Medium voltage switchgear
Withdrawable circuit breaker
1 to 24 kV
Catalogue
2005
Web enabled
Power and control
MCset
MCset range
1 to 24 kV
0
Contents
Presentation
Schneider Electric
2
MCset range
Presentation
Technical characteristics
Operating conditions
Protection of people
Specific applications
Choice of functional units
8
8
10
11
12
13
14
Cubicle description
AD type cubicles incomer and feeder
CL - GL type cubicles line-up bussectioning
TT type cubicles metering and busbar earthing
DI type cubicles switch-fuse feeder
16
16
18
20
21
Protection, monitoring and control
Thermal diagnosis
Protection system - Sepam range
Sepam 2000 - Sepam 100
Sepam series 20, series 40, series 80
Instrument transformers
22
22
23
24
26
28
Switchgear
Withdrawable parts
32
32
LF circuit breaker
SF circuit breaker
Rollarc contactor
34
38
42
DI switch cubicle
Withdrawable part extraction
46
49
Installation
Implementation examples
Connections
50
50
52
Appendices
Cubicle equipment
Current transformers (Selection guide)
54
54
56
A few references
57
Personal notes
58
1
Presentation
0
Field of application
63280
MCset adapts to all electrical power
distribution requirements from 1 to 24 kV
MCset is an indoor, metal switchgear unit intended for the MV section of
HV/MV substations and high power MV/MV substations.
b MCset offers you:
v pre-engineered and adaptable solutions tailored to your specific
requirements,
v significantly reduced maintenance,
v local support centres throughout the world.
MT20051
b MCset gives you the advantages of:
v continuity of service for your networks,
v enhanced safety for your staff and operations,
v optimized investment throughout the life of your installation,
v the possibility of integrating your medium voltage switchboard
in a monitoring and control system.
MT20052
87158
Applications
Power plants
b Auxiliary substations
Industry
b
b
b
b
b
b
b
Oil & gas,
Chemical industry,
Metallurgy,
Car industry,
Mining,
Cement plants,
…
Infrastructure
b
b
b
b
b
Airports,
Ports,
Hospitals,
Water treatment,
…
PE55540
Marine
b
b
b
b
b
2
Cruisers,
Container ships,
Tankers,
Offshore platforms,
…
Schneider Electric
Presentation
Continuity of service and
complete safety
MCset is solidly based on extensive experience acquired throughout
the world and provides your networks with a high level of dependability
and safety.
MCset 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, MCset has taken account of three key user
requirements:
MT20058EN
Reliability
b type testing was carried out for each performance level in the MCset range.
b the design, manufacturing and testing of MCset was carried out
according to ISO 9001: 2000 quality standard.
b three-dimensional computer modeling techniques were used to study
the electrical fields.
MT20059
Simplicity
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 MCset operations.
b internal arc withstand developed for all functional units.
Schneider Electric
3
Presentation
MCset, a comprehensive solution
PE55170
MCset provides the most efficient means to control and protect a wide
range of applications.
Due to the devices it comprises, MCset 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 Merlin Gerin 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
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
PE55134
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
MT20062
MCset 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.
Thermal diagnosis system
PE55136
Specially designed for Schneider Electric MV equipment,
this system continuously monitors the temperature rise, using optical fibres
and sensors installed at the heart of the sensitive areas.
Thermal diagnosis system reduces the probability of failure and reduces
maintenance time.
4
Schneider Electric
MCset, a comprehensive solution
Presentation
(cont.)
DE55465EN
PE55137
MCset Transparent Ready™ option
MCset 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
Sepam
Sepam
Simple choice
A simple choice between TRe-1 and TRe-2 service levels allows you
to easily order your Transparent Ready™ MCset switchboard.
A customized level is also available.
Your Transparent Ready™ MCset switchboard comes equipped with
a Web server including Web pages dedicated to power equipment data.
Easy commissioning
Transparent Ready™ equipment is delivered ready to connect and
commission. A Quick Start guide, packaged with your switchboard,
provides three easy-to-follow steps.
CM/PM
MCset switchboard
PE55138
Functionalities
PE55140
PE55139
Instantaneous readings
Displays automatically updated meter values
Schneider Electric
TRe-1 TRe-2
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
5
MCset, a comprehensive solution
Presentation
(cont.)
MT20064
Schneider Electric Services, by your side
throughout the life of your installation
Modernizing
Specifying
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
Operating
Implementing
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.
6
Schneider Electric
Presentation
Quality assurance - environment
MT20066
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 MCset
is certified to be in conformity with the requirements of ISO 9001: 2000
quality assurance standard.
Strict and systematic checks
MT20067
During its manufacture, each MCset is subject to systematic routine testing,
intended to check both quality and conformity:
b sealing test;
b filling pressure test;
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 given by the quality control department
on each device’s test certificate.
Protected environment
MT20069EN
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.
MCset 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 14000.
Schneider Electric
7
Presentation
PE55045
MCset range
Busbars
LV control
cabinet
Sepam
Circuit breaker
Current
transformers
Cables connection
Voltage
transformers
compartment
8
Schneider Electric
MCset range
Presentation
(cont.)
Make up of an MCset switchboard
MCset 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
The cubicle is of LSC2B (Loss of Service Continuity Category) type as defined by
IEC standard 62271-200, in other words the medium voltage parts are
compartmented using metal partitions (PM class) which are connected to earth and
which separate:
b the busbars;
b the withdrawable part (circuit breaker, fuse-contactor, disconnector truck or
earthing truck);
b MV connections, earthing switch, current sensors and voltage transformers as
required.
MCset 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.
Four basic cubicle layouts are offered:
b incomer or feeder
AD
b line up bussection
CL - GL
b busbar metering and earthing
TT
b switch-fuse feeder
DI
AD and CL cubicles have withdrawable switchgear.
The protection, monitoring and control system
This includes:
b Sepam, protection, monitoring and control unit;
b current sensors, which may be of 3 types:
v conventional current transformers,
v low voltage toroid type current transformers,
v CSP type broad-range current transformers.
b voltage transformers;
b zero sequence core balance current transformers (CSH type).
The withdrawable part
This includes:
b the circuit breaker, contactor or 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.
Schneider Electric
9
MCset range
Technical characteristics
MT20071
The values below are given for normal operating conditions.
Rated voltage (kV)
7.2
12
17.5
24
20
28
38
50
60
75
95
125
Rated insulation level
power frequency withstand voltage
50 Hz - 1 min (rms kV)
lightning impulse withstand voltage
1.2/50 µs (kV peak)
Nominal current and maximum short time withstand current (1)
Functional unit with circuit breaker
short time withstand
Ith max.
(kA/3 s)
current
rated current
rated current
(kA/1 s)
In max. busbar (A)
In CB
(A)
Functional unit with fuse-contactor (3)
short time withstand
Ith max.
(kA)
current
rated current
In max.
(A)
Functional unit with switch-fuse (DI cubicle)
short time withstand
Ith max.
(kA)
current
rated current
In max. y
(A)
31.5
40
50
4000
630
1250
2500
4000 (2)
31.5
40
50
4000
630
1250
2500
4000 (2)
31.5
40
40
4000
630
1250
2500
4000 (2)
16
25
31.5
2500
630
1250
2000
2500
50 (4)
50 (4)
250
200
50 (4)
50 (4)
31.5 (4)
31.5 (4)
200
200
200
200
40
50
40
40
25
31.5
Internal arc withstand (maximum value)
(kA/1 s)
40
(kA/0.15 s) 50
(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) With fan. For greater values, please consult us.
(3) Lightning impulse dielectric impulse withstand voltage = 60 kV peak.
(4) Limited by fuses.
10
Schneider Electric
MCset range
Operating conditions
Operating conditions
MT20072
Normal operating conditions, according to IEC 60694 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)
MCset has been developed to meet the following specific conditions:
b temperature (possible derating);
b corrosive atmospheres, (possible adaptation).
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 MCset range meets the following international standards:
IEC 60694: clauses common to high voltage switchgear
IEC 62271-200 (60298): metal-enclosed switchgear for alternating current at rated
voltages of between 1 and 52 kV
IEC 62271-100 (60056): high voltage alternating current circuit breakers
IEC 60470: high voltage alternating current contactors
IEC 60265-1: high voltage alternating current switches
IEC 60282-2: high voltage fuses
IEC 62271-102 (60129): alternating current disconnectors and earthing switches
IEC 60255: measurement relay and protection unit (Sepam)
IEC 60044-1: current transformers
IEC 60044-2: voltage transformers.
Schneider Electric
11
MCset range
Protection of people
MT20076
Internal arc withstand
MCset switchboard with tunnel
Internal arc version: MCset is designed to withstand and protect operators
in the case of failure due to an internal arc.
MCset has been successfully tested using type tests.
MCset proposes several options to install an internal arc switchboard.
b 3-sided internal arc protection
For an MCset switchboard fitted against a wall, access to the rear of the cubicle
is impossible. Internal arc protection on 3 sides is sufficient.
b 4-sided internal arc protection
In the case of an MCset 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 limited ceiling height
v ceiling height over 2.8 meters, it is possible to install a tunnel in order to avoid
hot gas to be reflected by the ceiling.
b internal arcing detector
MCset has a system enabling the detection of internal arcing and disconnecting
of power supply in order to limit the duration of the fault to less than 140 ms.
This system incorporates an electro-mechanical fail-safe trip system, located on
the cubicle flaps. This unit transmits information to Sepam to give the circuit breaker
upstream of the fault the opening order.
MCset
Basic version (gas exhaust): MCset is designed to eliminate the effects of internal
arcing in total safety, due to:
b metal flaps positioned above the enclosure, which in the case of internal fault,
limit overpressure in the compartments.
b nonflammable materials used for the cubicle.
Dependable mechanical control devices
MT20077
All operations are carried out from the front face, including access to connections and
busbars.
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, including access to connections
and busbars.
b the voltage present indicator is located on the front face of the functional unit,
in the immediate vicinity of the earthing switch control.
Options
b disarming of circuit breaker when racking out. This function enables
the circuit breaker control springs to be disarmed during the extraction
operation.
b disabling of racking in. This function disables the possibility of racking
the withdrawable part in if the front panel (cable compartment) is not installed.
12
Schneider Electric
MCset range
Specific applications
0
Marine application
PE55541
Derived from standard MCset, a Marine version has been developed to meet specific
conditions when used on ships, offshore platforms,…:
b vibrations/shocks,
b steepness,
b etc.
E74225
MCset is particularly adapted and its characteristics meet Marine requirements:
b compartmented cubicle (LSC2B type),
b front access,
b withdrawable circuit breaker,
b Sepam protection and control chain,
b internal arc withstand,
b thermal diagnosis.
MT20073
Certifications
MCset Marine is approved by:
b Lloyds Register (LR),
b Registro Italiano Navale (RINA),
b Det Norske Veritas (DNV),
b Bureau Veritas (BV),
b Germanischer Lloyd (GL).
Seismic areas
MCset meets international seismic specifications.
Test procedures follow IEC 60068-3-3 standard.
MCset is qualified following the standards:
b UBC 97,
b IBC 2000,
b MSK 64,
b ENDESA.
MCset switchboards are certified by Shell n compliance with DEP 33.67.51.31 Gen
(July 1998) for MV equipments (amendment to IEC 62271-200).
Schneider Electric
13
Choice of functional units
MCset range
The MCset range comprises 13 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 AD cubicle equipped with a withdrawable circuit breaker,
and a transformer application Sepam.
Function
Incomer (1)
Feeder
line
transformer
generator
line
transformer
transformer
Functional unit
LI-B
TI-B
GI-B
LF-B
TF-B
TF-S
cubicle
AD (1 to 4)
AD (1 to 4)
AD (1 to 4)
AD (1 to 4)
AD (1 to 4)
DI 2 - DI 4
device
Sepam protection
relay
circuit breaker
substation
application
circuit breaker
transformer
application
circuit breaker
generator
application
circuit breaker
substation
application
circuit breaker
transformer
application
fuse-switch
MT20082
Sepam
MT20081
MT20080
Single line diagrams
(1) The direct incomer (functional unit without a circuit breaker, equipped with a fixed
busbar bridge) is produced using cubicles AD1-2-3 for U ð to 17.5 kV.
For the 24 kV version, the direct incomer is produced using a specific cubicle: RD4.
14
Schneider Electric
Choice of functional units
MCset range
(cont.)
motor
motor
capacitor
capacitor
switchboard
substation
MF-B
MF-C
CB-B
CB-C
BS-B
SS-B
BB-V
AD (1 to 4)
AD1
AD (1 to 4)
AD1
AD (1 to 4)
TT (1-2-4)
circuit breaker
motor
application
fuse-contactor
motor
application
circuit breaker
capacitor
application
fuse-contactor
capacitor
application
CL (1 to 4) and
GL (1 to 4)
circuit breaker
busbar
application
MT20081
MT20083
MT20084
DE55076
Metering and
busbar earthing
MT20083
Bussectioning
MT20081
Feeder
Schneider Electric
MT20078
circuit breaker
substation
application
15
AD type cubicles
incomer and feeder
Cubicle description
1
DE55501
DE55082
DE55081
AD1, AD2, AD3
7
2
H
H
5
4
6
3
W
D
W
AD2
DE55083
AD1
H
MV compartments
1 busbars for cubicle interconnection
2 withdrawable part (circuit breaker LF1-2-3, contactor R400-R400D equipped
with fuse disconnector truck or earthing truck)
3 MV connections by cables accessible from the front face
4 earthing switch
5 current sensors
6 voltage transformers (optionally equipped with withdrawable fuses).
LV control cabinet
7 low voltage auxiliaries and the protection, monitoring and control unit
are in a control cabinet which is separated from the medium voltage part.
W
AD3
Characteristics
Rated voltage
Rated insulation level
Rated current
kV
kV, rms 50 Hz - 1 min
kV, impulse 1.2/50 µs
A
Breaking capacity
kA
Short time withstand current (kA rms 1 s)
Short time withstand current (kA rms 3 s)
Dimensions and weight
200
250
630
1250
2000
2500
3150
4000 (3)
H (mm)
W (mm)
D (mm) (2)
Approximative weight (kg) (4)
(1) Limited by fuses.
(2) Overall + 175 mm for 4-sided internal arcing protected switchboards, for 3150 A,
or 2 sets of CT’s.
(3) With fan. For greater values, please consult us.
(4) Fully equipped cubicle.
16
Schneider Electric
AD type cubicles
incomer and feeder
Cubicle description
(cont.)
1
7
DE55502
DE55085
AD4
2
H
4
5
6
3
D
W
AD4
MV compartments
1 busbars for cubicle interconnection
2 withdrawable part (SF1-2 circuit breaker, disconnector truck or earthing truck)
3 MV connections by cables accessible from the front face
4 earthing switch
5 current sensors
6 voltage transformers (optionally equipped with withdrawable fuses).
LV control cabinet
7 low voltage auxiliaries and the protection, monitoring and control unit
are in a control cabinet which is separated from the medium voltage part.
AD1
7.2
20
60
12
28
75
b
b
b
b
31.5
31.5
31.5
2300
570
1550
850
31.5
31.5
31.5
Schneider Electric
AD1 contactor
AD2
7.2
20
60
b
b
7.2
20
60
12
28
75
17.5
38
95
b
b
b
b
b
b
50 (1)
50 (1)
50 (1)
2300
570
1550
850
12
28
60
b
50 (1)
50 (1)
50 (1)
50
50
40
2300
700
1550
1000
AD3
40
40
40
31.5
31.5
31.5
7.2
20
60
AD4
12
28
75
17.5
38
95
b
b
b
b
b
50
50
40
2300
900
1550
1300
b
b
b
50
50
40
24
50
125
b
b
b
b
b
31.5
31.5
31.5
b
b
b
40
40
40
b
b
b
b
31.5
31.5
16 or 25
2325
900
1750
1100
17
CL - GL type cubicles
line-up bussectioning
Cubicle description
GL1, GL2, GL3
1
5
1
6
DE55504
CL1, CL2, CL3
DE55503
DE55087
The bussectioning functional unit comprises 2 cubicles
mounted side by side (one cubicle equipped with
a circuit breaker, the other with a busbar return).
2
3
H
4
W
D
W
D
CL1-2-3 or GL1-2-3
MV compartments
1 busbars to connect the bussectioning functional unit with other switchboard
functional units
2 withdrawable part (circuit breaker LF1-2-3, disconnector truck or earthing truck)
3 current sensors
4 voltage transformers (optionally equipped with withdrawable fuses).
LV control cabinet
5 low voltage auxiliaries and protection, monitoring and control unit
are in one control cabinet, separated from the medium voltage part.
Characteristics
Rated voltage
Rated insulation level
Rated current
kV
kV, rms 50 Hz - 1 min
kV, impulse 1.2/50 µs
A
Breaking capacity
kA
Short time withstand current (kA rms 1 s)
Short time withstand current (kA rms 3 s)
Dimensions and weight
630
1250
2000
2500
3150
4000 (3)
H (mm)
W (mm)
D (mm) (1)
Approximative weight (kg) (2)
(1) Overall + 175 mm for 4-sided internal arcing protected switchboards, for 3150 A,
or 2 sets of CT’s.
(2) Fully equipped cubicle.
(3) With fan. For greater values, please consult us.
18
Schneider Electric
CL - GL type cubicles
line-up bussectioning
Cubicle description
(cont.)
V/H
W/
W
clear
tri
alar
1
5
1
6
DE55506
O
I
GL4
DE55505
DE55090
CL4
rese
2
H
L
L
3
L
M
4
W
W
D
D
CL4 or GL4
MV compartments
1 busbars to connect the bussectioning functional unit with other switchboard
cubicles
2 withdrawable part (circuit breaker SF1-2, disconnector truck or earthing truck)
3 current sensors
4 voltage transformers (optionally equipped with withdrawable fuses)
LV control cabinet
5 low voltage auxiliaries and protection, monitoring and control unit
are in one control cabinet, separated from the medium voltage part.
CL1 / GL1
7.2
20
60
b
b
CL2 / GL2
12
28
75
b
b
31.5
31.5
31.5
31.5
31.5
31.5
2300
570 (x 2)
1550
1300 (CL1 + GL1)
Schneider Electric
7.2
20
60
b
b
CL3 / GL3
12
28
75
b
b
50
40
50
40
40
40
2300
700 (x 2)
1550
1500 (CL2 + GL2)
17.5
38
95
b
b
31.5
31.5
31.5
7.2
20
60
CL4 / GL4
12
28
75
b
b
17.5
38
95
b
b
b
b
b
b
50
50
50
50
40
40
2300
900 (x 2)
1550
1700 (CL3 + GL3)
b
b
b
31.5
31.5
31.5
b
b
b
b
b
40
40
40
24
50
125
b
b
b
b
31.5
31.5
2325
900 (x 2)
1750
1600 (CL4 + GL4)
19
TT type cubicles
metering and busbar earthing
Cubicle description
TT4
1
4
DE55508
1
4
DE55507
DE55094
DE55093
TT1, TT2
H
H
2
2
3
W
W
TT1
3
D
D
TT2
DE55095
MV compartments
1 busbars to connect the TT functional unit with other switchboard cubicles
2 earthing switch
3 voltage transformers
H
LV control cabinet
4 low voltage auxiliaries and the protection, monitoring and control unit
are in a control cabinet which is separate from the medium voltage part.
W
TT4
Characteristics
TT1
TT2
TT4
Rated voltage
kV
Rated insulation level kV, rms 50 Hz - 1 min
kV, impulse 1.2/50 µs
Rated current
A
630
(busbar intensity)
1250
2000
2500
3150
Short time withstand current (kA rms 1 s)
Short time withstand current (kA rms 3 s)
7.2
20
60
b
b
12
28
75
b
b
7.2
20
60
b
b
12
28
75
b
b
17.5
38
95
b
b
b
b
b
b
31.5
31.5
b
b
31.5
31.5
b
b
50
40
b
b
50
40
b
b
31.5
31.5
b
b
40
40
Dimensions and weight
2300
570
1550
500
H (mm)
W (mm)
D (mm) (1)
Weight (kg)
2300
700
1550
550
24
50
125
b
b
b
b
31.5
16 or
25
2325
900
1750
560
(1) Overall + 175 mm for 4-sided internal arcing protected switchboards.
20
Schneider Electric
DI type cubicles
switch-fuse feeder
Cubicle description
DI4
4
1
DE55510
4
1
DE55509
DE55099
DE55098
DI2
2
H
2
H
3
3
W
DI2
W
D
D
DI4
MV compartments
1 busbars to connect the DI functional unit with other switchboard cubicles
2 switch - earthing switch
3 MV fuses
LV control cabinet
4 Low voltage auxiliaries and the protection, monitoring and control unit
are in a control cabinet which is separate from the medium voltage part.
Characteristics
DI2
Rated voltage
kV
Rated insulation level kV, rms 50 Hz - 1 min
kV, impulse 1.2/50 µs
Rated current
A
200
Breaking capacity
kA (2)
Short time withstand current (kA rms) (2)
Dimensions and weight
H (mm)
W (mm)
D (mm) (1)
Weight (kg)
7.2
20
60
b
50
50
2300
700
1550
500
DI4
12
28
75
b
50
50
17.5
38
95
b
31.5
31.5
24
50
125
b
31.5
31.5
2325
900
1750
640
(1) Overall + 175 mm for switchboard internal arcing 4 sides.
(2) Limited by fuses.
DI 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.
Schneider Electric
21
Protection, monitoring
and control
Thermal diagnosis
DE55109
Continuity of service is of prime importance
for electrical power supplies, particularly.
for heavy industries.
By using the new thermal diagnosis system
developed for MCset, we offer you
the possibility of monitoring on an on-going
basis, thus reducing the probability of failure
and reducing maintenance time.
0
Thermal diagnosis: Schneider Electric’s medium voltage
know-how
PE55160
This innovative system has been specifically designed for the MCset range.
It incorporates fibre optic temperature measurement systems within an environment
subject to high dielectric stresses.
Schneider Electric’s expertise provides you with the assurance of perfect
electromagnetic compatibility between the various cubicle components.
The advantages of thermal diagnosis
b permanent monitoring of temperature rise in power circuits (busbars, cable
connectors, switchgear);
b indication of the fault zone;
b 2 trip thresholds are available, using a dry contact.
Components
The thermal diagnosis system comprises the following components:
b 1 or 2 modules mounted in the LV control cabinet;
b 3 -point temperature probes (spread over the 3 phases) can be installed
in various monitored zones:
v 3 sensors in the busbar compartment,
v 3 sensors in the cable connector compartment,
v 3 sensors in the switchgear compartment.
b fibre optic links to transmit the signal.
22
Schneider Electric
Protection system
Sepam range
Each MCset functional unit is 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 (contactor or circuit
breaker) and of the withdrawable part
b various auxiliaries: secondary circuit test
units, etc.
DE55111
Protection, monitoring
and control
protection relays
metering equipment
switchgear (circuit breaker or contactor)
instrument transformers
Sepam: protection, monitoring and control units
PE55170
Sepam is a range of digital monitoring protection and control units.
Sepam is at the centre of the protection, monitoring and control system for MCset
functional units: all the necessary protection, metering, control, monitoring and
signalling functions are carried out by Sepam.
Like the MCset range, the Sepam range is a range of units defined to provide
an optimal solution for each application, and includes:
b Sepam S, substation incomer and feeder;
b Sepam B, bussectioning;
b Sepam T, transformer feeder;
b Sepam M, motor feeder;
b Sepam C, capacitor feeder;
b Sepam G, generator feeder.
The Sepam range hinges around 2 functional and hardware bases:
b Sepam series 20, 40 and series 80, a range of modular reays to meet
your exact needs,
b Sepam 2000, focused on performance, covers all MCset functional applications.
Sepam advantages
Reliability
b Over 20 years of experience in multi-function digital protection relays.
b Over 150000 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 throuhghout all manufacturing phases.
Simplicity of use
b Ergonomic and intuitive use machine interface (UMI).
b User friendly and powerful PC setting software.
Schneider Electric
23
Protection, monitoring
and control
Sepam 2000
Sepam 100
Sepam 2000, for all applications
MT20097
The Sepam 2000 range of digital protection, monitoring and control units
provides a comprehensive solution for all applications: substation, busbar,
transformer and motor, as well as generators and capacitors.
Different types of Sepam 2000 are proposed for each type of equipment
to be protected.
For example, there are 30 different types of Sepam 2000 dedicated to protection,
monitoring and control of transformers.
Each Sepam 2000 is an optimized solution, designed to provide an exact response
to the actual requirements of a functional application, including all the required
functions, ready to use.
Focused on performance, Sepam 2000 includes the following functions:
b metering functions: measurement of current and voltage, measurement
of power and active and reactive energy, etc.
b protection functions: directional phase and earthing protection, differential
transformer or machine protection, etc.
b monitoring and control functions: in its function as a programmable logical
controller, Sepam 2000 is pre-programmed to carry out standard monitoring
and control functions, and can be reprogrammed to handle any specific
automatic control function.
E61780
Sepam 2000
PE60118
PE60117
PE60116
To choose the type of Sepam 2000 best suited to your application,
the “Sepam range” catalogue includes selection charts for the whole
Sepam 2000 range. (document AC0401).
A “Sepam 2000 Selection Guide” software package is also available
for computer-aided selection of Sepam 2000 for a given application.
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 or Sepam 2000.
Sepam 100 has several variants:
b 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 100MI
24
Sepam 100LD
Sepam 100LA
Schneider Electric
Protection, monitoring
and control
Functions
Measurements
currents
voltages and frequencies
powers and energies
temperatures
Protection
phase
earth
imbalance
directional
differential
restricted earthing differential
overload
motor
voltage
frequency
uncoupling (df/dt)
specific
Sepam offer panorama
Sepam 2000
Applications
Substation
Busbar
Transformer
Motor
Generator
Capacitor
I1/I2/I3/I0
IM1/IM2/IM3
Itrip 1/2/3/0
U21/U32/U13
V1,V2,V3
V0
Vd
f
P/Q, PM/QM, cos ϕ
Ea/Er
b
b
b
b
b
b
b
b
b
b
b
b
b
b
b
b
b
b
b
b
b
b
b
b
b
b
67N
87M
b
b
b
b
87M
b
b
49
b
27/59
ANSI codes
50/51
50N/51N
46
67/67N
87T/87M/87B
64REF
49/49T/38
37/48/51LR/66
59/27
59N
81H/81L
81R
Network diagnosis
disturbance recording
Switchgear diagnosis
operation time
trip currents, sum of breaking currents A2
trip circuit monitoring
watchdog
Communication
protocol
interface
Monitoring and control
inputs/outputs
basic
maximum
breaking device control
logical selectivity
customizing
0
parameter setting
programming
b
b
b
b
b
b
87T
b
b
b
b
b
b
32P
79
27R
b
b
25
27D
b
b
b
b
b
b
50N/51
(neutral point)
50/51
(tank earth)
27R
32P, 32Q/40 32P, 32Q/40
27D/47
25
50V/51V
cap. bank
imbalance
b
b
b
b
b
b
b
b
b
b
b
b
b
b
b
b
b
b
2 recordings of 86 periods
b
b
b
b
b
b
1 output/4 contacts: 2 x (1NC + 1NO)
Modbus
RS485 2 or 4 wire
10I/6O in/out
26I/14O in/out
b
b
b
b
b
b
b
b
b
b
b
b
b available functions
Schneider Electric
25
Sepam series 20, series 40, series 80
Protection, monitoring
and control
0
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.
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.
PE40013
PE55170
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.
1
4
3
5
Sepam series 20, series 40 and series 80
7
6
Sepam series 80 modular architecture
4- 2 independent Modbus
1- Base unit, with integrated
communication ports.
or remote advanced
User Machine Interface.
b direct connection to 2-wire
RS 485, 4-wire RS 485 and
2- Parameter and protection
fiber optic networks;
settings saved on removable
b connection to Ethernet TCP/IP
memory cartridge.
network via PowerLogic System
3- 42 logic inputs and
webserver (Transparent Ready™).
23 outputs relays with
5- Processing of data from
3 optional modules providing
16 temperature sensors.
14 inputs and 6 outputs.
6- 1 low level analog output,
0-10 mA, 4-20 mA or 0-20 mA.
7- 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.
Simplicity
Easy installation
b the same, easy-to-install remote modules for all Sepam units.
Commissioning assistance
b predefined functions implemented by simple parameter setting;
b user-friendly, powerful PC setting software tool.
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.
26
Schneider Electric
Protection, monitoring
and control
Sepam series 20, series 40, series 80
Selection guide
Sepam
Protections
0
DE50116
Sepam series 80
b 42 logic inputs
b 23 relay outputs
b 16 temperature probe
inputs
b 2 Modbus
communication ports
b logic equations editor
DE50115
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
DE50104
DE50114
Sepam series 20
b 10 logic inputs
b 8 relay outputs
b 8 temperature probe
inputs
b 1 Modbus
communication port
DE50113
Basic
Specific
Current
protection
Substation Transfo. Motor
S20
T20
Generator Busbar
M20
B21
Voltage and
frequency
protection
Loss of mains
(ROCOF)
B22
S40
Current,
voltage and
frequency
protection
Directional
earth fault
S41
Directional
earth fault
and phase
overcurrent
S42
Current,
voltage and
frequency
protection
T40
G40
M41
T42
S80
Directional
earth fault
S81
T81
Directional
earth fault
and phase
overcurrent
Transformer
or machinetransformer
differential
S82
T82
Machine
differential
Schneider Electric
Applications
T87
M81
G82
M88
G88
M87
G87
27
Protection, monitoring
and control
Instrument transformers
Conventional 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 3150 A.
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. This list is available in the selection guide on page 56.
For contactor cubicle AD1
E28676
Transformer ARJP1/N2J
b single primary current, double secondary current for measurement or protection
b frequency 50-60 Hz
I1n (A)
Ith (kA)
t (s)
measuring* cl.0.5
protection* 5P20
ARJP1-2 or 3
10
20
1.2
2.4
1
1
15 VA
2.5 VA
30
3.6
1
50
6
1
75
10
1
100
10
1
150
10
1
200
10
1
250
10
1
For cubicles AD1-CL1-GL1-AD2-CL2-GL2-AD4-GL4
Transformer ARJP2/N2J
b double primary current, double secondary current for measurement or protection
b frequency 50-60 Hz
I1n (A)
Ith (kA)
t (s)
measuring* cl.0.5
protection* 5P20
50-100
40
1
75-150
40
1
100-200
31.5-40
1
5-10VA
2.5-5VA 2.5-5VA 2.5-5VA
150-300
40
1
10-20VA
2.5-5VA
200-400
40
1
7.5-15VA
5-10VA
250-500
40
1
10-20VA
5-10VA
600
50
1
20VA
7.5VA
750
50
1
20VA
7.5VA
For cubicles AD1-CL1-GL1-AD2-CL2-GL2-AD4-GL4
Transformer ARJP3/N2J
b single primary current, double secondary current for measurement or protection
b frequency 50-60 Hz
I1n (A)
Ith (kA)
t (s)
measuring* cl.0.5
protection* 5P20
1000
50
1
30 VA
10 VA
1250
50
1
30 VA
10 VA
For cubicles AD3-CL3-GL3-AD4-GL4
E74399
Transformer ARJA1/N2J
b single primary current, double secondary current for measurement or protection
b frequency 50-60 Hz
I1n (A)
Ith (kA)
t (s)
measuring cl.0.5
protection 5P20
1500
50
1
30 VA
15 VA
2000
50
1
30 VA
15 VA
2500
50
1
30 VA
15 VA
ARJA1
For cubicles AD3-CL3-GL3
E74400
Transformer ARO1a/N3
b single primary current, triple secondary current for measurement or protection
b frequency 50-60 Hz
I1n (A)
Ith (kA)
t (s)
measuring* cl.0.5
protection* 5P20
ARO1
28
3150
50
1
30 VA
7.5 VA
* the secondary current for measuring and protection can be of 1 A or 5 A.
Schneider Electric
Protection, monitoring
and control
Instrument transformers
(cont.)
E72965
Low voltage toroid type current transformers
For cubicles AD1-AD2-AD4 with one single-pole cable
Transformer ARC2
b single primary current, single secondary current for protection
b frequency 50-60 Hz
I1n (A)
Ith (kA)
t (s)
protection 5P20
75
50
1
2.5 VA
100
50
1
2.5 VA
150
50
1
5 VA
200
50
1
5 VA
250
50
1
5 VA
300
50
1
5 VA
400
50
1
5 VA
600
50
1
7.5 VA
b single primary current, double secondary current for measurement or protection
b frequency 50-60 Hz
I1n (A)
Ith (kA)
t (s)
measuring
protection 5P20
200
50
1
5 VA cl.1
2.5 VA
250
50
300
50
400
50
600
50
10 VA cl.0.5
5 VA
10 VA cl.0.5
5 VA
15 VA cl.0.5
5 VA
15 VA cl.0.5
5 VA
For cubicles AD1-AD2-AD4 with two single-pole cables
Transformer ARC3
b single primary current, double secondary current for measurement or protection
b frequency 50-60 Hz
I1n (A)
Ith (kA)
t (s)
measuring cl.0.5
protection 5P20
750
50
1
20 VA
7.5 VA
1000
50
1250
50
30 VA
10 VA
30 VA
10 VA
CSP type broad-range current transformers
E34400
CSP type current sensors, designed for the Sepam 2000, work on the Rogowski coil
principle.
CSP sensors use a winding around an insulating core with no magnetic circuit,
which prevents saturated and residual flux.
Therefore, they are completely linear, and deliver an accurate secondary signal,
a perfect image of the primary current, without distortion for both steady and transient
states in the primary circuits. These sensors have much wider primary current ranges
than current transformers do.
The combining of CSP sensors and Sepam 2000 gives a consistent protection
and measurement system. This in turn makes current sensor specification simpler
(choosing from 3 sensors for a rated insulation level of 24 kV).
CSP sensor
Sensors
Rated current
CSP 3110
CSP 3210
CSP 3310
CSP 3410
30 to 300 A
160 to 640 A
160 to 1600 A
500 to 2500 A
For Sepam 2000, the primary current is chosen to be lower than the indicated range.
Cubicle type
AD1 - AD2 - AD4
AD1 - AD2 - AD4
CL1 - CL3 - CL4
AD3 - AD4
CL3 - CL4
I rated
Isc (kA) 1 s
Type
30 - 300
160 - 1250
40
50
500 - 2500
50
CSP 3110
CSP 3310
CSP 3210
CSP 3410
CSP cannot be used with differential protection devices.
They should be preferred in all other cases in which measurement and protection uses Sepam.
AD4 and CL4 limited to 31.5 kA.
Schneider Electric
29
Protection, monitoring
and control
0
Instrument transformers
(cont.)
Voltage transformers
These supply power to:
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 installed at the bottom of the functional unit. In the withdrawable fuse version,
the voltage transformers are attached to a side wall. The energized part is entirely
encapsulated in an epoxy resin, which provides both electrical insulation and
excellent mechanical strength.
They include the following models:
b with one insulated MV terminal, for connection between neutral and phase
conductors in three-phase systems with withdrawable MV fuses;
b with two insulated MV terminals, for connection between phase conductors.
For cubicles AD1-CL1-GL1-TT1-AD2-CL2-GL2-AD3-CL3-GL3
E28679
Transformer VRQ3n/S2
b phase-earth
b frequency 50-60 Hz
VRQ3
primary voltage
(kV)
1st secondary
voltage (V)
2nd secondary
voltage (V)
1st secondary
accuracy class
(VA)
2nd secondary
accuracy class
(VA)
3/3
3.3/3 5.5/3 6/3
6.6/3 10/3
11/3
13.8/3 15/3
100/3 110/3 110/3 100/3 110/3 100/3 110/3 110/3 100/3
100/3 110/3 110/3 100/3 110/3 100/3 110/3 110/3 100/3
30-50 VA cl.0.5
50 VA cl.0.5
For cubicles AD4-CL4-TT4
E74401
Transformer VRQ1N/S2
b phase-earth
b frequency 50-60 Hz
VRQ1
primary voltage (kV)
1st second. voltage (V)
2nd second. voltage (V)
1st secondary accuracy
class (VA)
2nd secondary accuracy
class (VA)
20/3
100/3
100/3
50 VA cl.0.5
100 VA cl.1
50 VA cl.3P
22/3
110/3
110/3
For cubicles AD2-CL2-GL2-TT2-AD3-CL3-GL3
E28680
Transformer VRC1/S1F
b phase-phase
b frequency 50-60 Hz
primary voltage (kV)
secondary voltage (V)
accuracy class (VA)
3.3
5.5
110
110
75 VA cl.0.5
6.6
110
11
110
13.8
110
15
100
VRC1/S1F
30
Schneider Electric
Protection, monitoring
and control
0
Instrument transformers
(cont.)
For cubicle AD1 contactor
This transformer provides power to the coil in order to keep the magnetic circuit
of the contactor closed.
MT20104
Transformer VRCR/S1
b phase-phase
b frequency 50-60 Hz
primary voltage (kV)
secondary voltage (V)
accuracy class (VA)
3.3
110
50 VA cl.0.5
5.5
110
6.6
110
VRCR
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
Schneider Electric
31
Switchgear
Withdrawable parts
PE55046
0
Withdrawable
part
Extraction
table
32
Schneider Electric
Switchgear
0
Withdrawable parts
(cont.)
These include:
b the circuit breaker or contactor with their opening and closing mechanism,
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;
MCSet circuit breakers LF1-2-3, SF1-2, switches and R400-R400D contactors use
sulphur hexafluoride (SF6) for insulation and breaking.
The live parts are housed in an insulating enclosure in the sealed pressure system
in compliance with IEC 62271-100.
The devices used to equip the MCset range of functional units have
outstanding features:
b long service life;
b maintenance-free live parts;
b high electrical endurance;
b very low overvoltages;
b operating safety;
b insensitivity to the environment;
b breaking capacity and dielectric strength maintained at atmospheric pressure;
b low filling pressure.
Withdrawable parts
Circuit breaker
DE55112
A circuit breaker is a safety device enabling switching and protection of electrical
distribution networks. Installed in the MCset cubicle, it protects all components
situated downstream during a short-circuit.
Earthing truck
DE55113
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 lots of interlock possibilities.
Disconnector truck
DE55114
The disconnector truck enables the upper and lower part of the cubicle to be shortcircuited. It is installed instead of the circuit breaker and has the same interlock
possibilities.
Schneider Electric
33
Withdrawable parts
LF circuit breaker
Switchgear
Presentation
PE55051
LF1-2-3 circuit breakers equip cubicles AD1-2-3 and CL1-2-3 for voltage values
of between 7.2 and 17.5 kV.
Breaking is based on the principle of self-expansion in SF6.
The 3 main poles are contained in an insulating enclosure of the sealed system type,
which requires no filling during the service life of the device (in conformity with
standard IEC 62271-100).
This gas-tight enclosure is filled with SF6 at a low relative pressure of 0.15 Mpa
(1.5 bars).
Low pressure filling ensures reliable gas tightness.
LF circuit breakers are equipped with a pressure switch.
LF1-2-3 circuit breakers are actuated by RI type stored energy release mechanisms.
DE55117
Principle of the self-expansion breaking technique
b
a
Fig. 1
Fig. 2
d
c
e
Fig. 3
34
This technique is the result of a large amount of experience in SF6 technology
and significant research effort.
It combines the rotating arc technique with thermal expansion to create
the conditions to cool and extinguish the arc.
This enables the control mechanism energy to be reduced as well as arc contact
erosion; mechanical and electrical endurance is therefore increased.
The operating sequence in a self-expansion breaking chamber whose moving part is
actuated by the mechanical control is as follows:
b Fig. 1: the circuit breaker is closed;
b Fig. 2: on opening of the main contacts (a), the current is transferred
to the breaking circuit (b);
b Fig. 3: on separation of the arcing contacts, an electrical arc appears
in the expansion chamber (c); the arc rotates under the effect of the magnetic field
created by the coil (d) which has the breaking current running through it;
the overpressure produced by the increase in gas temperature in the gas expansion
chamber (c) causes gas flow which blows the arc within the tubular arcing contact (e),
thus causing it to extinguish when the current passes to zero;
b Fig. 4: circuit breaker open.
Fig. 4
Schneider Electric
Withdrawable parts
LF circuit breaker
Switchgear
(cont.)
Characteristics of LF circuit breakers in MCset cubicles
IEC 62271-100
Rated voltage
Insulation level
Rated nominal current
(la)
Breaking capacity Isc
Making capacity
Short time withstand
current
Capacitor breaking
capacity (1)
Rated operating
sequence
Approximate operating
time for supply of
releases at Un
Mechanical endurance
kV, 50/60 Hz
kV, rms 50 Hz - 1 min
kV, impulse 1.2/50 µs
A
630
1250
2500
3150
kA, rms
kA, peak
kA, rms 3 s
kA, rms 1 s
A
O-3 min-CO-3 min-CO
O-0.3 s-CO-3 min-CO
O-0.3 s-CO-15 s-CO
ms
opening
breaking
closing
number of switching operations
LF1/MCset 1
LF2/MCset 2
7.2
20
60
b
b
7.2
20
60
b
b
31.5
80
31.5
12
28
75
b
b
31.5
80
31.5
440
50
125
40
50
440
b
b
b
48
65
65
10 000
b
b
b
48
65
65
10 000
12
28
75
b
b
40
100
40
LF3/MCset 3
17.5
38
95
b
b
31.5
80
31.5
7.2
20
60
12
28
75
17.5
38
95
b
b
50
125
40
50
440
b
b
50
125
40
50
b
b
31.5
80
31.5
b
b
40
100
40
b
b
b
48
65
65
10 000
(1) For other values, please consult us.
Schneider Electric
35
Switchgear
Withdrawable parts
LF circuit breaker
(cont.)
RI operating mechanism
055120
LF range circuit breakers are actuated by an RI operating mechanism, that ensures
a switching device closing and opening rate that is independent of the operator.
This operating mechanism, which is always motorised, can perform remote control
functions and enables fast reclosing cycles.
The RI operating mechanism includes:
b a spring system that stores the energy needed to close and open the breaker;
b a manual spring charging system;
b an electrical motor-operated spring charging device that automatically recharges
the mechanism as soon as the contacts close (recharging time < 15 s);
b two mechanical push buttons for opening and closing, accessible with the cubicle
door open (circuit breaker in test position).
For control with the door closed (circuit breaker racked in):
v circuit breaker opening by controlling the propulsion device,
v circuit breaker closing optional.
b an electrical closing system comprising a closing release for remote control
and an anti-pumping relay;
b an electrical opening system comprising one or more opening releases
of the following type:
v single or double shunt,
v undervoltage.
b an operation counter;
b an “operating mechanism charged” indication contact (M3);
b an spring charging limit switch contact (M1-M2);
b a black-white mechanical “open-closed” position indicator;
b a multi-pin connector to isolate auxiliary circuits in the “racked out” position.
Auxiliary contacts
The RI operating mechanism is equipped with a block of 14 auxiliary contacts
including:
b 1 changeover contact for the electrical operating mechanism;
b 1 changeover contact for indication;
b 1 contact for the shunt release.
The number of available contacts depends on the position of the available operating
mechanism and the options chosen (see table opposite).
Contact characteristics
Rated current
Breaking capacity
36
AC
DC
10 A
10 A at 220 V (cos ϕ u 0.3)
1.5 A at 110 or 220 V (L/R y 0.01 s)
Schneider Electric
Withdrawable parts
LF circuit breaker
Switchgear
(cont.)
RI operating mechanism I
Type of auxiliary
Supply voltage
Spring charging
motor
AC (V)
50 Hz
60 Hz
DC (V)
AC (VA)
DC (W)
possible combinations of auxiliaries
and quantities
or
or
or
or
Consumption
Closing
release
Opening release
Shunt
single
double
48 - 110 - 125 - 220
120 - 240
24 - 30 - 48 - 60 - 110 - 125 - 220
380
160
380
50
b
b
b
b
b
b
b
b
b
b
160
50
b
b
Undervoltage
400/100 (1)
100/10( 1)
b
320
100
b
b
consult us
b
Available contact
NC
NO
Ch
5
5
5
5
5
4
4
3
3
5
1
1
1
1
1
(1) Pick-up/latched consumption.
Auxiliaries diagram
Circuit breaker
Anti-pumping relay
Spring charging motor
End of charging contacts
Operating mechanism charged indication
Circuit breaker auxiliary circuits
Latched tripping contact
Closing push button (external)
Opening push button for shunt trip release
(external)
Sm3
Opening push button for undervoltage release
(external)
Sn
Closing disabling contact (external)
SP
Pressure switch contact
SQ
Device ready to operate contact
YF
Closing release
Y01-Y02 Shunt opening release
YM
Undervoltage opening release
RI circuit breaker operating mechanism
DE55125
J
KN
M
M1-M2
M3
QF
SE
Sm1
Sm2
Sm1
Sm2
Sm3
Sn
M
Q
J
M2
M1
S
KN
Y02
Y01
M3
YM
SP
SQ
Y
Schneider Electric
37
Withdrawable parts
SF circuit breaker
Switchgear
Presentation
PE55052
SF range circuit breakers equip cubicles AD4 and CL4 for rated voltage values
of 24 kV.
They work on the basis of the “puffer” type principle in SF6, which is used
as a breaking and insulating medium.
Each of the 3 poles have an independent insulating enclosure which forms a filled
pressure system in compliance with IEC standard 62271-100.
Each pole forms a gas-tight unit filled with low pressure SF6 at low relative pressure
of 0.05 to 0.35 MPa (0.5 to 3.5 bars) according to the performance level required.
No filling is required during the equipment’s life.
According to the performance levels, it is possible to optionally equip SF6 circuit
breakers with a pressure switch to act on an alarm in the case of a pressure drop.
SF6 range circuit breakers are actuated by a GMH type spring mechanism.
DE55118
Principle of the puffer breaking technique.
The main contacts and arcing contacts are initially closed (Fig. 1).
Pre-compression (Fig. 2)
When the contacts begin to open, the piston slightly compresses the SF6 gas
in the pressure chamber.
Fig. 1
Fig. 2
Arcing period (Fig. 3)
The arc appears between the arcing contacts. The piston continues its downward
movement.
A small quantity of gas, directed by the insulating nozzle is injected across the arc.
For the breaking of low currents, the arc is cooled by forced convection.
However, for high currents, thermal expansion causes the hot gases to move
towards the cooler parts of the pole unit.
The distance between the two arcing contacts becomes sufficient for the current to
be broken when it reaches the zero point, due to the dielectric properties of the SF6.
Sweeping overstroke (Fig. 4)
The moving parts finish their movement and the injection of cold gas continues until
the contacts are completely open.
Fig. 3
38
Fig. 4
Schneider Electric
Withdrawable parts
SF circuit breaker
Switchgear
(cont.)
Characteristics of SF circuit breakers in MCset cubicles
Electrical characteristics
Rated voltage
Insulation level
Rated nominal current
(Ia)
kV, 50/60 Hz
kV, rms 50 Hz - 1 min
kV, impulse 1.2/50 µs
A
Breaking capacity Isc
Making capacity
Short time withstand
current
kA, rms
kA, peak
kA, rms 3 s
Capacitor breaking
capacity
A
Rated operating
sequence
O-3 min-CO-3 min-CO
O-0.3 s-CO-3 min-CO
O-0.3 s-CO-15 s-CO
ms
Approximate operating
time for supply of
releases at Un
Mechanical endurance
Schneider Electric
SF1/MCset 4
630
1250
2500
630
1250
2500
opening
breaking
closing
number of switching operations
SF2/MCset 4
24
50
125
b
24
50
125
b
b
16
40
16
25
63
25
440
440
875
b
b
b
50
65
70
10 000
b
b
b
24
50
125
b
25
63
25
1750
b
b
b
50
65
70
10 000
24
50
125
b
b
b
31.5
80
31.5
440
875
1750
b
b
b
39
Switchgear
Withdrawable parts
SF circuit breaker
(cont.)
GMH operating mechanism
028368
SF range circuit breakers are actuated by a GMH operating mechanism that ensures
a switching device closing and opening rate that is independent of the operator.
This operating mechanism, always motorised, enables remote operation and fast
reclosing cycles.
The GMH operating mechanism includes:
b a spring system that stores the energy needed to close and open the breaker;
b a manual spring charging system;
b an electrical motor spring charging device that automatically recharges
the mechanism as soon as the contacts close (recharging time < 15 s);
b two mechanical push buttons for opening and closing, accessible with the cubicle
door open (circuit breaker in test position);
b an electrical closing system comprising a closing release for remote control
and an anti-pumping relay;
b an electrical opening system comprising one or more opening releases
of the following type:
v shunt,
v undervoltage.
b an operation counter;
b an optional “operating mechanism charged” indication contact;
b an end of charging contact;
b a black-white mechanical “open-closed” position indicator;
b a multi-pin connector to isolate auxiliary circuits in the “racked out” position.
Auxiliary contacts
The GMH operating mechanism is equipped with a block of 14 auxiliary contacts
including:
b 1 changeover contact for the electrical operating mechanism;
b 1 changeover contact for indication;
b 1 contact for the shunt release.
Contact characteristics
Rated current
Breaking capacity
40
AC
DC
10 A
10 A at 220 V (cos ϕ u 0.3)
1.5 A at 110 or 220 V (L/R y 0.01 s)
Schneider Electric
Withdrawable parts
SF circuit breaker
Switchgear
(cont.)
GMH operating mechanism characteristics
Type of auxiliaries
Supply voltage
Spring charging
motor
AC (V)
50 Hz
60 Hz
DC (V)
AC (VA)
DC (W)
Possible combinations of
auxiliaries and quantities
or
or
or
or
or
Consumption
Closing
release
Opening release
Shunt
single
double
50 - 100 - 140 - 200 - 250 - 380
60 - 110 - 127 - 220 - 250
24 - 33 - 48 - 60 - 110 - 136 - 220 - 260
700
120
570
70
b
b
b
b
b
b
b
b
b
b
b
b
120
70
b
b
b
240
140
b
b
Undervoltage
400/100 (1)
100/10 (1)
b
b
b
Available contact
NC
NO
Ch
5
5
5
5
5
5
4
4
3
3
3
5
1
1
1
1
1
1
(1) Pick-up/latched consumption.
Auxiliary diagram
Sn
Circuit breaker
Spring charging motor
Closing release
End of charging contact
Auxiliary circuit breaker contacts
Anti-pumping relay
Latched release contact
Shunt opening releases
Undervoltage opening release
Operating mechanism charged contact
Pressure switch contact
Device ready to operate contact
Closing push button (external)
Opening push button for shunt releases (external)
Opening push button for undervoltage releases
(external)
Closing disabling contact (external)
GMH circuit breaker operating mechanism
DE55126
J
M
YF
M1-M2
QF
KN
SE
Y01-Y02
YM
M3
SP
SQ
Sm1
Sm2
Sm3
Sm1
Sm2
Sm3
Sn
M
Q
M1
M2
SE
S
KN
M3
SQ
Y01
Y
Y02
Y
Schneider Electric
41
Withdrawable parts
Rollarc contactor
Switchgear
Description
PE55053
b three main poles located in the pressurised enclosure;
b electromagnetic operating mechanism with:
v magnetic latching for Rollarc 400,
v mechanical latching for Rollarc 400D.
b upstream and downstream terminals for power circuit connections;
b pressure switch equipped with a NO contact for continuous monitoring of SF6;
b mechanical interlocking of the contactor in the open position to prevent racking in
or out with the contacts closed;
b 3 HPC fuses with striker pin and auxiliary contact to trip the contactor.
An optimum solution
DE55119
The Rollarc contactor uses rotating arc breaking in SF6 gas. A magnetic field causes
the arc to rotate between the arcing contacts, the field is created by the passage
of the arc through a blow-out coil (Fig. 1).
The rotation movement cools the arc by forced convention.
The arc rotation rate depends on the current to be broken.
The energy required to extinguish the arc is supplied by the electrical system.
The operating mechanism is simple and economical.
Modulation of the rotation rate ensures soft breaking without any dangerous
overvoltage or current chopping.
The Rollarc has a high breaking capacity and may be used without a time delay
in combination with fuses.
Fig. 1
DE55120
Contactor operation
Fig. 2
Fig. 3
Fig. 4
Fig. 5
42
At the beginning of the opening operation, the main contacts and arcing contacts
are closed (Fig. 2).
The main circuit is interrupted by the separation of the main contacts (Fig. 3).
The arcing contacts are still closed.
The arcing contacts separate shortly after the main contacts.
The arc that is created is subjected to the electromagnetic field produced by the coil,
which is proportional to the current to be interrupted.
The arc rotates rapidly, driven by the electromagnetic force and is cooled by forced
convection (arcing period, Fig. 4).
Due to the phase-shift between the current and the magnetic field, this force is still
significant around the current zero point.
At the zero point, the gap between the two arcing rings recovers its original dielectric
strength due to the intrinsic properties of SF6 (contactor open, Fig. 5).
Schneider Electric
Withdrawable parts
Rollarc contactor
Switchgear
(cont.)
Electrical characteristics of the Rollarc R400/R400D (1)
in MCset cubicles
Rated voltage
Dielectric strength
(kV)
7.2
12
Fuse breaking Short time withstand
capacity (2)
current (3)
50 Hz 1 min
(kV rms)
Max. operating Rated
current
contactor
current
Impulse 1.2/50 µs
(kV peak)
(A)
(A)
(kA rms)
(kA rms)
(kA peak)
20
28
60
60
50
50
50
50
125
125
250
200
400
400
(1) Rollarc 400: without mechanical latching. Rollarc 400D: with mechanical latching.
(2) For operating voltages of 3 to 12 kV.
(3) Limited by fuses.
E72898
Electrical endurance
E13151-1
Maximum switchable power
Calculation assumptions (motor)
b ratio between starting current Id and maximum current In: Id/In = 5 ± 20%;
b power factor x efficiency
0.88 x 0.9 = 0.792 for 300 y P < 600 kW
0.9 x 0.92 = 0.828 for 600 y P < 1100 kW
0.92 x 0.94 = 0.865 for 1100 y P < 5000 kW;
b starting time < 10 s;
b starts per hour y 3 according to IEC 60644.
Operating
voltage (kV)
E13151-2
Fig. 1
3.3
4.16
5
5.5
6
6.6
10 (fus. 200 A)
Direct starting
motor (kW)
with 315 A fuses
Transformer
(kVA)
with 315 A fuses
Capacitor
(kvar)
with 315 A fuses
1170
1480
1780
1960
2130
2350
2000
1430
1800
2160
2380
2600
2800
2250
1000
1260
1520
1670
1820
2000
2000
Operating schemes
Temporary service or periodic service
The two curve systems (Fig. 1 and 2) can be used to determine the maximum current
surges accepted by the Rollarc 400 contactor, in temporary or periodic service.
b temporary service: knowing the steady state current Ip, we determine
the maximum duration Ts of a current surge Is from graph 1 (Fig. 2).
b periodic service: knowing 3 of the following 4 parameters:
v overcurrent Is,
v overcurrent time Ts,
v cooling current Ir,
v cooling time Tr.
We determine the 4th parameter using graph 2 (Fig. 1 and 2).
Fig. 2
Schneider Electric
Operating time
b opening time 20 to 35 ms;
b arcing time: < 20 ms;
b closing time: 80 to 120 ms.
43
Switchgear
Withdrawable parts
Rollarc contactor
(cont.)
Fuses
E32130
The fuses used are of the FUSARC CF or FERRAZ type (Standard IEC 60282.1
and DIN 43625) with high breaking capacity.
Substantial fault current limitation reduces the electrodynamic stresses
on the load-side components (contactor, cables, CT, etc).
A “blown fuse” device is used to open the three poles of the contactor.
Rated voltage (kV)
Max. fuse rating (A)
Breaking capacity (kA)
* please consult us
E32151
Fig. 1
7.2
315
50
12
250*
50
Trip curves
The trip curves for FUSARC CF (Fig. 1) and FERRAZ (Fig. 2) fuses are shown
opposite.
These are the average curves with an rms current value tolerance ± 10%.
Limitation curves
FUSARC CF (Fig. 3) and FERRAZ (Fig. 4) fuses have current limiting capacity.
These curves give the maximum value of the limited breaking current Ic (in kA peak),
as a function of the value Ip (in kA rms) of the presumed current that would be
created if there were no protection. For further details ask for the fuse catalogues.
Operating mechanism
Fig. 2
Supply voltage (1)
DC: 48, 110, 127 and 220 V
AC: 50, 100, 110, 127 and 220 V
Acceptable variations: +10% –15%
E32131
b Rollarc 400 contactor
The contactor is closed by the pick-up coils.
The latching coils are inserted in the circuit at the end of the stroke of the contactor.
Consumption
DC
AC
Pick-up
1050 W
900 VA
Latched
30 W
30 VA
b Rollarc 400D contactor
The contacts are mechanically latched in the closed position. They are opened
by a shunt trip release which releases the latching.
Consumption
DC
AC
Fig. 3
Pick-up coil (2)
1050 W
900 VA
Shunt trip
80 W
100 VA
(1) Optional supply possible by auxiliary transformer (see page 31).
(2) Supply time < 0.12 s.
E32152
Auxiliary contacts
Auxiliary contacts are of the common point changeover type.
The following are available:
b 9 contacts for the Rollarc 400;
b 8 contacts for the Rollarc 400D.
Contact characteristics:
Rated current: 10 A
Breaking capacity:
DC (L/R y 0.01 s): 2 A at 110 V
AC (cos.ϕ u 0.3): 10 A at 220 V
Fig. 4
44
Schneider Electric
Withdrawable parts
Rollarc contactor
Switchgear
(cont.)
Auxiliaries diagram
SQ1
X20
X51
X61
XAP
XE
XU
YD
YF
YM
S4
MV fuses
LV fuse
R400 AC MV contactor
Operation counter
Locking contact activated by the pretrip push button
and during racking in/out operations
Contactor limit switch
LV connecter, 42 pins + earth
Control plate
Contactor terminal block
Instantaneous auxiliary relay
Instantaneous auxiliary control relay
0.6 s time delay auxiliary relay
Shunt trip coil
Closing coils
Latching coil
Trip button
Operating mechanism for Rollarc 400 contactors
E32149
FU1
FUBT
K1
P61
S61
E32150
Operating mechanism for Rollarc 400D contactors
Schneider Electric
45
DI switch cubicle
Switchgear
Switch
2
DE55121
E74222
The three rotating contacts are placed in an enclosure filled with gas to a relative
pressure of 0.04 MPa (0.4 bars).
The system offers maximum operating reliability:
b gas tightness
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 SF6-enclosed earthing switch has a short-circuit making capacity
in compliance with standards.
b breaking principle
The outstanding qualities of SF6 gas are used to extinguish the electrical arc.
To increase cooling of the arc, a relative movement is created between the arc
and the gas. The arc strikes when the fixed and moving contacts separate.
The combination of the current and a magnetic field created by a permanent magnet
causes the arc to rotate around the fixed contact, extending and cooling it until
it is extinguished at current zero point. The distance between the fixed and moving
contacts is then sufficient to withstand the recovery voltage.
This system is both simple and dependable, and it provides improved electrical
endurance due to very low wear of contacts.
6
1
3
4
5
enclosure
cover
operating shaft
fixed contact
moving contact
seal
DE55122
1
2
3
4
5
6
Contacts closed
46
Contacts open
Contacts earthed
Schneider Electric
Switchgear
DI switch cubicle
(cont.)
041497R
Operating mechanism and auxiliaries
041496R
CI2 double function operating mechanism
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.
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.
b auxiliary contacts:
v switch (2 O + 2 C),
v switch (2 O + 3 C) and earthing switch (1 O + 1 C),
v switch (1 C) and earthing switch (1 O + 1 C) if motor option.
b motor option
b opening release:
v shunt,
v undervoltage (option).
b closing release: shunt trip.
b fuse blown release: any fuse blown trips the opening of the switch.
Motor option and releases
Un
Supply
Motor option
AC (50 Hz) (1)
DC
(V)
(W)
(VA)
(s)
Opening releases
Shunt
(W)
(VA)
Undervoltage
pick-up
latched
Closing releases
Shunt
(W)
(VA)
24
48
110
125
220
120
230
200
200
<7
<7
200
(W)
(VA)
(W)
(VA)
250
300
300
300
400
750
280
550
50
40
400
750
160
4
200
250
300
300
300
(1) Please consult us for other frequencies.
Schneider Electric
47
DI switch cubicle
Switchgear
(cont.)
Transformer protection
By fuse-switches
MT55097
The fuse rating to install in DI2 and DI4
protection cubicles depends amongst other
things on the following information:
b operating voltage
b transformer power
b fuse technology (manufacturer).
Various types of fuses with medium energy
strikers can be installed:
b according to standard UTE NCF 64.210:
Soléfuse type
b according to IEC recommendation
60282.1 and dimensions DIN 43.625:
Fusarc CF type.
35
Rated
voltage
ø 55
35
ø6
23
E.g.: General case for protection
of a 400 kVA-10 kV transformer,
we will choose Soléfuse fuses, rated at 43 A
or Fusarc CF fuses rated at 50 A.
ø 45
33
Fusarc CF
L
L
(kV)
(A)
(mm)
Soléfuse (UTE standards)
7.2
6.3 to 125
450
12
100
17.5
80
24
6.3 to 63
Fusarc CF (DIN standards)
7.2
125
292
12
6.3 to 20
292
25 to 40
292
50 to 100
292
24
6.3 to 20
442
25 to 40
442
50 to 63
442
80
442
Others (DIN standards)
7.2
160
292
200
292
12
125
292
160
292
200
292
17.5
125
442
24
100
442
125
442
Soléfuse
450
Rating
Ø
Ø
Weight
(mm)
(kg)
55
2
86
50.5
57
78.5
50.5
57
78.5
86
3.3
1.2
1.5
2.8
1.6
2.2
4.1
5.3
85
85
67
85
85
85
85
85
3.8
3.8
2
3.8
3.8
5.4
5.4
5.4
33
ø6
23
Fuse selection table
Rating in A - no overload at - 5°C < t < 40°C.
Please consult us for overloads or for operation above 40°C.
Operating
voltage
(kV)
Transformer power (kVA)
25
50
100 125 160
Soléfuse (standards UTE NFC 13.100, 64.210)
5.5
6.3
16
31.5
31.5
63
6.3
6.3
16
16
31.5
10
6.3
6.3
16
16
16
15
20
6.3
6.3
6.3
6.3
16
Soléfuse (general case, standard UTE NFC 13.200)
3.3
16
16
31.5
31.5
31.5
5.5
6.3
16
16
31.5
31.5
6.6
6.3
16
16
16
31.5
6.3
6.3
16
16
16
10
13.8
6.3
6.3
6.3
16
16
6.3
6.3
16
16
16
15
20
6.3
6.3
6.3
6.3
16
22
6.3
6.3
6.3
6.3
16
Fusarc CF (DIN standard)
16
25
40
50
50
3.3
5.5
10
16
31.5
31.5
40
10
16
25
31.5
40
6.6
6.3
10
16
20
25
10
13.8
6.3
10
16
16
20
6.3
10
10
16
16
15
20
6.3
6.3
10
10
16
22
6.3
6.3
10
10
10
48
800
Rated
1000 1250 1600 2000 2500 voltage
(kV)
200
250
315
400
500
630
63
31.5
16
16
63
31.5
16
16
63
63
43
16
63
63
43
43
63
43
43
63
43
43
43
43
63
63
31.5
31.5
16
16
16
16
63
63
43
31.5
16
16
16
16
100
63
43
31.5
31.5
31.5
16
16
100
80
63
43
31.5
31.5
31.5
16
80
80
43
31.5
31.5
31.5
31.5
100
100
63
43
43
31.5
31.5
125
125
80
63
43
43
31.5
125
80
63
63
43
43
100
80
80
63
63
80
50
50
31.5
25
20
16
16
80
50
50
40
31.5
25
25
20
100
63
63
50
31.5
31.5
25
25
125
80
80
50
40
40
31.5
25
125
100
80
63
50
50
40
31.5
160
125
100
80
50
50
40
40
200
125
125
80
63
63
50
40
160
125
100
80
80
50
50
160
160
100
80
80
63
50
7.2
63
43
63
24
7.2
12
17.5
24
63
7.2
125
100
100
80
80
200
125
125
100
80
12
17.5
125
125
100
24
Schneider Electric
Switchgear
Withdrawable part extraction
Extraction table
MT20112
Adaptable to 3 cubicle widths, this extraction table enables:
b the withdrawable part to be removed from the cubicle;
b the withdrawable part to be fitted into the cubicle.
MT20113
Extraction and lowering tool - option
Adaptable to 3 cubicle widths, this extraction tool enables:
b the withdrawable part to be removed from the cubicle;
b the withdrawable part to be introduced into the cubicle;
b the withdrawable part to be lowered to the ground;
b the withdrawable part to be lifted from the ground.
MT20114
Racking handle
This handle enables:
b the withdrawable part to be racked in/out;
b the earthing switch to be open/closed.
Schneider Electric
49
Implementation examples
MCset 1-2-3 layout
Installation
(7.2 to 17.5 kV)
Line up switchboard
DE55075
(2 supplies cubicles and 1 bussection at 12 kV - 31.5 kA)
500
570
570
2 feeders
cubicle AD1
900
incomer
cubicle AD3
900
900
bussection
cubicles CL3/GL3
900
incomer
cubicle AD3
570
570
3 feeders
cubicle AD1
570
500
DE55074
Civil engineering with utility space (MCset 7.2 to 17.5 kV)
Room
entrance
1550
200
B
420
810
1520
(3)
- 1720
2500
(1)
(1)(5)
2800
(4)
(1)
A
1100
(2)
(1) Minimum dimensions to be complied with when installing the MCset switchboard.
(2) Minimum dimensions to be defined according to the cable bending radius.
(3) Operating distance.
(4) Distance needed to extract a functional unit from the switchboard without moving
the other units.
(5) Provide an exhaust tunnel above the switchboard when the room height is less than 4 metres
(see page 12).
A anchor point
B adjustment point
Nota : for further information, refer to the civil engineering, user and instruction manual.
50
Schneider Electric
Implementation examples
MCset 4 layout
Installation
(24 kV)
Line up switchboard
DE55115
(2 supplies cubicles and 1 bussection at 24 kV)
500
900
900
3 feeders
cubicle AD4
900
900
900
incomer
cubicle AD4
900
900
900
900
incomer
cubicle AD4
bussection
cubicles CL4/GL4
900
900
500
4 feeders
cubicle AD4
DE55116
Civil engineering with utility space (MCset 24 kV)
room
entrance
(1)
2500 2800
150
(3)
(1)(5)
(4)
1700 - 2100
1750
A
B
330
(1)
550
1100
(2)
(1) Minimum dimensions to be complied with when installing the MCset switchboard.
(2) Minimum dimensions to be defined according to the cable bending radius.
(3) Operating distance.
(4) Distance needed to extract a functional unit from the switchboard without moving
the other units.
(5) Provide an exhaust tunnel above the switchboard when the room height is less than 4 metres
(see page 12).
A anchor point
B adjustment point
Nota : for further information, refer to the civil engineering, user and instruction manual.
Schneider Electric
51
Installation
Connections
E72901R
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 630 mm2 for incomer or feeder cubicles with single-pole cables;
b 400 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 pole cable
Short end piece, cold connectable
Performance
Cross section mm2
Supplier
Number of cables
Comments
3 to 24 kV - 400 A - 3150 A
50 to 630 mm2
all suppliers of cold connectable terminals:
Silec, 3M, Pirelli, Raychem...
1 to 8 per phase
for greater cross section and number of cables, please consult us
Dry, three-pole cable
Short end piece, cold connectable
Performance
Cross section mm2
Supplier
Number of cables
Comments
3 to 24 kV - 400 A - 3150 A
50 to 400 mm2
all suppliers of cold connectable terminals:
Silec, 3M, Pirelli, Raychem...
1 to 4 per phase
for greater cross-section, number of cables, please consult us
Connection possibilities using dry cables
Number
of cables
1 single per phase
2 single per phase
3 single per phase
4 single per phase
6 single per phase
8 single per phase
1 three per cubicle
2 three per cubicle
3 three per cubicle
4 three per cubicle
AD1
AD1
AD2
cont.
b (1)
b (1)
b
b
b
b
b (1)
b (1)
b
b
b
b
AD3
AD3
AD4
RD4(2) DI2
DI4
b (1)
b (1)
b
b
b
b
b
b
b
b
b
b
b
b
b
b
b
2500 A 3150 A
b (1)
b (1)
b
b
b
b
b
b
b
b
b
b
b
b
b
b
(1) Possibility of installing LV core balance type transformers.
(2) Specific cubicle: direct incomer.
52
Schneider Electric
Installation
Connections
(cont.)
Bottom cable connection
E72895
Cable connection height
Type of cubicle
Configuration
AD1 - AD2
630 A
1250 A
AD3
2500 A
AD4 - RD4
3150 A
630 A
630 to 2500 A
DI2
DI4
Fig.1
H (mm)
LV core balance CT
1 set of 3 CT’s
2 sets of 3 CT’s
LV core balance CT
1 set of 3 CT’s
2 sets of 3 CT’s
1 set of 3 CT’s
2 sets of 3 CT’s
1 set of 3 CT’s
LV core balance CT
1 set of 3 CT’s
2 sets of 3 CT’s
650 (1)
500
465
650 (1)
480
465
435
435
410
530
420
410
450
650
(1) When installing with a LV core balance CT, use a LV core balance CT of type ARC3
when connecting with 2 cables (see page 29).
E72896
b the cubicles and cables requiring the maximum depth should be taken into
consideration when determining the depth P of a switchboard cable duct (Fig. 1).
b when using cables of length greater than 460 mm for MCset 1-2-3 or 430 mm for
MCset 4, install an additional compartment as marked (A) under the cubicle (Fig. 2).
Top cable connection (optional)
Two depths are available, function the number of cables and the internal arc
withstand of the cubicle: 2000 and 2275 mm.
Fig. 2
DE55511
Top busbar connection (optional, Fig. 3)
The cubicle depth is equal to 2000 mm, it can be equipped with 1 or 2 CT’s.
Fig. 3
Schneider Electric
53
Appendices
0
Cubicle equipment
Equipment
Switchgear
circuit breaker (8)
contactor
pressure switch
fuse switch
disconnector truck
earthing truck
fixed busbars
racking position indication contact for the withdrawable part
3 NO + 3 NC
6 NO + 6 NC
padlocking of isolating shutters for withdrawable parts
locking of withdrawable part/cable compartment
disabling of circuit breaker operating mechanism
voltage present indicator
locking of mechanical racking of the withdrawable part
locking of with keylock or electromagnetic the racking of the withdrawable part
Earthing switch (SMALT)
earthing switch
earthing switch position indication contacts
earthing switch position key locking (1)
electromagnetic earthing switch position locking
3 NO + 3 NC
Transformers
voltage transformers
(1 per phase)
without fuse
with plug-in fuses
fuse melting indication contact
current transformers
single set
double set
LV core balance CT (4)
phase-phase
phase-earth
phase-phase
phase-earth
1 NO
3 TC
6 TC
Connections
connection with cable terminal height > 460 mm (MCset 1-2-3) or 430 mm (MCset 4)
connection from top bar
connection by cable from the bottom
connection by cable from the top
Cubicle
protection index
Key:
b Basic equipment
v Option
(1) Basic equipment with earthing switch option.
(2) According to the room in which the MCset switchboard
is installed, you can choose option 3 or 4 sides, and possibly
an exhaust tunnel for hot gases (see page 12).
(3) Impossible for AD3 3150 A.
(4) Connection 1 or 2 cables per phase.
(5) Possibility of 1 phase-phase VT.
(6) Only for 630 A cubicle.
(7) 1 NO + 1 NC available.
(8) Vacuum breaking circuit breakers: please consult us.
(9) Compartment protection.
54
enclosure
compartments (9)
anti-arcing protection (2)
IP3X
IP4X
IPX1
IP2XC
25 kA - 1 s
31.5 kA - 0.15 s
40 kA - 1 s
lightning arrester
Busbars
1250 A/2500 A/3150 A
exposed
insulated
LV compartment key locking
LV compartment lighting (220 V DC)
anti-condensation heating element (220 V DC)
Schneider Electric
Type of cubicle
AD1
AD1
cont.
b
AD2
AD3
AD4
RD4
CL1
CL2
CL3
CL4
b
b
b
b
b
b
b
b
b
b
b
b
v
b
b
b
v
v
v
v
v
v
v
v
v
v
v
v
v
v
v
v
v
v
v
b
v
v
v
v
b
b
v
b
b
v
v
v
v
b
b
v
b
v
v
v
v
b
b
v
b
v
v
v
v
b
v
v
v
v
b
v
v
v
v
b
v
b
v
b
v
b
v
v
v
v
v
v
b
b
v
(1)
(1)
v
v
v
v
v
(1)
(1)
v
v
v
v
(1)
(1)
v
v
v
v
(1)
(1)
v
v
v
v
v
(1)
(1)
v
v
v
v
v
v
v
v
v
v
v
v
v
v
v
v
v
v
v
v
v
v
b
b
v
v
b
b
v
v
b
b
v
v
b
b
v
v
b
b
v
v
b
b
b
b
v
b
v
b
b
v
b
v
b
b
v
b
v
b
v
v
b
v
b
v
v
b
v
v
b
v
v
b
v
v
v
v
v
v
v
v
v
v
b
v
v
v
v
b
v
v
v
v
b
v
v
v
v
b
v
v
v
v
v
b
v
v
b
v
Schneider Electric
v
v
v
v
v
v
v
b
v
b
v
b
b
(3)
v (5)
v
v
v
v
v
v
v
v (6)
v
v
b
GL2
b
GL3
GL4
(1)
(1)
TT1
(5)
v
v
v
v
(1)
(1)
v
v
v
v
v
v
v
v
v
v
(1)
(1)
v
v
v
v
v
v
v
v
v
v
TT4
DI2
DI4
b
b
(1)
b
b
(1)
b
v (7)
v
b
v (7)
v
v
v
b
b
b
b
b
b
v
b
v
b
v
v
b
v
v
b
v
v
v
v
v
b
v
v
b
b
v
v
b
v
v
v
v
TT2
b
(1)
v
v
b
v
v
b
GL1
(1)
b
(1)
b
b
v
v
v
v
(1)
(1)
v
v
v
v
v
v
v
v
v
v
v
v
v
v
v
v
v
v
v
v (5)
v
v
v
v
v
(1)
(1)
v
v
v
v
v
v
v
v
v
(1)
(1)
v
v
v
v
(1)
v (5)
v
v
v
(6)
b
b
v
b
v
b
v
v
v
b
b
v
b
v
b
v
v
b
v
v
v
b
v
v
v
b
v
v
v
b
v
v
b
v
v
v
b
v
v
b
b
b
v
b
v
b
b
v
b
v
b
v
v
b
v
v
v
v
v
v
b
v
v
v
v
b
v
v
v
v
b
v
v
v
v
b
v
v
b
v
v
b
b
v
b
v
b
b
v
b
v
b
v
v
b
v
v
v
v
v
v
v
v
v
b
v
v
b
b
v
v
v
v
b
v
v
v
v
v
b
v
v
b
55
Current transformers
(Selection guide)
Appendices
Preferred current transformers:
7.2 to 24 kV secondary 1 A or 5 A
Type of cubicle Accuracy class
ratio
Isc kA 1 s
ratio number
AD1
AD1 fuse
contactor
AD2
AD2
AD3
CL3
CL1
CL2
AD4
CL4
31.5
NA (1)
1
10/1-1 or 5-5
2.5 VA - 5P20
15 VA - cl 0.5
40
50
50
31.5
50
31.5
31.5
v
v
40-80/1 or 5
2.5-5 VA - 5P20
v
50-100/1-5
2.5-5 VA - 5P20
v
20/1-1
2.5 VA - 5P20
15 VA - cl 0.5
v
v
v
75-150/1 or 5
2.5-5 VA - 5P20
v
30/1-1 or 5-5
2.5 VA - 5P20
15 VA - cl 0.5
v
v
v
accuracy class and 100-200/1-1 or 5-5
ratio
2.5-5 VA - 5P20
v
40/1-1 or 5-5
2.5 VA - 5P20
15 VA - cl 0.5
v
v
v
150-300/1-1 or 5-5
2.5-5 VA - 5P20
10-20 VA - cl 0.5
v
50/1-1 or 5-5
2.5 VA - 5P20
15 VA - cl 0.5
v
v
v
200-400/1-1 or 5-5
5-10 VA - 5P20
7.5-15 VA - cl 0.5
v
75/1-1 or 5/5
2.5 VA - 5P20
15 VA - cl 0.5
v
v
v
250-500/1-1 or 5-5
5-10 VA - 5P20
10-20 VA - cl 0.5
v
100/1-1 or 5-5
2.5 VA - 5P20
15 VA - cl 0.5
v
v
v
600/1-1 or 5-5
7.5 VA - 5P20
20 VA - cl 0.5
v
150/1-1 or 5-5
7.5 VA - 5P10
15 VA - cl 0.5
v
v
v
v
v
v
750/1-1 or 5-5
7.5 VA - 5P20
20 VA - cl 0.5
v
200/1-1 or 5-5
2.5 VA - 5P20
15 VA - cl 0.5
v
v
v
v
v
v
1000/1-1 or 5-5
10 VA - 5P20
30 VA - cl 0.5
v
250/1-1 or 5-5
2.5 VA - 5P20
15 VA - cl 0.5
v
v
v
v
v
v
v
1250/1-1 or 5-5
10 VA - 5P20
30 VA - cl 0.5
v
300/1-1 or 5-5
2.5 VA - 5P20
15 VA - cl 0.5
v
v
v
v
v
v
v
v
v
v
2000/1-1 or 5-5
15 VA - 5P20
30 VA - cl 0.5
v
v
v
2500/1-1 or 5-5
15 VA - 5P20
30 VA - cl 0.5
v
v
v
3150/1-1 or 5-5
15 VA - 5P20
30 VA - cl 0.5
v
1500/1-1 or 5-5
15 VA - 5P20
30 VA - cl 0.5
400/1-1 or 5-5
2.5 VA - 5P20
15 VA - cl 0.5
(1) Short-circuit current withstand is co-ordinated with the current limited through the fuses.
Other characteristics are available, including the possibility of having 3 secondary windings.
Please consult us detailing the type of protection or measuring required as well as the impedance of the outside loads and the cabling.
56
Schneider Electric
MCset, a product for all your
electrical distribution applications
A few references
Industry
A53-MAPP
b
b
b
b
b
b
b
b
oil, Girassol Mpg-Elf, Angola
oil, Repsol, Santander, Spain
oil, Sincor (Total), Venezuela
pharmaceutical, Merck, Singapore
automotive, Volvo, Belgium
automotive, Ford, Germany
cement production, Lafarge, France
agri-food, Mastellone, Argentina
Infrastructure
b
b
b
b
port of KSA Jeddah, Saudi Arabia
Santafe de Bogota airport, Colombia
Slim River Hospital, Malaysia
water treatment, Degremont, Argentina
Energy
b
b
b
b
b
Sarlux power station, Italy
EVN thermal power station, Vietnam
Costa Nera SA power station, Argentina
electrical distribution, DES (department of electrical services), Brunei
renovation of the Chernobyl nuclear power station, Ukraine
Marine
E74225
E74226
PE55541
E74223
b Finaval/Marnavi-I chemical tankers, Italy
b P&O North Sea Ferries, United Kingdom
b Vietxopetro-VT offshore platform, Vietnam
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RCS Nanterre B 954 503 439
ART.75202
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