SE Rapid Traction Power System DC Switchgear

GE

GE

Industrial Solutions

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GE Industrial Solutions, a division of GE Energy Management, is a global leading provider in power distribution, offering a

wide range of products which include medium and low voltage power distribution equipment and components, and

motor & control systems that are safe, reliable and offer high performance. Its innovative solutions can improve energy

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General introduction 1

Features 2

Typical Applications 6

Structure and Installation 9

Technical Description 11

Cubicle Description 14

Incoming Cubicle 14

Feeder Cubicle 15

Negative Cubicle 16

Electronic Ground Fault Protection 17

Introduction of Components 18

High-speed breaker Gerapid 4207 18

Digital Relay MPR-32 20

Appendix 22

Contents

1

General introductionSE Rapid traction power system DC switchgear developed by GE is a complete power distribution system with feeder protection and control for the DC traction power system in railway transportation.

SE Rapid consists of incoming cubicle, feeder cubicle, negative cubicle, shunt trip cubicle and over voltage limiting cubicle etc.

With the latest US made digital relay and the modern high-speed DC breaker (Gerapid) from GE , SE Rapid satisfies the needs of DC traction power supply for metro and rail transit all over the word.

SE Rapid offers a system solution in a compact and robust framework. It complies with international standards EN50123/IEC60439-1 for application of low-voltage switchgear. The rated current of the switchgear is up to 6000A.

SE Rapid traction power system DC switchgear

2

Features

Safety and Reliability

• Equipped with Gerapid, the high-speed DC breaker with large capacity and high reliability

• Compliance with international standards EN 50123 and IEC60439-1/ IEC61992

• GE's Digital Relay MPR-32 provides all the protection and monitoring functions for DC feeder

systems of metro

Digital relay for DC Protection Gerapid High-speed Circuit Breaker

3

Reliable protection performance

• Protection module is separated from trolley with only sampling module installed.

• Relay communication network

• Electromagnetic trip and static trip

• Comprehensive protection with multi-level operating authority

• Reliable electromagnetic interlock to prevent wrong operation

• Using fault simulation CPU board to simulate all over-current protection.

Mechanical interlock Net-microcomputer relay protection

4

Powerful Communication Function

• TCP/IP, MODBUS communication

• RS485, RS232, Ethernet ports, and PC communication

• Transmission rate up to 10M/100M

• Optical fiber communication, anti-electromagnetic interference

Low voltage control compartment Optical fiber communication

5

Flexible and Easy Operation

Secondary connector Trolley operation

• Friendly user-interface in Chinese and English

• Easy installation assisted by smooth-moving trolly

• The trolley suitable for all feeder cubicles makes operation effortless.

• Flexible parameter configuration and easy operation. All configuration parameters can be set up remotely

• A compact framework with high stabilization

• A secondary connector for optical fiber communication inside the cubicle

6

SCADA ServerSQL Server

PrinterScreens/Trends

Exchanger

Engineer station

90-30 PLC

QuickPanel Control

40.5kV system

GE provides SecoCube-40.5

CGIS Cubicle Gas Insulating

Switchgear with GE Multilin

F650 type integrated

management relaySCADA

GE provides SCADA integrated system

Transformer

GE provides Wave Cast

SCB10 cast resin dry-type

power transformers

Catenary UplinkDownlinkNegative track

Unit substationGE provides MLS-600 low voltage switchgear with MPACT ACB breaker and Record Plus MCCB breaker

DC system

GE provides SE Rapid

DC Switchgear with GE

Gerapid high-speed DC

breaker

Typical ApplicationsDC traction power-systems for urban railway transportation system like metro, light rail and trolleybus

Traction Power Station with complete offer from GE

7

Incoming cubicle

Feeder cubicle

VehicleNegative cubicle

SE Rapid Application in Traction Power StationDC 1500V rectified from high AC voltage (e.g. 35kV) is supplied to the third rail or overhead line through DC switchgear in traction power station

SE Rapid series DC Switchgear complies with standard EN 50123(Railway applications. Fixed installations. D.C. switchgear) and consists of following four types cubicles:

Incoming cubicle: shall be installed between the positive pole of rectifier and DC 1500V positive busbar to control the feeding from rectifiers to DC 1500V busbar

Feeder cubicle: shall be installed between the positive busbar and the disconnector going to the overhead line. It controls and protects the feeding from DC 1500V positive busbar to feeder line

Negative cubicle: shall be installed between negative pole of the rectifier and the return rail to control the return current from feeder line

Electronic ground fault protection: is connected with the negative rail and the earth of public station to measure the voltage between rail and earth. It keeps the safety of people walking on the rail

A B C A B C

8

Control and Protection for Traction Power SystemHigh-speed DC breaker (Gerapid) and the microcomputer relay MPR are integrated in SE Rapid DC switchgear, which provides the highest-level control and protection function for traction power system

SE Rapid provides the most reliable basic protection

Di/dt and △I protection（Rising rate and current increment protection）Protection function based on measure of current: The frame current leakage, electromagnetic/static trip, overcurrent , reverse current and etcProtection function based on measure of voltage: The frame voltage leakage, low level voltage protection, rail voltage limiting protection

SE Rapid also provides more advanced protection

Multi-language selection (Chinese/English), customized according to requirementIntelligent internal and external interlock, safe-operation protectionControl and protection parameter configuration switching freely (Alarm, trip, interlock) by remote SCADA control center or local PCBidirectional low current ground faults, time overcurrent, inverse time overcurrent, and extreme inverse overcurrent protectionCable thermal overload protectionIntertrip protection

9

Structure and Installation

Cubicle dimensions (Could be customized)：（mm）

The switchgear assembly has the type-C material modular construction with self-threading screws joint the frame and components. The frame and enclosure have adequate strength and the rigidity to bear mechanical stress and electrodynamics force during short circuit and components installation.

Protection degree: Trolley compartment: IP2XLow voltage compartment: IP4X

Cubicle type Height Width DepthFeeder cubicle 2260 500/800 1500

Incoming cubicle 2260 500/800 1500

Negative cubicle 2260 1200 1200

OHL DS cubicle 2260 500/800 1500

OA DS cubicle 2260 500/800 1500

60

PA

A P T

PA

A P T

PV PA

A P T

PA

A P T

A

AA

A A

A

A

A

A

A

A

A

A

A

A

A

A

Feeder cubicle

Incoming cubicle

Feedercubicle

Feedercubicle

Incomingcubicle

Feedercubicle

Negative cubicle

500 500 5003

500 500 1200

2200

1585

3 3 3

Multifunction Protection Relay

VG Controls

Rev CurInst CurTmd CurRORLockoutHealthy

Multifunction Protection Relay

VG Controls

Rev CurInst CurTmd CurRORLockoutHealthy

Multifunction Protection Relay

VG Controls

Rev CurInst CurTmd CurRORLockoutHealthy

PA

A P T

PA

A P T

5003

Multifunction Protection Relay

VG Controls

Rev CurInst CurTmd CurRORLockoutHealthy

10

1500

500 500 500

50 400 103 400 103 400

500 500 500

400 103 400 103 400

1400

100

100

200

300

103

300

200

200

1200

1100

100

100

1100

1200

700

Feedercubicle

Incomingcubicle

Incoming cubicle

Feeder cubicle

Feeder cubicle

Feeder cubicle

Negative Cubicle

Layout

Primary System Diagram

Operation ConditionsNormal operation conditions

Ambient temperature：-5℃~+40℃; average temperature within 24h is less than +35℃Atmosphere conditions：clean air; ambient relative humidity shall not exceed 50% when the highest temperature is +40℃. When the temperature is low, it allows higher humidityAltitude：≤1400m

Pollution degreeIII.

M

M

M

M

M M

DC1500V+ DC1500V-

L- L-

V V

11

Technical Description

Electrical Data

Main Components BreakerIncoming cubicle: High-speed breaker 4000A auxiliary power supply (APS) DC.220V Feeder cubicle: High-speed breaker 4000A auxiliary power supply (APS) DC.220V

DisconnectorIncoming cubicle: Electric disconnector 4000A auxiliary power supply (APS) DC.220VNegative cubicle: Manual disconnector 4000A auxiliary power supply (APS) DC.220V

Current divider Incoming cubicle: 4000A/60mVFeeder cubicle: 4000A/60mVNegative cubicle: 800-10000A/60mV

Lightning arrester: Incoming cubicle: 3EB2 020-7D Rated voltage 2000V (Optional)Negative cubicle (Optional): 3EB2 020-7D Rated voltage 2000V (Optional)

Electrical DataNominal voltage Un 1500V DC

Rated insulation voltage UNm 3000V DC

Rated voltage UNe 1800V DC

Impulse withstand voltage UNi primary circuit 1.2/50μs Between main circuit and earth 15kV

Across the isolating distance 18kV

Power frequency withstand voltage Ua Main circuit 50HZ/1min Between main circuit and earth 6.9kV

Across isolating distance 8.3kV

Power frequency withstand voltage Ua Auxiliary circuit 50HZ/1min Between main circuit and frame 2.0kV

Main busbar conventional thermal current Ithe1 6000A

Feeder conventional thermal current Ithe2 4000A

Frame rated earth fault current INcwe 31.5kA

Main busbars rated short-time withstand current INcw [250ms] 70kA

Main busbar rated peak withstand current Ipk 100kA

CB rated short-circuit restraint current INss [250ms] 70kA

CB rated short-circuit peak current Iss 100kA

Over voltage category III

Material category I and II

Protection level IP2X/IP4X

12

Partition and Shutter

Partition separates the equipment into busbar compartment , trolley compartment , low voltage control compartment. It prevents neighbor live units from touching each other. It also avoids other object moving from one compartment to another Partition is made of zinc coated metal plate or insulation board. The zinc coated metal plate is connected to protection conductor

The partition in the compartment will not be damaged or permanently distorted by pressure of electric arc or free gas produced from short-circuit breaking

When the trolley is moved out, the insulated shutter will keep trolley compartment and busbar compartment apart

Protective EarthingSE Rapid not only compliances with IEC60439-1, but also provides more advanced earthing protection

Protection:

The switchgear has an earthing bar across the whole switchboard. All the frame of electrical components inside the equipment are connected to the cubicle frame by the earthing bar

The trolley is connected to the cubicle frame through the sliding contact mechanism

All the metal partitions used to separate the live conductor and metal handle of electrical components are earthed effectively

Earthing:

Drive shaft Clockwise: Test position to service positionCounter clockwise: Service position to test position

Racking Mechanism

13

InterlockInterlocking system is applied to prevent operator errors.The trolley has both mechanical and electrical interlockTrolley can be moved out only when DC breaker is openDisconnector can be operated only when related breaker and is open.

Trolley The trolley located in the trolley compartment consists of the cart , high-speed breaker, measuring unit, latch mechanism, interlocker and main circuit contactWith idler wheels on both sides, the trolley has guiding function to facilitate the movement into or out the compartmentThe electric and mechanic interlocking ensures that the high-speed breaker is always open when the trolley moves between test and service position.Both side of the trolley have sliding contact mechanism for reliable earthing.The main busbar and contactor are visible, with the transparent patition between breaker compartment and busbar compartment made from fire-retardant insulation material.

WindowThe window has the same protection degree as the equipment. It uses transparent self-extinguishing insulation material with the same mechanical robustness of the cubicle.

Mechanical interlock

Trolley

Disconnector and insulatedtransparent partition

14

Cubicle DescriptionSE Rapid DC switchgear includes incoming cubicle, feeder cubicle, negative cubicle and Electronic Ground Fault Protection

Incoming CubicleThe incoming cubicle, as the isolation between the positive pole of rectifier and busbar of DC feeder, is installed between two feeder cubicles

Incoming cubicle

Transparent partition separates the busbar compartment from disconnector-operating compartment, which ensures the safety of operators

Low voltage control compartment segregated by partition to reduce electrical interference and ensure operator safety.

Equipped with one set of high quality electromotion disconnector STOL-4000LOne set of voltage meter to measure the voltage of main busbarEarth fault detecting device for control circuits DC/DC power supply converter Two surge arrestorsElectric interlocking with feeder cubicles and negative cubicles to prevent wrong operation

Disconnector off

Disconnector on Low voltage control compartment

Busbar

15

Feeder CubicleThe cubicle consists of low voltage control compartment, trolley compartment and busbar compartment

Low voltage control compartmentEquipped with digital relay MPR-32 to satisfy requirements of control and protection

Trolley compartmentEquipped with GE high quality high-speed DC breaker Gerapid The trolley equipped with high performance DC circuit breaker, sensor and digital sampling moduleElectrically and mechanically interlocked with feeder cubicles to guarantee safetySmooth and easy trolley operation by drive shaft mechanism

Busbar CompartmentBusbar is located in the rear of the feeder, and outgoing cable is at the bottomThe transparent shutter between busbar compartment and trolley compartment, ensures entire segregation but clear visibility when the trolley is removed out of the cubicle.

Busbar compartment

Low voltage control compartment

Trolley

Feeder Cubicle

16

Negative CubicleThe negative cubicle is installed between two rectifier cubicles, as isolation between the negative pole of the rectifier and rails

Two high quality manual disconnectors STOL-4000AUse one ammeter to measure the total return current, and several ammeters to measure each branch return currentThe frame current leakage protection, detects the current between the frame and the protection earthThe frame voltage leakage protection detects the voltage between the frame and the negative pole of traction systemLightning arrester (Optional)Electrically interlocked with feeder cubicles and incoming cubicles to prevent wrong operation

Negative cubicle

High quality manual disconnectors STOL-4000A

The frame current leakage protection

The frame voltage leakage protection

17

Construction parametersOperation temperature from 5ºC to 45ºC

Weight 150-180kg

Dimensions(height x width x depth) 2260x600x600 [mm]

Electronic Ground Fault ProtectionWhen frame leakage or short circuit between feeder line and overhead earthing line happens, the protection panel will operate according to EN50122-1 standard to guarantee personnel safety.The worst fault condition is frame leakage or short circuit between feeder line and overhead earthing line. The equipment bears the maximum short circuit current for longest time.It is recommended to disable the voltage component in the protection when using thyristor contactor type protection to prevent unintended tripping.

EZZ Electronic Ground Fault Protection in Traction Power StationAnti-shock protectionTrip on all the ground faultsTrip the traction substation in case of current return cable brokenLimit irregular current

Busbar Diagram

Feeder (breaker) cubicleIncoming (disconnector) cubicle

Electronic ground fault protection

18

Technical Data of Gerapid 4207 Type of Arc chute 2x2

Max breaking capacity kA 100

Rated voltage V 2000

Rated current A IEC/EN/ANSI 4200

Short time withstand current A 2h 5000

Short time withstand current A 1min 8500

Short time withstand currentA 20sec 12600

Mechanical endurance (minimal maintenance) 50000

Introduction of ComponentsHigh-speed breaker Gerapid 4207

Compact design based on modular conceptGE six-sigma quality control High breaking capacity and excellent insulation character

Typical short-circuit oscillogramGerapid 4207 with arc chute type 2x2

Test voltage: 1600VProspective breaking current: 114kATime constant: 12 ms

Product Characters

Compact modular design2 stage contact systemDriving-mechanic locking device without auxiliary power supplyElectromagnetic drive integrated with control unitVariable wiring terminalsComplete accessories

Standard Certification IEC60947-2EN50123 ANSI C37.14.GB140482 and win CCC certification

19

Germany

England

Germany

Estonia

Poland

CzechiaSlovakia

Belgium

Spain

Switzerland

Italy Turkey

South Africa

India

China

Thailand

South Korea

Australia

Canada

USA

Chile

Brazil

Gerapid High-speed Breaker Reference List (Part)

Projects Details

Shanghai Metro line 1 extension China

Shanghai Metro line 3

Shanghai Metro line 4

Shanghai Metro line 5

Shenzhen Metro line 1

Shenzhen Metro line 4

Beijing Airport Metro Line

Shenyang Metro

Changchun Metro

Tianjin Metro

Metro Algier Algeria

SNCB Belgium

Sao Paulo Brazil

Metro Vancouver Canada

Metro Santiago Chile

Estonia Railway VIRU Esthonia

DB Energy (German Rail) Germany

Metro Athen Greece

Bangalore India

Dash Dublin Ireland

Melegnano, Cinisello Balsamo (MI) Italy

Metro Pusan South Korea

KGE Casablanca Morocco

Schiphol Holand

Manila Philippines

St. Petersburg Russia

Metro Madrid Spain

Stockholm Sweden

MRTA Bangkog Thailand

ESTRAM, Gebze-Kozaeli, Metro Istanbul Turkey

Network Rail London, Canterbury (Kent) Great Britain

BART(retrofit)

Long Island Rail Road-Shea Stadium (SMC)

20

MPR-32

Digital Relay MPR-32As the market leader in digital relay, MPR-32 integrates control, protection, monitoring and communication for the DC feeder systems in metro applications.

FeaturesPowerful communication, including Ethernet, RS485, RS232, transmission rate up to10M/100M6 levels of authority for safety control32-bit high performance DSPHigh operation reliability (No error codes or wrong operation)Local and remote parameter settingSystematic fault analysis8 pieces of oscillograph records, 200 pieces of warning and events records22 DI and 32 DO

Control and communication diagram

Prot

ectio

n

Monitoring &

Metering

Com

mun

icat

ion

Release protection

Cable fault

Frame leakage

Diagnose record

Process count

Remote transmit

Shunt trip

Interlock

Automatic

re-closing

Control

MODBUS

TCP/IP Ethernet

PC operation

Protection Functions

Instantaneous Overcurrent (dual) (Inst)Inverse time overcurrent protection (Inv)Reverse Overcurrent (Rev)Timed Inverse Overcurrent(TOC)Cable thermal overload (Lng)Rate of rise (ROR) Contact Rail Potential Low Voltage (CRP)Low Level current Fault (LLF)Extreme Inverse Overcurrent (Xinv)Load Impedance Measuring/ Reclosing

S

Main control room of the substation

Feedercubicle

Incomingcubicle

Incomingcubicle

Feedercubicle

Feedercubicle

Feeder

cubicleNegativecubicle

Main control computer

SCADA control center

Ethernet

21

Metro Operating Companies Details

SHANGHAI METRO Shanghai, China

DART Dallas, Texas, USA

LIRR Long Island, New York,

HIAWATHA LRT Minneapolis, Minnesota, USA

BART San Francisco, California, USA

METRA Chicago, Illinois, USA

MARTA Atlanta, Georgia, USA

BOMBARDIER Pittsburgh, PA, USA

ALSTOM (AREVA) Istanbul, Turkey

DENVER LRT Denver, Colorado, USA

DULLES Airport Washington DC, USA

WMATA Washington DC, USA

MPR DIGITAL RELAY REFERENCE LIST (Part)

22

Appendix

Product Certification/StandardIEC60439-1,1999, Low-voltage whole set of switchgear and controlgear assemblies Part 1: Type-tested and partially type-tested assembliesEN50123-1,2003 Railway applications. Fixed installations. D.C. switchgear. GeneralEN50123-2,2003 Railway applications. Fixed installations. D.C. switchgear. D.C. circuit breakersEN50123-6,2003 Railway applications. Fixed installations. D.C. switchgear. D.C. switchgear assemblies

GE Industrial Solutions

Printing Code: IN201301C05EN

© Copyright GE Industrial Solutions 2013

For more information, please visitwww.geindustrial.com

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