start, class end etc. The panel shall be mounted at 1.25 metre from

ground level.

The panel shall provide a minimum of 20 possible settings automatic alarms per daywith a possible of 5 minute successive alarm programs and 7 days / weekprogrammes.

The panel shall be a digital type with LCD digital clock on the panel face, easyadjustment and programming type with a selectable manual - auto switch to allow forover riding the setting programmes and initiating the bells manually with a built-inpush button.Bells

The bells shall be electronic type, grey colour mounted on standard recessed conduit junction box, weather proof type, if used externally to IP 55 minimum and shallprovide a sound level not less 96 dB at one metre distance. The sound shall not besimilar to other alarm signals in the project.

Wiring

The wiring shall be via 1.5 mm2 PVC wires in 25 mm diameter PVC conduitsconcealed within the building fabric.

B.23 LIGHTNING PROTECTION SYSTEM




E - 102

B.24 EARTHING AND BONDING SYSTEM

Earthing

The Contractor shall provide for and adhere to Kahra-maa regulations very strictly asregards earthing and bonding systems are involved. However, the contexts of theseregulations are highlighted briefly as follows:

i. The M.V. panels connected from the transformers shall have an earth bar ofminimum cross-sectional area of 300sq.mm running the full length of thepanels. Removable neutral and earth links shall be provided in the M.V. panelswhich shall be of a minimum cross sectional area of 300sq.m. The earth bar inthe M.V. panels shall be connected to the earth provided by Kahra-maa or with

independent earth station specially provided for this.

ii. Where armoured cables are above ground, the armouring of the cable shall beused as the earthing conductor and in case of armoured cable in ground andback-filled, the armouring is not to be used as a sole means of earthing, butadditional means are provided by either of the following :

a. A separate single insulated PVC copper cable whose insulation colour shallbe green or green and yellow. The cable shall be run along with the maincable and tapped to it at regular intervals.

b. The inner lead or lead alloy sheath of armoured cable i.e. in case of

P.I.L.S.T.A. or PVC cable.

iii. The outer copper sheath of MICC cables may be used as the earth conductor.This cable shall not be buried in ground directly but in a non-metallic pipe.

iv. In case of wiring in conduits, a separate earth conductor of PVC copper ofappropriate size shall run.

v. For ring main circuits, the earth conductor shall also complete the ring.

vi. Where a means of earthing has not been provided by Kahra-maa, theconsumer's earthing terminal shall be connected by the earthing lead to an

effective earth electrode or electrodes, such as copper strip or rod, which shallbe buried in the ground at a position as near as practicable to the consumer'searthing terminal. Each electrode shall be driven to a depth such that itpenetrates the summer water table by a minimum of 2 metres. Everyconnection of an earthing lead to an earth electrode shall be made in a pitmeasuring 300 mm x 300 mm. The connection shall be either soldered orclamped. The pit shall be filled with sand and a removable cover placed oneach pit.

Bonding

i. Where metal work other than current carrying conductors is liable to becomecharged with electricity in such a manner as to create a danger, if the insulation




E - 103

of a conductor should become defective, or if a defect should occur in anyapparatus :

a. The metal work shall be earthed in such a manner as will ensure immediate

electrical discharge without danger OR

b. Other adequate precautions shall be taken to prevent danger.

ii. In a situation which may be normally wet or damp, where electrical apparatus ispresent and might give rise to danger and where there are substantial exposedmetal parts of other services (such as gas and water pipes, sinks and baths),the earth continuity conductor of the electrical installation shall be effectivelyconnected, electrically and mechanically to all such metal parts and to anyexposed metalwork of the electrical apparatus.

iii. A separate green/yellow PVC insulated copper bonding lead shall be taken

from the earthing terminal of the water heater and bonded to the metal pipework on both sides of the pump.

iv. Where water pumps are installed a bonding lead shall be taken from theearthing terminal of the local isolator and bonded to the metal pipe work on bothsides of the pump.

v. The size of bonding lead shall be the same as the earth continuity conductor ofthe circuit subject to a minimum size of 2.5 mm sq.

B.25 BUILDING MANAGEMENT SYSTEM

The Building Management System (BMS) is introduced in the mechanical drawings andspecification.

The contractor shall make the proper coordination between all available systems that areoffered for monitoring/control as per the schedule of input/output points.

The contractor shall ensure the compatibility of all parts of the system.

The system shall provide the following:

(a) ON/OFF status of the following systems:




E - 104

1- MV Panel.2- Fire Alarm Panel.3- Lift.4- Auto Class Change.

(b) Software integration for DigitalPower Metres:

The system software shall be capable to interface minimum ten parameters (different type ofreadings) between the BMS and the Digital Power metres.

The system shall be enhanced with bacnet/ip or bacnet-mstp or lonworks or Modbus protocol.To avoid any disabilities in the system configuration the power metres are preferred to besupplied by the BMS supplier.

B.26 TESTING AND COMMISSIONING

General

The Contractor shall fully test and commission the whole of the electrical installationin accordance with Kahra-maa /IEE regulations and also in accordance with thefollowing clauses.

The tests shall be recorded in detail and the results submitted to the Engineeraccording to the enclosed sheets. The Contractor shall then demonstrate that theinstallations are properly commissioned, that they operate in the correct manner and

are capable of functioning to accomplish the design intention as outlined herein.

Works Tests

All electrical LV switch gear, transformer and associated equipment shall be tested atthe manufacturers in the presence of the Electrical Engineer before despatch andduplicate test certificates shall be handed to the Engineer. All works test shall becarried out in accordance with the relevant British Standards and Codes of Practicecontained therein.

Site Tests

Site testing of all systems and components comprising the works shall be carried outin the presence and to the complete satisfaction of the Engineer after the Contractorhas first satisfied himself that the installation is functioning properly.

The Contractor shall provide all certified instruments, equipment, plant, labour andmaterials necessary for conducting specified site tests and shall be responsible forand prepared to demonstrate the accuracy of all the test instruments supplied by him.

The Contractor shall give the Engineer, notice in writing when any portion of theelectrical installation is complete. Should the Engineer or his representative notattend within 7 days of receipt of such written notice, the Contractor may proceedwith the tests; however duplicate certified copies of the results obtained shall beforwarded to the Engineer.




E - 105

All electrical installations, plant and equipment tests shall fully satisfy therequirements of the Kahra-maa, State of Qatar and those laid down in the IEEregulations as issued by the Institute of Electrical Engineers, 15th edition.

The Contractor shall be deemed to have included in his price for all safety devicesetc., as required by Kahra-maa. Once the Contractor has satisfied himself that theinstallation complies with Kahra-maa requirements, he shall arrange for Kahra-maato conduct their own tests prior to the handing over date. Observations shall bemade of the operation and performance of the installation and subsequentreadjustments shall be made as necessary.

Records of commissioning and testing shall be kept and when the Contractor hassatisfied himself that the installation is functioning correctly, the results shall becomprehensively reported in a bound copy to the Engineer.

Where it is not possible at the particular time of commissioning and/or demonstrationof the plant for full load conditions to be obtained or simulated, the Contractor shallrepeat the requisite operations of the commissioning and demonstration under suchfull load conditions (or the reasonable approximation of such condition acceptable tothe Engineer) at the earliest opportunity.

Statutory Authority Approval

Contractor shall submit the final official approval from Kahra-maa, Q-Tel and FireDepartment.

Maintenance and Servicing

The Contractor shall be held responsible and shall replace any defective part of alland every part of the works for the period of the guarantee from the date of theacceptance test carried out by the Engineer. The Contractor shall also be held liablefor any cost of dismantling or re-erection and making good of any works which mayhave to be undertaken in order to replace defective parts.

Electrical Tests

Following tests shall be carried out by the Contractor.

* All alarm, control and protective circuits shall be tested for correct operation.

* All lighting circuits shall be energised and checked to ensure that they are alloperational.

* All single pole switches shall be checked to ensure correct polarity and that thelive conductor has been connected. Neutrals must not pass through anyswitch.

* All motors, plant and any electrical equipment connected with mechanicalservices shall be checked to ensure that they run freely in the correct directionof rotation and that they run without undue noise or vibration.

Test of Continuity of Ring Final Circuit




E - 106

A test shall be made to verify the continuity of all conductors (including the earthcontinuity conductor) of every ring circuit and all readings shall be tabulated.

Continuity of Protective Conductors and Equipotential Bonding

A test shall be made before the connection of an electrical installation to the supply toverify that all protective conductors are connected correctly and electrically sound.

If the protective conductor forms part of a cable such as a core of a multicore PVC-insulated cable or a single protective conductor, a DC ohmmeter may be used tomeasure the resistance. Where steel conduit, trunking or other steel enclosures formthe protective conductor the test shall be carried out by use of a high current testinstrument at a voltage not exceeding 50 volts AC or DC and at a currentapproaching 1.5 times normal circuit current up to a maximum of 25A.

When using a DC test supply it must be noted that an inspection of the length of the

protective conductor must be made to ensure that there are no inductors fitted.

It is preferable to use a hand generator, or other portable instrument to carry out thetest so that the disconnected phase conductor can be connected to the consumer'searth terminal and the test can be made between phase conductor and protectiveconductor at each outlet.

Earthing Resistance Tests

Upon the installation of an earth electrode, a test shall be made to verify that theresistance of the electrode does not increase the earth fault impedance above the

required limit. Resistance to earth of all earthing rods, each earth terminationnetwork, continuity of conductors and efficiency of all bends and joints shall be testedby means of a Wenner test. In each case, the resistance to earth shall not exceed 1ohm.

Insulation Resistance Test

Insulation resistance tests shall be made before a completed installation or majoralteration to an existing installation is permanently connected to the supply. Forthese tests, large installations may be divided into groups. A D.C. voltage not lessthan twice the normal voltage of the supply (R.M.S. value of a A.C. supply) shall beapplied for the measurement of insulation resistance provided that for tests on lowvoltage circuits, the test voltage need not exceed 500V D.C.

When measured with all fuse links in place, all switches (including if practicable, themain switch) closed and except where earthed concentric wiring is installed theinsulation resistance for whole installation shall not be less than 1 mega ohm.

When measured between all the conductors connected to any one pole or phase ofthe supply and in turn all conductors connected to each other pole or phase of thesupply, the insulation resistance shall be not less than 1 mega ohm.

Wherever practicable, so that all parts of the wiring may be tested, all lamps shall beremoved and all current using apparatus shall be disconnected and all local switchescontrolling lamps or apparatus shall be closed; where the removal of lamps and/orthe disconnection of current using apparatus is impracticable, the local switches




E - 107

controlling such lamps and/or apparatus shall be open. This test is not applicable toearthed concentric wiring system.

Where apparatus is disconnected for the tests, the insulation resistance between the

case or framework and all live parts of each item of fixed apparatus shall bemeasured separately and shall comply with the requirements given in the appropriateBritish Standard for the apparatus. If there is no appropriate British Standard, theinsulation resistance shall be not less than 0.5 mega ohm.

Insulation of Site Built Assemblies

Protection against direct contact provided by insulation applied to live parts duringerection shall be tested to ensure that the insulation is able to withstand withoutbreakdown an applied test voltage equal to that specified in the British Standard forfactory built assemblies: BS 5486. BS 5486 requires the test voltage to be appliedbetween all live parts and the frame of assembly and between each pole and all other

poles connected to the frame of the assembly. If the assembly includes a protectiveconductor, the conductor should be regarded as a separate circuit. The test voltageshould be steadily raised to its full value over a few seconds. Main circuit test voltagedepends on the voltage rating of the applied insulation and ranges from 1000V to3500V AC. The test is considered to have been successful if there is no puncture orflash over.

When protection against indirect contact is provided by additional insulation installedduring erection it must be verified that the insulated enclosure gives a protection ofnot less than IP2X to BS 5490 and that the insulating enclosure should be able towithstand without breakdown or flashover an applied voltage test equal to thatspecified in the British Standard BS 5486 "Factory Built assemblies of switch gear

and control gear for voltages up to and including 1000V AC and 1200V DC. Forenclosures made of insulating material, BS 5486 requires an additional dielectric testto be carried out by applying a test voltage of between 1500V to 5200V. The test isbetween metal foil laid on the outside of the enclosure over opening and joints andthe interconnected line and exposed conductive parts within the enclosure locatednext to the opening and joints.

Verification of dielectric properties is not required by BS 5486 for those parts whichhave already been type tested provided their dielectric strength has not beenimpaired by their mountings.

Protection by Electrical Separation

When source of supply in double wound transformer according to BS 3535 or a motorgenerator set with same degree of protection or mobile source with double orreinforced insulation this method of protection is to be used. Only one circuit shouldbe supplied and under no circumstances should that circuit be earthed.

No connections between a live part of separated circuit and any part of another circuitshall be permitted. In case of a possible mechanical damage, flexible cord should bevisible over its full length.

Protection by electrical separation shall be used for BS 3052 shaver sockets.

Protection by Barrier or Enclosures during Erection




E - 108

A test shall be conducted according to IEE regulations to ensure protection by barrieror enclosures during erection.

Verification of Polarity & Phase Rotation

A verification of polarity shall be made to ensure that all fuses and single pole controldevices are connected in the phase conductor only. The centre contact of Edisontype screw lamp holders is connected to the phase conductor and outer metalthreaded part is connected to neutral conductor.

Wiring to plugs and socket outlets should be such that they are connected with phaseconductor on right when inspected from front. A proprietary type of polarity testingdevice shall be used for the tests.

The complete installation shall be tested to ensure that all main switch gear is

connected to give the correct phase rotation.

Earth Fault Loop Impedance Test

The Contractor or others responsible for the work shall test the effectiveness of theearthing of each completed installation by means of an earth fault loop impedancetest. This test shall be carried out by using earth fault loop impedance testinstrument.

Operation of Residual Current Operated and Fault Voltage Operated Protective

Devices

A test shall be conducted to check for instantaneous operation of above devices byexternal means.

The testing device shall be a single phase double wound mains transformer with anoutput voltage not exceeding 50 volts (rms) AC, having a short period rating of 750VA (minimum): and shall be connected across the circuit line conductor and circuitprotective conductor of an residual current operated device, or the neutral & frameterminals of a fault voltage operated device.

In the case of former, the device should trip within the time delay declared by themanufacturer and in the case of latter, should trip instantaneously.

On completion of sections of the work, the Contractor shall test the electricalinstallation in accordance with current IEE regulations and wiring regulations ofKahra-maa, State of Qatar, in the presence of the Engineer. Duplicate copies of thefinal test results and of the certificates described in the current IEE regulations shallbe submitted for approval to the Engineer. The Contractor shall provide instrumentsfor all tests.

General Commissioning

The Contractor shall:-

a. Set all units and apparatus to work.




E - 109

b. Adjust and set up all automatic controls, regulating devices, measure andadjust any plant under his responsibility, duties and ratings and performance ofall components for all items installed separately and integrated into theinstallation as a whole.

c. Record in detail each step and stage of commissioning and test results,reporting the test stages until the tests are satisfactory.

d. The Contractor shall carry out insulation, continuity, earth loop impedance,switching and sequencing, direction of rotation and all other tests requiredunder the IEE regulations, 15th edition.

e. Should the tests carried out fail to demonstrate that the plant and equipment iscorrectly installed and/or functioning correctly, the Engineer shall decidewhether such failure is due to negligence upon the Contractor's part (includingin this context as defined all his Subcontractors and suppliers) in which case,the Contractor shall carry out all remedial works entirely at his own expense.

f. After remedial works have been completed the Contractor shall again report tothe Engineer for further tests to be carried out. The Engineer's decision as towhat constitutes a satisfactory result shall be final.

Commissioning & Testing of Distribution System

The completed installation or parts thereof shall be subjected to acceptance tests asinstructed by Kahra-maa or the Engineers before being connected to the supply.

The following tests shall be included as applicable:

i. Tests as prescribed in the Kahra-maa regulation.

ii. Tests in accordance with British Standards and Codes of Practice containedtherein.

iii. Insulation resistance

iv. Earth continuity

v. Continuity resistance of conductors and sheathing of each section and thewhole installation.

vi. Full load tests as required by the Engineer

vii. Current injection tests of all over-current devices and residual current operated

circuit breakers etc.

These tests shall be carried out in the presence of the Engineer. The Contractorshall give 7 days written notice of any intention to carry out any of the tests.

B.27 WARRANTY AND GUARANTEE

The Contractor shall guarantee for a period of 400 days after the practical completionof the installation that all plant and equipment shall operate free of any defects due todefective material and bad workmanship and that any part found defective during this

period shall be replaced free of cost by the Contractor.




E - 110

Maintenance period for all electrical equipment, panels, controls, fittings, wiringaccessories, cables and systems etc., shall start only after regular electricity powersupply is available at site.

If the defects are not rectified within a reasonable period, the Client may proceed todo so by another agency at the Contractor's entire risk and expense without prejudiceto any rights of the Client.

The Contractor shall also provide guarantee for the items detailed hereunder for thetime period stated, following the date of Practical completion:

i. Lifts : 3 years

ii. Fire Alarm System : 3 years

iii. Auto-class Change over System : 3 years

iv. Intercom System : 3 years

v. Emergency Pack : 3 years

vi. Public address system : 3 years

The supplier / Contractor shall provide annual report for the above items stating thecondition of the equipment.

B.28 SPARES FOR ELECTRICAL ITEMS

The Contractor shall include manufacturer's spares for 2 years running, further to theWarranty period, in addition to the spare parts mentioned in the QCS. These shall beprovided in this contract. Prior to order, the Contractor shall prepare in triplicate asubmittal listing all spares for each item/equipment, clearly detailing manufacturer'sname, address telephone and telex numbers and spare part reference number,together with component cost. The submittal shall be passed to the Engineer forapproval and only upon receipt of approval in writing from the Engineer may the finalorder be placed.

Contractor shall ensure that the manufacturers provide a warranty for providing

spares up to a period of 10 years for all the equipment supplied on this project.

The recommendation of 2 years (spare) shall be provided by the respective approvedmanufacturer through the authorised local agent and to be delivered to central stores.

The spares shall include but not limited to the following systems:

1. Transformers2. M.V. Panels3. Sub main Boards & Distribution Boards4. Lifts5. Farash Call Bell

6. Dimming System7. Fire Alarm System8. Auto Class Change over System




E - 111

9. Intercom System10. Emergency Pack11. Public Address System12. Lighting Fittings

13. Wiring Accessories14. Isolators15. Lightning Protection16. Building Management System

B.29 SCHEDULE OF LIGHT FIXTURES

Type Description

CP 2X28W T5 lamp weather proof fixture to IP66. The body made of anodisedextruded aluminium with VO-UL94 techno polymer ends, high purityaluminium reflector anodised & polished, toughened safety glass hinged tothe body with silicone anti-ageing gasket complete with stainless steelaccessories for external fixing, The fitting to be high frequency electronicballast type 240V/50HZ,

RC Can be universally used in cut-out recess openings and in system ceilingswith concealed or exposed grids (trunking15mm/24mm) for module size600mmx600mm ( or according to ceiling at site)4x14W T5 Socket G5Optical System / Reflector

Parabolic Louvre RPV of 99.98% high purity aluminium, highly specularanodized aluminium in full size 600m x 600mm of luminaire.Suitable for VDU work stations according to EN12464 via reducedLuminaire L<200cd/m2For beam angle above 65º all around. Louvre mounting and self-actuatingelectrical earthingVia sliding contact catches. Louvre can be hinged downwards and unhookedon both sides without tools.luminaire BodySheet steel, white powder coated (80-120microns).material thickness0.50mm,Increased stability via additional grooves with luminaire top.

Low 83mm construction height enables hooking square luminaries intoexposed grids even with low cavity ceiling from 200mm.Electronic control gear(ENEC approved ,CELMA ClassA2)Wiring ready for Connection with terminal block with integrated fuse, 3-pole,2.5mm

2

LOR (efficiency factor) = 0.75Hot wire test 960ºCSafety Class I (EN 61140)luminaire Approvals: CE, ENEC Manufactured and tested according to EN60598

RC/E As above use 2x14 w lamps for emergency purpose .30% output requiredon mains failure per tube.Emergency power packs to consist of Battery/Invertor unit using Nickel-Cadmium Batteries with 3 hour Autonomy.




E - 112

RB Round Recessed Down light 1 x 26W TCT Socket GX24q-3 OpticalsystemEnergy-efficient HR reflector, highly specular, with reflection-intensifyingcoated, silver surface, reflectance value > 98%, can be mounted withouttools. Luminaire body: Sheet steel, galvanised, with circular die-cast bezelring, white powder coated (80-120mivrons). Shadow gap between bezelring and reflector rim for accommodation of covers. Tool-free ceilinginstallation via rapid-mounting springs.Electrical connectionControl gear in separate housing, with connection terminal to 2.5 mm² andcable strain relief system. Housing and lamp holder of heat-resistantplastic, interconnected via 370 mm long connection cable.Multi-Lamp electronic control gear for 26W lamps (ENEC Approved,CELMA class A2)wiring ready for connection with terminal block with integrated fuse, 3-pole,2.5mm

2

LOR (efficiency factor) = 0,92

Hot wire test 850 ° CSafety class I (EN 61140)Luminaire approvals: CE, ENECManufactured and tested according to EN 60598

RB/E As above use 1x26W lamp for emergency purpose .22% output requiredon mains failure per tube.Emergency power packs to consist of Battery/Invertor unit using Nickel-Cadmium Batteries with 3 hour Autonomy.

RC-D Ditto as “RC” but with dimmable frequency gear (HF-dimming)

RG

RG/E

As RB but with 2xPL-C 2pin/G24d -3/26w and HFD (dimmable ballast),

As above use 1x26W lamp for emergency purpose .22% output requiredon mains failure per tube.Emergency power packs to consist of Battery/Invertor unit using Nickel-Cadmium Batteries with 3 hour Autonomy.

RH Battan luminaire, pendant, wall or surface mounted, HF of proprietarybrand, 1 x T5, 28 W, terminal block with integrated fuse, 3-pole, max. 2,5

2,

single length, housing made of sheet steel, white finish, protectioncategory: IP20, protection class: class1, and with standard dimensions.

RI Ditto as “RC” but with:

Prismatic optical SystemPMMA cover, in white –coated (80-120microns) aluminium frame. Withphotometrical designed prismsTo direct light primarily onto the working plane. Protection rating IP54 onroom side.

RI/E As above use 2x14 w lamps for emergency purpose .30% output requiredon mains failure per tube.Emergency power packs to consist of Battery/Invertor unit using Nickel-Cadmium Batteries with 3 hour Autonomy.

RJ Batten luminaire, pendant, wall or surface mounted, HF of proprietary

brand, 1 x 14W T5, terminal block with integrated fuse, 3-pole, max. 2,5

2

,single length, housing made of sheet steel, white finish, protectioncategory: IP20, protection class: class1, and with standard dimensions.




E - 113

SB Down light surface mounted, with high specular reflector, AL99, 98%,extreme wide light distribution, HFG- Professional of proprietary brand, 2 xTC-DEL 26W, terminal block with integrated fuse, 3-pole, max. 2,5

2,

housing made of sheet steel, white finish, protection category: withaccessory IP54, protection class:class1. Ceiling spacer adapter made ofsteel, height = max. 40

SB/E As above use 1x26W lamp for emergency purpose .22% output requiredon mains failure per tube.Emergency power packs to consist of Battery/Invertor unit using Nickel-Cadmium Batteries with 3 hour Autonomy.

SC Weather-proof surface-mounted luminaire made of polycarbonate, for T5fluorescent lamps IP 66, 1 x 35W T5 Socket G5Optical systemClear polycarbonate diffuser with finely structured front ends, impact-resistant, UV stabilised, smooth outer, inner longitudinal prisms. Diffuser

manufactured from one piece, mechanically robust. Secure fixing ofdiffuser with tool-free clip-in quick-release catches.Luminaire bodyPolycarbonate, recyclable, flame-resistant, light grey, with push-outs onceiling side and front ends for mains cable rounding and through-wiring viaheat-resistant inner wiring. Ceiling mounting with stainless steel fixingclamps. With wire clamp of stainless steel, Degree of protection IP 66.Multi-Lamp electronic control gear for 35W lamp (ENEC Approved, CELMAclass A2)wiring ready for connection with terminal block with integrated fuse, 3-pole,2.5mm

2

LOR (efficiency factor) = 0,98

Hot wire test 850 ° CSafety class I (EN 61140) Approval Luminaire: CE, ENEC: class1,Dimension: (LxWxH) 1277x84x102mm. Manufactured and tested according to EN 60598.

SC/E As above use 1x35 w lamp for emergency purpose .27% output requiredon mains failure per tube.Emergency power packs to consist of Battery/Invertor unit using Nickel-Cadmium Batteries with 3 hour Autonomy.

SD LED Hi-Bay downlight – the luminaire shall be suitable to be fixed atroof heights in multipurpose halls (indoor). Total wattage 120Wmaximum (included driver) and more than 12,500lm (out of theglass), at 50°C and 4000K color temperature, 240V AC main voltageand 50Hz. Frame, cover and heat sink to be in die cast Aluminumwith full IP65 protection. Suitable for recessed installation.

Optical UnitRemovable optical unit in 99.85% purity aluminium, class A+according to EN 16268, flat tempered glass of minimum 4mmthickness.

LifetimeLuminaire Lifetime B20L80 (including critical failure) at 50° C>50,000hrs. TM-21 lifetime values shall not be accepted.

Also comply with standards CE & Certification to UL or ENEC mustbe provided for the luminaires equal to the one proposed, testing andcompliance to




E - 114

EN60598-1 (Electrical Safety – General)

EN 60598-2-5 (Electrical Safety – Flood Lighting)

EN 60598-2-3 (Electrical Safety – Road Lighting)

EN -62471:2009-2 (EXEMPT GROUP – Photo biological

safety) and the test report by third party laboratory shall besubmitted (self-declaration will not be accepted)

EN 62493:2010 (Human exposure to electromagnetic fields)and the test report by third party laboratory shall be submitted(self-declaration will not be accepted)

EN 55015 (Emission Requirement - EMC)

EN 61547 (Immunity Requirement –EMC)

EN 61000-3-2 (Harmonic Requirement –EMC)

EN 61000-3-3 (Flicker Requirement – EMC)

SH Ditto as “SC” but 2x35W

SH/E As above use 1x35 w lamp for emergency purpose .27% output requiredon mains failure per tube.Emergency power packs to consist of Battery/Invertor unit using Nickel-Cadmium Batteries with 3 hour Autonomy.

SJ Diffuser luminaire surface or pendant mounted, with injection-mouldedprismatic diffuser made of PMMA, with ceiling illumination and direct light-distribution, HFG-Professional of proprietary brand, 2 x 28W T5, terminalblock with integrated fuse, 3-pole, max. 2,5

2, housing made of powder

coated sheet steel, white finish, protection category: IP50, protection class:class1,with standard dimensions.

SJ/E As above use 1x28W lamp for emergency purpose 21% output required on

mains failure per tube.Emergency power packs to consist of Battery/Invertor unit using Nickel-Cadmium Batteries with 3 hour Autonomy.

SK Recessed track lighting system complete with all mounting and electricalaccessories suitable for 3 Nos. of 100 W Tungsten Halogen lamp completewith directional baffles – white colour, as model: 3Nos. mode 20 track300112+017234+017210+017208,

SM Same as “SH”

SM/E As above but with factory fitted integral NiCd Emergency Kit suitable for

3Hrs Operation and having BLF mentioned elsewhere in the specification,

SR

SR/E

Downlight surface mounted, with high specular reflector, AL99, 98%,extreme wide light distribution, HFG- Professional of proprietary brand, 2 xTC-DEL 26W, terminal block with integrated fuse, 3-pole, max. 2,5

2,

housing made of sheet steel, white finish, protection category withaccessory IP54, protection class:class1. Ceiling spacer adapter made ofsteel, height = max. 40.

As above use 1x26W lamp for emergency purpose .22% output requiredon mains failure per tube.Emergency power packs to consist of Battery/Invertor unit using Nickel-Cadmium Batteries with 3 hour Autonomy.

SQ Downlight surface mounted, with high specular reflector, AL99, 98%,extreme wide light distribution, HF- Dimming of proprietary brand, 2 x TC-




E - 115

TEL /32 W, terminal block with integrated fuse, 3-pole, max. 2,5 , housingmade of powder coated sheet steel, white finish, protection category: IP65,protection class:class1,

WA Recessed mounted luminaire with wall washer reflector RAX 1x28W T5socket G5.Optical systemWall washer reflector RAX, asymmetrical distribution, aluminium,reflectivity-enhanced coating, for uniform illumination of vertical surfaces.Luminaire body sheet steel, white powder-coated (80-120microns),material thickness 0.75mm.visible construction height 24mm, total height42mm. with all round uncut rim on underside, width 50mm, and flushmounted, integrated flat end caps. multi lamp electronic control gear for28W or 54W lamps (ENEC approved, CELMA classA2).Wiring ready for connection with terminal block with integrated fuse, 3-pole,2.5mm

2

LOR (efficiency factor) = 0.83

Hot wire test 850 ºCSafety class I (EN 61140)Luminaire approved: CE, ENEC Manufactured and tested according to EN60598

WC

WD

WD/E

Damp proof luminaire with injection-moulded prismatic diffuser made ofPMMA, direct wide-beam light-distribution, HFG-Professional of proprietarybrand, 1 x T5, 14 W, terminal block with integrated fuse, max. 2,5

2, housing

made of high quality glass-fibre reinforced polyester, grey finish, diffuserlocks made of stainless steel, protection category: IP65, protection class:class1, and with standard dimensions.

2x35W T5, Surface mounted weatherproof luminaire made of transparentPC body with clear polycarbonate diffuser, Electronic Ballast IP66.

As above use 1x35 w lamps for emergency purpose. 27% output requiredon mains failure per tube.Emergency power packs to consist of Battery/Invertor unit using Nickel-Cadmium Batteries with 3 hour Autonomy

WF Compact floodlight with safety glass and bracket, flat, asymmetric lightdistribution, up to 1 x HIT –DE-DE 150 W, complete with integratedelectrical components, ignitor with automatic power disconnection andballast with thermal protection, power factor corrected, housing made of diecast aluminium, iron mica finish (DB702S), protection category: IP66,protection class: class1, certification symbol: VDE, ENEC10, impactresistant (VDE 0710), dimension: (LxWxH) 355x276x95 mm,

WG Bulkhead luminaire 2x26W CFL lamp wall mounted with die-castaluminium body, aluminium reflector and pressed glass diffuser and thesemi grill & protection category IP65,

WN 44W LED floodlight with 21 modules LED white cold 6000K with widebeam 21 degree distribution; high corrosion resistant die cast aluminiumhousing, (copper free), 99.98% pure aluminium reflectors, clear toughenedglass 8mm thick, and stainless steel screws. Double cable entries withPG16 cable glands in nickeled brass, silicon gasket polyester powder paint

with high resistance against UV rays and harsh weather conditions,luminaires luminous flux: 3023lm, class II, IP66




E - 116

XA LED Streetlight – the luminaire shall be suitable to be fixed on 8mheight pole with short bracket or at his top. Total wattage 80Wmaximum (included driver) and more than 8240lm out of the glass, at25°C and 4000K color temperature (79W and 7750lumen out of theglass at 50°C), 240V AC main voltage and 50Hz.Frame, cover andheat sink to be in Die-cast Aluminum and with full IP66 protection. Asymmetrical optics for wide street and wet asphalt suitable for Roadapplication.

Optical UnitRemovable optical unit in 99.85% purity aluminium, class A+according to EN 16268, flat tempered glass of minimum 4mmthickness.

LifetimeLuminaire Lifetime B20L80 (including critical failure) at 50° C>50,000hrs. TM-21 lifetime values shall not be accepted.




EN -62471:2009-2 (EXEMPT GROUP – Photo biologicalsafety) and the test report by third party laboratory shall besubmitted (self-declaration will not be accepted)

EN 62493:2010 (Human exposure to electromagnetic fields)and the test report by third party laboratory shall be submitted

(self-declaration will not be accepted) EN 55015 (Emission Requirement - EMC)



EN 61000-3-3 (Flicker Requirement – EMC) A test report for EMI / EMC compliance shall be provided.

Pole Details: - [ Made in KSA]8 mtrs Hot Dipped Galvanized octagonal pole, with cutout and access door (Approved by ASHGAL)

XB Same as “XA” but two arms 2(1x80Watts LED)

XC LED floodlight suitable to wall-fixed on a height from 8mtr upto 12mtrmaximum. Housing in Aluminum, total wattage 73W maximum (includeddriver) and more than 6.670lm (out of the glass), at 50°C and 4000K colortemperature, 240V AC main voltage and 50Hz. Housing in die cast Aluminum and Frame / Heat sink in Extruded Aluminium, with Ingressprotection of IP66.

Optical UnitHigh efficiency metalized polycarbonate optics, flat tempered glass ofminium 4mm thickness. Asymmetrical optics for street andpedestrian applications.

LifetimeLuminaire Lifetime B20L80 (including critical failure) at 50° C




E - 117

>50,000hrs. TM-21 lifetime values shall not be accepted.




EN -62471:2009-2 (EXEMPT GROUP – Photo biologicalsafety) and the test report by third party laboratory shall besubmitted (self-declaration will not be accepted)

EN 62493:2010 (Human exposure to electromagnetic fields)and the test report by third party laboratory shall be submitted(self-declaration will not be accepted)

EN 55015 (Emission Requirement - EMC)



EN 61000-3-3 (Flicker Requirement – EMC) A test report for EMI / EMC compliance shall be provided.

XD 3 x Floodlight with safety glass and bracket, flat, asymmetric diffuse light-distribution, 1 x HIT-DE 400W, complete with integrated electricalcomponents, ignitor with automatic power disconnection and ballast withthermal protection, power factor corrected, housing made of die castaluminium, iron mica finish (DB702S), protection category: IP66, protectionclass: class 1, impact resistant (VDE 0710), dimension: (LxWxH)565x465x155 mm . Mounted on 8M HDG pole with suitable sized crossarm & complete with all foundation, mounting and electrical accessories,

XF 2 x Floodlight with bracket for mounting on multiple flood light mast-top, flat

safety glass, asymmetric diffuse light-distribution, 1 x HIT-DE 1000W,housing made of die cast aluminium, sand blasted with built on ignotorprotection category: IP65, protection class: class 1, impact resistant (VDE0710),Individual control gear required, dimension: (LxWxH) 790x630x230mm, 2 x control gear unit, 1 x HIT 1000 W, power factor corrected, 240 V,protection category = IP65 & p41rotection class: class 1,Mounted on 13M HDG pole with suitable sized cross arm & complete withall foundation, mounting and electrical accessories.

XH 4 x Floodlight with bracket for mounting on multiple flood light mast-top, flatsafety glass, asymmetric diffuse light-distribution, 1 x HIT-DE 1000W,housing made of die cast aluminium, sand blasted with built on ignitor

protection category: IP65, protection class: class 1, impact resistant (VDE0710), individual control gears required & dimension: (LxWxH)790x630x230 mm, 4 x control gear unit, 1 x HIT 1000 W, power factorcorrected, 240 V, protection category = IP65 & protection class: class 1,Mounted on 13M HDG pole with suitable sized cross arm & complete withall foundation, mounting and electrical accessories.

XJ Compact floodlight for sign board illumination with safety glass andbracket, flat, asymmetric light distribution, up to 1 x HIT-DE-DE 150 W,complete with integrated electrical components, ignitor with automaticpower disconnection and ballast with thermal protection, power factorcorrected, housing made of die cast aluminium, iron mica finish (DB702S),

protection category: IP66, protection class: class1, certification symbol:VDE, ENEC10, impact resistant (VDE 0710), dimension: (LxWxH)355x276x95 mm.Customised arm for suitable mounting and positioning of the floodlight for




E - 118

the desired application.

EXIT 2x8W fluorescent Emergency maintained / sustained luminaire with ‘EXIT’sign in English and Arabic single side or double side to suite the location,

XX 2x35W, T5 LF4 Fluorescent Lamps, Wall mounted emergency light unit,extruded aluminium robust and corrosion resistant enclosure withtoughened safety glass is finished in a light grey epoxy coating, batteriesare maintenance free.(this unit is to be of the non-maintained type usingnickel cadmium batteries with 3hour battery automy).

/E luminaires with integral emergency kit with BLF mentioned elsewhere inthe specifications, However, not less than as mentioned below : 18 W T8 – 24%, 36 W T8 – 9%, 58 W T8 – 10%, 14W T5 – 30%, 28W T5 – 21%,35W T5 – 27%, 26W TC-TE – 22%, 26W TC-DE – 16%.

EX 2x36Watts surface mounted explosion proof fluorescent fitting.

Notes :

1. For light fitting Type XA, XB, XD, XF AND XH foundation details shall be asrecommended by the approved lighting manufacturer.

2. For approval of materials equivalent to the specified one, the Engineer'sdecision shall be final and binding.

3. Wire guard for Type ‘SF’ shall be provided for multi -purpose high bay fittingsonly.

B.30 SCHEDULE OF SUGGESTED MANUFACTURERS OF EQUIPMENT

Notes:

1. For approval of materials equivalent to the specified, the Engineer’s decision shall be final and binding.

2. The below recommended manufacturers should meet the detailedspecifications given in the relevant section.

3. The name of the Manufacturer, model no and the country where theproduct is manufactured should be clearly and permanently marked(sticker is not acceptable) on the product itself.

4. All materials/equipment related to fire such as pumps. Pipes, fittings,valves, etc… should be UL, FM, LPCB or others and approved byCivil Defence. Any proposal not complying with the aforesaid shall

not be accepted.

5. Written guarantees for Materials & Equipment from suppliers, sub-




E - 119

contractors, manufacturers or others engaged in the works wheresuch guarantees are stipulated in the Contract should be providedduring the approval stage as a prerequisite for the final approval ofthe Engineer. The Contractor shall not be entitled to any claims or

whatsoever for any delays in the approvals due to this regard.

6. Cut-outs of lighting poles shall be equipped with MCB and not fuse.

1. Transformers : FEDERAL TRANSFORMER (UAE)

EMIRATES TRANSFORMER &SWITCHGEAR (UAE)SAUDI TRANSFORMERCOMPANY (SAUDI ARABIA)

ABB (SWEDEN), ALSTOM (UK)

OR EQUAL & APPROVED

2. LV Switch boards 1- ABB (ITALY) / ARTUK SYSTEM,QATAR SWITCHGEAR.

2- SCHNEIDER (FRANCE OR UK)/ BLOCKSET SYSTEM,BIN GHALIB ENG.

3- GE/SEN PLUS OR AL FARRAJ SYSTEM, AL FARRAJ TRADING &MANUFACTURING Co.

4- GE/ETA STAR SYSTEM,

GULF SWITCHGEAR (QATAR).5- ABB (ITALY) / ARTUK SYSTEM,BARAKAT ENGINEERINGOR EQUAL & APPROVED

Capacitor Bank SCHNEIDER ELECTRIC,

ALPES TCHNOLOGIES(FRANCE),

ABB(SWEDEN),

EATON(UK),

OR EQUAL & APPROVED

3. MCB Distribution Boards and Sub-

main boards

: MEM SHIELD (UK),

HAGER(FRANCE), ABB(ITALY), BILL(UK),

SCHNEIDER (FRANCE OR UK)

DORMAN SMITH(UK), AL FARRAJ TRADING &MANUFACTURING Co.OR EQUAL & APPROVED

4. Earth Leakage Circuit Breaker : HAGER(FRANCE), ABB(ITALY),DORMAN SMITH(UK),MERLIN GERIN(FRANCE),

SQUARE D(UK), BILL (UK),

MEM SHEILD (UK), AL FARRAJ TRADING &MANUFACTURING Co.OR EQUAL & APPROVED




E - 120

5. Fuse Switch, Switch fuses and : SOCOMEC (FRANCE),

Isolators MEM (UK), STROMBERG,

BILL (UK), SQUARE D (UK),

ABB (FINLAND),

KATKO (FINLAND),

OR EQUAL & APPROVED

6. Cables and Accessories : DOHA CABLES(QATAR),QICC(QATAR),RIYADH CABLES(KSA),BICC - DUCAB(UAE),

OMAN CABLES(OMAN),

PIRELLI (UK),

GULF CABLES (KUWAIT),JEDDAH CABLES (KSA)OR EQUAL & APPROVED

7. Cable Tray : WIREMOLD, LEGRAND,

PHILIPS GRAHAME,

ERICO, UNITECH (KSA)

UNI TRUNK (U.K)ICMS(QATAR)OR EQUAL & APPROVED

8. PVC Conduits and Fittings : QATAR MANUFACTURING CO.,QATAR NATIONAL PLASTICFACTORYMK, DECODUCT (UAE)

SAUDI EGA, HOTACE(OMAN)COMAT (UAE)

OR EQUAL & APPROVED

9. G.I. Conduits, Cable Trunking : BARTON, BURNS,

and Fittings WALLSALL, ICMS(QATAR)

MITSUBISHI, ERICO

OR EQUAL & APPROVED

10. Fire Detection and Alarm Systems : AUTRONICA (NORWAY),

GENT (UK), NOTIFIER (USA),

SIMPLEX (USA),

PHOTAIN CONTROLS (UK),EDWARDS(CANADA),

OR EQUAL & APPROVED

11. Emergency Pack for Lighting : VENTILUX, BARDIC,

MANVIER, ORBIC

JSB, THORNTEKNOWAREOR EQUAL & APPROVED

12. Public Address System : MILLBANK (UK),

PANASONIC (Japan), ATEIS (FRANCE)BOSE (USA)




E - 121

BOUYER (France),WHITELEY ELECTRONICS (UK),

OR EQUAL & APPROVED

13. Presence Detectors : SCHNEIDER ABBMKOR EQUAL & APPROVED

14. DIMMING SYSTEM QUANTRAN (UK), EATON (UK),

SCHNEIDER (FRANCE),

LEGRAND (UK),OR EQUAL & APPROVED

15. Lighting Fixtures : HOFFMEISTER (Germany),RZB (Germany), REGGIANI (Italy)

DISANO (Italy), REGIOLUX (UK),

SITECO (Germany)

MARLIN (UK),TRILUX (Germany),,

THORLUX (UK), THORN (UK),

AEC, (Italy). FITZGERALD,UK

IGUZZINI (Italy), CROMPTON (UK),

ABACUS(UK), SBP/PRISMA (Italy).ZUMTOBEL (Austria).SIMES (Italy)PHILIPS (FRANCE)

WHITECROFT, UKRUUD LIGHTING, USAOR EQUAL & APPROVED

16. EXIT Sign : VENTILUX, BARDIC,

MENVIER, Thorn

JSB,

OR EQUAL & APPROVED

17. Intercom System : ELVOX (Japan),AIPHONE(JAPAN),JERRON (USA),

RING MASTER (Norway),COMELIT (Italy),

OR EQUAL & APPROVED

18. Fire Extinguisher : SAFICO,

NAFFCO, COMBAT,

BRISTOL,

CHUBB,

OR EQUAL & APPROVED

19. Fire Resistant Cables : FP 200 (UK)

FIRETUF (DRAKA) UKTEKAB (UAE)B3 (UK)OR EQUAL & APPROVED




E - 122

20. Lifts : MITSUBISHI (JAPAN),

HITACHI (JAPAN),

FUJITEC( JAPAN),

OR EQUAL & APPROVED

21. Hand and Hair Driers : SEIMENS(GERMANY),

INTERCARE,

WANDSWORTH,

MEDICLINICS,

RED RING (UK),

XPELAIR (UK),

OR EQUAL & APPROVED

22. Wiring Accessories : MK (UK),

WANDSWORTH,

HAMILTON (UK),CONTACTUM (UK),OR EQUAL & APPROVED

23. Wiring Accessories G.I Box MK (UK),ELETRA (KSA)VOLEX (UK)OR EQUAL & APPROVED

24. Computer Face Plates Panduit, MK (UK)

3M, R&M

Nexans,ContactumOR EQUAL & APPROVED

25. Floor box MK, DAVIS

THORSMAN, SALAMANDREOR EQUAL & APPROVED

26. T.V System PHILIPS (HOLLAND)

SONY (JAPAN)

SAMSUNG (KOREA )

SHARP( JAPAN)

OR EQUAL & APPROVED

27. Telecommunication Cables andequipment

B3 (UK)SCHNEIDER (FRANCE)BELDEN (USA)BRAND REX (UK)NEXANS (FRANCE)OR EQUAL & APPROVED

28. Lightning Protection FURSE (UK)KINGSMILL (UK)WALLIS (UK)OR EQUAL & APPROVED




E - 123

29. Uninterruptable Power Supply MERLIN GERIN(FRANCE)SCHNEIDER(FRANCE)EMERSON(USA)INFOSEC(FRANCE)SOCOMEC(FRANCE/ ITALY)

OR EQUAL & APPROVED

30. Metalic Isolators ABB (SWEDEN)MK (UK)SCAME (ITALY)OR EQUAL & APPROVED

31. Junction Boxes SCHNEIDER (UK)KRONE (UK)

ABB (UK)

SCAME (ITALY)OR EQUAL & APPROVED

Note : For approval of materials equivalent to the specified, Engineer'sdecision shall be final and binding.

All components and assembling shall be from original manufacture.

B.31 SCHEDULE OF MOUNTING HEIGHTS

1. Lighting switches : 1600 mm AFFL at Classrooms,General Toilets and Corridors and1250 mm AFFL at Administration Area and Laboratories

2. 13A socket outlet, computer terminal, : 450 mm AFFLsocket (unless otherwise mentioned) OR

250 mm above worktop

3. 13A Double socket for TV and TV : 2000mm AFFLOutlet

4. Wall mounting telephone : 1350 mm AFFL

5. Fire alarm bell : 2200 mm AFFLOR300 mm below false ceiling

6. Manual pull station : 1250 mm AFFL

7. Hand dryer and hair dryer : 1400mm AFFL

8. External fire alarm bell, class bell : 3000mm above ground floor level And sound horn speakers




E - 124

9. Wall mounted light fitting for type : 2200mm AFFL(WD) stairs 4,5 & 6

10. Wall mounted light fitting (above : 2400mm AFFLThe doors) for external and servicesBuildings

11. External wall mounted light fitting : 3000mm AFFLFor the main building

Note: The mounting heights shall be indicated by the Contractor in the workingdrawings for Consultants approval after co-ordinating with the furniture andequipment.

B.32 SCHEDULE OF DRAWINGS

The following drawings shall be read in conjunction with these specifications:




E - 125

ELECTRICAL

1 Site Plan, Ext’l. Electrical Layout E-00

2 Electrical Single Line Diagram (MV. PANEL) E-01

3 Distribution Boards Schedule E-02

4 Support Building Floor Plan, Electrical Layout E-03

5 Ground Floor, Lighting Layout E-046 First Floor, Lighting Layout E-05

7 Ground Floor, Small Power Layout E-06

8 First Floor, Small Power Layout E-07

9 Roof Plan, Electrical Layout E-08

10 Roof Plan, Lightning Protection Layout E-09

11 Ground Floor, Intercom, Public Add, Farash Call System E-10

12 First Floor, Intercom, Public Add, Frash Call System E-11

13 Low Current Systems Schematic Diagram E-12

14 Miscellaneous Electrical Details E-13

15 Miscellaneous Electrical Details E-14

16 Electrical Single Line Diagram (SMB ) E-15

TELEPHONE

1 Site Plan, Service Site Plan SSP-00

2 Support Building Floor Plan, Telephone & T.V Layout T-01

3 Ground Floor Plan, IP/ Tel, Computer, T.V. Layout T-02

4 First Floor Plan, IP/ Tel, Computer, T.V. Layout T-03

5 Telephone/Data Schematic Diagram T-04

FIRE ALARM

1 Symbols-Notes & Fire Alarm System Matrix F-00

2 Site Pan, Ext’l Fire Alarm Layout F-01

3 Ground Floor Plan, Fire Alarm System Layout F-02

4 First Floor Plan, Fire Alarm System Layout F-03

5 Roof Floor Plan, Fire Alarm Layout F-04

6 Support building floor Plan, Fire Alarm System Layout F-05

7 Fire Alarm System Schematic Diagram F-06

8 Fire Alarm Miscellaneous Details F-07




E - 126

B.33 TESTING AND COMMISSIONING

1. AUTO CLASS CHANGEOVER SYSTEM

PROJECT:REF:

CONTRACTOR:DATE:

SUB-CONTRACTOR:

A CHECK LIST YES/NO REMARKS

1. All bells installed & wired

2. All Wires in Panel Terminated

3. Battery Circuit connected

4. Power supply to ACC system connected tounswithched fused spur unit.

5. Check for proper installation of Panel

6. Check for proper installation

7. The Panel & Component inside Panel

Thoroughly Cleaned from Dust

B FUNCTIONAL TESTS

1. Battery Circuit OK

2. Check Main Menu Display OK

3. Set Clock & Check OK

4. Test Lamp OK

5. Check Main Voltage OK

6. Check Main Failure to Battery OK

7. Programme all Data in the Panel of timeSchedule

8. Adjust the Tone of Bells

C TESTING CHECK

1. Set Particular Time & Check whether all Bellsare Operating

2. Check the sound OK

3. Check alarm on Main Failure




E - 127

4. Check alarm on Battery disconnected

5. Check Bells Operating on Different timeschedule upon programming

6. Check the Auto & Manual Mode

7. Check Display of time & status in Panel onprogrammed time schedules are OK

D FINAL CHECK

1. Clear all Programme

2. Set Final Programme of time schedule for 7days

3. Display the programmed time schedule chart onside of panel

4. O & M Manuals in English & Arabic Provided

Testing & Commissioning Engineers(Contractor) Approved




E - 128

2. CHECK LIST, TESTING & COMMISSIONING OF FIRE DETECTION SYSTEM

PROJECT:REF:

CONTRACTOR:DATE:

SUB-CONTRACTOR:


1. All Duct smoke Detectors installed & wired

2. All Device installed & Wired

3. All Bells installed & wired

4. All Pull-Push Manual call is installed & wired

5. All wires in F.A Panel terminated

6. Battery Circuit connected

7. Power supply to FAP connected throughunswitched fused spur unit

8. Repeater FAP installed properly

9. All Wires Thoroughly connected in Repeater

Panel.10. Power supply wires from main FAP to Repeater

FAP is installed and terminated

11. Check any damage to FAP & Repeater Panels

12. Check any damages to Devices Bells ManualCall Points & Duct Devices if any

13. Check whether printer installed & function is OK

14. Check Communication Network card to firebrigade provided in panel.

B FUNCTIONAL TESTS (With Power ON)

1. Battery Circuit OK

2. Check Main Menu Display OK

3. Set Clock & Check OK

4. Test Lamp OK


6. Check Battery Voltage OK

7. Check Main Failure OK

8. Programme all Data for all Devices with

addresses




E - 129

C TESTING CHECKS (Both in Main & Repeater Panel)

1. All Bell operating in Loop

2. All Devices operating in Loop

3. All Duct Devices operating in Loop

4. All External Building Devices Operating in Loop

5. Check Loop Resistance & Note

6. Check Alarm in Panel When any device is faulty

7. Check silence & Reset Buttons operations is OK

8. Check under fault/fire condition the panel cannotbe reset until it is cleared

9. Check all devices under fire condition & Bell

alarm.10. Check Mains Failure Alarm

11. Check Alarm under Battery disconnected or notCharged

12. Check under fault/fire condition that particulardevice is addressed in the Main & repeaterPanel

13. Check the Belt in the Printer

14. Check message print out from the printer

D FINAL CHECK

1. Clear all faults

2. Check time & Date

3. Display the layout chart with address on the sideof Main & repeater Panel

4. O & M Manuals in English and Arabic Provided

Testing Engineers:(Contractors) Approved :




E - 130

3. FARASH CALL SYSTEM

PROJECT:REF:

CONTRACTOR:DATE:

SUB-CONTRACTOR:

A A A CHECK LIST YES/NO REMARKS

1. Panel Installed Properly

2. Check Power supply to Panel OK

3. Check all devices installed in Panel

4. Check the Bell Push Manual operation OK

5. Check all wires connected in each Bell push &Panel properly

6. Check Panel & components inside thoroughlycleaned from dust.

7. Check identification labels in each panel installedfor each bell push

B TESTING


2. Check Transformer voltage OK

3. Check each Bell Push Whether OK

4. Check on each Bell Push the Buzzer rings &resets OK

5. Check the lamp ‘ON’ on panel for each bell pushoperation & identifications are correct





E - 131

4. CHECK LIST, TESTING & COMMISSIONING OF PUBLIC ADDRESS SYSTEM

PROJECT: REF:CONTRACTOR:

DATE:SUB-CONTRACTOR:


1. Check all Speakers installed OK

2. Check Wiring to all speakers connected &terminated properly

3. Check all microphone points installed, wired &connected

4. Check all volume control Points installed, wiredand connected

5. Check Desk Microphone Unit installed, wired &connected

6. Check all hand microphone with stand provided

7. Check all Components for PA system viz. Amplifier, zoning unit, Players etc. Provided,

wired & connected

8. Check item No.7 Properly installed in Panelracks

9. Check ratings of each equipment & inaccordance with approved submittal

10. Check speakers are connected to each zone inzoning OK

B FUNCTIONAL TESTS

1. Check power supply system OK

2. Check Power supply to each equipment OK

3. Check Cassette, CD Player & FM/AM playerworking OK

4. Check amplifier & preamplifier zone OK

5. Check table stand microphone with zoning OK

6. Check all speakers are operating OK

7. Check all microphone units & points areoperating OK

8. Check power supply & operation of volumecontrol Units in each zone operating OK




E - 132

C INSTALLATION CHECKS

1. Check each zone operation for speakers &volume control independently operating OK forspeech & music is clear

2. Check all speakers on microphone operating OKwith override button for clear speech /announcement.

3. Check SPL in each area at different points notethe reading in separate sheets & attach.

4. Check the external speaker SPL & speech isclear.





E - 133

5. MEASUREMENT OF LOADS



LOADS

DESCRIPTION

R PHASE AMPS

Y PHASE AMPS

B PHASE AMPS

REMARKS

SMB –1

SMB-2

SMB-3

SMB-4

SMB-5

SMB-AC1

SMB-AC2

SMB-AC3

SMB-AC4

SMB-AC5

SMB-AC6

LIFT

Packages Unit

DB-HV

DB-MV

DB-SRDB-GR

DB-PR

DB-DR

Tested by contractor Approved :




E - 134

6. MEASUREMENT OF LIGHTING LEVEL



MEASUREMENT

DESCRIPTIONLUX REMARKS

Class Room (Typical)

Computer Room – 1

Computer Room – 2

Head Master Room

Multipurpose Hall

Assembly Hall

Offices





E - 135

SL.No. DESCRIPTION COMPLYNOT

COMPLYREMARK

1 Material

a Manufacturerb Country of Origin

c Body Type

dThickness of Body before paint &after paint

e Dimension of Body

fFabrication Sharp Edgea, Burrs &Finish

g Colour

h IP Rating

i Classification of Luminaire j Type of Lamp Holder

k Lamp Holder Fitting & Earthing

l Standards (BS-EN60598)

m Provision for Air Handling

2 Control Gear

a Type of Control Gear

b Manufacturer

c Country of Origin

d Voltage Ratinge Frequency & Current Rating

f Fitting of Body

g Easy of Replacement

hConnectionTerminals,Phase,netural,Earth

i Starters

j Standars Confirmation

3 Wiring

a Type of Wiring

b Manufacturer

c Rating

d Colour of Phase, Netural & Earth

e Size of Wire

fEarthing Connection to Body &Lamp Holder

g Type of Terminals & Size

4 Diffuser

a Manufacturer

b Material Typec Category

d Thickness




E - 136

SL.No. DESCRIPTION COMPLY NOT

COMPLY

REMARK

e Whether Anodised

f No. of Rating

5 Lamps

a Manufacturer

b Type of Rating

c Lumen Output

d Colour Temperature

e Colour Lamp

6 Installation / Assembly

a Fixing Detail of Body

b Gaps With Body & Diffuserc Fitting of Diffuser With Body

d Installation of Lamps

e Fitting of Control Gear

f Internal Wiring

g Rating Plate

h Complete Assembled Lumanaire

7 Testing

a Insulation Resistance

(i) Control Gear

(ii) Wiring

(iii) Lamp Holder to Body

b Mechanical Test on Body & Components.

c Measurement of Light out put of Fitting

With The Lamps

d Measurement of Temperature of All

Component & Terminals on Load

e Measurement of Leakage Current

f Voltage Withstand on Lamp Holders &

Fitting

g Measurement of Voltage Drop

8 Documenttation

a Factory Test Certificate of Fitting

b Factory Test Certificate of All Components

c Type of Test Certificate of Project

Requirements

(i) IP Rating

(ii) Ambien Temterature

(iii) Compliance to Standards




E - 137

7. M.V. PANEL

SL.NO

DESCRIPTION PROPOSED MAKE REMARKS

1 Construction

a Structure Sheet Steel Thickness

b Door Sheet Steel Thickness

c Type of sheet steel

d Form of Panel

e Dimension of Panel

f No. of Transport section

gDepth of Single Core CableCompartment

h Confirmation to standards

i Type of Gland Plate for Incomer

j Type of Gland Plate for Outgoing

k Outgoing Terminal Suitable forlarge Parallel Cable Termination

l All Doors & Openings ProperlyEarthed / Bonded

2 Busbars

a Type of Copper & Current Density

bSize of Main Horizontal and Vertical(at ACB) Busbars

cHeat shrinkable colour codedsleeve.

dSize of Vertical Busbars atOutgoings

e Type of Busbars Supports

f Size of Earth Busbars

gNeutral - Earth Link Provided &Size

hCurrent Rating of Main Busbars at35oC&50oCAmbient Temperature

i Current Rating of Vertical OutgoingBusbars at 35oC & 500CAmbientTemperature

j Clearance of Busbars Between

(i) Phase to Phase

(ii) Phase to Neutral

(iii)Phase to Body




E - 138

3 Panel Components

a Air Circuit Breaker Panel

(i) Rating

(ii) Model No. of ACB

(iii) Whether Drawout & Motorised

(iv) Type of Control unit with settingrange

(v) Rating of CT's for metering

(vi) Rating of CT's for REF & Qty.

(vii) Shunt Voltage for trip

(viii)Type & Range of Ammeter

(ix) Type & Range of Voltmeter

(x) Type & Range of REF Relay(xi) Type of Indicating Lamp

(xii)Type & Rating of control wiringused with sizes

(xiii)Control Circuit & Meteringcircuit protectionprovided

(xiv)whether reset/ Alarm & HootingProvided

(xv) Heater Provided with control

(xvi)Type & Rating of Terminal

Block

(xvii)Whether H.V Inter-tripProvided

(xviii)KWH 10 Way Terminal BlockProvided

b Outgoing Panel

(i) Rating of each MCCB's

(ii)Type & Model Nos. of eachMCCB's

(iii) Each Type MCCB's With

adjustable Thermal & Magnetic tripProvided & Range

(iv) whether Padlockable with Door

(v) Whether Door Interlockable

(vi) Panel Heater Provided

c Other Components

(i) Type of Battery

(ii) Rating of Battery

(iii)Type & Rating of BatteryCharger

(iv)Type of Panel Heater & Rating




E - 139

4 Test & Certificates

a

Short Circuit Rating & Type testcertificates of Proposed Panel

bTemperature Rise Rating & Typetest certificate of Proposed Panel

c

Short Circuit Rating & Type TestCertificate of Proposed ACB withICU, ICS & ICUS

d

Short Circuit Rating & Type TestCertificates of Proposed MCCBwith ICU, ICS

e Dielectric H.V. Test

f Mechanical Strength & Test

g IP Rating of Proposed Panel

h Arcing Test on ACB Panel

iInsulation Resistance of Busbar's &control circuit

jPrimary injection test for meters &protection CT's

kSecondary injection test for relays& CT's

l Milli Volt Drop Test (Ductor Test)

m ACB Control Unit Test

5 Confirmation to Standards

a Main Panel

b ACB & MCCB's

c CT's

d Busbars

e REF Relay

f Meters

g Battery & Chargers

6 Documentsa List of Testing equipment in factory

bCalibration Certificate of allEquipments

c Type Test Certificate of

(i) Short Circuit of Panel &Components

(ii)Temperature Rise

dFactory Routine Sample TestSheets




8. POWER CABLES

SL.

NO

DESCRIPTION PROPOSED STANDARDS REMARKS

1 Construction

a Material Type of Conductor

b Type of insulation

c Core Identification

d Type of filler Material

e Type of Barrier Tape

f Bedding Type

g Bedding Material

h Armour Material Typei Oversheath finish Material Type

k Voltage Rating of the Cable

2 Data for Cable Sizes

a Thickness of XLPE insulation

b Thickness of Barrier Tape

c Thickness of Extruded Bedding

d Thickness of Armour

e Thickness of oversheath finish

f Overall size & weight of cablesg Current Rating Chart

S C C