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MV switchboard

2004Catalogue

NEX Merlin Gerin17.5 kV

Schneider Electric 1

General contents

Overview 2versatile 2closer to you 4Schneider Electric licensed product design 5Merlin Gerin inside 6

Description 8technical data 9functions 10

Application 12normal operating conditions 12

Technical leaflet 14IF Incoming & Feeder 630A, 1250A & 2500A 14C coupler 1250A & 2500A 16R riser 1250A & 2500A 18VT Busbar Voltage Transformer 20

Schneider Electric2

NEX: versatile

Where to use NEX? For over 45 years, Schneider Electric has provided Medium Voltage electrical network protection, monitoring and control solutions in the public distribution, industry and building sectors.

NEX is indoor, metal-enclosed switchgear designed for the MV section of HV/MV and MV/MV substations.

b The switching devices are of the metalclad withdrawable type. NEX design takes into account three categories of users requirements:v reliability necessary for continuity of power supplyv simple installation, operation and maintenancev safety of operation personnel.

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461

200

460

Overview


NEX: versatile

b Typical HV/MV substation, general installationv flexible and adapted solutionsv industrialized solutionsv dedicated engineering.

2004

00

2004

0106

103

7N

b NEX units 12 kV/17.5 kV switchboard.Medium voltage equipment comprising cubicles with breaking devices, sensors, medium voltage connections and auxiliaries.

Overview

Schneider Electric4

NEX: closer to you

How does NEX meet your needs? Local requirementsb NEX is based on a modular structure for cubicle, designed to meet:v local requirements v local standards.

Quick responseb NEX target to offer:v fast response to requests for quote and tenderv optimal solutions with advanced features.

Schneider supportb NEX design is dedicated to be manufactured locally with full support from Schneider Electric:v technicalv industrialv quality controlv process.

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05

Overview


NEX: Schneider licensed product design

What guarantees does NEX provide? Certificationb The type certificate of conformity guarantees that the product:v has been subjected to type testing according to standardised procedures (ISO/IEC 17025) in approved laboratories by independent organisationsv is in conformity with recognised international standards.

b For NEX, certification has been carried out by EN 45011 approved external organisations, members of the STL (Short-circuit Testing Liaison).

Conformity with standards b All the different cubicles have been tested in accordance to the latest IEC publication: v 62271-200 (previously 60298) and 60694 relating to construction of medium voltage switchgear and controlgear assemblies.

Schneider designb NEX design has been achieved thanks to full up date means such as computer aided design software, synthetic laboratories, simulation of behaviour…

b NEX is designed according to the best practices in terms of installation, operation and maintenance:v reliability: the user benefits from the progress provided by expertise developed by Schneider Electric in the area of operating dependability for more than 40 yearsv simplicity: little effort is required for local manual operations, icon-illustrated instructions on each front panel make the operating sequence and switching device status very simple to understandv safety: very comprehensive set of mechanical and electrical interlocks prevents operator errors.

PE

4003

9

2004

07

Overview

Schneider Electric6

NEX: Schneider Electric products inside

The reliability and dependability of a cubicle is also assumed by the internal components; producing between them a coherent architecture. This technology provides the users with the best guarantee of continuity of service for their installations.

Evolis vacuum circuit breakersfrom 1 to 17.5 kVEvolis circuit breaker is used to protect and control MV public or industrial distribution network.

b Rated voltage 7.2 kV/12 kV and 17.5 kV.

b Short circuit breaking capacity from 25 kA to 40 kA.

b Rated normal current from 630 A to 2500 A.

b Axial magnetic field (AMF) breaking technology.

b Withdrawable version.

Earthing Switchb An earthing switch is used to earth and short-circuit the cable ends before work isperformed on the cable connection compartment; this switch, with a making capacity, complies with IEC 60271-102 and comprises:v a fast-acting closing mechanism independent of the operatorv a locking device which stops it from being operated until the circuit-breaker has been opened and withdrawnv 3 voltage capacitive dividers incorporated into the insulators which support theterminal plates, and connected to three neon indicators mounted on the front plate, to indicate whether the cables are live or notv Voltage Presence Indicating Systems (VPIS) in compliance with IEC 61958.

PE

4000

52

0017

3Overview


NEX: Schneider Electric products inside

Which technology does NEX use ? Protection chainThe Sepam (serie 20, 40 or 80) protection units combined with innovative current sensors provide a comprehensive measurement, protection and energy management chain.

b A high performance, economical solutionThe modular Sepam offer provides a cost effective solution tailored to every requirement.

b Easy to order and installAll the components in the protection chain are referenced and can be delivered very quickly.

b The power of a multifunctional digital unitSepam is more than a simple protection relay, it is truly multifunctional unit notably offering:v circuit-breaker diagnosis functions (switching counter and time, rearming time, cumulated broken A2)v direct circuit-breaker control whatever type of release unitv remote equipment operation using the modbus communication option.

The Sepam will operate with Low Power Current Transducers (LPCT) as defined by standard IEC 60044-8.

Power monitoring and control power monitoring deviceb The 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 and control system from Schneider Electric: the PowerLogic system (contact us for more information).

v Essential power monitoring- revenue-class; accuracy 0.2 % current/voltage,- on-board memory for energy consumption analysis,- on-board clock/calendar for time/date stamping,

v Application flexibility- separate meter and display modules,- direct-connect up to 600 V: higher voltages with PTs.

b Other devices, such as the PowerLogic Circuit Monitor, are available for MV and LV networks. Main functions include comprehensive power monitoring, power quality analysis and recording and optional input, output control.

Low voltage Schneider Electric componentsIntegration of standardised Merlin Gerin and Telemecanique components in the LV compartment.

b Example:v LV circuit breakers cover all ratings from 1 to 100 Av push-buttonv rotary switchv light signalv photoelectric sensors.

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3010

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0040

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5

Overview

Schneider Electric8

Notes

Description


Technical data

b Degree of protectionv IP3X for the enclosure in accordance with IEC 60529.v IP2X between each compartment.

b Constructionv compartments (classification LSC2B-PI according to IEC 62271-200)v all the metal surfaces in the panels are treated against corrosion v panels are produced by hot dipped galvanisation sheet steel in accordance to ISO 3575 or electro zinc coated sheet steel in accordance to ISO 5002v paint: epoxy powder polymerised at high temperaturev plastic components: self-extinguishing.

2004

10A

LV control cabinet

circuit-breaker compartment

busbar compartment

cable compartment

Description

Schneider Electric10

Functions

Withdrawable unit and earthingb Composed of:v withdrawable circuit breakerv complete cradle equipped with metallic safety shutters and dedicated bushingsv earthing switch with making capacityv LV connector between LV control cabinet and CB auxiliaries.

InterlockingThe cubicle integrates the different interlocking to prevent incorrect operation by the operator.

b NEX secures operation to:v access the cable compartmentv rack in and outv operate the earthing switchv open the CB door.

Protection control and commandb Sepam is a multifunctional digital protection unit with 4 main applications :v substation: S typev transformer: T typev motor: M typev busbar: B type.

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411A

200

412A

200

413A

Description


Functions

Cable connection compartmentb This compartment is easily accessible from the front and the back of the panel:v connection by cables or barsv connection entry from the top or the bottomv voltage transformersv current transformers:- MV block CTs- MV Low Powered CTs (max 1250A)- LV Torroidal CTs on MV insulated screened primary bar (max 1250A)

Busbar compartmentWith flat copper bars and no fragile parts, this compartment requires no special maintenance under normal operating conditions.

b Options:v partitioning between each cubiclev insulated busbars and junctions.

Safetyb General structure that allows gas evacuation pressure reliefs device.

b Each compartment is designed with a specific chimney for upward gas evacuation.

2004

14A

2004

15A

2004

16A

Description


Normal operating conditions

According to IEC 60694:for indoor switchgearb Ambient air temperaturev less than or equal to 40°Cv less than or equal to 35°C on average over a 24-hour periodv greater than or equal to - 5°C.

b Altitudev less than or equal to 1000 mv above 1000 m, a derating factor is applied: please consult us.

b Atmospherev ambient air not significantly polluted by dust, smoke, corrosive or inflammable gas and vapour, or salt.

b Humidityv average relative humidity over a 24-hour period less than or equal to 95%v average relative humidity over a 1-month period less than or equal to 90%

b Vibrationsv vibrations due to causes external to the switchgear or to earthquakes are negligible.

Application


Notes

Description


NEX ... Merlin GerinIF Incoming & Feeder630A, 1250A & 2500ALicensed by Schneider Electric

0610

32N

PresentationNEX ... is indoor, metalclad switchgear designed for the MV section of HV/MV substations and MV/MV substations.The switching devices are of the metalclad withdrawable type.

StandardsNEX ... complies with the main international standards:b IEC 62271-200 and 60694 relating to construction of medium voltage switchgear and controlgear assemblies,b IEC 60529 defining the degrees of protection provided by enclosures.

Construction b metal frame: folded sheet metal,b paint: epoxy powder polymerised at high temperature,b plastic components: self-extinguishing in particular the supports for bare live conductors.

Connectionsb front and/or rear access,b conductor entry from top or bottom.


NEX ... Merlin GerinIF Incoming & Feeder630A, 1250A & 2500A

5122

6950

Performance, characteristicsBasic cubiclerated voltage (kV) Ur kV rms 12 17.5rated insulation voltagerated power-frequency withstand voltage (50 Hz 1mn) Ud kV rms 28 38rated lighting impulse withstand voltage (1.2/50 micro s) Up kV peak 75 95(*)standard degree of protection enclosure (FU) IP3X

compartment IP2X

Circuit breakerrated short-circuit breaking current Isc kA rms

(3s)25 31,5

**25 31.5

**rated normal current In A rms 630 630 630 630

1250 1250 1250 12502500 2500 2500 2500

Busbarsrated normal current max In A rms 2500 2500 2500 2500

(*) 800/900 mm cubicles only(**) only 800/900 mm cubliclesInternal arc (option) consult us

DimensionsRating dimensions (mm) H W D

top entry bottomnon internal arc internal arc

630/1250 A 2320 650 2195* 1595 1780630/1250 A 2320 800 2195* 1595 17802500 A 2320 900 2295* 1595 1780

*maximum

Functionsb Low voltage compartmentv Schneider Electric design, standard heightv local design, special adaptation

b Circuit-breakerv Evolis range

b Voltage transformersv withdrawable fusedv fixed unfusedv fixed fused

b Earthing switch

b Voltage indication

b Cables connectionv bottom entryv top entry

b Current transformersv 3 MV typev 6 MV typev 3 MV low powered CTs (up to 1250A)v LV torroidal CTs on MV primary bar (up to 1250 A)

b Surge arrestors

b Heaters.

NEX


NEX ... Merlin GerinC coupler1250A & 2500ALicensed by Schneider Electric

0610

29N





NEX ... Merlin GerinC coupler1250A & 2500A

5122

6954


compartment IP2X

Circuit breakerrated short-circuit breaking current Isc kA rms

(3s)25 31.5

**25 31.5

**rated normal current In A rms 630 630 630 630

1250 1250 1250 12502500 2500 2500 2500

Busbarsrated normal current max In A rms 2500 2500 2500 2500

(*) 800/900 mm cubicles only(**) 31,5 kA only 800/900 mm cubliclesInternal arc (option) consult us

Dimensions

rating dimensions (mm)

H W Dnon internal arc internal arc

1250 A 2320 650 1595 17801250 A 2320 800 1595 17802500 A 2320 900 1595 1780

Functions

b Low voltage compartmentv Schneider Electric design, standard heightv local design, special adaptation

b Circuit-breakerv Evolis range

b Current transformersv MV low powered CTs (up to 1250A)v 3 MV type

b Surge arrestors

b Heaters

b Voltage indication.


NEX ... Merlin GerinR riser1250A & 2500ALicensed by Schneider Electric

0610

30N





NEX ... Merlin GerinR riser1250A & 2500A

5122

6958

Performance, characteristics

Basic cubiclerated voltage (kV) Ur kV rms 12 17.5rated insulation voltagerated power-frequency withstand voltage (50 Hz 1mn) Ud kV rms 28 38rated lighting impulse withstand voltage (1.2/50 micro s) Up kV peak 75 95(*)standard degree of protection enclosure (FU) IP3X

compartment IP2X

Busbarsrated normal current max In A rms 2500 2500

(*) 800/900 mm cubicles onlyInternal arc (option) consult us

Dimensions

rating dimensions (mm) H W D

non internal arc internal arc

1250 A 2320 650 1595 17801250 A 2320 800 1595 17802500 A 2320 900 1595 1780

Functions

b Low voltage compartmentv Schneider Electric design, standard heightv local design, special adaptation


b Heaters.


NEX ... Merlin GerinVT Busbar Voltage TransformerLicensed by Schneider Electric

0610

31N





NEX ... Merlin GerinVT Busbar Voltage Transformer


compartment IP2X

Busbarsrated normal current max In A rms 2500 2500

(*) 800/900 mm cubicles onlyInternal arc (option) consult us

Dimensionsdimensions (mm)H W D

Non internal arc internal arc

1595 650 1595 17802320 800 1595 1780

Functionsb Low voltage compartmentv Schneider Electric design, standard heightv local design, special adaptation


b Earthing switch

b Voltage indication

b Surge arrestors

b Heaters.


Notes

Description

Schneider Electric Industries SASPostal address Due to the changes in standards and equipment, the characteristics given in the text and Electrical Distribution Communication images of this document can only be considered as binding after confirmation by the F-38050 Grenoble Cedex 9 relevant departments in our company.Tel : +33 (0)4 76 57 60 60http://www.schneider-electric.com

Rcs Nanterre B 954 503 439 Publishing : Schneider Electric SADesign : HeadLines

ART.41184 05/2004

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mv switchboard - 3c engineering3cengineering.com.vn/image/data/doitac/gd.pdf · vt busbar voltage...

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