Catalog Nex 24kV withdrawable circuit breaker

Catalog Nex 24kV withdrawable circuit breaker
Medium Voltage Distribution
NEX 24 kV
Withdrawable vacuum circuit breaker
Catalogue
June 2008
A new path for achieving your electrical installations
A comprehensive offer
The NEX 24 range is part of a comprehensive offer of products that are perfectly
coordinated to meet all medium and low voltage electrical distribution requirements.
All of these products have been designed to work together: electrical, mechanical
and communication compatibility.
The electrical installation is thus both optimised and has improved performance:
@ better service continuity,
@ increased personnel and equipment safety,
@ guaranteed upgradeability,
@ efficient monitoring and control.
You therefore have all the advantages at hand in terms of know-how and creativity
for achieving optimised, safe, upgradeable and compliant installations.
Tools for facilitating the design and installation
With Schneider Electric, you have a complete range of tools to help you get to know and
install the products whilst complying with current standards and good working practices.
These tools, technical sheets and guides, design software, training courses, etc are
regularly updated.
Schneider Electric is associating itself with
your know-how and your creativity to produce
optimised, safe, upgradeable and compliant
installations
For a real partnership with you
A universal solution doesn’t exist because each electrical installation is specific.
The variety of combinations on offer allows you to truly customise the technical solutions.
You are able to express your creativity and put your know-how to best advantage
when designing, manufacturing and exploiting an electrical installation.
NEX range
1 to 24 kV
Contents
Presentation
Field of application
Continuity of service and complete safety
NEX 24, a comprehensive solution
Quality assurance - environment
AMTED306006EN.indd
4
4
5
6
9
NEX 24 range
Description
Technical characteristics
Operating conditions
Protection of people
Choice of functional units
10
10
12
13
14
15
Cubicle description
IF Incomer and Feeder
ID Incomer Direct to busbar
BC Bus Coupler
RF Bus Riser Fixed
RW Bus Riser Withdrawable
BM Busbar Metering
LB-QM Fuse Switch feeder
LB-IM Switch
LB-TM MV/LV transformer unit for auxiliaries
17
17
18
19
20
21
22
23
24
25
Protection, monitoring and control
Protection system
Sepam series 20, series 40, series 80, Sepam 100
Instrument transformers
26
26
27
29
Switchgear
Withdrawable parts
LB switch cubicle
31
31
35
Installation
Connections
Implementation example
37
37
39
Appendix
Cubicle equipment
40
40
3
Field of application
Presentation
PE56220
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 24 units 24 kV switchboard
NEX 24 is indoor, metal-enclosed switchgear designed for the MV section
of HV/MV and MV/MV substations.
NEX 24 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.
PE55692
PE56222
PE56221
NEX 24 offers you:
b flexible and adapted solutions
b the experience of a major electrical manufacturer
b dedicated engineering.
An enhanced offer with vacuum type
switchgear
The NEX 24 offer is further enhanced to include a vacuum type circuit
breaker (Evolis range).
This switchgear offers you:
b high mechanical and electrical endurance
b a comprehensive range of performance levels
b optimal operating safety
b environmental protection.
4
AMTED306006EN.indd
Presentation
Continuity of service
and complete safety
PE57121
NEX 24 is solidly based on extensive experience acquired throughout
the world and provides your networks with a high level of dependability
and safety.
NEX 24 integrates a host of innovative solutions designed around proven
techniques: high performance switchgear, digital protection, monitoring
and control systems, enclosures capable of withstanding internal arcing.
From its very conception, NEX 24 has taken account of three key user
requirements:
Reliability
b type testing was carried out for each performance level in the NEX 24
range.
b the design, manufacturing and testing of NEX 24 was carried out
according to ISO 9001: 2000 quality standard.
b three-dimensional computer modeling techniques were used to study
the electrical fields.
Simplicity
PE56386
b a user interface which is easily understood by everybody.
b interlocks and padlocks preventing operator errors.
b Sepam-type protection units enabling on-site information retrieval
without any additional devices.
b maintenance limited to simple, routine operating checks and cleaning
and greasing every 5 to 10 years.
b easy installation due to identical civil engineering dimensions for
all cubicles and installation being possible against a wall.
Safety
b operations are all performed from the front, including access to
connections and busbars.
b racking in and out is only possible with the door closed.
b the power-on indicator is situated on the front of the functional unit.
b the earthing switch has making capacity.
b one single ‘‘anti-reflex” handle is used for all NEX 24 operations.
b internal arc withstand developed for all functional units.
AMTED306006EN.indd
5
Presentation
NEX 24,
a comprehensive solution
PE57021
NEX 24 provides the most efficient means to control and protect a wide
range of applications.
Due to the devices it comprises, NEX 24 can be easily integrated into
a monitoring and control system.
Sepam protection and control units
Sepam series 20, series 40 and series 80 digital protection relays take full
advantage of Schneider Electric experience in electrical network
protection.
Sepam series 20, series 40 and series 80 provides all the necessary
functions:
b effective protection of people and property
b accurate measurements and detailed diagnosis
b integral equipment control
b local or remote indication and operation.
Easy evolution
PE57123
Addition of communication, digital I/O’s, analog output, or temperature
acquisition are possible due to its modular design.
PowerMeter and Circuit Monitor metering units
MT20055
The PowerLogic PowerMeter replaces a full complement of basic analog
meters. This cost effective, high performance meter provides a full
complement of accurate true-rms metering values.
The PowerLogic series 3000/4000 Circuit Monitor is designed for critical
power users and large energy consumers, to provide the information
needed to confidently enter the evolving world of deregulation.
It can be adapted to meter almost any time-of-use or real-time rate.
Monitoring and control
NEX 24 can be easily:
b integrated into an existing monitoring and control system:
communication of Sepam digital relay or PowerMeter/Circuit Monitor
metering device through a standard protocol (Modbus)
b integrated into a SMS PowerLogic electrical installation monitoring
system.
6
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NEX 24,
a comprehensive solution (cont.)
PE55137
Presentation
NEX 24 Transparent Ready™ option
DE57492EN
NEX 24 switchboards integrate Web technologies so that you can
find out information about your electrical installation as easy as opening
a Web page.
All you need is a standard Web browser and a PC connected to your local
area network.
TCP/IP over Ethernet
Hub
Front socket
EGX400
Simple choice
A simple choice between TRe-1 and TRe-2 service levels allows you
to easily order your Transparent Ready™ NEX 24 switchboard.
A customized level is also available.
Your Transparent Ready™ NEX 24 switchboard comes equipped with
a Web server including Web pages dedicated to power equipment data.
Sepam
Sepam
CM/PM
Easy commissioning
Transparent Ready™ equipment is delivered ready to connect and
commission.
A Quick Start guide, packaged with your switchboard, provides three easyto-follow steps.
NEX 24 switchboard
Functionalities provided
PE55140
PE55139
PE55138
TRe-1 TRe-2
AMTED306006EN.indd
Instantaneous readings
Displays automatically updated meter values
b
b
Circuit summary
Displays the RMS current 3-phase average (A),
the real power (kW), the power factor, the circuit breaker
status (if applicable), etc.
b
b
Load current summary
Displays the current RMS value for each phase (A),
for all circuits
b
b
Demand current summary
Displays the average demand current value for each phase (A),
for all circuits
b
b
Power summary
Displays the present demand (kW), the peak demand (kW)
and the times and dates of the records
b
b
Energy summary
Displays the energy (kWh) the reactive energy (kvarh),
and the times and dates of the records
b
b
Instantaneous readings, all devices
Displays automatically updated meter values
for all the communicating devices in the equipment
b
Basic historical data logging, energy and trending
Displays automatically updated meter values
for all the communicating devices in the equipment
b
Log displays
Displays data as time curves, or tables
b
Export of data tables
Allows data tables to be exported in a standard
Windows format
b
7
NEX 24,
a comprehensive solution (cont.)
MT20064
Presentation
Modernizing
Specifying
Schneider Electric Services, by your side
throughout the life of your installation
Specifying
We help you to define your solutions: selection guide,
technical assistance, advice…
Implementing
We oversee the completion and commissioning of your installation:
design, cost optimization, guaranteed performances and dependability,
commissioning tests, etc.
Operating
Implementing
Operating
We help run your daily operations in real time: maintenance contract,
technical assistance, supply of replacement parts, corrective and
preventive maintenance, operation and maintenance training, etc.
Modernizing
We can bring the performance of your installation up to date:
installation audit, switchgear diagnosis, adaptation and modification,
end of life recycling, etc.
Examples of services provided
MT20065EN
Warranty extension
A warranty extension is proposed if your installation is checked
by ourselves before being commissioned.
Circuit breaker-contactor diagnosis
Throughout the life of the equipment, it is possible to carry out routine
measurement of its characteristics in order to optimize maintenance.
This service may be part of a global installation maintenance contract.
End-of-life recycling
Schneider Electric Services has an operational subsidiary allowing you
to recycle your medium voltage switchgear.
8
AMTED306006EN.indd
PE40039
Presentation
Quality assurance - Environment
Certified quality: ISO 9001
A major asset
In each of its units, Schneider Electric integrates a functional organization
whose main role is to check quality and monitor compliance with standards.
This procedure is:
b uniform throughout all departments
b recognized by many customers and approved organizations.
But above all, it is its strict application that has allowed us to obtain
the recognition of an independent organization:
The French Quality Assurance Association (AFAQ).
The quality system for the design and manufacture of NEX 24
is certified to be in conformity with the requirements of ISO 9001:
2000 quality assurance standard.
Strict and systematic checks
PE56211
During manufacture, each NEX 24 functional unit is subject to systematic
routine testing with the aim of checking the quality and conformity
of the following features:
b measuring of opening and closing speeds
b measuring of operating torque
b dielectric test
b testing of safety systems and interlocks
b testing of low voltage components
b conformity with drawings and diagrams.
The results obtained are recorded and approved by the quality control
department on each device’s test certificate.
This therefore guarantees product traceability.
PE56733
Control of vacuum interrupters
Each vacuum interrupter, sealed and airtight, is checked for the quality of
the vacuum obtained. This pressure measurement is based on the proven
“magnetron discharge” method.
Using this sophisticated procedure, measurement is very precise
and does not require access to the inside of the bulb, thus not affecting
the airtight seal.
Protected environment
As part of the group’s environmental policy, Schneider Electric Services
provides you with an operational subsidiary to recover medium voltage
switchgear and thus eliminate any discharge to atmosphere.
In order to help you protect the environment and to relieve you of any
concerns in terms of stock or dismantling, Schneider Electric Services
offers to take back your equipment at the end of its life.
NEX 24 has been designed with environmental protection in mind:
b the materials used, insulators and conductors are identified,
easily separable and recyclable.
b the SF6 can be recovered at the end of the equipment’s life and reused
after treatment.
b production sites are certified to ISO 14001.
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9
Description
PE57122
NEX 24 range
Busbars
LV control cabinet
Sepam
LPCT
Circuit breaker
Current
transformers
Earthing switch
Cables
connection
Voltage
transformers
area (option)
10
AMTED306006EN.indd
NEX 24 range
Description (cont.)
Make up of a NEX 24 switchboard
NEX 24 switchboards are made up of several interconnected functional units.
Power connections are made between functional units within a switchboard via
a single busbar.
The electrical continuity of all metal frames is provided by the connection
of each functional unit’s earthing busbar to the switchboard’s main earthing circuit.
Low voltage wiring trays are provided in the switchboard above the LV control
cabinets.
LV cables can enter the switchboard through the top or bottom of each functional unit.
Description of a functional unit
A functional unit comprises all equipment in the main and auxiliary circuits
which together provide a protection function. Each functional unit combines
all the components which are required to fulfil this function:
b the cubicle
b the protection, monitoring and control system
b the withdrawable part.
The cubicle
LSC2B
(Loss of Service Continuity IEC 62271-200):
this category defines the possibility
of keeping other compartments energised
(in service) when opening a main circuit
compartment.
As defined by IEC standard 62271-200, the functional unit is of LSC2B-PM type
(loss of service continuity category). The medium voltage parts are compartmented
using metallic partitions (PM class) which are connected to earth and which separate:
b the busbars
b the withdrawable part (circuit breaker, disconnector truck or earthing truck)
b MV connections, earthing switch, current sensors and voltage transformers
as required.
NEX 24 guarantees a high level of protection of people; when a compartment
containing 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 separated
from the medium voltage section.
Seven basic cubicle layouts are offered:
b Incomer or Feeder
IF
b Incomer Direct to busbar
ID
b Bus Coupler
BC
b Bus Riser Fixed
RF
b Bus Riser Withdrawable
RW
b Busbar Metering
BM
b Switch
LB
IF and BC cubicles have withdrawable circuit breaker.
RW has withdrawable link truck.
The protection, monitoring and control system
This 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 part
This includes:
b the circuit breaker, the earthing 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 position or
disconnected.
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11
NEX 24 range
Technical characteristics
PE57124
Technical data
Rated voltage
(kV)
24
Power frequency withstand voltage
50 Hz - 1 min
(r ms kV)
50
Lightning impulse withstand voltage
1.2/50 µs
(kV peak)
125
Rated insulation level
Nominal current and maximum short time withstand current (1)
Functional unit with circuit breaker
Short time withstand current
Ith. max
(kA/3 s)
16
Rated current
In max busbars
(A)
2000
In CB
(A)
630
25
1250
2000
Functional unit with switch-fuse (LB cubicle)
IAC (internal arc classification):
The metal enclosed switchgear may
have different types of accessibility
on the various sides of its enclosure.
For identify purpose of different sides of
the enclosure, the following code shall be
used (according to IEC 62271-200
standard).
A: restricted access to authorized personnel
only
F: access to the front side
L: access to the lateral side
R: access to the rear side.
12
Short time withstand current
Ith. max
(kA)
25 (2)
Rated current
In max y
(A)
630
(kA/1 s)
25
Internal arc withstand
IAC-AFLR
Protection degree
IP3X or IP4X external
IP2X internal between
compartments
(1) For functional units equipped with circuit breakers or fuse-contactors,
the breaking capacity is equal to the short time withstand current.
In all cases, the device peak making capacity is equal to 2.5 times
the short time withstand current.
(2) Limited by fuses.
AMTED306006EN.indd
NEX 24 range
Operating conditions
PE56236
Operating conditions
PE56237
Normal operating conditions, according to IEC 62271-1 for indoor switchgear
b Ambient air temperature:
v less than or equal to 40°C
v less than or equal to 35°C on average over 24 hours
v greater than or equal to – 5°C.
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.
Specific operating conditions (please consult us)
NEX 24 has been developed to meet the following specific conditions:
b temperature (possible derating)
b corrosive atmospheres, vibrations, (possible adaptation).
PE56238
Storage conditions
In order to retain all of the functional unit’s qualities when stored for prolonged
periods, 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 – 25°C
and + 55°C.
Standards
The NEX 24 range meets the following international standards:
b IEC 62271-1: clauses common to high voltage switchgear
b IEC 62271-100: high voltage alternating current circuit breakers
b IEC 62271-102: alternating current disconnectors and earthing switches
b IEC 62271-103: switches for rated voltages above 1 and less than 52 kV
b IEC 62271-200: metal-enclosed switchgear for alternating current
at rated voltages of between 1 and 52 kV
b IEC 60282-2: high voltage fuses
b IEC 60255: measurement relay and protection unit
b IEC 60044-1: current transformers
b IEC 60044-2: voltage transformers
b IEC 60529 : defining the protection indices provided by the enclosures.
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13
NEX 24 range
Protection of people
DE56358
NEX 24 internal arc
NEX 24 is designed to withstand and protect operators in the case of failure
due to an internal arc.
NEX 24 has been successfully tested using type tests.
4-sided internal arc protection
A NEX 24 switchboard is installed in the middle of a room.
Internal arc protection on 4 sides is necessary in order to protect an operator
who goes behind the cubicle.
Internal arc version
NEX 24 is designed to withstand and protect operators in the case of failure due to
an internal arc.
NEX 24 has been successfully tested using type tests.
Protection against internal arcing is available on 25 kA ratings.
NEX 24 proposes one option to install an internal arc switchboard.
b 4-sided internal arc protection
In the case of a NEX 24 switchboard installed in the middle of a room, internal arc
protection on 4 sides is necessary in order to protect an operator who goes behind
the cubicle.
b Installation in a room with ceiling height > 4 m
b Internal arcing detector
NEX 24 has 2 systems that can detect internal arcing and switch off the power
supply so as to limit the fault duration.
v electromechanical detector
This system employs a positive security electromechanical tripping circuit,
positioned on the cubicle roof flaps.
This set transmits the information to the Sepam to give the opening order to the
circuit breaker located upstream of the fault.
v optic detector (VAMP system): please contact us
Internal arcing is detected by optical sensors which will measure the light caused by
the initiation of arcing. Based on this information, an electronic module, after
processing the information, will give the opening order to the circuit breaker located
upstream of the fault.
PE57120
Dependable mechanical control devices
All operations are carried out from the front face.
The user is guided through icon-diagrams on each front panel making it easy
to understand the operating sequence and device status. Interlocks and padlocks
prevent operator errors.
Several additional levels of security also protect operators:
b racking in and out is only possible with the door closed.
b the very extensive set of mechanical and electrical interlocks do not allow operator
error. These can be added to by key locks or padlocks according to specific
operating procedures. Each selector can be fitted with one to three padlocks.
b all operations are carried out from the front face.
b the voltage present indicator is located on the front face of the functional unit,
in the immediate vicinity of the earthing switch control.
b disarming of circuit-breaker when racking out. This function enables the circuit
breaker control springs to be disarmed during the extraction operation.
14
AMTED306006EN.indd
Choice of functional units
NEX 24 range
The NEX 24 range comprises 11 functional applications.
The table below can be used to link requirements to functional units and gives basic
information on the general composition of each unit.
Selection guide
You want to supply power to a transformer.
The chosen solution is a transformer feeder/breaker.
The corresponding functional unit will therefore be a TF-B,
comprising a cubicle equipped with a withdrawable circuit breaker,
and transformer application Sepam.
Incomer
Feeder
Transformer
Generator
Line
Transformer
Transformer
LI-B
TI-B
GI-B
LI
LF-B
TF-B
TF-S
Cubicle
IF
IF
IF
ID
IF
IF
LB
Device
Circuit breaker
Circuit breaker
Circuit breaker
–
Circuit breaker
Circuit breaker
Fuse-switch
Sepam protection relay
series 20
series 40
series 80
Substation
S20
S40, S41, S42
S80, S81, S82
Transformer
T20
T40, T42
T81, T82, T87
Generator
–
Substation
S20
S40, S41, S42
S80, S81, S82
Transformer
T20
T40, T42
T81, T82, T87
Transformer
T20
T40, T42
Single line
diagrams
MT20081
DE58384
Sepam
AMTED306006EN.indd
G40
G82, G88, G87
MT20082
Line
Functional unit
MT20080
Function
Sepam
15
Choice of functional units (cont.)
NEX 24 range
Bussectioning
Metering and
busbar earthing
Substation
BS-B
SS-B
BB-V
Cubicle
IF
BC and
RF (or RW)
IF
BM
Device
Circuit breaker
Circuit breaker
Circuit breaker
Sepam protection relay
series 20
series 40
series 80
Capacitor
Busbar
B21, B22
C86
B83
Substation
S20
S40, S41, S42
S80, S81, S82
Single line diagrams
MT20078
Switchboard
CB-B
MT20081
Capacitor
Functional unit
DE58375
Feeder
MT20081
Function
Sepam
16
AMTED306006EN.indd
Cubicle description
IF
DE56584-IF
Incomer and Feeder
Rated voltage
(kV)
24
Rated insulation level
Power frequency withstand voltage
50 Hz - 1 min ( rms kV)
50
Lightning impulse withstand voltage
1.2/50 µs (kV peak)
125
Rated current
(A)
630
b
b
b
1250
b
b
2000
Breaking capacity
(kA)
Short time
withstand current
(kA/3 s)
Dimensions
(mm)
16
b
b
b
b
b
25
16
b
b
b
b
25
b
b
b
b
Width (W)
800 800 800 800 1000 1000
Height (H)
2300
Depth (D)
1750
DE56617
Functions
b Low voltage cabinet
b Circuit breaker
v Evolis range - vacuum technology
b Voltage transformers
v fused withdrawable
v fused fixed
b Earthing switch
b Voltage presence indicator
b MV cables connection
v bottom entry
v top entry
b Current transformers
v 3 MV type
v LPCT
b Surge arresters
b Anticondensation heaters
AMTED306006EN.indd
17
Cubicle description
ID
DE58385_ID
Incomer Direct to busbar
Rated voltage
(kV)
24
Rated insulation level
Power frequency withstand voltage
50 Hz - 1 min ( rms kV)
50
Lightning impulse withstand voltage
1.2/50 µs (kV peak)
125
Rated current
(A)
1250
b
b
2000
b
b
Width (W)
800
1000
Height (H)
2300
Depth (D)
1750
Short time
withstand current
(kA/3 s)
Dimensions
(mm)
25
DE58386
Functions
b Low voltage cabinet
b Voltage transformers
v fused withdrawable
v fused fixed
b Earthing switch
b Voltage presence indicator
b MV cables connection
v bottom entry
v top entry (please consult us)
b Current transformers
v 3 MV type
b Surge arresters
b Anticondensation heaters
18
AMTED306006EN.indd
Cubicle description
BC
DE56585_BC
Bus Coupler
Rated voltage
(kV)
24
Rated insulation level
Power frequency withstand voltage
50 Hz - 1 min ( rms kV)
50
Lightning impulse withstand voltage
1.2/50 µs (kV peak)
125
Rated current
(A)
1250
b
b
b
2000
Breaking capacity
(kA)
Short time
withstand current
(kA/3 s)
Dimensions
(mm)
16
b
b
25
16
b
b
b
b
25
Width (W)
800
Height (H)
2300
Depth (D)
1750
b
b
800
b
1000
1000
DE58374
Functions
b Low voltage cabinet
b Circuit breaker
v Evolis range
b Voltage presence indicator
b Upstream voltage transformers
v fused withdrawable
v fused fixed
b Current transformers
v 3 MV type
v LPCT
b Anticondensation heaters
AMTED306006EN.indd
19
Cubicle description
RF
DE56587_RF
Bus Riser Fixed
Rated voltage
(kV)
24
Rated insulation level
Power frequency withstand voltage
50 Hz - 1 min ( rms kV)
50
Lightning impulse withstand voltage
1.2/50 µs (kV peak)
125
Rated current
(A)
1250
b
b
b
2000
Short time
withstand current
(kA/3 s)
Dimensions
(mm)
16
b
b
25
Width (W)
800
Height (H)
2300
Depth (D)
1750
b
b
800
b
800
800
DE58387
Functions
b Low voltage cabinet
b Voltage transformers
v withdrawable fused
v fixed fused
b Anticondensation heaters
b Earthing switch
b Voltage presence indicator
20
AMTED306006EN.indd
Cubicle description
RW
DE56589_RW
Bus Riser Withdrawable
Rated voltage
(kV)
24
Rated insulation level
Power frequency withstand voltage
50 Hz - 1 min ( rms kV)
50
Lightning impulse withstand voltage
1.2/50 µs (kV peak)
125
Rated current
(A)
1250
b
b
b
2000
Short time
withstand current
(kA/3 s)
Dimensions
(mm)
16
b
b
25
Width (W)
800
Height (H)
2300
Depth (D)
1750
b
b
800
b
1000
1000
DE58388
Functions
b Low voltage cabinet
b Withdrawable link truck
b Voltage transformers
v withdrawable fused
v fixed fused
b Anticondensation heaters
b Earthing switch
b Voltage presence indicator
AMTED306006EN.indd
21
Cubicle description
BM
DE56591_BM
Busbar Metering
Rated voltage
(kV)
24
Rated insulation level
Power frequency withstand voltage
50 Hz - 1 min ( rms kV)
50
Lightning impulse withstand voltage
1.2/50 µs (kV peak)
125
Rated current
(A)
Short time
withstand current
(kA/3 s)
Dimensions
(mm)
1250
b
b
2000
b
b
16
b
b
25
Width (W)
800
Height (H)
2300
Depth (D)
1750
800
DE56592
Functions
b Low voltage cabinet
b Voltage transformers
v withdrawable fused
v fixed fused
b Earthing switch
b Voltage presence indicator
b Anticondensation heaters
22
AMTED306006EN.indd
Cubicle description
LB
DE58389_LB
QM Fuse Switch feeder
Rated voltage
(kV)
24
Rated insulation level
Power frequency withstand voltage
50 Hz - 1 min ( rms kV)
50
Lightning impulse withstand voltage
1.2/50 µs (kV peak)
125
Rated current
(A)
630
b
Breaking capacity (1)
(kA)
25
b
Short time
withstand current (1)
(kA/1 s)
25
b
Dimensions
(mm)
Width (W)
800
Height (H)
2300
Depth (D)
1750
(1) Limited by fuses
DE56594
Functions
b Low voltage cabinet
b Switch
v SM6 type SF6 technology
b Earthing switch (integrated to the switch)
b Voltage presence indicator
b MV cables connection
v bottom entry
b Anticondensation heaters
Optional accessories
b Motor for operating mechanism
b Auxiliary contacts
b Key-type interlocks
b 50 W heating element
LB cubicles including a fuse switch are used to supply power and protect low power
transformers.
E.g.: auxiliary service transformers in primary substations.
All operations are carried out from the front face, including access to connections
and busbars.
All functional interlocks meet recommendations in IEC 62271-200:
b the switch is only possible to close if the earthing switch is open and the connection
access panel is in place;
b closing of the earthing switch is only possible if the switch is open;
b opening of the access panel to medium voltage connections and fuses is only
possible of the earthing switches upstream and downstream of the fuses are closed;
b the switch is locked in the open position when the access panel is taken off.
The voltage presence indicator is situated on the front face of the functional unit,
integrated in the switch’s control panel.
AMTED306006EN.indd
23
Cubicle description
LB
DE58389_LB
IM Switch
Rated voltage
(kV)
24
Rated insulation level
Power frequency withstand voltage
50 Hz - 1 min ( rms kV)
50
Lightning impulse withstand voltage
1.2/50 µs (kV peak)
125
Rated current
(A)
630
b
Breaking capacity (1)
(kA)
25
b
Short time
withstand current (1)
(kA/1 s)
25
b
Dimensions
(mm)
Width (W)
800
Height (H)
2300
Depth (D)
1750
(1) Limited by fuses
DE58382
Functions
b Low voltage cabinet
b Switch
v SM6 type SF6 technology
b Earthing switch (integrated to the switch)
b Voltage presence indicator
b MV cables connection
v bottom entry
b CIT operating mechanism
Versions
b CI2 operating mechanism
b CI1 operating mechanism
Optional accessories
b Motor for operating mechanism
b Auxiliary contacts
b Key-type interlocks
b 50 W heating element
24
AMTED306006EN.indd
Cubicle description
LB
DE58389_LB
TM MV/LV transformer unit for auxiliaries
Rated voltage
(kV)
24
Rated insulation level
Power frequency withstand voltage
50 Hz - 1 min ( rms kV)
50
Lightning impulse withstand voltage
1.2/50 µs (kV peak)
125
Rated current
(A)
630
b
Breaking capacity (1)
(kA)
25
b
Short time
withstand current (1)
(kA/1 s)
25
b
Dimensions
(mm)
Width (W)
800
Height (H)
2300
Depth (D)
1750
(1) Limited by fuses
DE58383
Functions
b Low voltage cabinet
b disconnector
v SM6 type SF6 technology
b Earthing switch (integrated to the disconnector)
b MV cables connection
v bottom entry
b three-phase busbars
b Operating mechanism CS
b Two 6.3 A fuses, UTE or DIN type
b LV circuit isolating switch
b One voltage transformer (phase-to-phase)
Optional accessories
b Mechanical indication system for blown fuses
b Connection enclosure for cabling from above
AMTED306006EN.indd
25
Protection system
Protection, monitoring
and control
DE56580
Each NEX functional unit can be equipped
with a comprehensive protection,
monitoring and control system comprising:
b instrument transformers to measure the
necessary electrical values (phase current,
residual current, voltages, etc.)
b protection relays, providing functions
adapted to the part of the network to be
protected
b metering equipment, to inform operators
b low voltage relaying, i.e. to provide
control of the breaking device and
of the withdrawable part
b various auxiliaries: secondary circuit test
units, etc.
Sepam range
Protection relays
Metering equipment
Circuit breaker
Instrument transformer
PE57021
Sepam: protection, monitoring and control units
Sepam, is a range of digital monitoring protection and control units.
Sepam is at the centre of the protection, monitoring and control system for NEX
functional units: all the necessary protection, metering, control, monitoring and
signalling functions are carried out by Sepam.
Like the NEX range, the Sepam range is a range of units defined to provide
an 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
b Sepam C, capacitor feeder.
Protection chain
The Sepam protection units combined with innovative
current sensors provide a 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 install
All the components in the protection chain are
referenced and can be delivered very quickly.
The power of a multi-functional digital unit
Sepam is more than a simple protection relay,
it is truly multi-functional unit notably offering:
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 defined by standard
IEC 60044-8.
26
Sepam advantages
Reliability
b Over 20 years of experience in multi-function digital protection relays
b Over 150,000 Sepam units in service in more than 90 countries.
Quality
b Quality design based on dependability studies and strict definition of
environmental constraints: temperature, pollution, EMC, dielectric strength…
b Quality manufacturing based on procurement agreements with suppliers
and inspection throughout all manufacturing phases.
Simplicity of use
b Ergonomic and intuitive user machine interface (UMI).
b User friendly and powerful PC setting software
b Predefined functions implemented by simple parameter setting.
Easy installation
b The same, easy-to-install remote modules for all Sepam units.
Intuitive use
b Clear graphic LCD display of all data required for local operation
and installation diagnosis
b Working language may be customized to be understood by all users.
AMTED306006EN.indd
Protection, monitoring
and control
Sepam series 20, series 40,
series 80, Sepam 100
The Sepam range of protection relays is
designed for the operation of machines and
electrical distribution networks of industrial
installations and utility substations
at all levels of voltage.
It includes 3 families:
b Sepam series 20,
for usual applications.
b Sepam series 40,
for demanding applications.
b Sepam series 80,
for custom applications.
To cover all needs, from the simplest
to the most complete.
Sepam protection relay
A range of solutions adapted to your application
b Substation protection (incomers, feeders, busbars)
b Transformer protection
b Motor and generator protection.
A comprehensive solution, integrating all of the necessary functions
for your application
b Effective protection of people and property
b Accurate measurements and detailed diagnosis
b Integral equipment control
b Local or remote indication and operation.
PE56735
Flexibility and upgrading capability
To adapt to as many situations as possible, and allow for future installation
upgrading, optional modules may be added to Sepam at any time for new functions.
Sepam series 80 modular architecture
1- Base unit, with integrated or remote advanced
User Machine Interface.
2- Parameter and protection settings saved on removable
memory cartridge.
3- 42 logic inputs and 23 outputs relays with 3 optional modules
providing 14 inputs and 6 outputs.
4- 2 independent Modbus communication ports.
b direct connection to 2-wire RS 485, 4-wire RS 485
and fiber optic networks;
b connection to Ethernet TCP/IP network via PowerLogic
System webserver (Transparent Ready™).
5- Processing of data from 16 temperature sensors.
6- 1 low level analog output, 0-10 mA, 4-20 mA or 0-20 mA.
7- Synchro-check module
PE57126
PE57125
PE60116
8- Software tools:
b Sepam parameter and protection setting and control logic
customization;
b local or remote installation operation;
b retrieval and display of disturbance recording data.
Sepam 100 units
Sepam 100 units round off the Sepam range and can be installed either separately
or combined with either Sepam series 20, 40 and series 80.
Sepam 100 has several variants:
Sepam 100 MI, local breaking device control and signalling modules (many different
line diagram types are available):
b Sepam 100 LD, high impedance differential protection
b Sepam 100 LA, self-powering protection (back-up protection without auxiliary
power supply).
Sepam 100 MI
Sepam 100 LD
AMTED306006EN.indd
Sepam 100 LA
27
Protection, monitoring
and control
Sepam series 20, series 40,
series 80
Selection guide
Sepam
Protections
Applications
Basic
Substation Transformer Generator Busbar Capacitor
Specific
DE58376
10 logic inputs
8 relay outputs
8 temperature probe inputs
1 Modbus communication port
Current
protection
DE58377
Sepam series 20
b
b
b
b
Voltage and
frequency
protection
S20 (*)
T20 (*)
S20 (*)
B21
B22 (*)
Loss of mains
(ROCOF)
10 logic inputs
8 relay outputs
16 temperature probe inputs
1 Modbus communication port
logic equations editor
DE58378
Sepam series 40
b
b
b
b
b
Current,
voltage and
frequency
protection
S40 (*)
Directional
earth fault
S41 (*)
Directional
earth fault
and phase
overcurrent
S42 (*)
T40 (*)
G40
S40 (*)
T42 (*)
42 logic inputs
23 relay outputs
16 temperature probe inputs
2 Modbus communication port
logic equations editor
DE58379
Sepam series 80
b
b
b
b
b
Current,
voltage and
frequency
protection
S80
Directional
earth fault
S81
T81
Directional
earth fault
and phase
overcurrent
S82
T82
G82
T87
G88
Transformer
or machine
transformerdifferential
DE58380
Voltage and
frequency
protection for
two sets of
busbars
DE58381
Machine
differential
Capacitor
bank
unbalance
G87
B83
C86
(*) A Medium Voltage application catalogue is available, for all Medium Voltage equipment designers. Purpose :
b to facilitate the production of Medium Voltage switchgear assemblies which include Schneider Electric compotents
b to specify standard solutions easily
How?
b with specification of the equipment required for each standard application
b and the complete wiring diagram of the Medium Voltage equipment for each application.
28
AMTED306006EN.indd
Protection, monitoring
and control
Instrument transformers
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 A
to 2000 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 easier to determine
accuracy characteristics.
They are installed in the rear part of the functional unit. The energized part is entirely
encapsulated in an epoxy resin, which provides both electrical insulation and
excellent mechanical strength.
DE52387
PE56381
For IF - ID (630 A) cubicle
ARJP2
For IF - ID - BC (1250 A) cubicle
DE52386
PE56382
DE52385
ARJP1
CT types:
IF1 cubicle can use ARJP1/D, ARJP2/D, ARJH and ARJM2
b Single primary current, double secondary current for measurement or protection
b Frequency 50-60 Hz.
CT types:
IF2/ID2/BC2 (*) cubicle can use ARJP3/D, ARJH and ARJM2
b Single primary current, double secondary current for measurement or protection
b Frequency 50-60 Hz.
(*) For ARJP3 only
ARJP3
ARJH
ARJM2
PE56383
For IF - ID - BC (2000 A) cubicle
IF3/ID3/BC3 cubicle can use ARJA1/D
b Single primary current, double secondary current for measurement or protection
b Frequency 50-60 Hz.
ARJA1
AMTED306006EN.indd
29
Protection, monitoring
and control
Instrument transformers (cont.)
PE57127
LPCT low power current transducer
LPCT’s are specific current sensors with a direct voltage output of the “Low Power
Current Transducer” type, in conformity with standard IEC 60044-8.
LPCT’s provide metering and protection functions.
They are defined by:
b the rated primary current
b 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
to saturate until beyond the currents to be broken.
For IF - BC - RW (630 - 1250 A) cubicle
LPCT
Transformer TLP160
b Single primary current, double secondary current for measurement or protection
b Frequency 50-60 Hz
I1n (A)
Ith (kA)
t (s)
Accuracy class
100 to 2500
40
1
0.5 - 5P
For IF - BC - RW (2000 A) cubicle
Transformer TLP190
b Single primary current, double secondary current for measurement or protection
b Frequency 50-60 Hz
I1n (A)
Ith (kA)
t (s)
Accuracy class
100 to 2500
40
1
0.5 - 5P
PE57128
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 appropriate
for use with digital protection devices.
They are installed at the bottom of the functional unit. The energized part is entirely
encapsulated in an epoxy resin, which provides both electrical insulation and
excellent mechanical strength.
Voltage transformer with fuse
For IF - ID - BM - BC - RF - RW cubicle
Transformer VRS2c/S2
b Phase/earth
b Frequency 50-60 Hz
Transformation ratio V/V
Ith (kA)
t (s)
Measuring
cl 0.5
protection
3P
20000:3 / 100:3
50
1
30-50-100 VA
50 VA
22000:3 / 110:3
50
1
30-50-100 VA
50 VA
E28678
Zero sequence core balance current transformers
(CSH type)
CSH 120 and CSH 200 core balance CT’s, provide more sensitive protection
by direct measurement of earth fault currents.
Specifically designed for the Sepam range, they can be directly connected
to the Sepam “residual current” input.
They are only different in terms of their diameter:
b CSH 120 - 120 mm internal diameter
b CSH 200 - 200 mm internal diameter.
CSH toroid CT
30
AMTED306006EN.indd
Withdrawable parts
The devices used to equip the NEX 24 range
of functional units have outstanding features:
b long service life
b maintenance-free live parts
b high electrical endurance
b operating safety
b insensitivity to the environment.
Circuit breaker
A circuit breaker is a safety device enabling
switching and protection of electrical distribution
networks. Installed in the NEX 24 cubicle, it protects
all components situated downstream during
a short-circuit.
Earthing truck
The earthing truck is a safety feature which allows
the cubicle busbar to be earthed. It is installed
instead of the circuit breaker and has the same
interlock possibilities.
Disconnector truck
The disconnector truck enables the upper and lower
part of the cubicle to be short-circuited.
It is installed instead of the circuit breaker
and has the same interlock possibilities.
DE57773
These include:
b the circuit breaker or contactor, the disconnector
truck or the earthing truck
b the lever-type propulsion mechanism
for racking in-out
b interlocks to fix the withdrawable parts
onto the fixed part.
The live parts are housed in an insulating enclosure
in the sealed pressure system in compliance
with IEC 60056.
DE57774
Withdrawable parts
DE57775
Switchgear
PE56608
Evolis vacuum circuit breakers from 1 to 24 kV
Evolis 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 endurance
DE60162
A 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 avoids
localised 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 endurance
The magnetic field is generated by a patented internal coil which surrounds
the 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 been
proven for 20 years in thousands of installations.
Evolis is in conformity with the most demanding mechanical endurance class
(IEC 62271-100: class M2).
24 kV internal coil type interrupter
AMTED306006EN.indd
31
Switchgear
Withdrawable parts (cont.)
Electrical characteristics according to IEC 62271-100
Ur 24 kV
Isc
Ir
16 kA
630 A
b
1250 A
b
Cubicle width (mm)
Ud 50 kV 50 Hz, 1 min
Up 125 kV peak
800
1000
2000 A
25 kA
b
630 A
b
1250 A
b
2000 A
b
Additional characteristics according to IEC 62271-100
Rated values
Voltage
Ur
kV r ms
24
- power frequency withstand
Ud
kV r ms
50
- lightning impulse withstand (1.2/50 µs)
Up
kV peak
125
Frequency
fr
Hz
50-60
Short time withstand current
Ik/tk
kA
Isc/3 s
Peak withstand current
Ip
kA peak
2.5 Isc (50 Hz)
kA peak
2.5 Isc (50 Hz)
Insulation voltage:
2.6 Isc (60 Hz)
Short circuit making capacity
2.6 Isc (60 Hz)
Other characteristics
Operating sequence
O-0.3 s-CO-15 s-CO
O-0.3 s-CO-3 min-CO
O-3 min-CO-3 min-CO
Operating times
Mechanical endurance
Opening
ms
Breaking
ms
< 65
Closing
ms
< 70
Class
M2
Number of switching
operations
10 000 (30 000 on request)
Electrical endurance
Class
E2
Number of switching operations
at full Isc value
16 kA
100
25 kA
100
Capacitive current breaking capacity
31.5 kA
100
Class
C1-C2 (for certain applications)
Over 24 h
< 95%
Over 1 month
< 90%
Operating conditions
Average relative humidity
32
< 50
–25°C to +40°C
AMTED306006EN.indd
Withdrawable parts (cont.)
Switchgear
PE57164
Operating mechanism description
Evolis range circuit breakers are actuated by a RI type operating mechanism,
that ensures a switching device closing and opening rate that is independent
of the operator.
This operating mechanism, which can be motorised, can perform remote control
functions and enables fast reclosing cycles.
This operating mechanism includes mechanical devices:
b an energy storage mechanism stores the energy required in the springs,
b 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).
With the door closed and the CB racked in, the circuit breaker must be electrically
operated.
Contact characteristics
Rated current
Breaking capacity
AC
DC
10 A
1A
0.3 A
220 V (cos ϕ ≥ 0.3)
110/220 V (L/R ≤ 0.02 s)
Operating mechanism characteristics
Type of auxiliary
Closing
release
(YF)
Opening release
Shunt (YO1-YO2)
Single
Supply voltage
AC (V)
50 Hz
110 - 220/230
60 Hz
120
DC (V)
Consumption
Undervoltage
(YM)
Spring charging
motor (M)
Available contact
NC
NO
Ch
Double
24…32 Vdc
48…60 Vdc/ac
100…127 Vdc/ac
220…250 Vdc/ac
24 - 48 - 110 - 125/127 - 220
380
AC (VA)
160
160
320
400/100 (1)
DC (W)
50
50
100
100/10 (1)
380
b
b
5
4
1
b
5
4
1
b
5
3
1
b
5
3
1
b
5
5
1
Possible combinations of
auxiliaries and quantities or
b
b
b
b
or
b
b
or
b
b
or
b
consult us
b
(1) Pick-up/latched consumption.
DE58090EN
Wiring diagram (principle)
Close CB
Open CB
M
M3
YF +
anti-pumping
Motor
Shunt closing
release
+ anti-pumping
system
YO1
“Control
mechanism
armed”
indicator contact
YO2
Shunt
opening
release
Mitop
YM
Undervoltage
release
Low energy
release
(Mitop)
Changeover
contact
NO
NC
contacts contacts
Remote control
AMTED306006EN.indd
33
Withdrawable parts (cont.)
Switchgear
Extraction
This table describes the safety functions available on NEX 24.
How to use the table
Each of the boxes describes the functional status of each circuit breaker position
and the associated parts:
Possible status
Possible status, operation impossible
Impossible status
Parts
Circuit breaker positions
Insertion
Racking-in
Extraction
Racking-out
Removed
Disconnected Test position
Service
Fool-proof
protection (1)
1 - Cradle
Anti-drop (2)
No opening shutters
Shutters padlocking possible
2 - LV plug
Disconnected
No racking-in
Connected
3 - Circuit breaker
Closed
No unplugging
Auto-discharge
function (3)
No racking-in
Open
No racking-out
No closing
Open position circuit breaker locking available (3)
4 - Switchboard door
Open
No racking-in
Closed
5 - Earthing switch
No door opening (4)
Open
No earthing switch closing
Closed
No racking-in
DE58370
(1) This protection mechanism ensures that the performance levels of the circuit breaker correspond with those of the cradle.
(2) Device that prevents the circuit breaker from dropping when extracted from the cradle.
The device can be either unlocked manually or when the extraction rig is put in position.
(3) Option.
(4) Interlocking device to be fitted to the cubicle door. If there is no interlocking, the circuit breaker device should be inhibited.
Circuit breaker extraction table
Enables the circuit breaker to be taken out of the cubicle and handled during
maintenance operations.
b a device using screws and bolts allows the height adjustment up to 250 mm
b a latching device is provided between the extraction table and the cradle.
DE57582
Racking handle
Thls handle enables:
b the withdrawable part to be racked in/out
b the earthing switch to be open/closed.
34
AMTED306006EN.indd
Switchgear
LB switch cubicle
E74222
SM6 switch
The three rotating contacts are placed in an enclosure filled with gas to a relative
pressure of 0.04 MPa (0.4 bars).
The SF6 filled enclosure is of the “sealed pressure system type”. Sealing tightness is
always checked in the factory.
b Safety
v the 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 independent
of the operator.
v the device combines the breaking and disconnecting functions.
v the earthing switch has a short-circuit making capacity in compliance
with standards.
Operating mechanism and auxiliaries
041497R
CI2 double function operating mechanism for QM and IM functions
b Switch function:
v independent closing in two steps:
– operating mechanism recharged by a hand lever or motor
– stored energy released by a push button or trip unit
v independent opening by push button (O) or trip unit.
61032N
b Earthing switch function:
v independent closing by a hand lever.
Operating energy is provided by the compression of a spring which causes
the contacts to close or open after the neutral point is passed.
CS operating mechanism for TM unit
b Switch and earth switch functions
Dependent-operation opening and closing by lever
b Auxiliary contacts
Disconnector (1 O + 2 C)
b Mechanical indications
Fuses blown.
AMTED306006EN.indd
35
LB switch cubicle (cont.)
Switchgear
Fuse ratings for NEX 24 protection units depend, among other things,
on the following criteria:
b service voltage
b transformer rating
b fuse technology (manufacturer).
Different types of fuses with medium loaded striker maybe installed:
v Solefuse fuses as per standard UTE NCF 64.210
v Fusarc CF fuses as per IEC recommendation 60.282.1 and DIN dimensions 43.625.
For fuse-switch combination unit, refer only to the selection table and reference list of
fuses. For all other type of fuses, consult us.
Example: for the protection of a 400 kVA transformer at 22 kV, select either Solefuse
fuses rated 16 A or Fusarc CF fuses rated 25 A.
Fuse selection table
Rating in A - no overload at –5°C < t < 40°C.
Please consult us for overloads and operation over 40°C for France Transfo
oil immersed type transformers.
Type of
fuse
Service
voltage
(kV)
Transformer rating (kVA)
25
50
100
125
160
200
250
Solefuse (UTE NFC standards 13.100, 64.210)
20
6.3
6.3
6.3
6.3
16
16
16
Solefuse (general case, UTE NFC standard 13.200)
20
6.3
6.3
6.3
6.3
16
16
16
22
6.3
6.3
6.3
6.3
16
16
16
Fusarc CF and SIBA (1) (general case according to IEC 62271-105)
20
6.3
6.3
10
10
16
16
25
22
6.3
6.3
10
10
10
16
20
315
400
500
630
800
1000
1250
1600
16
43
43
43
43
43
63
16
16
31.5
16
31.5
31.5
31.5
31.5
43
31.5
43
43
63
63
63
25
25
31.5
25
40
31.5
40
40
50
40
50
50
63
50
80
80
2000
2500
Rated
voltage
(kV)
24
24
100 (1) 125 (1) 24
80
100 (1)
(1) = SIBA fuses
Fuses dimensions
DE57466
Solefuse (UTE standards)
ø 55
ø6
Ur
(kV)
Ir
(A)
L
(mm)
Ø
(mm)
Weight
(kg)
24
6.3 to 63
450
55
2
Ur
(kV)
Ir
(A)
L
(mm)
Ø
(mm)
Weight
(kg)
24
6.3
442
50.5
1.6
10
442
50.5
1.6
16
442
50.5
1.6
20
442
50.5
1.6
25
442
57
2.2
31.5
442
57
2.2
40
442
57
2.2
50
442
78.5
4.1
63
442
78.5
4.1
80
442
86
5.3
Ur
(kV)
Ir
(A)
L
(mm)
Ø
(mm)
Weight
(kg)
24
100
442
85
5.4
125
442
85
5.4
23
450
35
35
DE57467
Fusarc CF
Ø
ø 45
ø6
23
L
33
33
DE57467
SIBA
Ø
ø 45
ø6
23
L
33
36
33
AMTED306006EN.indd
Installation
Connections
PE56239
Switchgear resistance to ageing in a substation depends on
3 key factors
b The need for correctly made connections
New cold connecting technologies offer easy installation and favour durability
in time. Their design means they can be used in polluted environments with harsh
atmospheres.
b The impact of relative humidity
The installing of a heating element is essential in climates with high relative
humidities and significant temperature differentials.
b Ventilation control
The dimensions of air vents must be appropriate for the dissipated energy
in the substation. They must only sweep across the transformer environment.
Cold connected terminals
Schneider Electric’s experience has led it to favour this technology wherever
possible for optimum durability.
The maximum acceptable cable cross-section for standard assemblies are:
b 500 mm2 for incomer or feeder cubicles with single-pole cables;
b 300 mm2 for incomer or feeder cubicles with three-pole cables;
b 95 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
DE58371
Performance
Cross section mm2
Supplier
Number of cables
Comments
3 to 24 kV - 400 A - 2000 A
50 to 500 mm2
all suppliers of cold connectable terminals:
Silec, 3M, Pirelli, Raychem...
1 to 2 per phase (630 A)
1 to 3 per phase (1250 A)
1 to 4 per phase (2000 A)
for greater cross section and number of cables,
please consult us
Dry, three core cable
Short end piece, cold connectable
Performance
Cross section mm2
Supplier
Number of cables
Comments
AMTED306006EN.indd
3 to 24 kV - 400 A - 2000 A
50 to 300 mm2
all suppliers of cold connectable terminals:
Silec, 3M, Pirelli, Raychem...
1 per phase (630 A/1250 A)
1 to 3 per phase (2000 A)
for greater cross section and number of cables,
please consult us
37
Installation
Connections (cont.)
Connection possibilities using dry cables
ID - IF - LB
For bottom entry
IF1
IF2
IF3
ID2
ID3
1 single core per phase
2 single core per phase
3 single core per phase
4 single core per phase
b
b
b
b
b
b
b
b
b
b
b
b
b
b
b
b
b
1 three core per phase
2 three core per phase
3 three core per phase
b
b
b
b
b
b
b
b
b
b
b
b
b
b
b
For top entry
1 single core per phase
2 single core per phase
3 single core per phase
4 single core per phase
1 three core per phase
2 three core per phase
3 three core per phase
IF1
IF2
IF3
ID2 *
ID3
b
b
b
b
b
b
b
b
b
b
b
b
b
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
b
b
b
NA = Not Available
(*) consult us
Bottom cable connection
Cable connection height
Type of cubicle
Configuration
IF1 - IF2 - IF3 - ID
LB
630 to 2000 A
H (mm)
1 set of CTs
450
400
When using cables with termination length greater than 450 mm for NEX 24,
install an additional compartment under the cubicle.
Top busbar connection
Additional depth
The additional depth is 500 mm as a standard cubicle.
Rated current In: 1250 A and 2000 A.
38
Type of cubicle
Configuration
IF2B - IF3B
1250 to 2000 A
1 set of Current Transformers
AMTED306006EN.indd
Implementation example
Installation
Line up switchboard
600
600
800
800
2 feeders cubicle
IF
1000
1000
Incomer cubicle
IF
Bus coupler
BC
800
1000
800
Bus riser Incomer cubicle
RF
IF
800
800
600
3 feeders cubicle
IF
1400
Civil engineering with utility space
Access to the premises
DE58373EN
DE58372EN
(2 supplies cubicles and 1 bussection at 24 kV)
4000*
2500*
(*) Minimum dimensions.
(1) Minimum dimensions to be complied with when installing
the NEX 24 switchboard.
(2) Minimum dimensions to be defined according to the cable
bending radius.
(3) Operating distances.
(4) Distance needed to extract a functional unit from
the switchboard without moving the other units.
A: anchor point
B: adjustment point
600*
A
B
800*
1810 (4)
1600 (3)
1750
750 (1)
Space for MV cables
20 times cable diameter
(2)
Space for LV cables (if required)
Note: for further information, refer to the civil engineering guide,
user and instruction manual.
AMTED306006EN.indd
39
Cubicle equipment
Appendix
Equipment
Type of cubicle
IF
ID
BC
RF
RW
BM
LB
Switchgear
Circuit breaker
Switch
Disconnector truck
Earthing truck
Fixed connections
Racking position indication contact for the withdrawable part
4 NO + 4 NC
Padlocking of isolating shutters for withdrawable parts
Disabling of circuit breaker operating mechanism
Voltage presence indicator
Locking of mechanical racking of the withdrawable part (padlock)
Locking of mechanical racking of the withdrawable part (keylock)
Locking of the electromagnetic racking of the withdrawable part
b
b
v
v
v
v
b
b
v
b
v
v
b
v
v
v
v
v
v
v
v
v
v
v
v
v
v
v
v
v
v
v
v
b
v
b
b
b
v
b
b
v
v
v
v
v
v
v
v
b
v
b
v
b
v
v
b
v
v
v
b
v
b
v
v
v
v
b
v (1)
v
v
Earthing switch (SMALT)
Earthing switch
Earthing switch position indication contacts
Earthing switch position key locking
Electromagnetic earthing switch position locking
3 NO + 3 NC
Transformers
Voltage transformers
(1 per phase) phase-earth
Current transformer
Fused fixed
Fused withdrawable
Set of 2 CT’s
Set of 3 CT’s
Set of LPCT’s
v
v
v
v
v
v
v
v
b
v
b
b
b
v
b
b
b
v
b
b
b
v
b
b
b
v
b
b
v
v
v
v
v
v
v
v
v
v
v
v
v
v
v
v
v
v
v
v
v
v
Cubicle
Protection index enclosure
Anti-arcing protection
Compartments
25 kA - 1 s
IP3X
IP4X
IP2X
Internal arc flap signalling contact
LV control cabinet key locking
LV control cabinet lighting
Anti-condensation heating element
b : basic equipment
v : option
(1) 1 NO + 1 NC available.
40
AMTED306006EN.indd
ART.960107 © Schneider Electric Industries SAS - All rights reserved
Schneider Electric Industries SAS
89, boulevard Franklin Roosevelt
F-92505 Rueil-Malmaison Cedex
Tel.: +33 (0)1 41 29 85 00
www.schneider-electric.com
As standards, specifications and designs change from time to time, please ask for confirmation
of the information given in this publication.
This document has been printed
on ecological paper
Publishing: Schneider Electric Industries SAS
Design: Graphème
Printing: Made in France
AMTED306006EN
07-2008
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