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Medium voltage switchgear
NEX 24 kVWithdrawable circuit breaker
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ART.70290 04-2006
AMTED303038EN
2006-SchneiderElectric-Allrightsreserved
Schneider Electric Industries SAS
As standards, specifications and designs develop from time to time, always ask
for confirmation of the information given in this publication.
Publishing: Schneider ElectricDesign: Graphme
Printing:
This document has been
printed on ecological paper
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ContentsNEX range1 to 24 kV
Presentation 2NEX: versatile 2
NEX: Schneider Electric licenced product design 3NEX: Merlin Gerin products inside 4
NEX 24 range 9Description 9Protection of people 13General characteristics 14
Cubicle description 15IF Incomer and Feeder 15BC Bus Coupler 16RF Bus Riser Fixed 17RW Bus Riser Withdrawable 18BM Busbar Metering 19FS Fuse Switch feeder 20
Installation 21Connections 21Implementation example 22
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NEX: versatilePresentation
For over 45 years, Schneider Electric has provided medium voltage electricalnetwork protection, monitoring and control solutions in the public distribution,industry and building sectors.
NEX units 24 kV switchboard
NEX is indoor, metal-enclosed switchgear designed for the MV section of HV/MVand MV/MV substations.NEX is a medium voltage equipment comprising cubicles with breaking devices,sensors, medium voltage connections and auxiliaries.
For all your applications:
b industrial substations,b infrastructure supply substations.
NEX offers you:
b flexible and adapted solutions,b the experience of a major electrical manufacturer,b
dedicated engineering.
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The switching devices are of the vacuum withdrawable type.NEX design takes into account three categories of users requirements:
b reliability
vtype testing was carried out for each performance level in the NEX range,
vmaintenance limited to simple, routine operating checks and cleaning,and greasing every 5 to 10 years.
b simplicity
va user interface which is easily understood by everybody,vinterlocks and padlocks preventing operator errors,veasy installation due to identical civil engineering dimensions for all cubicles.
b safety of operation personnel
voperations are all performed from the front, including access to connectionsand busbars,vracking in and out is only possible with the door closed,vinternal arc withstand developed for all functional units,vone single anti-reflex handle is used for all NEX operations.
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NEX: Schneider Electric licencedproduct design
Presentation
CertificationThe type certificate of conformity guarantees that the product:b has been subjected to type testing according to standardised procedures(ISO/IEC 17025) in approved laboratories by independent organisations,b is in conformity with recognised international standards.
For NEX, certification has been carried out by EN 45011 approved externalorganisations, members of the STL (Short-circuit Testing Liaison).
Conformity with standardsAll the different cubicles have been tested in accordance to the latestIEC publication:b 62271-200 (previously 60298) and 60694 relating to construction of mediumvoltage switchgear and controlgear assemblies,b 62271-100 (previously 60056) relating to construction of medium voltagecircuit breakers,b 62271-102 high voltage alternating current disconnectors and earthing switches.
Merlin Gerin designNEX design has been achieved thanks to full up to date means such as computer
aided design software, synthetic laboratories, simulation of behaviour...
NEX is designed according to the best practices in terms of installation, operationand maintenance:breliability: the user benefits from the progress provided by expertise developedby Schneider Electric in the area of operating dependability for more than 45 years,bsimplicity: little effort is required for local manual operations, icon-illustratedinstructions on each front panel make the operating sequence and switching devicestatus very simple to understand,
bsafety: very comprehensive set of mechanical and electrical interlocks preventsoperator errors.
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MT20066
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NEX: Merlin Gerin products insidePresentation
Evolis vacuum circuit breakers from 1 to 24 kVEvolis circuit breaker is used to protect and control MV public or industrial
distribution network.b Rated voltage 24 kV.b Short circuit breaking capacity up to 25 kA.b Rated normal current from 630 A to 2000 A.b Axial magnetic field (AMF) breaking technology.
b Withdrawable version.
The Evolis circuit breaker equips cubicles IF and BC at ratings of up to 24 kV.
High electrical enduranceA magnetic field is applied in the axis of the vacuum interrupter contacts.This process maintains the arc in diffused mode even at high current values.It ensures optimal dispersion of the energy over the contact surface and avoidslocalised temperature rise.
The advantages of this technique are:b a very compact vacuum interrupter,b low energy dissipation of the arc in the vacuum interrupters.Evolis is in conformity with the highest electrical endurance class(IEC 62271-100: class E2).
High mechanical enduranceThe magnetic field is generated by a patented internal coil which surroundsthe contact area. This solution has many advantages:b a simplified and therefore reliable vacuum interrupter unit,b heavy duty contacts which do not distort under repeated switching operations.The RI control unit used on Evolis has the advantages of a system which has beenproven for 20 years in thousands of installations.Evolis is in conformity with the most demanding mechanical endurance class(IEC 62271-100: class M2).
Operating mechanism descriptionEvolis range circuit breakers are actuated by a RI type operating mechanism,that ensures a switching device closing and opening rate that is independentof the operator.This operating mechanism, which can be motorised, can perform remote controlfunctions and enables fast reclosing cycles.This operating mechanism includes mechanical devices:b an energy storage mechanism stores the energy required in the springs,to close and then to open the device,b a manual lever-controlled arming device,b a mechanical opening and closing device using two push buttons situated
on the front circuit breaker panel which are accessible with the cubicle door open(circuit breaker in the test position).For the door closed control unit (circuit breaker racked in): the circuit breaker canbe opened by controlling the propulsor unit.
The reliability and dependability ofa cubicle is also assumed by the internal
components, producing between thema coherent architecture.This technology provides users withthe best guarantee of continuity of servicefor their installations.
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NEX: Merlin Gerin products inside(cont.)
Presentation
Each NEX functional unit can be equippedwith a comprehensive protection,
monitoring and control system comprising:b instrument transformers to measure thenecessary electrical values (phase current,residual current, voltages, etc.),b protection relays, providing functionsadapted to the part of the network to beprotected,b metering equipment, to inform operators,b low voltage relaying, i.e. to providecontrol of the breaking device andof the withdrawable part,
b various auxiliaries: secondary circuit testunits, etc.
Sepam: protection, monitoring and control unitsSepam, is a range of digital monitoring protection and control units.Sepam is at the centre of the protection, monitoring and control system for NEXfunctional units: all the necessary protection, metering, control, monitoring andsignalling functions are carried out by Sepam.
Like the NEX range, the Sepam range is a range of units defined to providean optimal solution for each application, and includes (eg):
b Sepam S, substation incomer and feeder,b Sepam B, bussectioning,b Sepam T, transformer feeder,b Sepam G, generator feeder.
Protection chainThe Sepam protection units combined with innovative current sensors providea comprehensive measurement, protection and energy management chain.
A high performance, economical solution
The modular Sepam offer provides a cost effective solution tailored to every
requirement.Easy to order and installAll the components in the protection chain are referenced and can be deliveredvery quickly.
The power of a multi-functional digital unit
Sepam is more than a simple protection relay, it is truly multi-functional unit notablyoffering:b circuit breaker diagnosis functions (switching counter and time, rearming time,cumulated broken A2),b direct circuit breaker control whatever type of release unit,b remote equipment operation using the modbus communication option.The Sepam will operate with Low Power Current Transducers (LPCT) as definedby standard IEC 60044-8.
Sepam advantages
Reliability
b Over 20 years of experience in multi-function digitalprotection relays.b Over 150,000 Sepam units in service in more than
90 countries.Quality
b Quality design based on dependability studiesand strict definition of environmental constraints:temperature, pollution, EMC, dielectric strengthb Quality manufacturing based on procurementagreements with suppliers and inspection throughoutall manufacturing phases.
Simplicity of use
b Ergonomic and intuitive user machine interface(UMI).b User friendly and powerful PC setting software.
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NEX: Merlin Gerin products inside(cont.)
Presentation
Sepam series 20, series 40, selection guide
Sepam Protections ApplicationsBasic Specific Substation Transfo Motor Generator Busbar
Sepam series 20
b 10 logic inputs
b 8 relay outputs
b 8 temperature probe inputs
b 1 Modbus communication
port
DE51730 Current
protectionS20 T20 M20
DE51731 Voltage and
frequency
protection
B21
Loss of mains
(ROCOF)B22
Sepam series 40
b 10 logic inputs
b 8 relay outputs
b 16 temperature probe inputs
b 1 Modbus communication
port
b logic equations editor
DE51732 Current,
voltage andfrequency
protection
S40 T40 G40
Directionalearth fault
S41 M41
Directional
earth fault
and phaseovercurrent
S42 T42
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NEX: Merlin Gerin products inside(cont.)
Presentation
Instrument transformers
Voltage transformers
b measuring, metering and monitoring devices,b relays or protective devices,b auxiliary LV sources for various types of switchgear.
All these devices are protected and insulated from the MV section.They are in conformity with standard IEC 60044-1.Schneider Electric has drawn up a list of voltage transformers which are appropriatefor use with digital protection devices.They are installed at the bottom of the functional unit. The energized partis entirely encapsulated in an epoxy resin, which provides both electrical insulationand excellent mechanical strength.
Current transformers
Conventional current transformers are used to provide power to metering,measuring or control devices. They measure the value of primary current from 10 Ato 2500 A. They are in conformity with standard IEC 60044-2.Schneider Electric has drawn up a list of current transformers which are
appropriate for use with digital protection devices in order to make it easierto determine accuracy characteristics.They are installed in the rear par t of the functional unit. The energized part isentirely encapsulated in an epoxy resin, which provides both electrical insulationand excellent mechanical strength.
LPCT low power current transducer
LPCTs are specific current sensors with a direct voltage output of the Low PowerCurrent Transducer type, in conformity with standard IEC 60044-8.LPCTs provide metering and protection functions.They are defined by:b the rated primary currentb the extended primary current
b the accuracy limit primary current or the accuracy limit factor.These have a linear response over a large current range and do not start tosaturate until beyond the currents to be broken.
Earthing switchAn earthing switch is used to earth and short-circuit the cable ends before workis performed on the cable connection compartment.In a VT functionnal unit, the earthing switch is used to earth the busbar of theswitchboard. This switch, with a making capacity, complies with IEC 60271-102and comprises:b a fast-acting closing mechanism independent of the operator,b a locking device which stops it from being operated until the circuit breakerhas been opened and withdrawn,b 3 voltage capacitive dividers incorporated into the insulators which support theterminal plates, and connected to the VPIS mounted on the front plate, to indicatewhether the cables are live or not.
Voltage Presence Indicator System (VPIS)The VPIS, combined with the capacitive divider insulators of the power circuit unit,provides an indication by lights of the voltage presence on each phase of the maincircuit.The voltage presence indicator unit is installed on the front of the earthing switchoperating mechanism box.The voltage presence indicator unit covers two voltage ranges, in accordance
with standard IEC 61958:b 10 to 24 kV.
LPCT
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DE56604
Voltage transformer with fuse
DE56603
Current transformer
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NEX: Merlin Gerin products inside(cont.)
Presentation
Power monitoring and control power monitoring deviceThe PowerLogic Power Meter is a cost effective, high performance meter.
It can operate as a stand alone device or as part of the power monitoring andcontrol system from Schneider Electric: the PowerLogic system (contact us formore information).bEssential power monitoring:v revenue-class; accuracy 0.2% current/voltage,
v on-board memory for energy consumption analysis,v on-board clock/calendar for time/date stamping.bApplication flexibility:v separate meter and display modules,
v direct-connect up to 600 V: higher voltages with PTs.
Other devices, such as the PowerLogic Circuit Monitor, are available for MV and LVnetworks. Main functions include comprehensive power monitoring, power qualityanalysis and recording and optional input, output control.
Low voltage Schneider Electric componentsIntegration of standardised Merlin Gerin and Telemecanique componentsin the LV compartment.Example:b LV circuit breakers cover all ratings from 1 to 100 A,b push-button,b rotary switch,
b light signal,b photoelectric sensors.
FusesMerlin Gerin fuses provide protection to medium voltage distribution devices(from 3 to 36 kV) from both the dynamic and thermal effects of short-circuit currents
greater than the fuses minimum breaking current.Considering their low cost and their lack of required maintenance, medium voltagefuses are an excellent solution to protect various types of distribution devices:medium voltage current consumers (transformers, motors, capacitors, etc.),public and industrial electrical distribution networks.
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DescriptionNEX 24 range
LV control cabinet
Sepam
Voltagetransformers
area (option)
Cables
connection
Current
transformers
Busbars
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Circuit breaker
LPCT
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Make up of a NEX 24 switchboardNEX 24 switchboards are made up of several interconnected functional units.
Power connections are made between functional units within a switchboard viaa single busbar.The electrical continuity of all metal frames is provided by the connectionof each functional units earthing busbar to the switchboards main earthing circuit.Low voltage wiring trays are provided in the switchboard above the LV controlcabinets.LV cables can enter the switchboard through the top or bottom of each functional unit.
Description of a functional unitA functional unit comprises all equipment in the main and auxiliary circuitswhich together provide a protection function. Each functional unit combinesall the components which are required to fulfil this function:b the cubicle,
b the protection, monitoring and control system,
b the withdrawable part.
The cubicleAs defined by IEC standard 62271-200, the functional unit is of LSC2B-PM type(low of service continuity category). The medium voltage parts are compartmentedusing metallic partitions (PM class) which are connected to ear th and whichseparate:b the busbars,b the withdrawable part (circuit breaker, disconnector truck or earthing truck),b MV connections, earthing switch, current sensors and voltage transformersas required.NEX 24 guarantees a high level of protection of people; when a compartmentcontaining a main circuit is open, the other compartments and/or functional units
may remain energised.The low voltage auxiliaries and monitoring unit are in a control cabinet separatedfrom the medium voltage section.Six basic cubicle layouts are offered:
b Incomer or Feeder IFb Bus Coupler BCb Bus Riser Fixed RFb Bus Riser Withdrawable RW
b Busbar Metering BMb Fuse Switch feeder FSIF and BC cubicles have withdrawable circuit breaker.
The protection, monitoring and control systemThis includes:
b voltage transformers,b Sepam, protection, monitoring and control unit,b current sensors, which may be of 2 types:v conventional current transformers (DIN),v LPCT (Low Power Current Transducer).
The withdrawable partThis includes:b the circuit breaker, the ear thing truck with its closing and opening mechanism,or the disconnector truck,b the lever-type propulsion mechanism for racking in-out,
b interlocks to fix the withdrawable part on the fixed part either in service positionor disconnected.
Description (cont.)NEX 24 range
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Description (cont.)NEX 24 range
Protection indexb IP3X for the enclosure (option for IP4X),b IP2X between each compartment.
Constructionb internal arc withstand (classification IAC): AFLR,b
3 compartments (classification LSC2B-PM according to IEC 62271-200),b all the metal surfaces in the panels are corrosion proof,b panels are produced using hot dipped galvanisation steel sheet in accordanceto ISO 3575 or electro zinc coated steel sheet in accordance to ISO 5002,b busbar insulated.
Connectionsb front and/or rear access,b conductor entry from below.
Rated voltage (kV)
24
Rated insulation level
Power frequency withstand voltage50 Hz - 1 min (r ms kV)
50
Lightning impulse withstand voltage
1.2/50 s (kV peak)
125
Nominal current and maximum short time withstand current
Functionnal unit with circuit breaker
Short time withstand current Ith. max (kA/3 s) 16
25
Rated current In max busbars (A) 2000
In CB (A) 630
1250
2000Internal arc withstand (option)
IAC-AFLR (kA/1 s) 25
Technical data
IAC (internal arc classification):The metal enclosed switchgear mayhave different types of accessibilityon the various sides of its enclosure.For identify purpose of different sides ofthe enclosure, the following code shall
be used (according to IEC 62271-200standard).A: restricted access to authorizedpersonnel onlyF: access to the front sideL: access to the lateral sideR: access to the rear side
LSC2B (lost of service continuity):This category define the possibilityto keep other compartments energisedwhen opening a main circuit compartment.
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Description (cont.)NEX 24 range
Operating conditionsNormal operating conditions, according to IEC 60694 for indoor switchgearb
ambient air temperature:v less than or equal to 40C,v less than or equal to 35C on average over 24 hours,v greater than or equal to 5C.b altitude:
v less than or equal to 1000 m,v above 1000 m, a derating coefficient is applied (please consult us).b atmosphere:v no dust, smoke or corrosive or inflammable gas and vapor, or salt(clean industrial air).b humidity:v average relative humidity over a 24 hour period y 95%,v average relative humidity over a 1 month period y 90%,v average vapor pressure over a 24 hour period y 2.2 kPa,v average vapor pressure over a 1 month period y 1.8 kPa.
Storage conditionsIn order to retain all of the functional units qualities when stored for prolongedperiods, we recommend that the equipment is stored in its original packaging,in dry conditions sheltered from the sun and rain at a temperature of between 25C and + 55C.
StandardsThe NEX 24 range meets the following international standards:b IEC 62271-1: clauses common to high voltage switchgear,b IEC 62271-200: metal-enclosed switchgear for alternating currentat rated voltages of between 1 and 52 kV,b IEC 62271-100: high voltage alternating current circuit breakers,b IEC 62271-103: switches for rated voltages above 1 kV and less than 52 kV,b IEC 60282-2: high voltage fuses,
b IEC 62271-102: alternating current disconnectors and earthing switchesb IEC 60529: defining the protection indices provided by enclosures.
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Protection of peopleNEX 24 range
Withdrawable unit and earthingComposed of:b
withdrawable circuit breaker,b complete cradle equipped with metallic safety shutters and dedicated bushings,b earthing switch with making capacity,b LV connector between LV control cabinet and CB auxiliaries.
InterlockingThe cubicle integrates the different interlocking to prevent incorrect operationby the operator.NEX secures operation to:b access the cable compartment,b rack in and out,b operate the earthing switch,b open the CB door.
Safetyb General structure that allows gas evacuation pressure reliefs device.b Each compartment is designed with a specific chimney for upward gasevacuation.
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General characteristicsNEX 24 range
PresentationThe NEX range comprises 6 functional applications.
The table below can be used to link requirements to functional unitsand gives basic information on the general composition of each unit.
Single line diagram Designation Function See details page
DE56611
IF
Incomer and FeederConnection to incomeror feeder lines
14
DE56612
BCBus Coupler
Coupling of two busbarssystems
15
DE56613
RFBus Riser - Fixed type
Solid busbar link to be usedin association with a BC unit
16
DE56614
RWBus Riser - Withdrawable type
Withdrawable busbar link(sectionalizing truck) to beused in association with
a BC unit
17
DE56615
BMBusbar Metering
Connection VT to the busbarfor metering
18
DE56610
FSFuse Switch feeder
Connection to feeder linesto protect a transformer
19
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IFIncomer and Feeder
Cubicle description
Rated voltage (kV)
24
Rated insulation levelPower frequency withstand voltage50 Hz - 1 min ( rms kV)
50
Lightning impulse withstand voltage
1.2/50 s (kV peak)
125
Rated current (A) 630 b b
1250 b b
2000 b b
Breaking capacity (kA) 16 b b b
25 b b b
Short time
withstand current
(kA/3 s) 16 b b b
25 b b b
Dimensions (mm)
Width (W) 800 800 800 800 1000 1000
Height (H) 2300
Depth (D) 1750
Functions
b Low voltage cabinet
b Circuit breaker
v Evolis range - vacuum technology
b Voltage transformers
v with withdrawable fuses
v fixed with fuses
b Earthing switch
b Voltage indication (VPIS)
b MV cables connection
v bottom entry
b Current transformers
v 3 MV type
v LPCT
b Surge arresters
b Anticondensation heaters
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BCBus Coupler
Cubicle description
Rated voltage (kV)
24
Rated insulation levelPower frequency withstand voltage50 Hz - 1 min ( rms kV)
50
Lightning impulse withstand voltage
1.2/50 s (kV peak)
125
Rated current (A) 1250 b b
2000 b b
Breaking capacity (kA) 16 b b
25 b b
Short time
withstand current
(kA/3 s) 16 b b
25 b b
Dimensions (mm)
Width (W) 800 800 1000 1000
Height (H) 2300Depth (D) 1750
Functions
b Low voltage cabinet
b Circuit breaker
v Evolis range
b Voltage indication (VPIS)
b Current transformers
v 3 MV typev LPCT
b Anticondensation heaters
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DE56586
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RFBus Riser Fixed
Cubicle description
Rated voltage (kV)
24
Rated insulation levelPower frequency withstand voltage50 Hz - 1 min ( rms kV)
50
Lightning impulse withstand voltage
1.2/50 s (kV peak)
125
Rated current (A) 1250 b b
2000 b b
Short time
withstand current
(kA/3 s) 16 b b
25 b b
Dimensions (mm)
Width (W) 800 800 800 800
Height (H) 2300
Depth (D) 1750
Functions
b Low voltage cabinet
b Voltage transformers
v withdrawable fusedv fixed fused
b Anticondensation heaters
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DE56588
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RWBus Riser Withdrawable
Cubicle description
Functions
b Low voltage cabinet
b Withdrawable link truck
b Voltage transformers
v withdrawable fusedv fixed fused
b Anticondensation heaters
v voltage indication (VPIS)
DE56589
DE56590
Rated voltage (kV)
24
Rated insulation levelPower frequency withstand voltage50 Hz - 1 min ( rms kV)
50
Lightning impulse withstand voltage
1.2/50 s (kV peak)
125
Rated current (A) 1250 b b
2000 b b
Short time
withstand current
(kA/3 s) 16 b b
25 b b
Dimensions (mm)
Width (W) 800 800 1000 1000
Height (H) 2300
Depth (D) 1750
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BMBusbar Metering
Cubicle description
Functions
b Low voltage cabinet
b Voltage transformers
v withdrawable fusedv fixed fused
b Earthing switch
b Voltage indication (VPIS)
b Anticondensation heaters
DE56591
DE56592
Rated voltage (kV)
24
Rated insulation levelPower frequency withstand voltage50 Hz - 1 min ( rms kV)
50
Lightning impulse withstand voltage
1.2/50 s (kV peak)
125
Rated current (A) 1250 b b
2000 b b
Short time
withstand current
(kA/3 s) 16 b
25 b
Dimensions (mm)
Width (W) 800 800
Height (H) 2300
Depth (D) 1750
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FSFuse Switch feeder
Cubicle description
Rated voltage (kV)
24
Rated insulation levelPower frequency withstand voltage50 Hz - 1 min ( rms kV)
50
Lightning impulse withstand voltage
1.2/50 s (kV peak)
125
Rated current (A) 200 b
Breaking capacity (1) (kA) 25 b
Short time
withstand current (1)(kA r ms) 25 b
Dimensions (mm)
Width (W) 800
Height (H) 2300
Depth (D) 1750
(1) Limited by fuses
Functions
b Low voltage cabinet
b Switch
v SM6 type SF6 technology
b Earthing switch (integrated to the switch)
b Voltage indication (VPIS)
b MV cables connection
v bottom entry
b Anticondensation heaters
SM6 switchThe three rotating contacts are placed in an enclosure filled with gas to a relativepressure of 0.04 MPa (0.4 bars).The SF6 filled enclosure is of the sealed pressure system type. Sealing tightnessis always checked in the factory.
b Safety
vthe switch may be in one of three positions: closed, open or earthed,giving a natural interlocking system that prevents operator error.Moving contact rotation is driven by a fast acting mechanism that is independentof the operator.vthe device combines the breaking and disconnecting functions.
vthe earthing switch has a short-circuit making capacity in compliancewith standards.
Operating mechanism and auxiliariesCI2 double function operating mechanism
b Switch function:
vindependent closing in two steps: operating mechanism recharged by a hand lever or motor, stored energy released by a push button or trip unit,vindependent opening by push button (O) or trip unit.
b Earthing switch function:
vindependent closing by a hand lever.Operating energy is provided by the compression of a spring which causesthe contacts to close or open after the neutral point is passed.
DE56593
DE56594
E74222
041497R
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ConnectionsInstallation
Switchgear resistance to ageing in a substation depends on3 key factors
b The need for correctly made connectionsNew cold connecting technologies offer easy installation and favour durabilityin time. Their design means they can be used in polluted environments with harshatmospheres.b The impact of relative humidity
The installing of a heating element is essential in climates with high relativehumidities and significant temperature differentials.b Ventilation control
The dimensions of air vents must be appropriate for the dissipated energyin the substation. They must only sweep across the transformer environment.
Cold connected terminalsSchneider Electrics experience has led it to favour this technology whereverpossible for optimum durability.The maximum acceptable cable cross-section for standard assemblies are:b630 mm2 for incomer or feeder cubicles with single-pole cables;b
400 mm2
for incomer or feeder cubicles with three-pole cables;b95 mm2 for transformer protection cubicles with fuses.Access to the compartment is only possible when the earthing switch is closed.Tightening torques for cables will be attained using a dynamo wrench set to 50 mN.
Dry, single core cable
Short end piece, cold connectable
Performance 3 to 24 kV - 400 A - 2000 A
Cross section mm2 50 to 630 mm2
Supplier all suppliers of cold connectable terminals:Silec, 3M, Pirelli, Raychem...
Number of cables 1 to 2 per phase (630 A)1 to 3 per phase (1250 A)1 to 4 per phase (2000 A)
Comments for greater cross section and number of cables,please consult us
Dry, three core cable
Short end piece, cold connectable
Performance 3 to 24 kV - 400 A - 2000 A
Cross section mm2 50 to 400 mm2
Supplier all suppliers of cold connectable terminals:Silec, 3M, Pirelli, Raychem...
Number of cables 1 per phase (630 A/1250 A)
1 to 3 per phase (2000 A)Comments for greater cross section and number of cables,
please consult us
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Implementation exampleInstallation
3000 *
Space for MV cables Space for LV cables (if required)
Access to the premises
4000 *
20 times cable diameter *
600 *
1810 *
(*) Minimum dimensions
Line up switchboard
Civil engineering with utility space
600
600
800
2 feeders cubicle
IF
3 feeders cubicle
IF
Incomer cubicle
IF
Incomer cubicle
IF
Bus coupler
BC
Bus riser
RF
800 1000 1000 800 1000
1400
800 800 800 600
DE56595
DE56596
Note: for further information, refer to the civil engineering guide,user and instruction manual.
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Notes
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Notes