ch- e-16 gtp content - optcl e-16 – gtp content 40 11 kv b&s insulator 41 lt distribution box...

CH- E-16 – GTP CONTENT

GTP No

Name of Items

1 11kV VCB (Outdoor) 2 33kV VCB (Outdoor) & 33 kV VCB (Indoor) 3 11kV CT 4 33kV CT 5 11kV Metering Unit 6 55sqmm AAAC 7 HTTV meter 8 POWER TRF 9 STATION TRF-100 kVA

10 Transformer oil 11 33kv HG fuse 12 11kv HG fuse 13 33kv Isolator 14 11kV Isolator 15 33KV AB SWITCH 16 11KV AB SWITCH 17 PSC Pole 18 100sqmm AAAC 19 148sqmm AAAC 20 33kv Pin Insulator 21 11kv Pin Insulator 22 33 kV Surge Arrester 23 11kv Surge Arrester 24 Numerical Relay 25 25KVA DTR GTP 26 63 KVA DTR GTP 27 100 KVA DTR GTP 28 33kV & 11kV V cross arm 29 RS joist 30 HT STAY SET 31 Stay wire 32 Tension clamp 33 Suspension clamp 34 Back clamp 35 F clamp 36 Flexible cu bond 37 Earthing pipe 38 Earthing Coil 39 33 kV B&S Insulator

CH- E-16 – GTP CONTENT

40 11 kV B&S Insulator 41 LT Distribution Box 42 LT 3 half-core 43 LT 2-CORE 44 ACSR Zebra 45 11kV 3 Core line 300sqmm

Page No-1 of 2 / 11kv VCB

GTP NO-1 Guaranteed Technical Particulars of 11kV Circuit Breaker(Indoor)

SI. No Name of the Particulars Desired Value Bidder's Offer

1 Make

2 Service type Indoor

3 No. of Poles 3

4 Nominal system voltage 11 kV

5 Highest system voltage 12kV

6 Rated normal current at 50°C

i) For Bus-bar of Circuit Breaker 1250A

ii) For Interrupter 630A

7 Rated short circuit breaking current (rms) 25kA

8 Rated short circuit making current (peak) 62.5kA

9 Rated short time current withstand capability for

3 sec. 25kA

Page No-2 of 2 / 11kv VCB

10 Rated insulation level:

i) One minute power frequency withstand voltage

to earth (wet and dry) rms 28kV

ii) Impulse withstand voltage to earth with

1 .2/50 µsec, wave of +ve and —ve polarity (Peak)

75KV

11 First — pole — to clear factor 1.5

12 Rated operating sequence (for auto reclosing) 0-0.3 Sec- CO-3 min-

CO

13 Maximum break time 3 cycles

14 Rated out of phase breaking current 25% of the symmetrical

short circuit breaking current

15 Maximum pole scatter 10 mili seconds

16 Rated Auxiliary supply for spring charge motor,

lamp & heater circuit. 230V A.C

17 Rated supply voltage for trip/close coil 48 V D.C

Page No-1 of 3 / 33KV VCB intdoor type

GTP NO - 2 (i) Guaranteed Technical Particulars of 33 KV VCB (Outdoor)


1 Make

2 Service type Indoor

3 No. of Poles 3

4 Nominal system voltage 33KV

5 Highest system voltage 36KV

6 Rated normal current at 50°C

i) For Interrupter 1250A

7 Rated short circuit breaking current (rms)

25KA

8 Rated short circuit making current (peak) 62.5KA

9 Rated short time current withstand capability for 3 sec.

25KA


i) One minute power frequency withstand voltage to earth (wet and dry) rms 70kv

ii) Impulse withstand voltage to earth with

1 .2/50psec, wave of +ve and —ve polarity (Peak) 170KV



12 Rated operating sequence (for auto reclosing)

0-0.3 Sec- CO-3 min-CO


14 Rated out of phase breaking current 25% of the symmetrical short

circuit breaking current


16 Rated Auxiliary supply for spring charge motor, lamp & heater circuit.

230V A.C

17 Rated supply voltage for trip/close coil 48V D.C

18 Minimum creepage distance (mm) 900 mm

19 Minimum protected creepage distance (mm) As Per IS

20 Total break time in MS

21 At 10% rated interrupting capacity <80ms

21 a At rated interrupting current <80ms

21 b Arcing Time <15ms

22 Make time <100ms

23 Minimum reclosing time at full rated interrupted MVA

from the instant of Trip coil energisation

300ms


24 Minimum dead time for 3 phase closing 300ms

25 one time dry power frequency withstand test voltage between line terminal and ground objects

70kv

26 onemin dry power frequency withstand test voltage between terminal with breaker contacts open

80kV

27 Type of main contacts

28 Type of Aux. Contacts

29 Materials of auxilliary contacts Copper Alloy

30 Voltage distribution between breaker

31 Type of device if any ,used to limit the rate of rise or restriking voltage Nil

32 Voltage grading device if any used Nil

33 Number of auxiliary contacts provided

i) those closed when breaker is closed 6

i) those open when breaker is closed 6

34 Type of operating mechanism


i) Opening

Spring charged due to closing both manual and motorized Spring operated

ii) Closing


35 Frequency at which contacts are to be replaced

After 100 full short circuit operations

36 Nos of terminal connetor 6

37 Short circuit type test certificate furnished

38 Circuit breaker weight

39 Minimum clearance in air

i) Between phases >480mm

ii)Live parts to earth >320mm

iii) Live parts to ground level >3700mm

iv)Between Liver parts & ground object >320mm

40 Bushing of insulators


i) Type of bushing Porcelain

ii)Dry 1 min power frequency withstand test voltage 70kV

iii) Dry flash over value >75kV

iv) Wet flashover value >75kV

v) 1.2/50 impulse withstand 170KVp

vi) Creepage distance 900 mm

vii) Puncture value of bushing >75kV

viii)Weight of bushing <45kG


GTP NO -2 (ii) Guaranteed Technical Particulars of 33 KV VCB (Indoor)


1 Make

2 Service type

Indoor

3 No. of Poles

3

4 Nominal system voltage

33KV

5 Highest system voltage

36KV

6 Rated normal current at 50

°C

i) For Bus-bar of Circuit Breaker

800A

ii) For Interrupter 630A

7 Rated short circuit breaking current (rms) 25KA

8 Rated short circuit making current (peak)

62.5KA

9 Rated short time current withstand capability for 3 sec.

25 kA


i) One minute power frequency withstand voltage to earth (wet and dry) rms

70kV


ii) Impulse withstand voltage to earth with 1 .2/50psec, wave of +ve and —ve polarity (Peak)

170KV


12 Rated operating sequence (for auto reclosing)

0-0.3 Sec- CO-3 min-CO


14 Rated out of phase breaking current 25% of the symmetrical short

circuit breaking current


16 Rated Auxiliary supply for spring charge motor, lamp & heater circuit.

48 V DC/230V A.C

17 Rated supply voltage for trip/close coil 48V D.C

18 Minimum creepage distance (mm) 900 mm

19 Total break time in MS

(a) At 10% rated interrupting capacity <80ms

( b) At rated interrupting current <80ms

20 Arcing Time <15ms

21 Make time <100ms

22 Minimum reclosing time at full rated interrupted MVA from the instant of Trip coil energisation

300ms

23 Minimum dead time for 3 phase closing 300ms

24 one time dry power frequency withstand test voltage between line terminal and ground objects

70kv

25 one time dry power frequency withstand test voltage between terminal with breaker contacts open

80kv

26 Type of main contacts

27 Type of Aux. Contacts

28 Materials of auxilliary contacts Copper Alloy

29 Voltage distribution between breaker

30 Type of device if any ,used to limit the rate of rise or restriking voltage

Nil

31 Voltage grading device if any used Nil

32 Number of auxiliary contacts provided

i) those closed when breaker is closed 6

ii) those open when breaker is closed 6

33 Type of operating mechanism

i) Opening Spring charged due to closing both manual and motorized Spring operated

ii) Closing


34 Frequency at which contacts are to be replaced

After 100 full short circuit operations

35 Nos of terminal connetor 6

36 Short circuit type test certificate furnished

37 Circuit breaker weight

GTP NO – 3 GUARANTEED TECHNICAL PARTICULARS FOR 11KV CURRENT TRANSFORMERS

Sl. No. Name of the Particulars Desired Value Bidder’s Offer

1 Make

2 Type of CT Installation Single phase, dead tank, oil-filled

Poly Crate hermetically sealed outdoor, self-cooled.

3 Type of mounting Pedestal type

4 Suitable for system frequency 50 HZ (- 5% to +3%)

5 Rated Voltage (KV rms) 11

6 Nominal System Voltage (KV rms) 11

7 Highest System Voltage (KV rms) 12

8 Current Ratio (A/A) 400-200 -100/1-1-1 A

9 Method of earthing the system where the current transformers will be installed

Effectively earthed

10 Rated Continous Thermal Current (A) 120% of rated primary current

11 Acceptable limit of temperature rise above 500C ambient temperature for continuous operation at rated continuous thermal current

(a )W ind ing 400C

(b) OIL 350C

(c )External surface of the core, metallic parts in contact with or adjacent to, insulation.

40ºC

11 12

1.2/50 micro second lighting impulse withstand voltage (kVP) (dry)

75

13 1 Minute dry power frequency withstand voltage primary (kV rms)

28

14 1 Minute dry power frequency withstand voltage secondary (KV rms)

3

15 Minimum creepage distance of porcelain Housing (mm) 350

16

Rated short time withstand current for 3 second duration at all ratios (KA rms) 25

Instrument security factor at all ratios for metering core Not more than 5.0

17 Maximum rated short time thermal current density of the primary winding copper conductor (A/mm2 ) at all ratios

92

18

Type of Core Torroidal type

19

Seismic acceleration

0. 15g (Vertical)

0.3g (Horizontal)

20

Accuracy class of standard C.T to be used during testing towards determination of ratio errors and phase angle errors for metering cores.

0.05 or better.

Page No-1 of 3 / 33kv CT

GTP NO -4 GUARANTEED TECHNICAL PARTICULARS FOR 33 KV CURRENT TRANSFORMERS

Sl. No.

1

Name of the Particulars Desired Value Bidder's Offer

Make

2 Type of CT/Installation. Single phase, dead tank, oil filled, hermetically sealed,

outdoor, self-cooled

3 Type of mounting. Pedestal type

4 Suitable for system frequency. 50 HZ (+ 5 % to -3%)

5 Rated voltage (KV rms) 33

6 Nominal system voltage (KV rms) 33

7 Highest system voltage (KV rms) 36

8 Current ratio (A/A) a) 400-200/1-1-1A

9 Method of earthing the system where the current transformer will be installed.

Solidly Effectively earthed.

10 Rated continuous thermal current (A) 120 % of rated primary

current


11

Acceptable limit of temperature rise above 50°C ambient temperature for

continous operation at rated continuous thermal current.

(a) Winding 45°C

(b) Oil 40°C

(c)

External surface of the core, metallic parts in contact with or adjacent to, insulation.

45°C

12 Acceptable partial discharge level Less than 10 pico coulombs

13 Maximum radio interference voltage at l. l times the maximum rated voltage.

Less than 500 micro volts

14 l.2/50 micro second lightning impulse withstand voltage (KVP) (dry)

170

15 1 minute dry power frequency withstand voltage primary (KV rms)

70

16 Switching Impulse with stand and voltage (KVP)

17 l Minute dry power frequency withstand voltage secondary (KV rms)

3

18 Minimum creepage distance of porcelain Housing (mm)

900

19 Rated short time withstand current for 3 second at all ratios (KA rms)

25KA

20 Instrument security factor at all ratios for metering core.

Not more than 5.0


21

Minimum rated short time thermal current density of the primary winding at all ratios (A/mm2)

As per clause No9.6.3- Note of IS: 2705 (Part-I)/l992

22

Application, current ratio, output burden, accuracy class, minimum knee point voltage, secondary winding resistance, maximum excitation current at minimum knee point voltage etc.

23 Type of core

24 Seismic acceleration 0.15g (Vertical) 0.3g (Horizontal)

25

Accuracy class of standard C.T. to be used during testing towards determination of ratio errors and phase angle errors for metering cores.

0.05 or better.

Page No-1 of 9 / 11kV metering unit

GTP NO- 5 GUARANTEED TECHNICAL PARTICULARS OF OUTDOOR OIL IMMERSED 3P4W,11 KV,5A MU (CT: PT UNITS).

Sl no Particulars Requirement To be furnished by the bidder

1 Maker’s name & adress To be indicated

2 Manufacturer’s Type & Design To be indicated

3 Type of cooling To be indicated

4 Nominal System Voltage 11 KV

5 Highest System Voltage 12 KV

6 Frequency. 50 HZ

7 Specification of CT & PT of Metering Unit

A

Current Transformer

Type Oil immersed

Accuracy Class 0.2

Rated output 15 VA

Insulation level 28KVrms / 75 KVpk

Short time thermal current rating for 1 sec

CT Primary 6 KA for up to20/5A & 13KA for >20/5A

Saturation factor To be indicated

Normal current density of primary winding

=<1 .6 Amps per Sq.mm

Knee Point Voltage To be indicated


Continuous percentage over load 120%

ISF As per IS

B

Potential Transformer

Type Oil immersed

PT ratio 11 KV/√3V /110/ √3V

Rated output VA/phase 50

Class of accuracy 0.2

Insulation level 28KVrms / 75 KVpk

Winding connection Star/Star

Rated voltage factor & duration To be indicated

8

i

ii

iii

Dimension of MS hot dip Galvanized tank

Height mm

To be indicated

Breadth mm

Length mm

9 i) Thickness of MS Tank Side walls Bottom

3.15mm

ii Top 5 mm

iii Edge bending in the Top Cover To be provided

iv Standard pressure & duration that can be withstand.

To be indicated

10 Weight of core and winding

A.

Current transformer

Core To be indicated

Primary winding To be indicated


Secondary winding To be indicated

B.

Potential transformer

Core To be indicated



11 i) Quantity of oil in Ltr ( Min 45 Ltrs) To be indicated

ii)

Grade of Oil To be indicated

12 Total weight of complete ME including

all accessories and oil To be indicated

13

Resistance of primary & secondary winding per phase at 75° C:-

CT Winding (i) Primary To be indicated

(ii) Secondary To be indicated

PT Winding (i) Primary To be indicated

(ii) Secondary To be indicated

14 Maximum attainable winding

temperature 85° C

15

Minimum phase to phase distance 255mm

Shortest distance between metal part & earth

190 mm

Make & type of HT bushing To be indicated


16

Creepage distance of HV bushing 300mm (Min)

17

Bi-metallic terminal connector with nut, plain washer, spring washer & check nut suitable for aluminum conductor as per CT rating.

6 nos to be provided

18 Type of core material To be indicated

19 Type & thickness of gasket used on

i Top cover tank To be indicated

ii Secondary terminal box To be indicated

iii HV bushing To be indicated

20 Details of Metering Unit

A CT details

Cross section area of each turn of CT winding (in sq. mm.)



No. of turns



Winding material

http://sq.mm/




B PT details

i Cross Section area of each turn of PT (in sq. mm.)

a Primary winding To be indicated

b Secondary winding To be indicated

ii Number of turns

a Primary winding To be indicated

b Secondary winding To be indicated

c Winding materials

i Primary winding To be indicated

ii Secondary winding To be indicated

21 Identification/marking of

i. Primary terminals

a Incoming RM, YM, BM

b Outgoing RL, YL, BL

ii Secondary terminals

a CTs 1s1- 1s2, 2s1-2s2, 3s1-3s2

b PTs r,y,b,n

22 Size and material of

i. Primary studs M12 up to 20A & M16 >20A

ii Secondary studs M6

http://sq.mm/


23

Secondary Chamber shall have double door type & sealing arrangement in both the doors.

Secondary chamber shall have double door (inner & outer) with

suitable arrangement for sealing of both the doors. The inner door

shall be of transparent polycarbonate so that secondary

terminal connections can be viewed with out breaking the inner

door seals.

24 Name Plate

The name plate shall be non- detachable type & fixed with rivets,

not with bolts & nuts. The nameplate should bear year,

month of manufacture , Guaranty period & other data as per IS.

25 Sealing arrangements

The secondary terminal box cover, tank cover and inspection cover sealing arrangements have to be

done with sealing bolts at all corners and bolts should be at least 10 mm diameter GI bolts spaced maximum

70 mm apart. Sealing holes also to be provided in the bolts fitted with

bushing & body for sealing, so that one can not open the bushing with out

breaking seals.


26 Galvanization of Tank Metering Unit tank including top

cover shall be hot deep galvanized.

27 Gap between I/C & O/G Studs of same phase

minimum 15º angle with the vertical axis to maintain a good

distance at stud levels.

GUARANTEE TECHNICAL PARTICULARS FOR OIL

Sl. No Characteristic. Particulars. To be furnished by the bidder

1 Appearance.

The oil shall be clear and transparent and free from suspended matter or sediments and should conform to or latest versions. IS-335/93

2 Density at 27 degrees C (max) 0.89 g/cm.

3 Kinematic Viscosity at 27 degrees C (max)

27 CST.

Interfacial Tension at 27 Degrees C (max)

Flash point, pensky – marten (closed) (min)

Pour point (max)

4

5

6

7.

0.04 N/M.

140 Degrees C.

-10 Degrees C.

Neutralisation Value:

a) Total acidity (max) 0.01.

b) In-organic acidity alkalinity. Nil


8 Corrosive sulphur. Non-corrosive.

9

Electric Strength (breakdown voltage/ minute)

a) New unfiltered oil. 30 KV (rms)

b) After fi ltration. 50 KV (rms)

10 Dielectric dissipation factor(Tan delta at 90 Deg. C (min)).

0.005.

11

Specific resistance (Resistivity).

a) At 90 Deg. C (min) 30x1 012

ohms- cm.

b) At 27 Deg. C (min) 500x1 012

ohms-cm

12

Oxidation stability

a) Neutralisation value after oxidation (max)

0.2 mg KOH/g

b) Total sludge after oxidation (max) 0.05% by Weight.

13

Ageing characteristics after accelerating ageing (open breaker method with copper catalyst) for 96 Hrs.as per ASTM D. 1934-1978)

a) Specific resistance (Resistivity) a. At 27 Deg. C (min) b. At 90 Deg. C (min)

2.5 x 1012 ohms-cm 0.20 x 1012 ohms-cm


b) Dielectric dissipation factor Tan

delta at 90 Deg. C (max) 0.2

c) Total sludge value (max) 0.5

d) Total acidity (max) 0.5

14 Presence of oxidation inhibitor. Nil

15 Water content (max) 50 ppm

GTP NO-6 GUARANTEED TECHNICAL PARTICUALRS OF 55MM2 AAAC

Sl.No. Description Unit 55mm2

Bidder'sOffer

1 Manufacture’s Address

2 Indian Standard No. IS 398 (Part-4)1 994

IS 398 (Part-4)1 994

3 IEC Standard No.IEC 1089 IEC 1089

4 Materials of conductor AAAC

5 Aluminum alloy redraw rod manufacturer

Balco, Hindalco,Kunj Alloys,Nalco & any other

approved sources.

6 Drawing aluminum wire manufacturer

7 Standing complete conductor manufacturer

8 Nos. of Strands

7

9 Dia of each strand mm 3.15

10 Total cross-sectional area of conductor mm2

55

11 Overall dia of stranded conductor Mm 9.45

12 Mass of conductor per kilometer(without grease) Kg 149.2

13 Mass of grease per kilometer of conductor (Approx.) Kg N.A.

14 Total mass of greased conductor per ki lometer(Approx.)

Kg 149.2 without grease

15 Conductor grease type N.A.

16 Ultimate strength of conductor Newton 16030

17 Assumed equivalent modulous of elasticity of conductor

N/ mm2

62038

18 Assumed equivalent co-efficient of elasticity N/ mm2

62038

19 Assumed equivalent co-efficient of linear expansion Per °C 23.0x1 0-6

20 Maximum length of conductor supplied in one drum Km 6.0±5%

21 Maximum D.C. resistance at 20ºC Ohm/Km 0.621

22 Maximum full load current at 75°C (40°C ambient) Ampere 191

23 Individual Aluminum alloy strands

a. Tensile breaking stress N/ mm2

299.4

b. Elongation on 200mm length in breaking % 4

c. Maximum electrical resistance at 20°C Ohm/Km 4.29

24 Particulars of raw material

Minimum purity of Aluminum alloy % 97.25

Aluminum redraw rod conforming to Type Si-Mg

Elements

i. Si % 0.50 to 0.90

ii. Mg % 0.6 to 0.90

i i i . Fe Max % 0.5

i v . Cu Max % 0.1

v.Mn Max % 0.03

vi. Cr Max % 0.03

vii.Zn Max % 0.1

v i i i . B M a x % 0.06

ix. Other Element each Max % 0.03

Total Max 0.1

25 DC resistance of conductor at 20°C(Max) Ohm/Km 0.621

26 Standard length of conductor that can be manufactured

Meter 2000±5%

27 Maximum length of conductor that can be manufactured

Meter 3000

28 Toleranceonstandardlengthofconductor % ±5%

29 Direction of layer for outside layer RH/LH RH

30 Weight of the drum (only) Kg 150 to 180

Page No-1 of 10 / HTTV 3 PH Meter

GTP NO-7 GUARANTEED TECHNICAL PARTICULARS FOR 3 PHASE 4 WIRE CT! PT OPERATED

FULLY STATIC AMR COMPATIBLE TRI-VECTOR ENERGY METERS ( Common Protocol Energy Meter Conforming to companion

standard for IEC 62056!IS1 5959) Category-A

Sl. No.

Particulars Desired Value Bidder’s Data

1 Make

2 Type 3PH 4 Wire, Tri vector Energy Meter (AMR

Compatible)

3 Country of origin India

4 Application 3 phase 4 wire, CT PT operated

5 Rated Voltage (i)For CT/PT operated HT Meters-Suitable for

operation from 11 0V Ph-Ph or 63.5V Ph-N

6 Rated Current (Basic current) 1A for -/1A,5A for -/5A

7 Frequency 50 Hz ± 5 %

8 Overload capacity 200% of Ib

9 Minimum starting current in % of base current

As per IS 14697: 1999

10 Short Time Current As per IS 14697: 1999

11 Loss in potential circuit Less than 1.5 Watt & 8VA per phase

12 Loss in Current circuit Less than 1 VA

13 Power Factor 0.0 Lag -Unity- 0.0 Lead


14 Change in error due to

a. Variation in frequency 50 Hz +/- 5%

b. Variation in temperature As per IS 14697: 1999

c. Variation in voltage As per IS 14697: 1999

15 Accuracy Class LT- 0.5s, HT-0.2s

16

Constructional Requirement/Meter Cover

As per Clause:-5.0 of Tech.

Sealing arrangement Specification.

17 Meter Cover & Case As per Clause:-5.1 of Tech. Specification.

18 Meter Case Opening Temper Recording

As per Clause:-5.1.1 of Tech. Specification.

19 Terminal & Terminal Block As per Clause:-5.2 of Tech. Specification.

20 Terminal Cover As per Clause:-5.3 of Tech. Specification.

21 Terminal Arrangement As per Clause:-5.4 of Tech. Specification.

22 Connection Diagram As per Clause:-5.5 of Tech. Specification.

23 Sealing of Meter As per Clause:-5.6 of Tech. Specification.


24 Working environment & degree of protection.

As per Clause:-6 of Tech. Specification.

25 Manufacturing Process assembly & Testing

As per Clause:-7 of Tech. Specification.

26 Displays As per Clause:-8.0 of Tech. Specification.

27 Non Volatile Memory

The data stored in the meters shall not be lost in the event of power failure. The meter shall have Non Volatile Memory (NVM), which does not need any battery backup. The NVM shall have a minimum retention period of 10 years.

28 Battery Back up

In case of failure of power supply the meter could be powered up the meter could be powered up through an internal battery

backup with a push button arrangement.

29

Performance under As per IS -14697/1 999

Influence Quantities (re-affirmed 2004) & CBIP


30

31

32

33

34

35

36

37

38

39

Out Put Device

Technical Report

As per Clause:-10 of Tech.

Specification.

RTC As per Clause:-11 of Tech. Specification.

Quantities to be measured & displayed. As per Clause:-12 of Tech. Specification.

Demand Integration Period Should be programmable & 15 min by default.

Auto reset at 24:00 hrs at the end of each

MD Reset billing cycle.

Marking As per Clause:-15 of Tech. Specification.

Communication Capability As per Clause:-16 of Tech. Specification.

HHU As per Clause:-17 of Tech. Specification.

One DLMS Compliant HHU shall be provided

by the supplier to DISCOM free of cost for each 50(fifty) meters for data down loading. It

Free supply of HHU shall be compatible to the DLMS compliant energy meters that are to be

procured/supplied on the basis of this technical specification

Tamper & Fraud As per Clause:-18 of Tech.


monitoring features Specification.

40 Abnormality Events Detection

As per Table A6.1 to A6.7 “Data Exchange for

Electricity Meter Reading, Tariff and Load Control – Companion Specification”

enclosed).

41

1

2

Load Survey capability Parameter Logged

1 .Real Time Clock – Date and Time.

2.Current – IR 3. Current – IY 4.Current – IB

5.Voltage – VRN 6.Voltage – VYN 7.Voltage –

VBN 8.Block Energy kWh

9.Block Energy – kvarh – lag 10.Block Energy

– kvarh – lead 11 .Block Energy – kVAh

ii. Logging interval (PROGRAMMABLE,15 Minutes by default )

iii. No. of days of Load Survey 60 power on days

iv. Apparent Calculation Lag + Lead

42 TOD TIMING (Both MD & ENERGY) 00: 00 Hrs to 06:00 Hrs 06:00 Hrs to 24:00

H rs

39


43 MD RESET REQUIRED AUTO MODE ONLY, MANUAL RESET NOT

REQUIRED

44 Software Locking The meter shall have password protected

software locking provision for changing the TOD timings & MD integration period.

45 Software

The firm has to provide required base computer & MRI software for data down

loading & analysis with free of cost.

46 Meter Reading Protocol

The Supplier has to provide Meter Reading Protocols for billing parameters, tamper data

etc. at free of cost.

GUARANTED TECHNICAL PARTICULARS FOR POLYCARBONATE OR SMC OR COMBINATION OF POLYCARBONATE & SMC PILFER PROOF METER BOX TO HOUSE THE THREE PHASE FOUR WIRE HTTV ENERGY METERS

Sl. No.

Characteristics Requirements Bidders Data

1 Manufacturer’s / Supplier’s name and

address with works address.

2 Material used for box body

Poly Carbonate/SMC (Sheet Moulding Compound)ref-IS: 13410/1992 /IS:14772

:2000Combined

3 Color of Box Dark Admiral Gray/off White/Transparent

4 Dimensions of box (L x W x H) 45x38x20 CM (approx)

5 Meter Fixing Arrangement

Adjustable Meter Mounting Arrangement may be provided to accommodate any make of

Meters (like Secure, L&T etc.).


6 Earthing Provisions To be provided

7

Thickness of meter box

2.5 mm Back Side 2.0 mm all other side.

a. From Back Side

b. From all other sides

8 Clearance of meter from box surface approx. :(Varies from meter to meter)

a. Right , Left 10 cm

b. Top side 1 cm

c. Bottom side ( from meter terminals) 12 cm

d. Bottom side ( from terminals cover) 8 cm

e. Front side 11cm

9 Additional “D” Port

Additional “D” Port provision provided in the

inner door of the box with sealing arrangement for downloading data through MRI.


10 Doors Provision of two (Inner door & outer door) arrangement to be provided.

11 Push button hole Push button hole shall be done by DISCOMs

at the time of installation.

12 The material of inner door shall be SMC

13 Cable Entry Hole.

For cable entry, one suitable circular holes

fitted with adjustable glands will be provided at the bottom of the box for cable inlet and outlet. Internal diameter of the gland will be such as

to accommodate the control cable having outer diameter 25-30mm.The cable entry hole position can be changed by DISCOMs as per the field requirement & will be narrated during

the placement of Purchase Order.

14 Type of Use Meter Box should be suitable for

Meter Box should be suitable for indoor & outdoor use.

15 Suitable to house

The meter box will be suitable to house one number three-phase four-wire HTTV energy

meter & a modem of any make.


16 The meter box shall comply with IS:1 3410- 1992

17 Roof tapering

Meter Box will have a roof tapering

arrangement for easy flow of rainwater, as per sample.

18 Hinges

Box cover will be fixed with minimum three nos hinges in each door well protected against corrosion. Box cover will be able to open by more than 120 degrees. Concealed hinges should fix the Box and cover, with hardware from inside in such a manner that it can’t be

manipulated from outside.

19 Gasket

Soft rubber gasket for protection from ingress of dust and water will be provided on all

around the box.

20 Handle Handle/Knob will be provided on the Box door

for easy door opening.

21 Inner door, viewing window & D-Port.

The box shall be provided with two (inner & outer) doors. A viewing window must be

provided in inner door if not transparent. One D-Port provision for communication must be provided in the inner door of each box with

sealing arrangements.


22

Fixing Holes Box shall be provided with 4 nos. fixing holes of 6 mm diameter at all four corners of meter

box.

Sealing & Latches.

For holding and sealing the outer door, U-

shaped latches/clamps with two sealing holes will be provided. Two nos Latches will be provided on the base of the box. These

metallic parts will be protected against corrosion. Provision shall be made for sealing

of doors at two locations.

24 Viewing window

The viewing window for meter reading will be

made of break resistant, UV stabilized,

transparent Polycarbonate of minimum 2.0 mm. Thickness the transparent window will be properly welded/fixed in rigid way with meter

25 Adjustable meter mounting Arrangem

Adjustable meter mounting arrangement to be provided in such a way that the display portion of any make meter can be easily aligned with et the viewing window of outer door, So that

meter reading can be done easily without opening any door of meter box.

26 Name Plate.

Purchase order No. & Date, Property of

Owner Name-OPTCL. will be mentioned on metallic name plate in such a manner that it

will not be erased & removed easily. Name of Manufacturer will be embossed on meter box

cover.

GTP NO-8 GUARANTEED TECHNICAL PARTICULARS FOR POWER TRANSFORMERS OF3.1 5 MVA,5 MVA & 8 MVA

Sl. No . Name of the Particulars Bidder's offer

1 Name and address of the Manufacturer a) Transformer b) HV & LV Bushings c) Bimetallic connectors d) Transformer Oil e) On load tap changer f) Instruments g) Neutral Bushing CTs 2 Service ( Indoor / Outdoor )

3 Normal continuous rating in KVA under site conditions at all

taps :

a) HV winding (KVA) b) LV winding (KVA) 4 Rated Voltage a) HV winding (KV ) b) LV winding (KV) 5 Rated frequency (Hz) 6 No. of phases 7 Type of transformer 8 Connections a) HV winding b) LV winding 9 Connections symbols HV – LV

10 Tappings

a) Range b) Number of steps

c) Position of tapping on HT winding for high voltage variation

d) e) 11 Reference ambient temperatures a) Maximum ambient air temperature (

0C)

b) Maximum daily average ambient temperature (0C)

c) Minimum ambient air temperature (0C)

d) Maximum yearly weighted average ambient temperature (0C)

12 Maximum temperature rise over ambient temperature a) Top oil by thermometer (

0C)

b) HV & LV windings by resistance measurement (0C)

c) Hot Spot Temperature rise of windings(0

C)

d) Limit for hot spot temperature for which the transformer is

designed (0

C)

e) Temperature gradient between windings and oil (0C)

f) Type of maximum winding temperature indicator (0C)

13 Voltage to earth for which the star point will be insulated

14 Cooling type 15 Losses

a) No-Load loss at rated voltage & rated frequency (KW)

b) Load loss at rated current at Normal Tap at 750 C (KW )

16 Max. Current density in winding at rated current for normal tap

position

a) HV winding (Amps/ sq.mm.) b) LV winding (Amps / sq.mm.)

17 Impedance voltage at rated current ,rated frequency and at 75

0 C

expressed as percentage of rated voltage at :-

a) Principal (normal) tap (%) b) Highest tap (%)

http://sq.mm/

http://sq.mm/

c) Lowest tap (%)

18 Reactance at rated current & frequency as percentage of rated

voltage at:

a) Principal (normal) tap b) Highest Tap c) Lowest Tap

19 Resistance at 750

C a) H.V. winding at normal tap position b) L.V. winding

c) Resistance voltage drop at 75

0 C winding temperature expressed as

percent of rated voltage (%)

i) Principal/ normal tap ii) Highest tap iii) Lowest tap

20 Insulation level

a) Separate source power frequency voltage withstand

i) HV winding (KV rms) ii) LV winding (KV rms)

b) Induced over voltage withstand i) HV winding (KV rms) ii) LV winding (KV rms)

c) Full wave lightning impulse withstand voltage

i) HV winding (KV peak)

d) Power frequency high voltage tests i) Test voltage for one minute withstand test on high voltage

windings (induced)

ii) Test voltage for one minute withstand test on low voltage

windings

iii) Test voltage for one minute withstand test on neutral end of low

voltage windings

e) Lightning impulse withstand tests

i) Impulse test on high voltage winding 1.2/50 p sec full wave

withstand (KV peak)

ii) Impulse test on low voltage winding 1.2/50 p sec full wave

withstand (KV peak)

iii) Wave form for impulse test

21 No load current, no load loss, no load power factor at normal

ratio and frequency (Amp/ KW/ P.F.)

a) 10 percent of rated voltage b) 25 percent of rated voltage c) 50 percent of rated voltage d) 85 percent of rated voltage e) 100 percent of rated voltage f) 105 percent of rated voltage g) 110 percent of rated voltage h) 112.5 percent of rated voltage i) 115 percent of rated voltage j) 120 percent of rated voltage k) 121 percent of rated voltage 22 Efficiency at 75º C at unity power factor a) Full load b) 75% load c) 50% load d) 25% load

23 (a) The minimum percentage of load at which the transformer will

run at maximum efficiency (%)

b) Maximum efficiency of the transformer 24 Regulation at full load at 75º C a) At unity power factor (%) b) At 0.8 power factor (lagging) (%) 25 Core data

a) Grade of core material used

b) Thickness of core plate lamination (mm)

c) Whether core laminations are of HIB cold rolled grain oriented

d) Details of oil ducts in core, if any

i) Whether in the plane & at right angle to the plane of winding

ii) Across the plane of lamination e) i) Insulation of core lamination

ii) Insulation of core plates iii) Type of core joints(Mitred or Mitred Step-lap)

26 Flux density

a) Designed maximum flux density at rated voltage and rated

frequency (Tesla)

b)

Designed maximum operating flux density which the

transformer can withstand for one minute at normal tap

(Tesla)

c)

Designed maximum operating flux density which the

transformer can withstand for five seconds at normal tap

(Tesla)

27 Inter-Tap insulation

a) Extent of extreme end turns reinforcement

b) Extent of end turns reinforcement

c) Extent of turn adjacent to tapping reinforced

d) Test voltage for 10 seconds 50Hz inter-turn insulation test on (a)

e) Test voltage for 10 seconds 50Hz inter-turn insulation test on

(b)

f) Test voltage for 10 seconds 50Hz inter-turn insulation test on (c)

28 Windings: a) Material b) Type of windings:

i) HV windings ii) LV windings

c) Insulation of HV windings d) Insulation of LV windings e) Insulation between HV & LV windings

29 Continuous rating under following conditions:

a) At 40°C ambient air temp. at site b) At 30°C ambient air temp. at site c) At 20°C ambient air temp. at site

30 Transformer Tank a) Material b) Thickness

- Top - Sides - Bottom

c) Details of painting - Inner surface - Outer surface

31 Dimensions of 3 phase transformers: a) Max. Height to top of bushings (mm) b) Over-all length (mm) c) Over-all breadth (mm)

32 Weight data of transformer components : (Tolerance + 5% )

(approximate values not allowed )

a) Core excluding clamping (Kg) b) Core with clamping (Kg)

c) HV winding insulated conductor (Kg)

d) LV winding Insulated conductor (Kg)

e) Coils with insulation (Kg.) f) Core and windings (Kg) g) Weight of steel (Kg) h) Fittings and accessories (Kg)

i) Oil required for first filling including 10% extra (ltrs / Kg )

1. Oil in main tank ( Ltrs)

2. Oil in the conservator (Ltrs) 3. Oil in the radiators ( Ltrs )

4. Oil in the OLTC (Ltrs.) 5. Overall total quantity of oil with 10% extra oil for first

filling (ltrs / Kg)

j) 1. Transportation weight excluding accessories (Kg)

2. Shipping details i) Weight of heaviest package (Kg.) ii) Dimension of largest package (Kg)

k) Untanking weight (Kg)

l) Total weight of transformer with oil and fittings (Kg)

33 Bushing data : a) Type of bushing insulator i) HV ii) LV i i i ) Neutral

b) Material of bushing (inner part / outer part)

c) Weight of bushing insulator (Kg.) d) Quantity of oil in one bushing (lt.)

e) Minimum dry withstand & flash over power frequency voltage of

bushing (KV)

f) Minimum wet withstand & flash over power frequency voltage

of bushing (KV)

g) Minimum withstand & flashover impulse level (KV)

h) Voltage rating (KV) i) Current rating (Amps.) j) Thermal Short Time current & Duration

k) Rated Dynamic current & its duration

l) Cantilever with stand loading m) Clearance in oil

- phase to phase (mm)

- phase to earth (mm)

n) Creepage distance in oil & air (mm)

o) Minimum level of immersing / medium (oil ) (mm)

p) Maximum pressure of immersing medium (oil) Kg/ cm2

q) Free space required at top for removal of bushings (mm)

r) Angle of mounting

34 Details of CT to be provided in the neutral for REF protection.

a) Outdoor bushing type b) No. of cores and their function c) Location (Line / Neutral)

d) Current rating for various cores (Primary / Secondary)

e) VA burden / Knee Point voltage (Core wise)

f) Magnetising current at half knee point voltage. (mA)

g) Classification (PS class) core wise h) Test voltage

i) Construction details

35 Conservator (Main Transformer and OLTC)

a) Total volume of the Conservator (Cub mtr / Ltr.)

b) Volume of the conservator between the highest and lowest level

(Cubic mtr. / Ltrs )

36 Calculated time constants for natural cooling

37 Type of axial coil supports : a) HV winding b) LV winding 38 Details of On Load tap changer

a) Make b) Type c) Rating

i) Rated Voltage i i) Rated current i i i) Step voltage iv) Number of steps

v)Rated Short Circuit Current

d) Whether Diverter switch provided with gas vent and buchholz

relay (Yes / No )

e) Whether a separate oil surge relay with trip contacts provided

(Yes / No)

f) Pressure relief valve

g) Details of motor device unit housed in kiosk / mounted on tap

changer

h)

running

Whether Remote control panel provided with Control scheme

for simultaneous operation of Tap changer when transformers

are

in parallel and independent control when in independent

operation.

i) Details of equipment in the OLTC kiosk j) Details of OLTC panels

i) automatic tap changer relay ii) literature of all the relays iii) dimensions of OLTC, Panel L x B x H

iv) thickness of sheet v) degree of protection vi) details of equipment supplied

39 Dispatch details :

a) Approx. mass of heaviest Package (Kg)

b) Approx. dimensions of largest Package i ) L e n g t h ( m m ) i i ) B r e a d t h ( m m )

i i i ) H e i g h t ( m m ) 40 Un-tanking height (mm)

41 Bimetallic connectors HV / LV

a) Normal current rating (A) b) Short time current rating (A) c) Tensile strength (Kg) d) Maximum temperature limit

e) Dimensional sketch enclosed indicating tolerances (Yes/No)

f) Minimum clearance (mm) - Phase to phase

- Phase to Earth 42CORE

ASSEMBLY :- a) Core diameter (mm ) b) Core window height (mm ) c) Core leg centre (mm ) d) Gross core cross – sectional area (m

2)

e) Total height of core (mm ) f) Details of top end frame g) Details of Bottom end frame

h) Details of clamp plate (material, thickness, insulation)

i) Total core weight (Kg )

j ) Core loss, basing on core loss graph at operating flux density

(rated voltage and rated frequency ) ( KW )

k) Core stacking factor

l) Net core area (Sq.m)

m) Margin towards corner joints, cross-fluxing, dielectric loss

(KW)

n) Total core loss at rated voltage and rated frequency (KW )

o) Describe location / method of core grounding

p) Details of core- belting i) Material , grade and type

ii) Width iii) Thickness iv)Fixing method

43 DETAILS OF WINDING a) Type of winding b) Material of the winding conductor

c) Maximum current density of windings at rated current and

conductor area

d) Whether windings are pre-shrunk ?

e) Whether adjustable coil clamps are provided for HV and LV

windings ?

f) Whether steel rings are used for the windings ? If so, whether

these are split ?

g) Whether electrostatic shields are provided to obtain uniform voltage

distribution in the windings ?

h) Winding Insulation ( Type & Class ) i) Insulating material , used for

i) H.V winding ii) LV winding iii) Tapping connection

j) Insulating material used between i) L.V and H.V winding ii) Core & L.V winding

k) H.V to H.V winding between phases l) Type of axial supports

i) H.V winding ii) L.V winding

m) Type of radial supports i) H.V winding ii) L.V winding

n) Maximum allowable torque on coil clamping bolts

o) Clamping ring details i) Thickness of ring mm

ii) Diameter of ring mm iii) No. & size of pressure screw

p) Bare conductor size (mm) i) HV ii) LV

q) Insulated conductor size (mm) i) HV ii) LV

r) No. of conductor in parallel ( Nos.) i) HV

ii) LV s) No. of turns / phase

i) HV ii) LV

t) No. of discs / phase i) HV ii) LV

u) No. of turns / Disc i) HV ii) LV

v) Gap between discs (mm ) i) HV ii) LV

w) Inside diameter (mm ) i) HV ii) LV

x) Outside diameter (mm ) i) HV ii) LV

y) Axial height after shrinkage (mm ) i) HV ii) LV

z) D.C Resistance i) L.V winding at 75

0 C (Ohms )

ii) H.V winding at normal tap at 750 C (Ohms )

iii) H.V winding at highest tap at 750 C (Ohms )

iv) H.V winding at lowest tap at 750 C (Ohms )

v) Total I2R losses at 75

0 C for normal tap (KW )

vi) Total I2R losses at 75

0 C for highest tap (KW )

vii ) Total I2R losses at 75

0 C for lowest tap (KW )

vii

i)

Stray losses including eddy current losses in winding at 750 C

(KW)

a) Normal tap position b) Highest tap position c) Lowest tap position

d) Any special measures, taken to reduce eddy current

losses and stray losses. Mention in details

ix) Load losses at 750 C (I

2 R + Stray )

a) Normal tap position (KW ) b) Highest tap position (KW) c) Lowest tap position (KW )

x) Details of special arrangement, provided to improve surge voltage

distribution in the windings.

44 DETAILS OF TANK : a) Material of Transformer tank b) Type of tank

c) Thickness of sheet (No approximate value to be mentioned)

i) Sides (mm) ii) Bottom (mm ) i i i) Cover (mm ) iv ) Radiators (mm)

d) Inside dimensions of main tank (No approximation in

dimensions to be used )

i) Length (mm) ii) Breadth (mm) i i i) Height (mm )

e) Outside dimensions of main tank (No approximation in

dimensions to be used )

i) Length (mm) ii) Breadth (mm) i i i) Height (mm)

f) Vacuum recommended for hot oil circulation (torr / mm of Hg)

g) Vacuum to be maintained during oil filling in transformer tank

(torr / mm of Hg)

h) Vacuum to which the tank can be subjected without distortion

(torr / mm of Hg)

i) No. of bi-directional wheels provided

j) Track gauge required for the wheels

i) Transverse axis

ii) Longitudinal axis

k) Type and make of pressure relief device and minimum

pressure at which it operates (Kpa )

45 CONSERVATOR :- a) Thickness of sheet (mm) b) Size (Dia x length ) (mm) c) Total volume (Litres)

d) Volume between the highest and lowest visible oil levels

(Litres)

GTP NO- 9 GUARANTEED AND OTHER PARTICULARS FOR 100kVA STATION TRANSFORMERS

Sl. No. Name of the Particulars Desired Value Bidder's Offer 1 Make 2 Name of Manufacturer 3 Place of Manufacture 4 Voltage Ratio 33/0.4kV 5 Rating in kVA 100kVA 6 Core Material used and Grade:

a) Flux density b) Over fluxing without saturation (Curve to be furnished by the Manufacturer in support of his

claim)

7 Maximum temperature rise of: a) windings by resistance method b) Oil by thermometer

8 Magnetizing (no-load) current at: a) 90% Voltage b) 100% Voltage c) 110% Voltage

9 Core loss in watts: a) Normal voltage b) Maximum voltage

10 Resistance of windings at 20°C,750C

(with 5% tolerance) a) HV Winding (ohms) b) LV Winding (ohms)

11 Load losses (watts) at 75°C at normal tap(100% Load Condition)

12

TOTAL Losses (Load loss +No Load Loss)at 100% load at 75°C at rated Voltage, frequency & at normal tap.

13 Total Losses at 50% load at 75°C

14 Current density used for: (Ampere/sq mm)

a) HV Winding. b) LV Winding.

15 Clearances: (mm) a) Core and LV b) LV and HV c) HV Phase to phase d) End insulation clearance to

earth

e) Any point of winding to tank. 16 Efficiency at 75°C

a) Unity P.F and b) 0.8 P.F. 1) 125°C load 2) 100°C load 3) 75°C load 4) 50°C load 5) 25°C load

17 Regulation at: a) Unit P.F. b) 0.8 P.F. at 75ºC

18 % Impedance at 75ºC 19 Flash test:-

(i) HV 70 kV/ 50HZ for 1 minute (ii) LV 3 kV /50 Hz for 1 minutes.

20 Over potential test (Double voltage and Double frequency for 1 minute)

21 Impulse test. 22 Mass of : (kg)

a) Core lamination (minimum) b) Windings (minimum) c) Tank and fittings d) Oil e) Oil quantity (minimum) (litre) f) Total weight

23 Oil Data:

1) Quantity for first filling (minimum) (litre)

2) Grade of oil used. 3) Maker’s name 4) BDV at the time of filling (kV)

24 Transformer:

1) Overall length x breadth x height (mm x mm x mm)

2) Tank length x breadth x height 3) Thickness of plates for a) Side plate (min) b) Top and bottom plate (min) 4) Conservator Dimensions.

25 Radiation: 1 ) e x c l u d i n g Heat dissipation by tank

walls top and bottom

2) Heat dissipation by cooling tube

3) Diameter and thickness of cooling tube.

4)

Whether calculation sheet for selecting cooling

area to ensure that the transformer is capable

of giving continuous rated output without

exceeding temperature rise is enclosed.

26 Inter layer insulation provided in design for: 1) Top and bottom layer 2) In between all layer 3) Details of end insulation.

4) Whether wedges are provided at 50ºC turns of the HV coil.

27 Insulation materials provided. a) For Conductors 1 HV 2 LV b) For Core. 28 Material and Size of the wire used. HV Dia (mm) Number of conductors in

parallel

Total cross sectional area LV Dia (mm) Number of conductors in

parallel

Total cross sectional area 29 Whether the name plate gives all particulars as required in

tender

30 Particulars of bushings HV/LV 1) Maker’s name 2) Type IS-3347/IS-2099/IS-7421

3) Rating as per IS

4)

Dry power frequency voltage withstand test

5)

Wet power frequency voltage withstand test.

Note: The following shall be specifically confirmed: 1) Whether the offer conforms to the limits of impedance mentioned in the specification. 2) Whether the offer conforms to the limits of temperature rise mentioned in the specification. 3) Whether the losses of the transformers offered are within the limits specified.

4) Whether the transformer offered is already type tested for the design and test reports enclosed.

Sl. No. Description To be specified by Bidders

1 Core Grade 2 Core diameter(mm)

3 Gross core area(Sq cm)

4 Net core area(Sq cm)

5 Flux density(Tesla)

6 Mass of core(Kg)

7 Loss per kg of core at the specified flux density(watt)

8 Core window height(mm)

9 Center to enter distance of the core(mm)

10 No.of LV Turns

11 No.of HV turns

12

Size of LV conductor bare/covered (mm)

13

Size o HV conductor bare/covered (mm)

14 No. of parallels

15 Current density of LV winding.(A/sq mm)

16 Current density of HV winding.(A/sq mm)

17 Wt. of the LV winding for Transformer (kg)

18 Wt. of the HV winding for Transformer (Kg)

19 No. of LV Coils/phase 20 No. of HV Coils/phase 21 Height of LV Winding.(mm) 22 Height of HV Winding.(mm) 23 ID/OD of HV winding(mm) 24 ID/OD of LV winding(mm) 25 Size of the duct in LV winding(mm)

26 Size of the duct in HV winding(mm)

27 Size of the duct between HV and LV(mm)

28 HV winding to LV winding clearance(mm)

29 HV winding to tank clearance(mm) 30 Calculated impedance(%)

31 HV to earth creepage distance(mm)

32 LV to earth creepage distance(mm)

GTP NO – 10 GUARANTEED TECHNICAL PARTICULARS of Transformer OIL

SL. NO. Name of the

Particulars Desired Value Bidder's Offer

1 Appearance

Clear and transparent free from suspended matter or sediments.

2 Density at 29.5° C (Max) gm/cc

0.89

3 Viscosity, Kinematic at 27° C (Max)

27

4 Interfacial Tension at 27° C (Min) Newton / M

0.04

5 Flash point, Pensky Marten (closed) in °C (min). 140

6 Pour point in ° C (Max) -6

7 Neutralisation value

a) Total acidity, mg KOH/gm (Max)

0.03

b) Inorganic acidity / alkalinity Nil

8 Corrosive sulphur (Copper strip) 19 hours at 140°C

Non corrosive

9 Electric strength (Breakdown Voltage ) KV (rms).

a) New unfiltered oil (min). 60

b) After filteration (min). 60

10 Dielectric dissipation factor (Tan Delta) at 90°C (Max).

0.002

11 Specific resistance (resistivity)

a) at 90° C , ohm-cms (Min) 35 x 1012

b) at 27° C , ohm-cms (Min) 1500 x 1012

12 Oxidation stability.

a) Neutralisation value, after

Oxidation for 164 hours at 100°C mg KOH/gm (Max).

0.4

b) Total sludge, after 164

hours at 100°C wt. % (max). 0.1

13

Ageing characteristics after accelerated Ageing (open beaker method with copper Catalyst) for 96 hours at 115°C

a) Specific resistance(resistivity)

i) at 27°C, ohm-cms (Min) 2.5 x 1012

i) at 90°C, ohm-cms (Min) 0.2 x 1012

b) Dielectric dissipation factor (Tan Delta ) at 90°C, , ohm- cms (Min)

0.2

c)Total acidity, mg KOH/gm (max)

0.05

d) Total sludge value, Wt. % (max)

0.05

14 Presence of oxidation inhibitor The oil shall not contain anti oxidant additives.

15 Water content, ppm (max) 20

16

i) Proportion of classes of hydrocarbons in the crude oil including content of aromatic hydrocarbons.

ii) Details of barrel (Size, gauge inside/outside coating/weight of empty drum not less than 18 Kg.)

iii) List of equipments for testing of oil as per revised ISS

iv)Electric strength(breakdown voltage ) KV (Min)

a) Value of the fresh sample in the supplied sealed drums KV(Min).

b) Value after filling in transformer upto & within 3 months (Min)

Page No-1 of 2 / HG FUse 33 kV

GTP NO-11 GUARANTEED TECHNICAL PARTICULARS FOR 33kV , 200 AMP, 3 POLE, H.G. FUSE

Sl. No.

Name of the Particulars Desired Value Bidder’s

Offer

1 Maker's name and country or origin To be specified by the tenderer .

2 Suitable for mounting Horizontal only.

3 Number of supporting post insulator

per phase 4 nos. 22KV/24KV Post Insulator

per phase as per ISS - 2544/ 1973

4 Post Insulator

(a) Maker's name and country or orgin To be specified by the tenderder.

(b) Type of cemeting To be quoted original cemented only.

(c ) One minute power frequency

withstand voltage dry 80 KV RMS

(d) One minute power frequency

withstand voltage wet. 70 KV RMS.

(e) Visible discharge voltage 27 KV RMS

(f) Dry Flashover Voltage To be specified by the tenderder.

(g) Power frequency puncture withstand

voltage 1.3 times of actual dry flash over voltage.

(h) Impulse withstand voltage(Switching

Position) 170KV (peak)

(I ) Creepage distance

380mm minimum. (actual creepage distance for which type test have been conducted is to be

specified by the bidder )

5

Impulse withstand voltage for positive and negative polarity (1.2/50 micro

second wave)

(a) Across the isolating distance 195 KV (peak) (b) To earth & between poles 170 KV (peak)

6 One minute power frequency

withstand voltage

(a) Across the isolating distance 80 KV (RMS) (b) To earth & between poles 70 KV (RMS)

7 Rated normal current and rated

frequency. 200 amps, 50 Hz , 3 Pole

8 Operating Voltage 33 KV

9 Vertical clearance from top of

insulator cap to mounting Channel 508 mm (minimum)

10 Height of the riser for carrying the

horns. 250mm from the cap (top) of

insulator.

11 Details of Arcing Horns

Copper rod having 8.32 mm dia Silver-plated provided with

screwing arrangement for fixing use wire made of copper casting.

(Total length 995mm). All the bolts, nuts and washers should be

made out of brass.

12 Riser Unit (a) The shape of connectors may be

made of straight copper Flat of

(250mm total height).

(b) 170mm height G.I. Riser made

of 25mm nominal bore medium gauge G.I. Pipe welded with 2 nos. G.I. Flat of 35 x 5 mm at both ends

fixed with 10mm dia stainless

steel, bolts and nuts with flat stainless steel spring washers.

13 Supporting Channels 100 x 50 x 6 mm M.S. Channel

(galvanized)

14 Galvanisation

All ferrous parts should be galvanized as per IS-2633/1 972 & all non-ferrous part should be duly

electroplated with silver.

15 Weight of each pole (complete) To be specified by the tenderder.

Page No-1 of 4 / HG FUSE11 kV

GTP NO-12 GUARANTEED TECHNICAL PARTICULARS FOR 11kV 200 AMP, 3 POLE, H.G. FUSE .

Sl. No.

Name of the Particulars Desired Value Bidder’s Offer

1 Maker's name and country or origin

2 Suitable for mounting Horizontal only.

3 Number of supporting post insulator

per phase 2 nos. 12KV Post Insulator per phase as

per ISS -2544/ 1973

4 Post Insulator

(a) Maker's name and country or orgin To be specified by the tenderer.

(b) Type of cementing To be quoted original cemented only.

(c ) One minute power frequency

withstand voltage dry 28 KV RMS

(d) One minute power frequency

withstand voltage wet. 28 KV RMS


(e) Visible discharge voltage 9KV RMS

(f) Dry Flashover Voltage To be specified by the tenderer.

(g) Power frequency puncture withstand

voltage 1.3 times of actual dry flash over voltage.

(h) Impulse withstand voltage(Switching

Position) 75KV (peak)

(I ) Creepage distance

380mm minimum. (actual creepage distance for which type test have been

conducted is to be specified by the bidder )

5 Impulse withstand voltage for

positive and negative polarity (1.2/50 micro second wave)

(a) Across the isolating distance 85KV (peak)

(b) To earth & between poles 75 KV (peak)

6 One minute power frequency

withstand voltage

(a) Across the isolating distance 32 KV (RMS)

(b) To earth & between poles 28 KV (RMS)


7 Rated normal current and rated

frequency. 200 amps, 50 Hz , 3 Pole

8 Operating Voltage 11 KV

9 Vertical clearance from top of

insulator cap to mounting Channel 254 mm (minimum)

10 Height of the riser for carrying the

horns. 150mm from the cap (top) of insulator.

11 Details of Arcing Horns

Copper rod having 7.62 mm dia Silver- plated provided with screwing

arrangement for fixing use wire made of copper casting. (Total length 635mm). All

the bolts, nuts and washers should be made out of brass.


12

Riser Unit

(a) The shape of connectors may be made of straight copper Flat of size adequate

enough to carry a current density not less

than 1.5 Amp/ mm2. 2 Nos of 3/8” G.I. Bolts, double nuts, plain and spring

washers and 2 nos. solder less bimetallic shockets per each connector suitable up

to 100 mm2 AAA conductor.

(250mm total height).

(b) 100mm height G.I. Riser made of 19mm nominal bore medium gauge G.I.

Pipe welded with 2 nos. G.I. Flat of 30 x 5 mm at both ends fixed with 10mm dia stainless steel, bolts and nuts with flat

stainless steel spring washers.

13 Supporting Channels 75 x 40 x 6 mm M.S. Channel

(galvanized)

14 Galvanisation All ferrous parts should be galvanized as per IS-2633/1972 & all non-ferrous part should be duly electroplated with silver.

15 Weight of each pole (complete) To be specified by the tenderer.

Page No-1 of 2 / 33kV Isolator

GTP NO- 13 GURANTEED TECHNICAL PARTICULARS OF ISOLATOR(33kV)

Sl.No Name of the Particulars Desired Value Bidder's Offer

1 Main switch Double end break Centre post rotating, gang operated

2 Service Outdoor

3 Applicable standard IS : 9921 / IEC-129/IEC-62271-102

4 Pole 3 pole gang operator

5 Rated voltage nominal/ Maximum 33/36 kV

6 Rated Frequency 50 Hz (+5% to -3%)

7 System earthing Effectively earthed

8 Temperature rise As per relevant IS/IEC publication

9 Insulation level impulse with stand voltage

a) Across Isolating distance 195 kVpeak


b) To earth & between poles 170 kVpeak

10 1 minute power frequency withstand voltage

a) Across Isolating distance 80 kVpeak

b) To earth & between poles 70 kVpeak

11 Rated current in Amp 1250

12 Short time current for 3 sec 25kA

13 Operating mechanism Motorised

14 Auxiliary voltage 33kV

a) Control & Inter lock 48 DC 80% to 110%

15 Safe duration of overload


a)150% of rated current 5 minute

b)120% of rated current 30 minute

16 Minimum creepage distance of support and Rotating insulator

900mm

i) Mounting structure Upright on G.I structure

ii) Terminal connector type Bimetallic clamp

iii) Control Local

ch- e-16 gtp content - optcl e-16 – gtp content 40 11 kv b&s insulator 41 lt distribution box...

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