GE UR Series L90 Instruction Manual

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831776A2.CDR

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52TL

IND.CONT. EQ.

E83849

Digital Energy

L90 Line Current Differential

System

UR Series Instruction Manual

L90 revision: 7.1x

Manual P/N: 1601-0081-Z1 (GEK-119522)

GE Digital Energy

650 Markland Street

Markham, Ontario

Canada L6C 0M1

Tel: +1 905 927 7070 Fax: +1 905 927 5098

Internet: http://www.GEDigitalEnergy.com

*1601-0081-Z1*

GE Multilin's Quality Management

System is registered to ISO

9001:2008

QMI # 005094

UL # A3775

Copyright © 2013 GE Multilin Inc. All rights reserved. L90 Line Current Differential System UR Series Instruction Manual revision 7.1x. FlexLogic, FlexElement, FlexCurve, FlexAnalog, FlexInteger, FlexState, EnerVista,

CyberSentry, HardFiber, Digital Energy, Multilin, and GE Multilin are trademarks or registered trademarks of GE Multilin Inc.

The contents of this manual are the property of GE Multilin Inc. This documentation is furnished on license and may not be reproduced in whole or in part without the permission of GE Multilin. The content of this manual is for informational use only and is subject to change without notice. Part number: 1601-0081-Z1 (March 2013)

TABLE OF CONTENTS

0. BATTERY DISPOSAL 0.1 BATTERY DISPOSAL

1. GETTING STARTED 1.1 IMPORTANT PROCEDURES

1.1.1 CAUTIONS AND WARNINGS ........................................................................... 1-1

1.2 UR OVERVIEW

1.2.1 INTRODUCTION TO THE UR ........................................................................... 1-3

1.2.2 HARDWARE ARCHITECTURE......................................................................... 1-3

1.2.3 SOFTWARE ARCHITECTURE.......................................................................... 1-5

1.2.4 IMPORTANT CONCEPTS ................................................................................. 1-5

1.3 ENERVISTA UR SETUP SOFTWARE

1.3.1 PC REQUIREMENTS ........................................................................................ 1-6

1.3.2 INSTALLATION..................................................................................................1-6

1.3.3 CONFIGURING THE L90 FOR SOFTWARE ACCESS..................................... 1-7

1.3.4 USING THE QUICK CONNECT FEATURE..................................................... 1-10

1.3.5 CONNECTING TO THE L90 RELAY............................................................... 1-16

1.4 UR HARDWARE

1.4.1 MOUNTING AND WIRING............................................................................... 1-17

1.4.2 COMMUNICATIONS........................................................................................ 1-17

1.4.3 FACEPLATE DISPLAY.................................................................................... 1-17

1.5 USING THE RELAY

1.5.1 FACEPLATE KEYPAD..................................................................................... 1-18

1.5.2 MENU NAVIGATION ....................................................................................... 1-18

1.5.3 MENU HIERARCHY ........................................................................................ 1-18

1.5.4 RELAY ACTIVATION....................................................................................... 1-18

1.5.5 RELAY PASSWORDS..................................................................................... 1-19

1.5.6 FLEXLOGIC CUSTOMIZATION ...................................................................... 1-19

1.5.7 COMMISSIONING ........................................................................................... 1-20

2. PRODUCT DESCRIPTION 2.1 INTRODUCTION

2.1.1 OVERVIEW........................................................................................................ 2-1

2.1.2 FEATURES ........................................................................................................ 2-3

2.1.3 ORDERING........................................................................................................ 2-4

2.1.4 REPLACEMENT MODULES ...........................................................................2-12

2.2 PILOT CHANNEL RELAYING

2.2.1 INTER-RELAY COMMUNICATIONS............................................................... 2-15

2.2.2 CHANNEL MONITOR ...................................................................................... 2-16

2.2.3 LOOPBACK TEST ........................................................................................... 2-17

2.2.4 DIRECT TRANSFER TRIPPING ..................................................................... 2-17

2.3 FUNCTIONALITY

2.3.1 PROTECTION AND CONTROL FUNCTIONS ................................................ 2-18

2.3.2 METERING AND MONITORING FUNCTIONS ............................................... 2-18

2.3.3 OTHER FUNCTIONS....................................................................................... 2-19

2.4 SPECIFICATIONS

2.4.1 PROTECTION ELEMENTS ............................................................................. 2-20

2.4.2 USER-PROGRAMMABLE ELEMENTS........................................................... 2-25

2.4.3 MONITORING.................................................................................................. 2-26

2.4.4 METERING ...................................................................................................... 2-27

2.4.5 INPUTS ............................................................................................................ 2-28

2.4.6 POWER SUPPLY ............................................................................................ 2-29

2.4.7 OUTPUTS ........................................................................................................ 2-29

2.4.8 COMMUNICATIONS........................................................................................ 2-30

2.4.9 INTER-RELAY COMMUNICATIONS............................................................... 2-31

2.4.10 ENVIRONMENTAL .......................................................................................... 2-31

2.4.11 TYPE TESTS ................................................................................................... 2-32

2.4.12 PRODUCTION TESTS .................................................................................... 2-32

2.4.13 APPROVALS ................................................................................................... 2-33

2.4.14 MAINTENANCE ...............................................................................................2-33

GE Multilin L90 Line Current Differential System iii

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3. HARDWARE 3.1 DESCRIPTION

3.1.1 PANEL CUTOUT ................................................................................................3-1

3.1.2 MODULE WITHDRAWAL AND INSERTION......................................................3-6

3.1.3 REAR TERMINAL LAYOUT ...............................................................................3-8

3.2 WIRING

3.2.1 TYPICAL WIRING ..............................................................................................3-9

3.2.2 DIELECTRIC STRENGTH................................................................................3-10

3.2.3 CONTROL POWER..........................................................................................3-10

3.2.4 CT/VT MODULES.............................................................................................3-11

3.2.5 PROCESS BUS MODULES .............................................................................3-13

3.2.6 CONTACT INPUTS AND OUTPUTS................................................................3-13

3.2.7 TRANSDUCER INPUTS AND OUTPUTS........................................................3-21

3.2.8 RS232 FACEPLATE PORT..............................................................................3-22

3.2.9 CPU COMMUNICATION PORTS.....................................................................3-22

3.2.10 IRIG-B...............................................................................................................3-25

3.3 PILOT CHANNEL COMMUNICATIONS

3.3.1 DESCRIPTION .................................................................................................3-26

3.3.2 FIBER: LED AND ELED TRANSMITTERS ......................................................3-27

3.3.3 FIBER-LASER TRANSMITTERS .....................................................................3-27

3.3.4 G.703 INTERFACE...........................................................................................3-28

3.3.5 RS422 INTERFACE .........................................................................................3-31

3.3.6 TWO-CHANNEL TWO-CLOCK RS422 INTERFACE.......................................3-33

3.3.7 RS422 AND FIBER INTERFACE .....................................................................3-33

3.3.8 G.703 AND FIBER INTERFACE ......................................................................3-34

3.3.9 IEEE C37.94 INTERFACE................................................................................3-34

3.3.10 C37.94SM INTERFACE ...................................................................................3-38

4. HUMAN INTERFACES 4.1 ENERVISTA UR SETUP SOFTWARE INTERFACE

4.1.1 INTRODUCTION ................................................................................................4-1

4.1.2 CREATING A SITE LIST ....................................................................................4-1

4.1.3 ENERVISTA UR SETUP OVERVIEW................................................................4-1

4.1.4 ENERVISTA UR SETUP MAIN WINDOW..........................................................4-3

4.2 EXTENDED ENERVISTA UR SETUP FEATURES

4.2.1 SETTINGS TEMPLATES ...................................................................................4-4

4.2.2 SECURING AND LOCKING FLEXLOGIC EQUATIONS....................................4-8

4.2.3 SETTINGS FILE TRACEABILITY.....................................................................4-10

4.3 FACEPLATE INTERFACE

4.3.1 FACEPLATE.....................................................................................................4-13

4.3.2 LED INDICATORS............................................................................................4-14

4.3.3 CUSTOM LABELING OF LEDS .......................................................................4-17

4.3.4 DISPLAY...........................................................................................................4-23

4.3.5 KEYPAD ...........................................................................................................4-23

4.3.6 BREAKER CONTROL ......................................................................................4-23

4.3.7 MENUS.............................................................................................................4-24

4.3.8 CHANGING SETTINGS ...................................................................................4-26

5. SETTINGS 5.1 OVERVIEW

5.1.1 SETTINGS MAIN MENU ....................................................................................5-1

5.1.2 INTRODUCTION TO ELEMENTS......................................................................5-4

5.1.3 INTRODUCTION TO AC SOURCES..................................................................5-5

5.2 PRODUCT SETUP

5.2.1 SECURITY..........................................................................................................5-8

5.2.2 CYBERSENTRY SECURITY............................................................................5-12

5.2.3 DISPLAY PROPERTIES ..................................................................................5-18

5.2.4 CLEAR RELAY RECORDS ..............................................................................5-19

5.2.5 COMMUNICATIONS ........................................................................................5-21

5.2.6 MODBUS USER MAP ......................................................................................5-50

5.2.7 REAL TIME CLOCK .........................................................................................5-50

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5.2.8 FAULT REPORTS ........................................................................................... 5-56

5.2.9 OSCILLOGRAPHY .......................................................................................... 5-58

5.2.10 DATA LOGGER ............................................................................................... 5-61

5.2.11 DEMAND..........................................................................................................5-62

5.2.12 USER-PROGRAMMABLE LEDS..................................................................... 5-63

5.2.13 USER-PROGRAMMABLE SELF-TESTS ........................................................ 5-67

5.2.14 CONTROL PUSHBUTTONS ........................................................................... 5-67

5.2.15 USER-PROGRAMMABLE PUSHBUTTONS................................................... 5-69

5.2.16 FLEX STATE PARAMETERS.......................................................................... 5-74

5.2.17 USER-DEFINABLE DISPLAYS ....................................................................... 5-75

5.2.18 INSTALLATION................................................................................................5-77

5.3 REMOTE RESOURCES

5.3.1 REMOTE RESOURCES CONFIGURATION................................................... 5-78

5.4 SYSTEM SETUP

5.4.1 AC INPUTS ...................................................................................................... 5-79

5.4.2 POWER SYSTEM............................................................................................ 5-80

5.4.3 SIGNAL SOURCES ......................................................................................... 5-81

5.4.4 87L POWER SYSTEM..................................................................................... 5-84

5.4.5 BREAKERS......................................................................................................5-90

5.4.6 DISCONNECT SWITCHES .............................................................................5-94

5.4.7 FLEXCURVES ................................................................................................. 5-97

5.4.8 PHASOR MEASUREMENT UNIT.................................................................. 5-104

5.5 FLEXLOGIC

5.5.1 INTRODUCTION TO FLEXLOGIC ................................................................ 5-127

5.5.2 FLEXLOGIC RULES ......................................................................................5-140

5.5.3 FLEXLOGIC EVALUATION ........................................................................... 5-140

5.5.4 FLEXLOGIC EXAMPLE ................................................................................. 5-141

5.5.5 FLEXLOGIC EQUATION EDITOR................................................................. 5-145

5.5.6 FLEXLOGIC TIMERS .................................................................................... 5-145

5.5.7 FLEXELEMENTS........................................................................................... 5-146

5.5.8 NON-VOLATILE LATCHES ........................................................................... 5-150

5.6 GROUPED ELEMENTS

5.6.1 OVERVIEW.................................................................................................... 5-151

5.6.2 SETTING GROUP .........................................................................................5-151

5.6.3 LINE DIFFERENTIAL ELEMENT................................................................... 5-152

5.6.4 LINE PICKUP................................................................................................. 5-158

5.6.5 DISTANCE ..................................................................................................... 5-160

5.6.6 POWER SWING DETECT............................................................................. 5-178

5.6.7 LOAD ENCROACHMENT.............................................................................. 5-187

5.6.8 PHASE CURRENT ........................................................................................ 5-189

5.6.9 NEUTRAL CURRENT.................................................................................... 5-199

5.6.10 WATTMETRIC GROUND FAULT .................................................................. 5-207

5.6.11 GROUND CURRENT..................................................................................... 5-210

5.6.12 NEGATIVE SEQUENCE CURRENT ............................................................. 5-216

5.6.13 BREAKER FAILURE...................................................................................... 5-222

5.6.14 VOLTAGE ELEMENTS.................................................................................. 5-231

5.6.15 SENSITIVE DIRECTIONAL POWER............................................................. 5-237

5.6.16 SUPERVISING ELEMENTS .......................................................................... 5-241

5.7 CONTROL ELEMENTS

5.7.1 OVERVIEW.................................................................................................... 5-245

5.7.2 TRIP BUS.......................................................................................................5-245

5.7.3 SETTING GROUPS ....................................................................................... 5-247

5.7.4 SELECTOR SWITCH..................................................................................... 5-249

5.7.5 TRIP OUTPUT ............................................................................................... 5-255

5.7.6 UNDERFREQUENCY....................................................................................5-261

5.7.7 OVERFREQUENCY ......................................................................................5-262

5.7.8 FREQUENCY RATE OF CHANGE................................................................ 5-263

5.7.9 SYNCHROCHECK......................................................................................... 5-265

5.7.10 DIGITAL ELEMENTS..................................................................................... 5-269

5.7.11 DIGITAL COUNTERS .................................................................................... 5-272

5.7.12 MONITORING ELEMENTS ........................................................................... 5-274

5.7.13 PILOT SCHEMES ..........................................................................................5-297

5.7.14 AUTORECLOSE ............................................................................................5-321

GE Multilin L90 Line Current Differential System v

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5.8 INPUTS/OUTPUTS

5.8.1 CONTACT INPUTS ........................................................................................5-334

5.8.2 VIRTUAL INPUTS ..........................................................................................5-336

5.8.3 CONTACT OUTPUTS ....................................................................................5-337

5.8.4 VIRTUAL OUTPUTS ......................................................................................5-339

5.8.5 REMOTE DEVICES........................................................................................5-340

5.8.6 REMOTE INPUTS ..........................................................................................5-341

5.8.7 REMOTE DOUBLE-POINT STATUS INPUTS...............................................5-342

5.8.8 REMOTE OUTPUTS ......................................................................................5-343

5.8.9 DIRECT INPUTS/OUTPUTS ..........................................................................5-343

5.8.10 RESETTING ...................................................................................................5-346

5.8.11 IEC 61850 GOOSE ANALOGS ......................................................................5-346

5.8.12 IEC 61850 GOOSE INTEGERS .....................................................................5-347

5.9 TRANSDUCER INPUTS AND OUTPUTS

5.9.1 DCMA INPUTS ...............................................................................................5-348

5.9.2 RTD INPUTS ..................................................................................................5-349

5.9.3 DCMA OUTPUTS ...........................................................................................5-351

5.10 TESTING

5.10.1 TEST MODE...................................................................................................5-354

5.10.2 FORCE CONTACT INPUTS...........................................................................5-355

5.10.3 FORCE CONTACT OUTPUTS.......................................................................5-356

5.10.4 CHANNEL TESTS ..........................................................................................5-357

5.10.5 PHASOR MEASUREMENT UNIT TEST VALUES.........................................5-357

6. ACTUAL VALUES 6.1 OVERVIEW

6.1.1 ACTUAL VALUES MAIN MENU.........................................................................6-1

6.2 STATUS

6.2.1 CONTACT INPUTS ............................................................................................6-4

6.2.2 VIRTUAL INPUTS ..............................................................................................6-4

6.2.3 REMOTE INPUTS ..............................................................................................6-4

6.2.4 REMOTE DOUBLE-POINT STATUS INPUTS...................................................6-5

6.2.5 DIRECT INPUTS ................................................................................................6-5

6.2.6 CONTACT OUTPUTS ........................................................................................6-5

6.2.7 VIRTUAL OUTPUTS ..........................................................................................6-6

6.2.8 AUTORECLOSE.................................................................................................6-6

6.2.9 REMOTE DEVICES............................................................................................6-6

6.2.10 CHANNEL TESTS ..............................................................................................6-7

6.2.11 DIGITAL COUNTERS.........................................................................................6-8

6.2.12 SELECTOR SWITCHES ....................................................................................6-8

6.2.13 FLEX STATES....................................................................................................6-9

6.2.14 ETHERNET ........................................................................................................6-9

6.2.15 REAL TIME CLOCK SYNCHRONIZING ............................................................6-9

6.2.16 IEC 61850 GOOSE INTEGERS .......................................................................6-10

6.2.17 REMAINING CONNECTION STATUS .............................................................6-10

6.2.18 PARALLEL REDUNDANCY PROTOCOL (PRP) .............................................6-11

6.3 METERING

6.3.1 METERING CONVENTIONS ...........................................................................6-12

6.3.2 DIFFERENTIAL CURRENT..............................................................................6-15

6.3.3 SOURCES ........................................................................................................6-16

6.3.4 SENSITIVE DIRECTIONAL POWER ...............................................................6-21

6.3.5 SYNCHROCHECK ...........................................................................................6-21

6.3.6 TRACKING FREQUENCY................................................................................6-21

6.3.7 FREQUENCY RATE OF CHANGE ..................................................................6-21

6.3.8 FLEXELEMENTS™..........................................................................................6-22

6.3.9 IEC 61580 GOOSE ANALOG VALUES ...........................................................6-22

6.3.10 WATTMETRIC GROUND FAULT.....................................................................6-23

6.3.11 PHASOR MEASUREMENT UNIT ....................................................................6-23

6.3.12 RESTRICTED GROUND FAULT......................................................................6-24

6.3.13 TRANSDUCER INPUTS AND OUTPUTS........................................................6-24

6.4 RECORDS

6.4.1 FAULT REPORTS ............................................................................................6-25

6.4.2 EVENT RECORDS...........................................................................................6-25

vi L90 Line Current Differential System GE Multilin

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6.4.3 OSCILLOGRAPHY .......................................................................................... 6-26

6.4.4 DATA LOGGER ............................................................................................... 6-26

6.4.5 PHASOR MEASUREMENT UNIT RECORDS.................................................6-26

6.4.6 BREAKER MAINTENANCE............................................................................. 6-27

6.5 PRODUCT INFORMATION

6.5.1 MODEL INFORMATION .................................................................................. 6-28

6.5.2 FIRMWARE REVISIONS.................................................................................6-28

7. COMMANDS AND TARGETS

7.1 COMMANDS

7.1.1 COMMANDS MENU .......................................................................................... 7-1

7.1.2 VIRTUAL INPUTS.............................................................................................. 7-1

7.1.3 CLEAR RECORDS ............................................................................................ 7-2

7.1.4 SET DATE AND TIME ....................................................................................... 7-2

7.1.5 RELAY MAINTENANCE .................................................................................... 7-3

7.1.6 PHASOR MEASUREMENT UNIT ONE-SHOT.................................................. 7-3

7.1.7 SECURITY .........................................................................................................7-5

7.2 TARGETS

7.2.1 TARGETS MENU............................................................................................... 7-6

7.2.2 TARGET MESSAGES ....................................................................................... 7-6

7.2.3 RELAY SELF-TESTS......................................................................................... 7-6

8. SECURITY 8.1 USER ACCOUNTS

8.1.1 OVERVIEW........................................................................................................ 8-1

8.1.2 ENABLING THE SECURITY MANAGEMENT SYSTEM................................... 8-1

8.1.3 ADDING A NEW USER ..................................................................................... 8-1

8.1.4 MODIFYING USER PRIVILEGES ..................................................................... 8-2

8.1.5 PASSWORD REQUIREMENTS ........................................................................ 8-3

8.2 CYBERSENTRY

8.2.1 OVERVIEW........................................................................................................ 8-4

8.2.2 SECURITY MENU .............................................................................................8-5

9. THEORY OF OPERATION 9.1 OVERVIEW

9.1.1 L90 DESIGN ...................................................................................................... 9-1

9.1.2 L90 ARCHITECTURE........................................................................................ 9-1

9.1.3 REMOVAL OF DECAYING OFFSET................................................................. 9-2

9.1.4 PHASELET COMPUTATION............................................................................. 9-2

9.1.5 DISTURBANCE DETECTION............................................................................ 9-3

9.1.6 FAULT DETECTION.......................................................................................... 9-3

9.1.7 GROUND DIFFERENTIAL ELEMENT............................................................... 9-4

9.1.8 CLOCK SYNCHRONIZATION ........................................................................... 9-5

9.1.9 FREQUENCY TRACKING AND PHASE LOCKING.......................................... 9-6

9.1.10 FREQUENCY DETECTION...............................................................................9-7

9.1.11 PHASE DETECTION ......................................................................................... 9-7

9.1.12 PHASE LOCKING FILTER .............................................................................. 9-10

9.1.13 MATCHING PHASELETS................................................................................ 9-11

9.1.14 START-UP ....................................................................................................... 9-11

9.1.15 HARDWARE AND COMMUNICATION REQUIREMENTS .............................9-11

9.1.16 ONLINE ESTIMATE OF MEASUREMENT ERRORS ..................................... 9-12

9.1.17 CT SATURATION DETECTION ...................................................................... 9-13

9.1.18 CHARGING CURRENT COMPENSATION .....................................................9-13

9.1.19 DIFFERENTIAL ELEMENT CHARACTERISTICS........................................... 9-14

9.1.20 RELAY SYNCHRONIZATION.......................................................................... 9-15

9.2 OPERATING CONDITION CHARACTERISTICS

9.2.1 DESCRIPTION................................................................................................. 9-16

9.2.2 TRIP DECISION EXAMPLE............................................................................. 9-18

9.2.3 TRIP DECISION TEST .................................................................................... 9-18

GE Multilin L90 Line Current Differential System vii

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9.3 DISTANCE ELEMENTS

9.3.1 INTRODUCTION ..............................................................................................9-20

9.3.2 PHASOR ESTIMATION....................................................................................9-20

9.3.3 DISTANCE CHARACTERISTICS.....................................................................9-21

9.3.4 MEMORY POLARIZATION ..............................................................................9-25

9.3.5 DISTANCE ELEMENTS ANALYSIS.................................................................9-26

9.4 PHASE DISTANCE APPLIED TO POWER TRANSFORMERS

9.4.1 DESCRIPTION .................................................................................................9-30

9.4.2 EXAMPLE.........................................................................................................9-32

9.5 SINGLE-POLE TRIPPING

9.5.1 OVERVIEW ......................................................................................................9-34

9.5.2 PHASE SELECTION ........................................................................................9-37

9.5.3 COMMUNICATIONS CHANNELS FOR PILOT-AIDED SCHEMES.................9-38

9.5.4 PERMISSIVE ECHO SIGNALING....................................................................9-46

9.5.5 PILOT SCHEME / PHASE SELECTOR COORDINATION...............................9-47

9.5.6 CROSS-COUNTRY FAULT EXAMPLE............................................................9-48

9.6 FAULT LOCATOR

9.6.1 OVERVIEW ......................................................................................................9-49

9.6.2 MULTI-ENDED FAULT LOCATOR...................................................................9-49

9.6.3 SINGLE-ENDED FAULT LOCATOR ................................................................9-55

10. APPLICATION OF SETTINGS

10.1 CT REQUIREMENTS

10.1.1 INTRODUCTION ..............................................................................................10-1

10.1.2 CALCULATION EXAMPLE 1............................................................................10-1

10.1.3 CALCULATION EXAMPLE 2............................................................................10-2

10.2 CURRENT DIFFERENTIAL (87L) SETTINGS

10.2.1 INTRODUCTION ..............................................................................................10-3

10.2.2 CURRENT DIFFERENTIAL PICKUP ...............................................................10-3

10.2.3 CURRENT DIFF RESTRAINT 1.......................................................................10-3

10.2.4 CURRENT DIFF RESTRAINT 2.......................................................................10-3

10.2.5 CURRENT DIFF BREAK POINT ......................................................................10-3

10.2.6 CT TAP .............................................................................................................10-4

10.2.7 BREAKER-AND-A-HALF..................................................................................10-6

10.2.8 DISTRIBUTED BUS PROTECTION.................................................................10-9

10.3 CHANNEL ASYMMETRY COMPENSATION USING GPS

10.3.1 DESCRIPTION ...............................................................................................10-10

10.3.2 COMPENSATION METHOD 1 .......................................................................10-10

10.3.3 COMPENSATION METHOD 2 .......................................................................10-11

10.3.4 COMPENSATION METHOD 3 .......................................................................10-11

10.4 DISTANCE BACKUP/SUPERVISION

10.4.1 DESCRIPTION ...............................................................................................10-13

10.4.2 PHASE DISTANCE ........................................................................................10-14

10.4.3 GROUND DISTANCE.....................................................................................10-15

10.5 PROTECTION SIGNALING SCHEMES

10.5.1 OVERVIEW ....................................................................................................10-17

10.5.2 DIRECT UNDER-REACHING TRANSFER TRIP (DUTT)..............................10-17

10.5.3 PERMISSIVE UNDER-REACHING TRANSFER TRIP (PUTT)......................10-17

10.5.4 PERMISSIVE OVER-REACHING TRANSFER TRIP (POTT)........................10-17

10.5.5 HYBRID POTT SCHEME (HYB-POTT)..........................................................10-18

10.5.6 DIRECTIONAL COMPARISON BLOCKING...................................................10-19

10.5.7 DIRECTIONAL COMPARISON UNBLOCKING .............................................10-20

10.6 SERIES COMPENSATED LINES

10.6.1 DISTANCE SETTINGS ON SERIES COMPENSATED LINES......................10-22

10.6.2 GROUND DIRECTIONAL OVERCURRENT ..................................................10-23

10.7 LINES WITH TAPPED TRANSFORMERS

10.7.1 DESCRIPTION ...............................................................................................10-24

10.7.2 TRANSFORMER LOAD CURRENTS ............................................................10-24

10.7.3 LV-SIDE FAULTS ...........................................................................................10-25

10.7.4 EXTERNAL GROUND FAULTS .....................................................................10-25

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10.8 INSTANTANEOUS ELEMENTS

10.8.1 INSTANTANEOUS ELEMENT ERROR DURING L90 SYNCHRONIZATION

....................................................................................................................... 10-26

10.9 PHASE DISTANCE THROUGH POWER TRANSFORMERS

10.9.1 PHASE DISTANCE PROTECTION ............................................................... 10-27

10.9.2 EXAMPLE ...................................................................................................... 10-28

11. COMMISSIONING 11.1 TESTING

11.1.1 CHANNEL TESTING ....................................................................................... 11-1

11.1.2 CLOCK SYNCHRONIZATION TESTS ............................................................ 11-2

11.1.3 CURRENT DIFFERENTIAL ............................................................................. 11-3

11.1.4 LOCAL-REMOTE RELAY TESTS ................................................................... 11-4

A. FLEXANALOG AND

FLEXINTEGER PARAMETERS

B. MODBUS

COMMUNICATIONS

A.1 PARAMETER LISTS

A.1.1 FLEXANALOG ITEMS .......................................................................................A-1

A.1.2 FLEXINTEGER ITEMS ....................................................................................A-15

B.1 MODBUS RTU PROTOCOL

B.1.1 INTRODUCTION................................................................................................B-1

B.1.2 PHYSICAL LAYER.............................................................................................B-1

B.1.3 DATA LINK LAYER............................................................................................B-1

B.1.4 CRC-16 ALGORITHM........................................................................................B-2

B.2 MODBUS FUNCTION CODES

B.2.1 SUPPORTED FUNCTION CODES ...................................................................B-3

B.2.2 READ ACTUAL VALUES OR SETTINGS (FUNCTION CODE 03/04H) ...........B-3

B.2.3 EXECUTE OPERATION (FUNCTION CODE 05H) ...........................................B-4

B.2.4 STORE SINGLE SETTING (FUNCTION CODE 06H).......................................B-4

B.2.5 STORE MULTIPLE SETTINGS (FUNCTION CODE 10H) ................................B-5

B.2.6 EXCEPTION RESPONSES............................................................................... B-5

B.3 FILE TRANSFERS

B.3.1 OBTAINING RELAY FILES VIA MODBUS........................................................B-6

B.3.2 MODBUS PASSWORD OPERATION ............................................................... B-7

B.4 MEMORY MAPPING

B.4.1 MODBUS MEMORY MAP .................................................................................B-9

B.4.2 DATA FORMATS .............................................................................................B-80

C. IEC 61850

COMMUNICATIONS

C.1 OVERVIEW

C.1.1 INTRODUCTION................................................................................................C-1

C.1.2 COMMUNICATION PROFILES .........................................................................C-1

C.2 SERVER DATA ORGANIZATION

C.2.1 OVERVIEW........................................................................................................C-2

C.2.2 GGIO1: DIGITAL STATUS VALUES .................................................................C-2

C.2.3 GGIO2: DIGITAL CONTROL VALUES..............................................................C-2

C.2.4 GGIO3: DIGITAL STATUS AND ANALOG VALUES FROM RECEIVED GOOSE

DATA..................................................................................................................C-2

C.2.5 GGIO4: GENERIC ANALOG MEASURED VALUES .........................................C-2

C.2.6 MMXU: ANALOG MEASURED VALUES...........................................................C-3

C.2.7 PROTECTION AND OTHER LOGICAL NODES...............................................C-3

C.3 SERVER FEATURES AND CONFIGURATION

C.3.1 BUFFERED/UNBUFFERED REPORTING........................................................C-5

C.3.2 FILE TRANSFER ...............................................................................................C-5

C.3.3 TIMESTAMPS AND SCANNING .......................................................................C-5

GE Multilin L90 Line Current Differential System ix

TABLE OF CONTENTS

C.3.4 LOGICAL DEVICE NAME .................................................................................C-5

C.3.5 LOCATION ........................................................................................................C-5

C.3.6 LOGICAL NODE NAME PREFIXES..................................................................C-6

C.3.7 CONNECTION TIMING.....................................................................................C-6

C.3.8 NON-IEC 61850 DATA...................................................................................... C-6

C.3.9 COMMUNICATION SOFTWARE UTILITIES.....................................................C-6

C.4 GENERIC SUBSTATION EVENT SERVICES: GSSE AND GOOSE

C.4.1 OVERVIEW .......................................................................................................C-7

C.4.2 GSSE CONFIGURATION..................................................................................C-7

C.4.3 FIXED GOOSE.................................................................................................. C-7

C.4.4 CONFIGURABLE GOOSE ................................................................................C-7

C.4.5 ETHERNET MAC ADDRESS FOR GSSE/GOOSE ........................................C-10

C.4.6 GSSE ID AND GOOSE ID SETTINGS............................................................C-10

C.5 IEC 61850 IMPLEMENTATION VIA ENERVISTA UR SETUP

C.5.1 OVERVIEW .....................................................................................................C-11

C.5.2 CONFIGURING IEC 61850 SETTINGS ..........................................................C-12

C.5.3 ABOUT ICD FILES ..........................................................................................C-13

C.5.4 CREATING AN ICD FILE WITH ENERVISTA UR SETUP.............................. C-17

C.5.5 ABOUT SCD FILES.........................................................................................C-17

C.5.6 IMPORTING AN SCD FILE WITH ENERVISTA UR SETUP........................... C-20

C.6 ACSI CONFORMANCE

C.6.1 ACSI BASIC CONFORMANCE STATEMENT ................................................ C-22

C.6.2 ACSI MODELS CONFORMANCE STATEMENT............................................C-22

C.6.3 ACSI SERVICES CONFORMANCE STATEMENT .........................................C-23

C.7 LOGICAL NODES

C.7.1 LOGICAL NODES TABLE ............................................................................... C-26

D. IEC 60870-5-104

COMMUNICATIONS

D.1 IEC 60870-5-104

D.1.1 INTEROPERABILITY DOCUMENT...................................................................D-1

D.1.2 POINT LIST ....................................................................................................... D-9

E. DNP COMMUNICATIONS E.1 DEVICE PROFILE DOCUMENT

E.1.1 DNP V3.00 DEVICE PROFILE .......................................................................... E-1

E.1.2 IMPLEMENTATION TABLE .............................................................................. E-4

E.2 DNP POINT LISTS

E.2.1 BINARY INPUT POINTS ................................................................................... E-8

E.2.2 BINARY AND CONTROL RELAY OUTPUT...................................................... E-9

E.2.3 COUNTERS.....................................................................................................E-10

E.2.4 ANALOG INPUTS............................................................................................ E-11

F. MISCELLANEOUS F.1 CHANGE NOTES

F.1.1 REVISION HISTORY......................................................................................... F-1

F.1.2 CHANGES TO THE L90 MANUAL .................................................................... F-2

F.2 ABBREVIATIONS

F.2.1 STANDARD ABBREVIATIONS ......................................................................... F-5

F.3 WARRANTY

F.3.1 GE MULTILIN WARRANTY............................................................................... F-9

x L90 Line Current Differential System GE Multilin

0 BATTERY DISPOSAL 0.1 BATTERY DISPOSAL

0 BATTERY DISPOSAL 0.1BATTERY DISPOSAL

EN Battery Disposal

This product contains a battery that cannot be disposed of as unsorted municipal waste in the European Union. See the product documentation for specific battery information. The battery is marked with this symbol, which may include lettering to indicate cadmium (Cd), lead (Pb), or mercury (Hg). For proper recycling return the battery to your supplier or to a designated collection point . For more information see: www.recyclethis.info.

CS Nakládání s bateriemi

Tento produkt obsahuje baterie, které nemohou být zneškodněny v Evropské unii jako netříděný komunální odpadu. Viz dokumentace k produktu pro informace pro konkrétní baterie. Baterie je označena tímto symbolem, který může zahrnovat i uvedena písmena, kadmium (Cd), olovo (Pb), nebo rtuť (Hg). Pro správnou recyklaci baterií vraťte svémudodavateli nebo na určeném sběrném místě. Pro více informací viz: www.recyclethis.info.

DA Batteri affald

Dette produkt indeholder et batteri som ikke kan bortskaffes sammen med almindeligt husholdningsaffald i Europa. Se produktinformation for specifikke informationer om batteriet . Batteriet er forsynet med indgraveret symboler for hvad batteriet indeholder: kadmium (Cd), bly (Pb) og kviksølv (Hg). Europæiske brugere af elektrisk udstyr skal aflevere kasserede produkter til genbrug eller til leverandøren. Yderligere oplysninger findes på webstedet www.recyclethis.info.

DE Entsorgung von Batterien

Dieses Produkt beinhaltet eine Batterie, die nicht als unsortierter städtischer Abfall in der europäischen Union entsorgt werden darf. Beachten Sie die spezifischen Batterie-informationen in der Produktdokumentation. Die Batterie ist mit diesem Symbol gekennzeichnet, welches auch Hinweise auf möglicherweise enthaltene Stoffe wie Kadmium (Cd), Blei (Pb) oder Quecksilber (Hektogramm) darstellt. Für die korrekte Wiederverwertung bringen Sie diese Batterie zu Ihrem lokalen Lieferanten zurück oder entsorgen Sie das Produkt an den gekennzeichneten Sammelstellen. Weitere Informationen hierzu finden Sie auf der folgenden Website: www.recyclethis.info.

EL Απόρριψη μπαταριών

Αυτό το προϊόν περιέχει μια μπαταρία που δεν πρέπει να απορρίπτεται σε δημόσια συστήματα απόρριψης στην Ευρωπαϊκή Κοινότητα. ∆είτε την τεκμηρίωση του προϊόντος για συγκεκριμένες πληροφορίες που αφορούν τη μπαταρία. Η μπαταρία είναι φέρει σήμανση με αυτό το σύμβολο, το οποίο μπορεί να περιλαμβάνει γράμματα για να δηλώσουν το κάδμιο (Cd), τον υδράργυρο (Hg). Για την κατάλληλη ανακύκλωση επιστρέψτε την μπαταρία στον προμηθευτή σας ή σε καθορισμένο σημείο συλλογής. Για περισσότερες πληροφορίες δείτε: www.recyclethis.info.

μόλυβδο (Pb), ή τον

ES Eliminacion de baterias

Este producto contiene una batería que no se pueda eliminar como basura normal sin clasificar en la Unión Europea. Examine la documentación del producto para la información específica de la batería. La batería se marca con este símbolo, que puede incluir siglas para indicar el cadmio (Cd), el plomo (Pb), o el mercurio (Hg ). Para el reciclaje apropiado, devuelva este producto a su distribuidor ó deshágase de él en los puntos de reciclaje designados. Para mas información : wwwrecyclethis.info.

ET Patareide kõrvaldamine

Käesolev toode sisaldab patareisid, mida Euroopa Liidus ei tohi kõrvaldada sorteerimata olmejäätmetena. Andmeid patareide kohta vaadake toote dokumentatsioonist. Patareid on märgistatud käesoleva sümboliga, millel võib olla kaadmiumi (Cd), pliid (Pb) või elavhõbedat (Hg) tähistavad tähed. Nõuetekohaseks ringlusse võtmiseks tagastage patarei tarnijale või kindlaksmääratud vastuvõtupunkti. Lisainformatsiooni saab Internetist aadressil: www.recyclethis.info.

FI Paristoje ja akkujen hävittäminen

Tuote sisältää pariston, jota ei saa hävittää Euroopan Unionin alueella talousjätteen mukana. Tarkista tuoteselosteesta tuotteen tiedot. Paristo on merkitty tällä symbolilla ja saattaa sisältää cadmiumia (Cd), lyijyä (Pb) tai elohopeaa (Hg). Oikean kierrätystavan varmistamiseksi palauta tuote paikalliselle jälleenmyyjälle tai palauta se paristojen keräyspisteeseen. Lisätietoja sivuilla www.recyclethis.info.

FR Élimination des piles

Ce produit contient une batterie qui ne peuvent être éliminés comme déchets municipaux non triés dans l'Union européenne. Voir la documentation du produit au niveau des renseignements sur la pile. La batterie est marqué de ce symbole, qui comprennent les indications cadmium (Cd), plomb (Pb), ou mercure (Hg). Pour le recyclage, retourner la batterie à votre fournisseur ou à un point de collecte. Pour plus d'informations, voir: www.recyclethis.info.

HU Akkumulátor hulladék kezelése

Ezen termék akkumulátort tartalmaz, amely az Európai Unión belül csak a kijelölt módon és helyen dobható ki. A terméken illetve a mellékelt ismertetőn olvasható a kadmium (Cd), ólom (Pb) vagy higany (Hg) tartalomra utaló betűjelzés. A hulladék akkumulátor leadható a termék forgalmazójánál új akkumulátor vásárlásakor, vagy a kijelölt elektronikai hulladékudvarokban. További információ a www.recyclethis.info oldalon.

GE Multilin L90 Line Current Differential System xi

0.1 BATTERY DISPOSAL 0 BATTERY DISPOSAL

IT Smaltimento batterie

Questo prodotto contiene una batteria che non può essere smaltita nei comuni contenitori per lo smaltimento rifiuti, nell' Unione

Europea. Controllate la documentazione del prodotto per le informazioni specifiche sulla batteria. La batteria è contrassegnata con questo simbolo e può includere alcuni caratteri ad indicare la presenza di cadmio (Cd), piombo (Pb) oppure mercurio (Hg). Per il corretto smaltimento, potete restituirli al vostro fornitore locale, oppure rivolgervi e consegnarli presso i centri di raccolta preposti. Per maggiori informazioni vedere: ww.recyclethis.info.

LT Baterijų šalinimas

Šios įrangos sudėtyje yra baterijų, kurias draudžiama šalinti Europos Sąjungos viešose nerūšiuotų atliekų šalinimo sistemose. Informaciją apie baterijas galite rasti įrangos techninėje dokumentacijoje. Baterijos žymimos šiuo simboliu, papildomai gali būti nurodoma kad baterijų sudėtyje yra kadmio (Cd), švino (Pb) ar gyvsidabrio (Hg). Eksploatavimui nebetinkamas baterijas pristatykite į tam skirtas surinkimo vietas arba grąžinkite jas tiesioginiam tiekėjui, kad jos būtų tinkamai utilizuotos. Daugiau informacijos rasite šioje interneto svetainėje: www.recyclethis.info.

LV Bateriju likvidēšana

Šis produkts satur bateriju vai akumulatoru, kuru nedrīkst izmest Eiropas Savienībā esošajās sadzīves atkritumu sistēmās. Sk. produkta dokumentācijā, kur ir norādīta konkrēta informācija par bateriju vai akumulatoru. Baterijas vai akumulatora marķējumā ir šis simbols, kas var ietvert burtus, kuri norāda kadmiju (Cd), svinu (Pb) vai dzīvsudrabu (Hg). Pēc ekspluatācijas laika beigām baterijas vai akumulatori jānodod piegādātājam vai specializētā bateriju savākšanas vietā. Sīkāku informāciju var iegūt vietnē: www.recyclethis.info.

NL Verwijderen van baterijen

Dit product bevat een batterij welke niet kan verwijdert worden via de gemeentelijke huisvuilscheiding in de Europese Gemeenschap. Gelieve de product documentatie te controleren voor specifieke batterij informatie. De batterijen met deze label kunnen volgende indictaies bevatten cadium (Cd), lood (Pb) of kwik (Hg). Voor correcte vorm van kringloop, geef je de producten terug aan jou locale leverancier of geef het af aan een gespecialiseerde verzamelpunt. Meer informatie vindt u op de volgende website: www.recyclethis.info.

NO Retur av batteri

Dette produkt inneholder et batteri som ikke kan kastes med usortert kommunalt søppel i den Europeiske Unionen. Se produktdokumentasjonen for spesifikk batteriinformasjon. Batteriet er merket med dette symbolet som kan inkludere symboler for å indikere at kadmium (Cd), bly (Pb), eller kvikksølv (Hg) forekommer. Returner batteriet til leverandøren din eller til et dedikert oppsamlingspunkt for korrekt gjenvinning. For mer informasjon se: www.recyclethis.info.

PL Pozbywanie się zużytych baterii

Ten produkt zawiera baterie, które w Unii Europejskiej mogą być usuwane tylko jako posegregowane odpady komunalne. Dokładne informacje dotyczące użytych baterii znajdują się w dokumentacji produktu. Baterie oznaczone tym symbolem mogą zawierać dodatkowe oznaczenia literowe wskazujące na zawartość kadmu (Cd), ołowiu (Pb) lub rtęci (Hg). Dla zapewnienia właściwej utylizacji, należy zwrócić baterie do dostawcy albo do wyznaczonego punktu zbiórki. Więcej informacji można znaleźć na stronie internetowej www.recyclethis.info.

PT Eliminação de Baterias

Este produto contêm uma bateria que não pode ser considerado lixo municipal na União Europeia. Consulte a documentação do produto para obter informação específica da bateria. A bateria é identificada por meio de este símbolo, que pode incluir a rotulação para indicar o cádmio (Cd), chumbo (Pb), ou o mercúrio (hg). Para uma reciclagem apropriada envie a bateria para o seu fornecedor ou para um ponto de recolha designado. Para mais informação veja: www.recyclethis.info.

RU Утилизация батарей

Согласно европейской директиве об отходах электрического и электронного оборудования, продукты, содержащие батареи, нельзя утилизировать как обычные отходы на территории ЕС. Более подробную информацию вы найдете в документации к продукту. На этом символе могут присутствовать буквы, которые означают, что батарея собержит кадмий (Cd), свинец (Pb) или ртуть (Hg). Для надлежащей утилизации по окончании срока поставщику или сдать в специальный пункт приема. Подробности можно найти на веб-сайте: www.recyclethis.info.

эксплуатации пользователь должен возвратить батареи локальному

SK Zaobchádzanie s batériami

Tento produkt obsahuje batériu, s ktorou sa v Európskej únii nesmie nakladať ako s netriedeným komunálnym odpadom. Dokumentácia k produktu obsahuje špecifické informácie o batérii. Batéria je označená týmto symbolom, ktorý môže obsahovať písmená na označenie kadmia (Cd), olova (Pb), alebo ortuti (Hg). Na správnu recykláciu vráťte batériu vášmu lokálnemu dodávateľovi alebo na určené zberné miesto. Pre viac informácii pozrite: www.recyclethis.info.

SL Odlaganje baterij

Ta izdelek vsebuje baterijo, ki je v Evropski uniji ni dovoljeno odstranjevati kot nesortiran komunalni odpadek. Za posebne informacije o bateriji glejte dokumentacijo izdelka. Baterija je označena s tem simbolom, ki lahko vključuje napise, ki označujejo kadmij (Cd), svinec (Pb) ali živo srebro (Hg). Za ustrezno recikliranje baterijo vrnite dobavitelju ali jo odstranite na določenem zbirališču. Za več informacij obiščite spletno stran: www.recyclethis.info.

SV Kassering av batteri

Denna produkt innehåller ett batteri som inte får kastas i allmänna sophanteringssytem inom den europeiska unionen. Se produktdokumentationen för specifik batteriinformation. Batteriet är märkt med denna symbol, vilket kan innebära att det innehåller kadmium (Cd), bly (Pb) eller kvicksilver (Hg). För korrekt återvinning skall batteriet returneras till leverantören eller till en därför avsedd deponering. För mer information, se: www.recyclethis.info.

xii L90 Line Current Differential System GE Multilin

0 BATTERY DISPOSAL 0.1 BATTERY DISPOSAL

TR Pil Geri Dönüşümü

Bu ürün Avrupa Birliği genel atık sistemlerine atılmaması gereken pil içermektedir. Daha detaylı pil bilgisi için ürünün kataloğunu inceleyiniz. Bu sembolle işaretlenmiş piller Kadmiyum(Cd), Kurşun(Pb) ya da Civa(Hg) içerebilir. Doğru geri dönüşüm için ürünü yerel tedarikçinize geri veriniz ya da özel işaretlenmiş toplama noktlarına atınız. Daha fazla bilgi için: www.recyclethis.info.

Global Contacts

North America 905-294-6222 Latin America +55 11 3614 1700 Europe, Middle East, Africa +(34) 94 485 88 00 Asia +86-21-2401-3208 India +91 80 41314617

From GE Part Number 1604-0021-A1, GE Publication Number GEK-113574

GE Multilin L90 Line Current Differential System xiii

0.1 BATTERY DISPOSAL 0 BATTERY DISPOSAL

xiv L90 Line Current Differential System GE Multilin

1 GETTING STARTED 1.1 IMPORTANT PROCEDURES

1 GETTING STARTED 1.1IMPORTANT PROCEDURES

Read this chapter to help guide you through the initial setup of your new L90 Line Current Differential System.

1.1.1 CAUTIONS AND WARNINGS

Before attempting to install or use the device, review all safety indicators in this document to help prevent injury, equipment damage, or downtime.

The following safety and equipment symbols are used in this document.

Indicates a hazardous situation which, if not avoided, will result in death or serious injury.

Indicates a hazardous situation which, if not avoided, could result in death or serious injury.

Indicates a hazardous situation which, if not avoided, could result in minor or moderate injury.

Indicates practices not related to personal injury.

a) GENERAL CAUTIONS AND WARNINGS

The following general safety precautions and warnings apply.

Ensure that all connections to the product are correct so as to avoid accidental risk of shock and/or fire, for example such as can arise from high voltage connected to low voltage terminals.

Follow the requirements of this manual, including adequate wiring size and type, terminal torque settings, voltage, current magnitudes applied, and adequate isolation/clearance in external wiring from high to low voltage circuits.

Use the device only for its intended purpose and application.

Ensure that all ground paths are uncompromised for safety purposes during device operation and service.

Ensure that the control power applied to the device, the AC current, and voltage input match the ratings specified on the relay nameplate. Do not apply current or voltage in excess of the specified limits.

Only qualified personnel are to operate the device. Such personnel must be thoroughly familiar with all safety cautions and warnings in this manual and with applicable country, regional, utility, and plant safety regulations.

Hazardous voltages can exist in the power supply and at the device connection to current transformers, voltage transformers, control, and test circuit terminals. Make sure all sources of such voltages are isolated prior to attempting work on the device.

Hazardous voltages can exist when opening the secondary circuits of live current transformers. Make sure that current transformer secondary circuits are shorted out before making or removing any connection to the current transformer (CT) input terminals of the device.

For tests with secondary test equipment, ensure that no other sources of voltages or currents are connected to such equipment and that trip and close commands to the circuit breakers or other switching apparatus are isolated, unless this is required by the test procedure and is specified by appropriate utility/plant procedure.

When the device is used to control primary equipment, such as circuit breakers, isolators, and other switching apparatus, all control circuits from the device to the primary equipment must be isolated while personnel are working on or around this primary equipment to prevent any inadvertent command from this device.

Use an external disconnect to isolate the mains voltage supply.

LED transmitters are classified as IEC 60825-1 Accessible Emission Limit (AEL) Class 1M. Class 1M devices are considered safe to the unaided eye. Do not view directly with optical instruments.

This product is rated to Class A emissions levels and is to be used in Utility, Substation Industrial environments. Not to be used near electronic devices rated for Class B levels.

Inspection Checklist

GE Multilin L90 Line Current Differential System 1-1

1.1 IMPORTANT PROCEDURES 1 GETTING STARTED

NOTE

1. Open the relay packaging and inspect the unit for physical damage.

2. View the rear nameplate and verify that the correct model has been ordered and delivered.

Figure 1–1: REAR NAMEPLATE (EXAMPLE)

3. Ensure that the following items are included:

• Instruction manual (if ordered)

• GE EnerVista™ CD (includes the EnerVista UR Setup software and manuals in PDF format)

• Mounting screws

For product information, instruction manual updates, and the latest software updates, visit the GE Digital Energy website at

http://www.gedigitalenergy.com

If there is any noticeable physical damage, or any of the contents listed are missing, please contact GE Digital Energy immediately.

GE DIGITAL ENERGY CONTACT INFORMATION AND CALL CENTER FOR PRODUCT SUPPORT:

GE Digital Energy 650 Markland Street Markham, Ontario Canada L6C 0M1

TELEPHONE: Worldwide +1 905 927 7070

Europe/Middle East/Africa +34 94 4854 88 54 North America toll-free 1 800 547 8629

FAX: +1 905 927 5098 EMAIL: multilin.tech@ge.com HOME PAGE: http://www.gedigitalenergy.com/multilin

1-2 L90 Line Current Differential System GE Multilin

1 GETTING STARTED 1.2 UR OVERVIEW

1.2UR OVERVIEW 1.2.1 INTRODUCTION TO THE UR

Historically, substation protection, control, and metering functions were performed with electromechanical equipment. This equipment was gradually replaced by analog equipment, most of which emulated the single-function approach of their electromechanical precursors. Both technologies required expensive cabling and auxiliary equipment to produce functioning systems.

Recently, digital electronic equipment has begun to provide protection, control, and metering functions. Initially, this equipment was either single function or had very limited multifunction capability, and it did not significantly reduce the cabling and auxiliary equipment required. However, recent digital relays are multifunctional, reducing cabling and auxiliaries significantly. These devices also transfer data to central control facilities and software using electronic communications. The functions performed have become so broad that many users now prefer the term Intelligent Electronic Device (IED).

It is obvious to station designers that the amount of cabling and auxiliary equipment installed can be even further reduced, to 20% to 70% of levels common in 1990, and achieve large cost reductions. This requires placing even more functions within the IEDs.

Users of power equipment are also interested in reducing cost by improving power quality and personnel productivity, and in increasing system reliability and efficiency. These objectives are realized through software that is used to perform functions at both the station and supervisory levels. The use of these systems is growing rapidly.

High-speed communication is required to meet the data transfer rates required by modern automatic control and monitoring systems. Very high speed communications are required to perform protection signaling with a performance target response time for a command signal between two IEDs, from transmission to reception, of less than 3 milliseconds. This has been established by the IEC 61850 standard.

IEDs with such capabilities also provide significantly more power system data than was available, enhanced operations and maintenance, and permit the use of adaptive system configuration for protection and control systems. This new generation of equipment is easily incorporated into automation systems, at both the station and enterprise levels. The GE Multilin Universal Relay (UR) series meets these goals.

1.2.2 HARDWARE ARCHITECTURE

a) UR BASIC DESIGN

The UR is a digital-based device containing a central processing unit (CPU) that handles multiple types of input and output signals. The UR device can communicate over a local area network (LAN) with an operator interface, a programming device, or another UR device.

Figure 1–2: UR CONCEPT BLOCK DIAGRAM

The CPU module contains firmware that provides protection elements in the form of logic algorithms, as well as programmable logic gates, timers, and latches for control features.

GE Multilin L90 Line Current Differential System 1-3

1.2 UR OVERVIEW 1 GETTING STARTED

Input elements accept a variety of analog or digital signals from the field. The UR isolates and converts these signals into

logic signals used by the relay.

Output elements convert and isolate the logic signals generated by the relay into digital or analog signals that can be used

to control field devices.

The software and unit are backwards-compatible with UR devices.

b) UR SIGNAL TYPES

The contact inputs and outputs are digital signals associated with connections to hard-wired contacts. Both ‘wet’ and ‘dry’ contacts are supported.

The virtual inputs and outputs are digital signals associated with UR-series internal logic signals. Virtual inputs include signals generated by the local user interface. The virtual outputs are outputs of FlexLogic™ equations used to customize the device. Virtual outputs can also serve as virtual inputs to FlexLogic equations.

The analog inputs and outputs are signals that are associated with transducers, such as Resistance Temperature Detec- tors (RTDs).

The CT and VT inputs refer to analog current transformer and voltage transformer signals used to monitor AC power lines. The UR-series relays support 1 A and 5 A CTs.

The remote inputs and outputs provide a means of sharing digital point state information between remote UR-series devices. The remote outputs interface to the remote inputs of other UR-series devices. Remote outputs are FlexLogic operands inserted into IEC 61850 GSSE and GOOSE messages.

The direct inputs and outputs provide a means of sharing digital point states between a number of UR-series IEDs over a dedicated fiber (single or multimode), RS422, or G.703 interface. No switching equipment is required as the IEDs are connected directly in a ring or redundant (dual) ring configuration. This feature is optimized for speed and intended for pilotaided schemes, distributed logic applications, or the extension of the input/output capabilities of a single relay chassis.

c) UR SCAN OPERATION

The UR-series devices operate in a cyclic scan fashion. The device reads the inputs into an input status table, solves the logic program (FlexLogic equation), and then sets each output to the appropriate state in an output status table. Any resulting task execution is priority interrupt-driven.

Figure 1–3: UR-SERIES SCAN OPERATION

1-4 L90 Line Current Differential System GE Multilin

1 GETTING STARTED 1.2 UR OVERVIEW

1.2.3 SOFTWARE ARCHITECTURE

The firmware (software embedded in the relay) is designed in functional modules that can be installed in any relay as required. This is achieved with object-oriented design and programming (OOD/OOP) techniques.

Object-oriented techniques involve the use of objects and classes. An object is defined as “a logical entity that contains both data and code that manipulates that data”. A class is the generalized form of similar objects. By using this concept, one can create a protection class with the protection elements as objects of the class, such as time overcurrent, instantaneous overcurrent, current differential, undervoltage, overvoltage, underfrequency, and distance. These objects represent completely self-contained software modules. The same object-class concept can be used for metering, input/output control, software interface, communications, or any functional entity in the system.

Employing OOD/OOP in the software architecture of the L90 achieves the same features as the hardware architecture: modularity, scalability, and flexibility. The application software for any UR-series device (for example, feeder protection, transformer protection, distance protection) is constructed by combining objects from the various functional classes. This results in a common interface across the UR series.

1.2.4 IMPORTANT CONCEPTS

As described above, the architecture of the UR-series relays differ from previous devices. To achieve a general understanding of this device, some sections of Chapter 5 are quite helpful. The most important functions of the relay are contained in “elements”. A description of the UR-series elements can be found in the Introduction to elements section in chapter 5. Examples of simple elements, and some of the organization of this manual, can be found in the Control elements section of chapter 5. An explanation of the use of inputs from CTs and VTs is in the Introduction to AC sources section in chapter 5. A description of how digital signals are used and routed within the relay is contained in the Introduction to FlexLogic section in chapter 5.

GE Multilin L90 Line Current Differential System 1-5

1.3 ENERVISTA UR SETUP SOFTWARE 1 GETTING STARTED

1.3ENERVISTA UR SETUP SOFTWARE 1.3.1 PC REQUIREMENTS

The faceplate keypad and display or the EnerVista UR Setup software can be used to communicate with the relay. The EnerVista UR Setup software interface is the preferred method to edit settings and view actual values because the computer monitor can display more information.

The minimum system requirements for the EnerVista UR Setup software are as follows:

• Pentium 4 (Core Duo recommended)

• Windows XP with Service Pack 2 (Service Pack 3 recommended), Windows 7, or Windows Server 2008 Release 2 64-bit

• 1 GB of RAM (2 GB recommended)

• 500 MB free hard drive space (1 GB recommended)

• 1024 x 768 display (1280 x 800 recommended)

The following qualified modems have been tested to be compliant with the L90 and the EnerVista UR Setup software:

• US Robotics external 56K FaxModem 5686

• US Robotics external Sportster 56K X2

• PCTEL 2304WT V.92 MDC internal modem

1.3.2 INSTALLATION

After ensuring the minimum requirements for using EnerVista UR Setup are met (previous section), install the EnerVista UR Setup from the GE EnerVista CD. Or download the UR EnerVista software from http://www.gedigitalenergy.com/multilin and install it.

1. Insert the GE EnerVista CD into your CD-ROM drive.

2. Click the Install Now button and follow the installation instructions to install the EnerVista software.

3. When installation is complete, start the EnerVista Launchpad application.

4. Click the IED Setup section of the Launch Pad window.

5. In the EnerVista Launch Pad window, click the Add Product button and select the appropriate product, shown as follows. Select the "Web" option to ensure the most recent software release, or select "CD" if you do not have a web con-

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1 GETTING STARTED 1.3 ENERVISTA UR SETUP SOFTWARE

nection, then click the Add Now button to list software items for the product. EnerVista Launchpad then obtains the software from the Internet or CD and automatically starts the installation program.

6. Select the complete path, including the new directory name, where the EnerVista UR Setup is to be installed.

7. Click on Next to begin the installation. The files are installed in the directory indicated, and the installation program

automatically creates icons and adds EnerVista UR Setup to the Windows start menu.

8. Click Finish to complete the installation. The UR-series device is added to the list of installed IEDs in the EnerVista

Launchpad window, as shown.

1.3.3 CONFIGURING THE L90 FOR SOFTWARE ACCESS

a) OVERVIEW

The user can connect remotely to the L90 through the rear RS485 port or the rear Ethernet port with a computer running the EnerVista UR Setup software. The L90 can also be accessed locally with a laptop computer through the front panel RS232 port or the rear Ethernet port using the Quick Connect feature.

• To configure the L90 for remote access via the rear RS485 port, see the Configuring Serial Communications section.

GE Multilin L90 Line Current Differential System 1-7

1.3 ENERVISTA UR SETUP SOFTWARE 1 GETTING STARTED

• To configure the L90 for remote access via the rear Ethernet port, see the Configuring Ethernet Communications sec-

tion. An Ethernet module must be specified at the time of ordering.

• To configure the L90 for local access with a laptop through either the front RS232 port or rear Ethernet port, see the Using the Quick Connect Feature section.

b) CONFIGURING SERIAL COMMUNICATIONS

Before starting, verify that the serial cable is properly connected to the RS485 terminal on the back of the device. The faceplate RS232 port is intended for local use and is not described in this section; see the Using the Quick Connect Feature section.

A GE Multilin F485 converter (or compatible RS232-to-RS485 converter) is required. Refer to the F485 instruction manual for details.

1. Verify that the latest version of the EnerVista UR Setup software is installed (available from the GE EnerVista CD or online from http://www.gedigitalenergy.com/multilin

2. Select the “UR” device from the EnerVista Launchpad to start EnerVista UR Setup.

3. Click the Device Setup button to open the Device Setup window and click the Add Site button to define a new site.

4. Enter a site name in the “Site Name” field. Optionally add a short description of the site along with the display order of devices defined for the site. In this example, we use “Location 1” as the site name. Click the OK button when complete. The new site appears in the upper-left list in the EnerVista UR Setup window.

5. Click the Device Setup button, then select the new site to re-open the Device Setup window.

6. Click the Add Device button to define the new device.

7. Enter a name in the "Device Name” field and a description (optional) of the site.

8. Select “Serial” from the Interface drop-down list. This displays a number of interface parameters that must be entered for serial communications.

). See the Software Installation section if not already installed.

Figure 1–4: CONFIGURING SERIAL COMMUNICATIONS

9. Enter the relay slave address, COM port, baud rate, and parity settings from the

MUNICATIONS

1-8 L90 Line Current Differential System GE Multilin

 SERIAL PORTS menu in their respective fields.

SETTINGS  PRODUCT SETUP  COM-

1 GETTING STARTED 1.3 ENERVISTA UR SETUP SOFTWARE

10. Click the Read Order Code button to connect to the L90 device and upload the order code. If a communications error

occurs, ensure that the EnerVista UR Setup serial communications values entered in the previous step correspond to the relay setting values.

11. Click the OK button when the relay order code has been received. The new device is added to the Site List window (or

Online window) located in the top left corner of the main EnerVista UR Setup window.

The device has now been configured for RS232 communications. Proceed to the Connecting to the L90 section to begin communication.

c) CONFIGURING ETHERNET COMMUNICATIONS

Before starting, verify that the Ethernet network cable is properly connected to the Ethernet port on the back of the relay. To setup the relay for Ethernet communications, you define a Site, then add the relay as a Device at that site.The computer and UR device must be on the same subnet.

1. Verify that the latest version of the EnerVista UR Setup software is installed (available from the GE EnerVista CD or

online from http://www.gedigitalenergy.com/multilin

2. Select the “UR” device from the EnerVista Launchpad to start EnerVista UR Setup.

3. Click the Device Setup button to open the Device Setup window, then click the Add Site button to define a new site.

4. Enter the desired site name in the “Site Name” field. If desired, a short description of site can also be entered along

with the display order of devices defined for the site. In this example, we use “Location 2” as the site name. Click the OK button when complete.

5. The new site appears in the upper-left list in the EnerVista UR Setup window. Click the Device Setup button then

select the new site to re-open the Device Setup window.

6. Click the Add Device button to define the new device.

7. Enter the desired name in the “Device Name” field and a description (optional) of the site.

8. Select “Ethernet” from the Interface drop-down list. This displays a number of interface parameters that must be

entered for proper Ethernet functionality.

). See the Software Installation section for installation details.

Figure 1–5: CONFIGURING ETHERNET COMMUNICATIONS

9. Enter the relay IP address specified in the

ADDRESS in the “IP Address” field.

GE Multilin L90 Line Current Differential System 1-9

SETTINGS  PRODUCT SETUP  COMMUNICATIONS  NETWORK  IP

1.3 ENERVISTA UR SETUP SOFTWARE 1 GETTING STARTED

10. Enter the relay slave address and Modbus port address values from the respective settings in the SETTINGS  PROD-

UCT SETUP  COMMUNICATIONS  MODBUS PROTOCOL menu.

11. Click the Read Order Code button to connect to the L90 device and upload the order code. If an communications error occurs, ensure that the three EnerVista UR Setup values entered in the previous steps correspond to the relay setting values.

12. Click OK when the relay order code has been received. The new device is added to the Site List window (or Online window) located in the top left corner of the main EnerVista UR Setup window.

The Site Device has now been configured for Ethernet communications. Proceed to the Connecting to the L90 section to begin communications.

1.3.4 USING THE QUICK CONNECT FEATURE

a) USING QUICK CONNECT VIA THE FRONT PANEL RS232 PORT

Before starting, verify that the serial cable is properly connected from the computer to the front panel RS232 port with a straight-through 9-pin to 9-pin RS232 cable.

1. Verify that the latest version of the EnerVista UR Setup software is installed (available from the GE EnerVista CD or online from http://www.gedigitalenergy.com/multilin

2. Select the “UR” device from the EnerVista Launchpad to start EnerVista UR Setup.

3. Click the Quick Connect button to open the Quick Connect dialog box.

). See the Software Installation section if not already installed.

4. Select the Serial interface and the correct COM Port, then click Connect.

5. The EnerVista UR Setup software creates a site named “Quick Connect” with a corresponding device also named “Quick Connect” and displays them at the upper-left of the screen. Expand the sections to view data directly from the L90 device.

Each time that the EnerVista UR Setup software is initialized, click the Quick Connect button to establish direct communications to the L90 device. This ensures that configuration of the EnerVista UR Setup software matches the L90 model number.

b) USING QUICK CONNECT VIA THE REAR ETHERNET PORTS

To use the Quick Connect feature to access the L90 from a computer through Ethernet, first assign an IP address to the relay from the front panel keyboard.

1. Press the MENU key until the SETTINGS menu displays.

2. Navigate to the

3. Enter an IP address, for example “1.1.1.1,” and select the ENTER key to save the value.

4. In the same menu, select the

5. Enter a subnet IP address, for example “255.0.0.0,” and press the ENTER key to save the value.

SETTINGS  PRODUCT SETUP  COMMUNICATIONS  NETWORK  IP ADDRESS setting.

SUBNET IP MASK setting.

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1 GETTING STARTED 1.3 ENERVISTA UR SETUP SOFTWARE

842799A1.CDR

END 1 END 2 Pin Wire color Diagram Pin Wire color Diagram

1 White/orange 1 White/green 2 Orange 2 Green

3 White/green 3 White/orange 4 Blue 4 Blue 5 White/blue 5 White/blue 6 Green 6 Orange 7 White/brown 7 White/brown 8 Brown 8 Brown

Next, use an Ethernet cross-over cable to connect the computer to the rear Ethernet port. In case you need it, the figure shows the pinout for an Ethernet cross-over cable.

Figure 1–6: ETHERNET CROSS-OVER CABLE PIN LAYOUT

Now, assign the computer an IP address compatible with the relay’s IP address.

1. From the Windows desktop, right-click the My Network Places icon and select Properties to open the network con-

nections window.

2. Right-click the Local Area Connection icon and select Properties.

GE Multilin L90 Line Current Differential System 1-11

1.3 ENERVISTA UR SETUP SOFTWARE 1 GETTING STARTED

3. Select the Internet Protocol (TCP/IP) item from the list, and click the Properties button.

4. Click the “Use the following IP address” box.

5. Enter an IP address with the first three numbers the same as the IP address of the L90 relay and the last number different (in this example, 1.1.1.2).

6. Enter a subnet mask equal to the one set in the L90 (in this example, 255.0.0.0).

7. Click the OK button to save the values.

Before continuing, test the Ethernet connection.

1. Open a Windows console window by selecting Start > Run from the Windows Start menu and typing “cmd”.

2. Type the following command, substituting the IP address of 1.1.1.1 with yours:

C:\WINNT>ping 1.1.1.1

3. If the connection is successful, the system returns four replies similar to the following:

Pinging 1.1.1.1 with 32 bytes of data:

Reply from 1.1.1.1: bytes=32 time<10ms TTL=255 Reply from 1.1.1.1: bytes=32 time<10ms TTL=255 Reply from 1.1.1.1: bytes=32 time<10ms TTL=255 Reply from 1.1.1.1: bytes=32 time<10ms TTL=255

Ping statistics for 1.1.1.1:

Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),

Approximate round trip time in milliseconds:

Minimum = 0ms, Maximum = 0ms, Average = 0 ms

4. Note that the values for time and TTL vary depending on local network configuration.

5. If the following sequence of messages appears when entering the

C:\WINNT>ping 1.1.1.1 command:

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1 GETTING STARTED 1.3 ENERVISTA UR SETUP SOFTWARE

Pinging 1.1.1.1 with 32 bytes of data:

Request timed out. Request timed out. Request timed out. Request timed out.

Ping statistics for 1.1.1.1:

Packets: Sent = 4, Received = 0, Lost = 4 (100% loss),

Approximate round trip time in milliseconds:

Minimum = 0ms, Maximum = 0ms, Average = 0 ms

Pinging 1.1.1.1 with 32 bytes of data:

verify the physical connection between the L90 and the laptop computer, and double-check the programmed IP address in the

6. If the following sequence of messages appears when entering the

Pinging 1.1.1.1 with 32 bytes of data:

Hardware error. Hardware error. Hardware error. Hardware error.

Ping statistics for 1.1.1.1:

Approximate round trip time in milliseconds:

Pinging 1.1.1.1 with 32 bytes of data:

PRODUCT SETUP  COMMUNICATIONS  NETWORK  IP ADDRESS setting, then repeat step 2.

C:\WINNT>ping 1.1.1.1 command:

Packets: Sent = 4, Received = 0, Lost = 4 (100% loss),

Minimum = 0ms, Maximum = 0ms, Average = 0 ms

verify the physical connection between the L90 and the laptop computer, and double-check the programmed IP address in the

7. If the following sequence of messages appears when entering the

Pinging 1.1.1.1 with 32 bytes of data:

Destination host unreachable. Destination host unreachable. Destination host unreachable. Destination host unreachable.

Ping statistics for 1.1.1.1:

Approximate round trip time in milliseconds:

Pinging 1.1.1.1 with 32 bytes of data:

PRODUCT SETUP  COMMUNICATIONS  NETWORK  IP ADDRESS setting, then repeat step 2.

C:\WINNT>ping 1.1.1.1 command:

Packets: Sent = 4, Received = 0, Lost = 4 (100% loss),

Minimum = 0ms, Maximum = 0ms, Average = 0 ms

verify the IP address is programmed in the local computer by entering the ipconfig command in the command window.

C:\WINNT>ipconfig

Windows 2000 IP Configuration

Ethernet adapter <F4FE223E-5EB6-4BFB-9E34-1BD7BE7F59FF>:

Connection-specific DNS suffix. . :

IP Address. . . . . . . . . . . . : 0.0.0.0

Subnet Mask . . . . . . . . . . . : 0.0.0.0

Default Gateway . . . . . . . . . :

Ethernet adapter Local Area Connection:

Connection-specific DNS suffix . :

IP Address. . . . . . . . . . . . : 1.1.1.2

Subnet Mask . . . . . . . . . . . : 255.0.0.0

Default Gateway . . . . . . . . . :

C:\WINNT>

It can be necessary to restart the computer for the change in IP address to take effect (Windows 98 or NT).

GE Multilin L90 Line Current Differential System 1-13

1.3 ENERVISTA UR SETUP SOFTWARE 1 GETTING STARTED

Before using the Quick Connect feature through the Ethernet port, disable any configured proxy settings in Internet Explorer.

1. Start the Internet Explorer software.

2. Select the Tools > Internet Options menu item and click the Connections tab.

3. Click on the LAN Settings button to open the following window.

4. Ensure that the “Use a proxy server for your LAN” box is not checked.

If this computer is used to connect to the Internet, re-enable any proxy server settings after the laptop has been disconnected from the L90 relay.

1. Start the Internet Explorer software.

2. Select the “UR” device from the EnerVista Launchpad to start EnerVista UR Setup.

3. Click the Quick Connect button to open the Quick Connect dialog box.

4. Select the Ethernet interface and enter the IP address assigned to the L90, then click the Connect button. The EnerVista UR Setup software creates a site named “Quick Connect” with a corresponding device also named “Quick Connect” and displays them at the upper-left of the screen.

5. Expand the sections to view data directly from the L90 device.

Each time the EnerVista UR Setup software is initialized, click the Quick Connect button to establish direct communications to the L90. This ensures that configuration of the EnerVista UR Setup software matches the L90 model number.

When direct communications with the L90 via Ethernet is complete, make the following changes:

1. From the Windows desktop, right-click the My Network Places icon and select Properties to open the network connections window.

2. Right-click the Local Area Connection icon and select the Properties item.

3. Select the Internet Protocol (TCP/IP) item from the list provided and click the Properties button.

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1 GETTING STARTED 1.3 ENERVISTA UR SETUP SOFTWARE

4. Set the computer to “Obtain a relay address automatically” as shown.

If this computer is used to connect to the Internet, re-enable any proxy server settings after the computer has been disconnected from the L90 relay.

AUTOMATIC DISCOVERY OF ETHERNET DEVICES

The EnerVista UR Setup software can automatically discover and communicate to all UR-series IEDs located on an Ethernet network.

Using the Quick Connect feature, a single click of the mouse triggers the software to automatically detect any UR-series relays located on the network. The EnerVista UR Setup software then proceeds to configure all settings and order code options in the Device Setup menu. This feature allows the user to identify and interrogate all UR-series devices at a location.

GE Multilin L90 Line Current Differential System 1-15

1.3 ENERVISTA UR SETUP SOFTWARE 1 GETTING STARTED

842743A3.CDR

Communications status indicators:

Green = OK Red = No communications UR icon = report is open

Quick action hot links

Expand the site list by double-clicking or selecting the +/– box.

NOTE

1.3.5 CONNECTING TO THE L90 RELAY

1. Open the Display Properties window through the Site List tree as shown. The Display Properties window opens with a status indicator on the lower left of the EnerVista UR Setup window.

2. If the status indicator is red, verify that the Ethernet network cable is properly connected to the Ethernet port on the back of the relay and that the relay has been properly setup for communications (steps A and B earlier).

If a relay icon appears in place of the status indicator, than a report (such as an oscillography or event record) is open. Close the report to re-display the green status indicator.

3. The Display Properties settings can now be edited, printed, or changed.

See chapter 4 in this manual or the EnerVista UR Setup Help File for information about the using the EnerVista UR Setup software interface.

QUICK ACTION HOT LINKS

The EnerVista UR Setup software has several quick action buttons to provide instant access to several functions that are often performed when using L90 relays. From the online window, users can select the relay to interrogate from a pull-down window, then click the button for the action they want to perform. The following quick action functions are available:

• View the L90 event record

• View the last recorded oscillography record

• View the status of all L90 inputs and outputs

• View all of the L90 metering values

• View the L90 protection summary

• Generate a service report

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1 GETTING STARTED 1.4 UR HARDWARE

1.4UR HARDWARE 1.4.1 MOUNTING AND WIRING

See Chapter 3: Hardware for mounting and wiring instructions.

1.4.2 COMMUNICATIONS

The EnerVista UR Setup software communicates to the relay via the faceplate RS232 port or the rear panel RS485 / Ethernet ports. To communicate via the faceplate RS232 port, a standard straight-through serial cable is used. The DB-9 male end is connected to the relay and the DB-9 or DB-25 female end is connected to the computer COM2 port as described in the CPU communications ports section of chapter 3.

Figure 1–7: RELAY COMMUNICATION OPTIONS

To communicate through the L90 rear RS485 port from a computer RS232 port, the GE Multilin RS232/RS485 converter box is required. This device (catalog number F485) connects to the computer using a straight-through serial cable. A shielded twisted-pair (20, 22, or 24 AWG) connects the F485 converter to the L90 rear communications port. The converter terminals (+, –, GND) are connected to the L90 communication module (+, –, COM) terminals. See the CPU communica- tions ports section in chapter 3 for details. The line is terminated with an R-C network (that is, 120 , 1 nF) as described in the chapter 3.

1.4.3 FACEPLATE DISPLAY

All messages are displayed on a backlit liquid crystal display (LCD) to make them visible under poor lighting conditions. While the keypad and display are not actively being used, the display defaults to user-defined messages. Any high-priority event-driven message automatically overrides the default message and appears on the display.

GE Multilin L90 Line Current Differential System 1-17

1.5 USING THE RELAY 1 GETTING STARTED

1.5USING THE RELAY 1.5.1 FACEPLATE KEYPAD

Display messages are organized into pages under the following headings: actual values, settings, commands, and targets. The MENU key navigates through these pages. Each heading page is divided further into logical subgroups.

The MESSAGE keys navigate through the subgroups. The VALUE keys increment or decrement numerical setting values when in programming mode. These keys also scroll through alphanumeric values in the text edit mode. Alternatively, values can be entered with the numeric keypad.

The decimal key initiates and advances to the next character in text edit mode or enters a decimal point.

The HELP key can be pressed at any time for context-sensitive help messages.

The ENTER key stores altered setting values.

1.5.2 MENU NAVIGATION

Press the MENU key to select a header display page (top-level menu). The header title appears momentarily followed by a header display page menu item. Each press of the MENU key advances through the following main heading pages:

• Actual values

• Settings

• Commands

• Targets

• User displays (when enabled)

1.5.3 MENU HIERARCHY

The setting and actual value messages are arranged hierarchically. The header display pages are indicated by double scroll bar characters (), while sub-header pages are indicated by single scroll bar characters (). The header display pages represent the highest level of the hierarchy and the sub-header display pages fall below this level. The MESSAGE UP and DOWN keys move within a group of headers, sub-headers, setting values, or actual values. Continually pressing the MESSAGE RIGHT key from a header display displays specific information for the header category. Conversely, continually pressing the MESSAGE LEFT key from a setting value or actual value display returns to the header display.

HIGHEST LEVEL LOWEST LEVEL (SETTING

VALUE)

 SETTINGS  PRODUCT SETUP

 SETTINGS  SYSTEM SETUP

The relay is in the default “Not Programmed” state when it leaves the factory. When powered up successfully, the Trouble LED is on and the In Service LED off. The relay in the “Not Programmed” state blocks signaling of any output relay. These conditions remain until the relay is explicitly put in the “Programmed” state.

Select the menu message

RELAY SETTINGS: Not Programmed

SETTINGS  PRODUCT SETUP  INSTALLATION  RELAY SETTINGS

 PASSWORD  SECURITY

ACCESS LEVEL: Restricted

1.5.4 RELAY ACTIVATION

1. To put the relay in the “Programmed” state, press either of the VALUE keys once and then press ENTER. The faceplate Trouble LED turns off and the In Service LED turns on.

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1 GETTING STARTED 1.5 USING THE RELAY

NOTE

The settings for the relay can be programmed manually (see Chapter 5) via the faceplate keypad or remotely via the EnerVista UR Setup software (see the EnerVista UR Setup help file).

1.5.5 RELAY PASSWORDS

It is recommended that passwords be set for each security level and assigned to specific personnel. There are two user security access levels, COMMAND and SETTING.

1. COMMAND

The COMMAND access level restricts the user from making any settings changes, but allows the user to perform the following operations:

• Operate breakers via faceplate keypad

• Change state of virtual inputs

• Clear event records

• Clear oscillography records

• Operate user-programmable pushbuttons

2. SETTING

The SETTING access level allows the user to make any changes to any of the setting values.

See the Changing Settings section in Chapter 4 for complete instructions on setting security-level passwords.

1.5.6 FLEXLOGIC CUSTOMIZATION

FlexLogic equation editing is required for setting user-defined logic for customizing the relay operations. See the FlexLogic section in Chapter 5.

GE Multilin L90 Line Current Differential System 1-19

1.5 USING THE RELAY 1 GETTING STARTED

1.5.7 COMMISSIONING

Commissioning tests are included in the Commissioning chapter.

The L90 requires minimal maintenance after it is commissioned into service. Since the L90 is a microprocessor-based relay, its characteristics do not change over time. As such, no further functional tests are required.

The L90 performs a number of continual self-tests and takes the necessary action in case of any major errors (see the Relay Self-tests section in chapter 7). However, it is recommended that L90 maintenance be scheduled with other system maintenance. This maintenance can involve in-service, out-of-service, or unscheduled maintenance.

In-service maintenance:

1. Visual verification of the analog values integrity, such as voltage and current (in comparison to other devices on the corresponding system).

2. Visual verification of active alarms, relay display messages, and LED indications.

3. LED test.

4. Visual inspection for any damage, corrosion, dust, or loose wires.

5. Event recorder file download with further events analysis.

Out-of-service maintenance:

1. Check wiring connections for firmness.

2. Analog values (currents, voltages, RTDs, analog inputs) injection test and metering accuracy verification. Calibrated test equipment is required.

3. Protection elements setting verification (analog values injection or visual verification of setting file entries against relay settings schedule).

4. Contact inputs and outputs verification. This test can be conducted by direct change of state forcing or as part of the system functional testing.

5. Visual inspection for any damage, corrosion, or dust.

6. Event recorder file download with further events analysis.

7. LED Test and pushbutton continuity check.

Unscheduled maintenance, such as a disturbance causing system interruption:

1. View the event recorder and oscillography or fault report for correct operation of inputs, outputs, and elements.

If it is concluded that the relay or one of its modules is of concern, contact GE Multilin for service.

1-20 L90 Line Current Differential System GE Multilin

2 PRODUCT DESCRIPTION 2.1 INTRODUCTION

2 PRODUCT DESCRIPTION 2.1INTRODUCTION 2.1.1 OVERVIEW

The L90 Line Current Differential System is a digital current differential relay system with an integral communications channel interface. It is a complete line terminal protection and control system, able to deliver protection as either a line differential and/or distance device. Both distance and line differential elements can run simultaneously.

The L90 is intended to provide complete protection for transmission lines of any voltage level. Both three phase and single phase tripping schemes are available. Models of the L90 are available for application on both two and three terminal lines. The L90 uses per phase differential at 64 kbps transmitting two phaselets per cycle. The current differential scheme is based on innovative patented techniques developed by GE. The L90 algorithms are based on the Fourier transform– phaselet approach and an adaptive statistical restraint. The restraint is similar to a traditional percentage differential scheme, but is adaptive based on relay measurements. When used with a 64 kbps channel, the innovative phaselets approach yields an operating time of 1.0 to 1.5 cycles (typical). The adaptive statistical restraint approach provides both more sensitive and more accurate fault sensing. This allows the L90 to detect relatively higher impedance single line to ground faults that existing systems may not. The basic current differential element operates on current input only. Long lines with significant capacitance can benefit from charging current compensation if terminal voltage measurements are applied to the relay. The voltage input is also used for some protection and monitoring features such as directional elements, fault locator, metering, and distance backup. In addition, the L90 provides local restricted ground fault protection.

The L90 is designed to operate over different communications links with various degrees of noise encountered in power systems and communications environments. Since correct operation of the relay is completely dependent on data received from the remote end, special attention must be paid to information validation. The L90 incorporates a high degree of security by using a 32-bit CRC (cyclic redundancy code) inter-relay communications packet.

In addition to current differential protection, the relay provides multiple backup protection for phase and ground faults. For overcurrent protection, the time overcurrent curves may be selected from a selection of standard curve shapes or a custom FlexCurve™ for optimum co-ordination. Additionally, five zones of phase and ground distance protection with power swing blocking, out-of-step tripping, line pickup, load encroachment, and six pilot schemes are included.

The L90 incorporates charging current compensation for applications on very long transmission lines without loss of sensitivity. The line capacitive current is removed from the terminal phasors.

For breaker-and-a-half or ring applications, the L90 design provides secure operation during external faults with possible CT saturation.

Voltage, current, and power metering is built into the relay as a standard feature. Current parameters are available as total waveform RMS magnitude, or as fundamental frequency only RMS magnitude and angle (phasor).

Table 2–1: DEVICE NUMBERS AND FUNCTIONS

DEVICE NUMBER

21G Ground distance 52 AC circuit breaker

21P Phase distance 59N Neutral overvoltage

25 Synchrocheck 59P Phase overvoltage

27P Phase undervoltage 59X Auxiliary overvoltage

27X Auxiliary undervoltage 67N Neutral directional overcurrent

32N Wattmetric zero-sequence directional 67P Phase directional overcurrent

50BF Breaker failure 67_2 Negative-sequence directional overcurrent

50DD Adaptive fault detector

50G Ground instantaneous overcurrent 79 Automatic recloser

50N Neutral instantaneous overcurrent 81O Overfrequency

50P Phase instantaneous overcurrent 81ROCOF Rate of change of frequency

50_2 Negative-sequence instantaneous overcurrent 81U Underfrequency

51G Ground time overcurrent 87G Restricted ground fault

51N Neutral time overcurrent 87L Segregated line current differential

51P Phase time overcurrent 87LG Ground differential

51_2 Negative-sequence time overcurrent

FUNCTION DEVICE

(sensitive current disturbance detector)

NUMBER

68 Power swing blocking

78 Out-of-step tripping

FUNCTION

GE Multilin L90 Line Current Differential System 2-1

2.1 INTRODUCTION 2 PRODUCT DESCRIPTION

Figure 2–1: SINGLE LINE DIAGRAM

Table 2–2: OTHER DEVICE FUNCTIONS

FUNCTION FUNCTION FUNCTION

Breaker Arcing Current (I

Breaker Control FlexElements™ (8) Synchrophasors

Broken Conductor Detection FlexLogic™ Equations Time synchronization over IRIG-B or

Contact Inputs (up to 96) IEC 61850 Communications (optional) Time Synchronization over SNTP

Contact Outputs (up to 64) L90 Channel Tests Transducer Inputs/Outputs

Control Pushbuttons Line Pickup User Definable Displays

CT Failure Detector Load Encroachment User Programmable LEDs

CyberSentry™ security Metering: Current, Voltage, Power,

Data Logger Modbus Communications User Programmable Self-Tests

Digital Counters (8) Modbus User Map Virtual Inputs (64)

Digital Elements (48) Non-Volatile Latches Virtual Outputs (96)

Direct Inputs (8 per L90 comms channel) Non-Volatile Selector Switch VT Fuse Failure

Disconnect Switches Open Pole Detector

DNP 3.0 or IEC 60870-5-104 protocol Oscillography

Event Recorder Pilot Schemes

Fault Locator Setting Groups (6)

t) Fault Reporting Stub Bus

IEEE 1588

Energy, Frequency, Demand, Power Factor, 87L current, local and remote phasors

User Programmable Pushbuttons

2-2 L90 Line Current Differential System GE Multilin

2 PRODUCT DESCRIPTION 2.1 INTRODUCTION

2.1.2 FEATURES

LINE CURRENT DIFFERENTIAL:

• Phase segregated, high-speed digital current differential system

• Overhead and underground AC transmission lines, series compensated lines

• Two-terminal and three-terminal line applications

• Zero-sequence removal for application on lines with tapped transformers connected in a grounded wye on the line side

• GE phaselets approach based on the Discrete Fourier Transform with 64 samples per cycle and transmitting two time-

stamped phaselets per cycle

• Adaptive restraint approach improving sensitivity and accuracy of fault sensing

• Increased security for trip decision using disturbance detector and trip output logic

• Accommodates in-zone transformer with a magnitude and phase compensation and second harmonic inhibit during

transformer magnetizing inrush

• Continuous clock synchronization via the distributed synchronization technique

• Increased transient stability through DC decaying offset removal

• Accommodates up to five times CT ratio differences

• Peer-to-peer (master-master) architecture changing to master-slave via DTT (if channel fails) at 64 kbps

• Charging current compensation

• Interfaces direct fiber, multiplexed RS422, IEEE C37.94, and G.703 connections with relay ID check

• Per-phase line differential protection direct transfer trip plus eight user-assigned pilot signals via the communications

channel

• Secure 32-bit CRC protection against communications errors

• Channel asymmetry (up to 10 ms) compensation using GPS satellite-controlled clock

BACKUP PROTECTION:

• DTT provision for pilot schemes

• Five zones of distance protection with six pilot schemes, power swing blocking and out-of-step tripping, line pickup,

and load encroachment

• Two-element time overcurrent and two-element instantaneous overcurrent directional phase overcurrent protection

• Two-element time overcurrent and two-element instantaneous overcurrent directional zero-sequence protection

• Two-element time overcurrent and two-element instantaneous overcurrent negative-sequence overcurrent protection

• Undervoltage and overvoltage protection

ADDITIONAL PROTECTION:

• Breaker failure protection

• Stub bus protection

• VT and CT supervision

• GE Multilin sources approach allowing grouping of different CTs and VTs from multiple input channels

• Open pole detection

• Breaker trip coil supervision and seal-in of trip command

• FlexLogic allowing creation of user-defined distributed protection and control logic

CONTROL:

• One and two breaker configuration for breaker-and-a-half and ring bus schemes, pushbutton control from the relay

• Auto-reclosing and synchrochecking

GE Multilin L90 Line Current Differential System 2-3

2.1 INTRODUCTION 2 PRODUCT DESCRIPTION

NOTE

• Breaker arcing current

MONITORING:

• Oscillography of current, voltage, FlexLogic operands, and digital signals (1  128 cycles to 31  8 cycles configurable)

• Events recorder: 1024 events

• Fault locator

METERING:

• Actual 87L remote phasors, differential current, channel delay, and channel asymmetry at all line terminals of line current differential protection

• Line current, voltage, real power, reactive power, apparent power, power factor, and frequency

COMMUNICATIONS:

• Front panel RS232 port: 19.2 kbps

• Rear RS485 port: up to 115 kbps

• Rear 100Base-FX Ethernet port supporting the IEC 61850 protocol

2.1.3 ORDERING

a) OVERVIEW

The L90 is available as a 19-inch rack horizontal mount or reduced-size (¾) vertical unit and consists of the following modules: power supply, CPU, CT/VT, digital input and output, transducer input and output, and inter-relay communications. Each of these modules can be supplied in a number of configurations specified at the time of ordering. The information required to completely specify the relay is provided in the following tables (see chapter 3 for full details of relay modules).

Order codes are subject to change without notice. See the GE Multilin ordering page at

http://www.gedigitalenergy.com/multilin/order.htm for the latest ordering options.

The order code structure is dependent on the mounting option (horizontal or vertical) and the type of CT/VT modules (regular CT/VT modules or the HardFiberTM modules). The order code options are described in the following sub-sections.

b) ORDER CODES WITH TRADITIONAL CTS AND VTS

The order codes for the horizontal mount units with traditional CTs and VTs are shown below.

Table 2–3: L90 ORDER CODES (HORIZONTAL UNITS)

BASE UNIT L90||||||||||| |Base Unit CPU T | | | | | | | | | | | RS485 and Three Multi-mode fiber 100Base-FX (SFP w ith LC)

L90 - * ** - * * * - F ** - H ** - L ** - N ** - S ** - U ** - W/X ** Full Size Horizontal Mount

U | | | | | | | | | | | RS485 and Two Multi-mode fiber 100Base-FX (SFP with LC), One 10/100Base-T (SFP with RJ45) V | | | | | | | | | | | RS485 and Three 10/100Base-T (SFP with RJ45)

02 | | | | | | | | | | Breaker-and-a-half 03 | | | | | | | | | | IEC 61850 05 | | | | | | | | | | Breaker-and-a-half and IEC 61850 06 | | | | | | | | | | Phasor measurement unit (PMU) 07 | | | | | | | | | | IEC 61850 and PMU 08 | | | | | | | | | | Breaker-and-a-half and PMU 09 | | | | | | | | | | Breaker-and-a-half, IEC 61850, and PMU 24 | | | | | | | | | | In-zone transformer protection 25 | | | | | | | | | | In-zone transformer protection and IEC 61850 26 | | | | | | | | | | In-zone transformer protection and PMU 27 | | | | | | | | | | In-zone transformer protection, IEC 61850, and PMU 80 | | | | | | | | | | In-zone transformer and Breaker-and-a-half 81 | | | | | | | | | | In-zone transformer, IEC 61850, and Breaker-and-a-half 82 | | | | | | | | | | In-zone transformer, Breaker-and-a-half, and PMU 83 | | | | | | | | | | In-zone transformer, IEC 61850, Breaker-and-a-half, and PMU A0 | | | | | | | | | | CyberSentry Lvl 1 A2 | | | | | | | | | | CyberSentry Lvl 1 and Breaker-and-a-half A3 | | | | | | | | | | CyberSentry Lvl 1 and IEC 61850 A5 | | | | | | | | | | CyberSentry Lvl 1, IEC 61850, and Breaker-and-a-half A6 | | | | | | | | | | CyberSentry Lvl 1 and PMU A7 | | | | | | | | | | CyberSentry Lvl 1, IEC 61850, and PMU A8 | | | | | | | | | | CyberSentry Lvl 1, PMU, and Breaker-and-a-ha lf A9 | | | | | | | | | | CyberSentry Lvl 1, IEC 61850, PMU, and Breaker- and-a-half AO | | | | | | | | | | CyberSentry Lvl 1 and In-zone transformer protection AP | | | | | | | | | | CyberSentry Lvl 1, IEC 61850, and In-zone transformer protection AQ | | | | | | | | | | CyberSentry Lvl 1, PMU, and In-zone transformer prot ection AR | | | | | | | | | | CyberSentry Lvl 1, IEC 61850, PMU, and In-zone transformer protection B0 | | | | | | | | | | IEEE 1588 B2 | | | | | | | | | | IEEE 1588 and Breaker-and-a-half B3 | | | | | | | | | | IEEE 1588 and I EC 61850 B5 | | | | | | | | | | IEEE 1588, IEC 61850, and Breaker-and-a-half B6 | | | | | | | | | | IEEE 1588 and P MU B7 | | | | | | | | | | IEEE 1588, IEC 61850, and PMU B8 | | | | | | | | | | IEEE 1588, PMU, an d Breaker-and-a-half B9 | | | | | | | | | | IEEE 1588, IEC 61850, PMU, and Breaker-and-a-half BO | | | | | | | | | | IEEE 1588 and In-zone transformer protection BP | | | | | | | | | | IEEE 1588, IEC 61850, and In-zone transformer protection BQ | | | | | | | | | | IEEE 1588, PMU, and In-zone transformer protection BR | | | | | | | | | | IEEE 1588, IEC 61850, PMU, and In-zone transformer protection C0 | | | | | | | | | | Parallel Redundancy Protocol (PRP)

2-4 L90 Line Current Differential System GE Multilin

2 PRODUCT DESCRIPTION 2.1 INTRODUCTION

Table 2–3: L90 ORDER CODES (HORIZONTAL UNITS)

BASE UNIT L90||||||||||| |Base Unit

L90 - * ** - * * * - F ** - H ** - L ** - N ** - S ** - U ** - W/X ** Full Size Horizontal Mount

C2 | | | | | | | | | | PRP and Breaker-and-a-half C3 | | | | | | | | | | PRP and IEC 61850 C5 | | | | | | | | | | PRP, IEC 61850, and Breaker-and-a-half C6 | | | | | | | | | | PRP and PMU C7 | | | | | | | | | | PRP, IEC 61850, and PMU C8 | | | | | | | | | | PRP, Breaker-and-a-half, and PMU C9 | | | | | | | | | | PRP, IEC 61850, Breaker-and-a-half, and PMU CO | | | | | | | | | | PRP and In-zone transformer protection CP | | | | | | | | | | PRP, In-zone transformer protection, and IEC 61850 CQ | | | | | | | | | | PRP, In-zone transformer protection, and PMU CR | | | | | | | | | | PRP, In-zone transformer protection, IEC 61850, and PMU D0 | | | | | | | | | | IEEE 1588 and CyberSentry Lvl 1 D2 | | | | | | | | | | IEEE 1588, CyberSentry Lvl 1, and Breaker-and-a- half D3 | | | | | | | | | | IEEE 1588, CyberSentry Lvl 1, and IEC 61850 D5 | | | | | | | | | | IEEE 1588, CyberSentry Lvl 1, IEC 61850, and Breaker-and- a-half D6 | | | | | | | | | | IEEE 1588, CyberSentry Lvl 1, and PMU D7 | | | | | | | | | | IEEE 1588, CyberSentry Lvl 1, IEC 61850, and PMU D8 | | | | | | | | | | IEEE 1588, CyberSentry Lvl 1, Breaker-and-a-half, and PMU D9 | | | | | | | | | | IEEE 1588, CyberSentry Lvl 1, IEC 61850, Breaker-a nd-a-half, and PMU DO | | | | | | | | | | IEEE 1588, CyberSe ntry Lvl 1, and In-zone transformer protection DP | | | | | | | | | | IEEE 1588, CyberSe ntry Lvl 1, IEC 61850, and In-zone transformer protection DQ | | | | | | | | | | IEEE 1588, Cy berSentry Lvl 1, PMU, and In-zone transformer protection DR | | | | | | | | | | IEEE 1588, CyberSentry Lvl 1, IEC 61850, PMU, and In-zone transformer protection E0 | | | | | | | | | | IEEE 1588 and P RP E2 | | | | | | | | | | IEEE 1588, P RP, and Breaker-and-a-half E3 | | | | | | | | | | IEEE 1588, P RP, and IEC 61850 E5 | | | | | | | | | | IEEE 1588, PRP, IEC 61850, and Breaker-and-a-half E6 | | | | | | | | | | IEEE 1588, P RP, and PMU E7 | | | | | | | | | | IEEE 1588, PRP, IEC 61850, and PMU E8 | | | | | | | | | | IEEE 1588, PRP, Breaker-and-a-half, and PMU E9 | | | | | | | | | | IEEE 1588, P RP, IEC 61850, Breaker-and-a-half, and PMU EO | | | | | | | | | | IEEE 1588, PRP, and In-zone transformer protection EP | | | | | | | | | | IEEE 1588, PRP, In-zone transformer protection, and IEC 618 50 EQ | | | | | | | | | | IEEE 1588, PRP, In-zone transformer protection, and PMU ER | | | | | | | | | | IEEE 1588, PRP, In-zone transformer protection, IEC 61850, and PMU F0 | | | | | | | | | | PRP and CyberSentry Lvl 1 F2 | | | | | | | | | | PRP, CyberSentry Lvl 1, and Breaker-and-a-half F3 | | | | | | | | | | PRP, CyberSentry Lvl 1, and IEC 61850 F5 | | | | | | | | | | PRP, CyberSentry Lvl 1, IEC 61850, and Breaker-and-a-half F6 | | | | | | | | | | PRP, CyberSentry Lvl 1, and PMU F7 | | | | | | | | | | PRP, CyberSentry Lvl 1, IEC 61850, and PMU F8 | | | | | | | | | | PRP, CyberSentry Lvl 1, Breaker-and-a-half, and PMU F9 | | | | | | | | | | PRP, CyberSentry Lvl 1, IEC 61850, Breaker-and-a-half, and PMU FO | | | | | | | | | | PRP, CyberSentry Lvl 1,In-zone transformer protection FP | | | | | | | | | | PRP, CyberSentry Lvl 1,In-zone transformer protection, and IEC 61850 FQ | | | | | | | | | | PRP, CyberSentry Lvl 1, In-zone transformer protection, and PMU FR | | | | | | | | | | PRP, CyberSentry Lvl 1, In-zone transformer protection, IEC 61850, a nd PMU G0 | | | | | | | | | | IEEE 1588, PRP, and CyberSentry Lvl 1 G2 | | | | | | | | | | IEEE 1588, PRP, CyberSentry Lvl 1, and Breaker-and-a-half G3 | | | | | | | | | | IEEE 1588, PRP, CyberSentry Lvl 1, and IEC 61850 G5 | | | | | | | | | | IEEE 1588, PRP, CyberSentry LVl 1, IEC 61850, and Breaker-and-a-half G6 | | | | | | | | | | IEEE 1588, PRP, CyberSentry Lvl 1, and PMU G7 | | | | | | | | | | IEEE 1588, PRP, CyberSentry Lvl 1, IEC 61850, and PMU G8 | | | | | | | | | | IEEE 1588, PRP, CyberSentry Lvl 1, Breaker-and-a-half, a nd PMU G9 | | | | | | | | | | IEEE 1588, PRP, CyberSentry Lvl 1, IEC 16850, Breaker-and-a- half, and PMU GO | | | | | | | | | | IEEE 1588, PRP, CyberSentry Lvl 1, In-zone transformer protection GP | | | | | | | | | | IEEE 1588 PRP, CyberSentry Lvl 1, In-zone transformer protection, and IEC 61850 GQ | | | | | | | | | | IEEE 1588, PRP, CyberSentry Lvl 1, In-zone transformer protection, and PMU GR | | | | | | | | | | IEEE 1588, PRP, CyberSentry Lvl 1, In-zone transformer protection, IEC 61850, and PMU H0 | | | | | | | | | | CyberSentry Lvl 1, In-zone transformer protection, and Breaker-and-a-half H1 | | | | | | | | | | CyberSentry Lvl 1, In-zone transformer protection, IEC 61850, and Breaker-and-a-half H2 | | | | | | | | | | CyberSentry Lvl 1, In-zone transformer protection, Breaker-and-a- half, and PMU H3 | | | | | | | | | | CyberSentry Lvl 1, In-zone transformer protection, IEC 61850, Breaker -and-a-half, and PMU H4 | | | | | | | | | | IEEE 1588, In-zone transformer protection, and Breaker-an d-a-half H5 | | | | | | | | | | IEEE 1588, In-zone transformer protection, IEC 6850, and Br eaker-and-a-half H6 | | | | | | | | | | IEEE 1588, In-zone transformer protection, Breaker-and-a-half , and PMU H7 | | | | | | | | | | IEEE 1588, In-zone transformer protection, IEC 61850, Brea ker-and-a-half, and PMU H8 | | | | | | | | | | PRP, In-zone transformer protection, and Breaker-and-a-half H9 | | | | | | | | | | PRP, In-zone transformer protection, IEC 61850, and Breaker-and-a-half HA | | | | | | | | | | PRP, In-zone transformer protection, Breaker-and-a-half, and PMU HB | | | | | | | | | | PRP, In-zone transformer protection, IEC 61850, Breaker-and-a-half, and PMU HC | | | | | | | | | | IEEE 1588, CyberSentry Lvl 1, In-zone transf ormer protection, and Breaker-and-a-half HD | | | | | | | | | | IEEE 1588, CyberSentry Lvl 1, In-zone transf ormer protection, IEC 61850, and Breaker-and-a-half HE | | | | | | | | | | IEEE 1588, C yberSentry Lvl 1, In-zone transformer protection, Breaker-and-a-half, and PMU HF | | | | | | | | | | IEEE 1588, CyberSentry Lvl 1, In-zone transformer protection, IEC 61580, Breaker-and-a-half, PMU HG | | | | | | | | | | IEEE 1588, PRP, In-zone transformer protection, and Breaker-and-a-half HH | | | | | | | | | | IEEE 1588, PRP, In-zone transformer protection, IEC 61850, and Breaker-and-a-half HI | | | | | | | | | | IEEE 1588, PRP, In-zone transformer protection, Breaker -and-a-half, and PMU HJ | | | | | | | | | | IEEE 1588, PRP, In-zone transformer protection, IE 61850, Breaker-and-a-half, and PMU HK | | | | | | | | | | PRP, CyberSentry Lvl 1, In-zone transformer protection, and Breaker-and-a-ha lf HL | | | | | | | | | | PRP, CyberSentry Lvl 1, In-zone transformer protection, IEC 61850, and Breaker-and-a-half HM | | | | | | | | | | PRP, CyberSentry Lvl 1, In-zone transformer protection, Breaker-and-a-half, and PMU HN | | | | | | | | | | PRP, CyberSentry Lvl 1, In-zone transformer protection, IEC 61850, Breaker-and-a-half, and PMU HO | | | | | | | | | | IEEE 1588, PRP, CyberSentry Lvl 1, In-zone transformer protection, Breaker-and-a-half HP | | | | | | | | | | IEEE 1588, PRP, CyberSentry Lvl 1, In-zone transformer protection, IEC 61850, Breaker-and-a-half HQ | | | | | | | | | | IEEE 1588, PRP, CyberSentry Lvl 1, In-zone transformer protection, breaker-and-a-hal, and PMU HR | | | | | | | | | | IEEE 1588, PRP, CyberSentry Lvl 1, In-zone Tx protection, IEC 61850, breaker-and-a half, and PMU

GE Multilin L90 Line Current Differential System 2-5

2.1 INTRODUCTION 2 PRODUCT DESCRIPTION

Table 2–3: L90 ORDER CODES (HORIZONTAL UNITS)

BASE UNIT L90||||||||||| |Base Unit MOUNT/COATING H | | | | | | | | | Horizontal (19” rack)

POWER SUPPLY (redundant supply must be same type as main supply)

DIGITAL INPUTS/OUTPUTS XX XX XX XX XX | No Module

TRANSDUCER INPUTS/OUTPUTS (select a maximum of 3 per unit)

INTER-RELAY COMMUNICATIONS (select a maximum of 1 per unit)

L90 - * ** - * * * - F ** - H ** - L ** - N ** - S ** - U ** - W/X ** Full Size Horizontal Mount

A | | | | | | | | | Horizontal (19” rack) with harsh environmental coating

D | | | | | | | | French display R||||||| |Russian display A | | | | | | | | Chinese display P | | | | | | | | English display with 4 small and 12 large programmable pushbuttons G | | | | | | | | French display with 4 small and 12 large programmable pushbuttons S | | | | | | | | Russian display with 4 small and 12 large programmable pushbuttons B | | | | | | | | Chinese display with 4 small and 12 large programmable pushbuttons K | | | | | | | | Enhanced front panel with English display M | | | | | | | | Enhanced front panel with French display Q | | | | | | | | Enhanced front panel with Russian display U | | | | | | | | Enhanced front panel with Chinese display

L | | | | | | | | Enhanced front panel with English display and user-programmable pushbuttons N | | | | | | | | Enhanced front panel with French display and user-programmable pushbuttons T | | | | | | | | Enhanced front panel with Russian display and user-programmable pushbuttons V | | | | | | | | Enhanced front panel with Chinese display and user-programmable pushbuttons W | | | | | | | | Enhanced front panel with Turkish display Y | | | | | | | | Enhanced front panel with Turkish display and user-programmable pushbuttons

8H | 8H | | | | Standard 8CT 8L | 8L | | | | Standard 4CT/4VT with enhanced diagnostics (required for PMU option) 8N | 8N | | | | Standard 8CT with enhanced diagnostics (required for PMU option)

4A 4A 4A 4A 4A | 4 Solid-State (no monitoring) MOSFET outputs 4B 4B 4B 4B 4B | 4 Solid-State (voltage with optional current) MOSFET outputs 4C 4C 4C 4C 4C | 4 Solid-State (current with optional voltage) MOSFET outputs 4D 4D 4D 4D 4D | 16 digital inputs with Auto-Burnishing 4L 4L 4L 4L 4L | 14 Form-A (no monitoring) Latching outputs 67 67 67 67 67 | 8 Form-A (no monitoring) outputs 6A 6A 6A 6A 6A | 2 Form-A (voltage with optional current) and 2 Form-C outputs, 8 digital inputs 6B 6B 6B 6B 6B | 2 Form-A (voltage with optional current) and 4 Form-C outputs, 4 digital inputs 6C 6C 6C 6C 6C | 8 Form-C outputs 6D 6D 6D 6D 6D | 16 digital inputs 6E 6E 6E 6E 6E | 4 Form-C outputs, 8 digital inputs 6F 6F 6F 6F 6F | 8 Fast Form-C outputs 6G 6G 6G 6G 6G | 4 Form-A (voltage with optional current) outputs, 8 digital inputs 6H 6H 6H 6H 6H | 6 Form-A (voltage with optional current) outputs, 4 digital inputs 6K 6K 6K 6K 6K | 4 Form-C and 4 Fast Form-C outputs 6L 6L 6L 6L 6L | 2 Form-A (current with optional voltage) and 2 Form-C outputs, 8 digital inputs 6M 6M 6M 6M 6M | 2 Form-A (current with optional voltage) and 4 Form- C outputs, 4 digital inputs 6N 6N 6N 6N 6N | 4 Form-A (current with optional voltage) outputs, 8 digital inputs 6P 6P 6P 6P 6P | 6 Form-A (current with optional voltage) outputs, 4 digital inputs 6R 6R 6R 6R 6R | 2 Form-A (no monitoring) and 2 Form-C outputs, 8 digital inputs 6S 6S 6S 6S 6S | 2 Form-A (no monitoring) and 4 Form-C outputs, 4 digital inputs 6T 6T 6T 6T 6T | 4 Form-A (no monitoring) outputs, 8 digital inputs 6U 6U 6U 6U 6U | 6 Form-A (no monitoring) outputs, 4 digital inputs 6V 6V 6V 6V 6V | 2 Form-A outputs, 1 Form-C output, 2 Form-A (no monitoring) latching outputs, 8 digital inputs 5A 5A 5A 5A 5A | 4 dcmA inputs, 4 dcmA outputs (only one 5A module is allowed) 5C 5C 5C 5C 5C | 8 RTD inputs 5D 5D 5D 5D 5D | 4 RTD inputs, 4 dcmA outputs (only one 5D module is allowed) 5E 5E 5E 5E 5E | 4 RTD inputs, 4 dcmA inputs 5F 5F 5F 5F 5F | 8 dcmA inputs

2A C37.94SM, 1300nm single-mode, ELED, 1 channel single-mode 2B C37.94SM, 1300nm single-mode, ELED, 2 channel single-mode 2E Bi-phase, single channel 2F Bi-phase, dual channel 72 1550 nm, single-mode, LASER, 1 Channel 73 1550 nm, single-mode, LASER, 2 Channel 74 Channel 1 - RS422; Channel 2 - 1550 nm, single-mode, LASER 75 Channel 1 - G.703; Channel 2 - 1550 nm, Single-mode LASER 76 IEEE C37.94, 820 nm, 64 kbps, multimode, LED , 1 Channel 77 IEEE C37.94, 820 nm, 64 kbps, multimode, LED , 2 Channels 7A 820 nm, multi-mode, LED, 1 Channel 7B 1300 nm, multi-mode, LED, 1 Channel 7C 1300 nm, single-mode, ELED, 1 Channel 7D 1300 nm, single-mode, LASER, 1 Channel 7E Channel 1 - G.703; Channel 2 - 820 nm, multi-mode 7F Channel 1 - G.703; Channel 2 - 1300 nm, multi-mode 7G Channel 1 - G.703; Channel 2 - 1300 nm, single-mode ELED 7H 820 nm, multi-mode, LED, 2 Channels

7I 1300 nm, multi-mode, LED, 2 Channels 7J 1300 nm, single-mode, ELED, 2 Channels 7K 1300 nm, single-mode, LASER, 2 Channels 7L Channel 1 - RS422; Channel 2 - 820 nm, multi-mode, LED 7M Channel 1 - RS422; Channel 2 - 1300 nm, multi-mode, LED 7N Channel 1 - RS422; Channel 2 - 1300 nm, single-mode, ELED 7P Channel 1 - RS422; Channel 2 - 1300 nm, single-mode, LASER 7Q Channel 1 - G.703; Channel 2 - 1300 nm, single-mode LASER 7R G.703, 1 Channel 7S G.703, 2 Channels 7T RS422, 1 Channel 7V RS422, 2 Channels, 2 Clock Inputs 7W RS422, 2 Channels

The order codes for the reduced size vertical mount units with traditional CTs and VTs are shown below.

Table 2–4: L90 ORDER CODES (REDUCED SIZE VERTICAL UNITS)

L90 - * ** - * * * - F ** - H ** - L ** - N ** - R ** Reduced Size Vertical Mount

U | | | | | | | | | RS485 and Two Multi-mode fiber 100Base-FX (SFP with LC), One 10/100Base-T (SFP with RJ45) V | | | | | | | | | RS485 and Three 10/100Base-T (SFP with RJ45)

2-6 L90 Line Current Differential System GE Multilin

2 PRODUCT DESCRIPTION 2.1 INTRODUCTION

Table 2–4: L90 ORDER CODES (REDUCED SIZE VERTICAL UNITS)

AO | | | | | | | | CyberSentry Lvl 1 and In-zone transformer protection AP | | | | | | | | CyberSentry Lvl 1, IEC 61850, and In-zone transformer protection AQ | | | | | | | | CyberSentry Lvl 1, PMU, and In-zone transformer protection AR | | | | | | | | CyberSentry Lvl 1, IEC 61850, PMU, and In-zone transformer protection B0 | | | | | | | | IEEE 1588 B2 | | | | | | | | IEEE 1588 and Breaker-and-a-half B3 | | | | | | | | IEEE 1588 and IEC 61850 B5 | | | | | | | | IEEE 1588, IEC 61850, and Breaker-and-a -half B6 | | | | | | | | IEEE 1588 and PMU B7 | | | | | | | | IEEE 1588, IEC 61850, and PMU B8 | | | | | | | | IEEE 1588, PMU, and Breaker- and-a-half B9 | | | | | | | | IEEE 1588, IEC 61850, PMU, and Breaker -and-a-half BO | | | | | | | | IEEE 1588 and In-zone transformer protection BP | | | | | | | | IEEE 1588, IEC 61850, and In-zone transformer protection BQ | | | | | | | | IEEE 1588, PMU, and In-zone transformer protection BR | | | | | | | | IEEE 1588, IEC 61850, PMU, and In-zone transformer protection C0 | | | | | | | | Parallel Redundancy Protocol (PRP) C2 | | | | | | | | PRP and Breaker-and-a-half C3 | | | | | | | | PRP and IEC 61850 C5 | | | | | | | | PRP, IEC 61850, and Breaker-and-a-half C6 | | | | | | | | PRP and PMU C7 | | | | | | | | PRP, IEC 61850, and PMU C8 | | | | | | | | PRP, Breaker-and-a-half, and PMU C9 | | | | | | | | PRP, IEC 61850, Breaker-and-a-half, and PMU CO | | | | | | | | PRP and In-zone transformer prot ection CP | | | | | | | | PRP, In-zone transformer protection, and IEC 61850 CQ | | | | | | | | PRP, In-zone transformer protection, and PMU CR | | | | | | | | PRP, In-zone transformer protection, IEC 61 850, and PMU D0 | | | | | | | | IEEE 1588 and CyberSentry Lvl 1 D2 | | | | | | | | IEEE 1588, CyberSentry Lvl 1, and Breaker-and-a- half D3 | | | | | | | | IEEE 1588, CyberSentry Lvl 1, and IEC 61850 D5 | | | | | | | | IEEE 1588, CyberSentry Lvl 1, IIEC 61850, and Breaker-and-a-half D6 | | | | | | | | IEEE 1588, CyberSentry Lvl 1, and PMU D7 | | | | | | | | IEEE 1588, CyberSentry Lvl 1, IEC 61850, and P MU D8 | | | | | | | | IEEE 1588, CyberSentry Lvl 1, Breaker-and-a-hal f, and PMU D9 | | | | | | | | IEEE 1588, CyberSentry Lvl 1, IEC 61850, PMU , and Breaker-and-a-half DO | | | | | | | | IEEE 1588, CyberSentry Lvl 1, and In-zone transformer protection DP | | | | | | | | IEEE 1588, CyberSentry Lvl 1, IEC 61850, and In-zone transformer protection DQ | | | | | | | | IEEE 1588, CyberSentry Lvl 1, PMU, and In-zone transformer protection DR | | | | | | | | IEEE 1588, CyberSentry Lvl 1, IEC 61850, PMU, and In-zone transformer protection E0 | | | | | | | | IEEE 1588 and PRP E2 | | | | | | | | IEEE 1588, PRP, and Breaker-and-a-half E3 | | | | | | | | IEEE 1588, PRP, and IEC 61850 E5 | | | | | | | | IEEE 1588, PRP, IEC 61850, and Breaker-and-a-half E6 | | | | | | | | IEEE 1588, PRP, and PMU E7 | | | | | | | | IEEE 1588, PRP, IEC 61850, and PMU E8 | | | | | | | | IEEE 1588, PRP, Breaker-and-a-half, and PMU E9 | | | | | | | | IEEE 1588, PRP, IEC 61850, Breaker-and-a-half, and PMU EO | | | | | | | | IEEE 1588, PRP, and In-zone transformer protection EP | | | | | | | | IEEE 1588, PRP, In-zone transformer protection, and IEC 61850 EQ | | | | | | | | IEEE 1588, PRP, In-zone transformer protection, and PMU ER | | | | | | | | IEEE 1588, PRP, In-zone transformer protection, IEC 61850, and PMU F0 | | | | | | | | PRP and CyberSentry Lvl 1 F2 | | | | | | | | PRP, CyberSentry Lvl 1, and Breaker-and-a-half F3 | | | | | | | | PRP, CyberSentry Lvl 1, and IEC 61850 F5 | | | | | | | | PRP, CyberSentry Lvl 1, IEC 61850, and Breaker-and-a-half F6 | | | | | | | | PRP, CyberSentry Lvl 1, and PMU F7 | | | | | | | | PRP, CyberSentry Lvl 1, IEC 61850, and PMU F8 | | | | | | | | PRP, CyberSentry Lvl 1, Breaker-and-a-half, and PMU F9 | | | | | | | | PRP, CyberSentry Lvl 1, IEC 61850, Breaker-and-a-half, and PMU FO | | | | | | | | PRP, CyberSentry Lvl 1, In-zone transformer protection FP | | | | | | | | PRP, CyberSentry Lvl 1, In-zone transformer protection, and IEC 61850 FQ | | | | | | | | PRP, CyberSentry Lvl 1, In-zone transformer protection, and PMU FR | | | | | | | | PRP, CyberSentry Lvl 1, In-zone transformer protection, IEC 61850, and PMU G0 | | | | | | | | IEEE 1588, PRP, and CyberSentry Lvl 1 G2 | | | | | | | | IEEE 1588, PRP, CyberSentry Lvl 1, and Breaker-and-a-half G3 | | | | | | | | IEEE 1588, PRP, CyberSentry Lvl 1, and IEC 61850 G5 | | | | | | | | IEEE 1588, PRP, CyberSentry LVl 1, IEC 61850, and Breaker-and-a-half G6 | | | | | | | | IEEE 1588, PRP, CyberSentry Lvl 1, and PMU G7 | | | | | | | | IEEE 1588, PRP, CyberSentry Lvl 1, IEC 61850, and PMU G8 | | | | | | | | IEEE 1588, PRP, CyberSentry Lvl 1, Breaker-and-a-half, and PMU G9 | | | | | | | | IEEE 1588, PRP, CyberSentry Lvl 1, IEC 16850, Breaker-and-a-half, and PMU GO | | | | | | | | IEEE 1588, PRP, CyberSentry Lvl 1, In-zone transformer protection GP | | | | | | | | IEEE 1588 PRP, CyberSentry Lvl 1, In-zone transformer protection, and IE C 61850 GQ | | | | | | | | IEEE 1588, PRP, CyberSentry Lvl 1, In-zone transformer protection, and PMU GR | | | | | | | | IEEE 1588, PRP, CyberSentry Lvl 1, In-zone transformer protection, IEC 61850, and PMU H0 | | | | | | | | CyberSentry Lvl 1, In-zone transformer protection, and Breaker-and-a-half H1 | | | | | | | | CyberSentry Lvl 1, In-zone transformer protection, IE C 61850, and Breaker-and-a-half H2 | | | | | | | | CyberSentry Lvl 1, In-zone transformer protection, Br eaker-and-a-half, and PMU H3 | | | | | | | | CyberSentry Lvl 1, In-zone transformer protection, IE C 61850, Breaker-and-a-half, and PMU H4 | | | | | | | | IEEE 1588, In-zone transformer protection, and Br eaker-and-a-half H5 | | | | | | | | IEEE 1588, In-zone transformer protection, IEC 6850, and Breaker-and-a-half H6 | | | | | | | | IEEE 1588, In-zone transformer protection, Breaker-and- a-half, and PMU H7 | | | | | | | | IEEE 1588, In-zone transformer protection, IEC 61850, Breaker-an d-a-half, and PMU H8 | | | | | | | | PRP, In-zone transformer protection, and Breaker-and-a-half H9 | | | | | | | | PRP, In-zone transformer protection, IEC 61850, and Breaker-and-a-half HA | | | | | | | | PRP, In-zone transformer protection, Breaker-and-a-half, and PMU HB | | | | | | | | PRP, In-zone transformer protection, IEC 61850, Breaker-and-a-half, and PMU HC | | | | | | | | IEEE 1588, CyberSentry Lvl 1, In-zone transformer protection, and Breaker-and-a-half HD | | | | | | | | IEEE 1588, CyberSentry Lvl 1, In-zone transformer protection, IEC 61850, and Breaker-and-a-half HE | | | | | | | | IEEE 1588, CyberSentry Lvl 1, In-zone transformer protection, Breaker-and-a-half, and PMU HF | | | | | | | | IEEE 1588, CyberSentry Lvl 1, In-zone transformer protection, IEC 61580, Breaker-and-a-half, PMU HG | | | | | | | | IEEE 1588, PRP, In-zone transformer protection, and Breaker-and-a-half HH | | | | | | | | IEEE 1588, PRP, In-zone transformer protection, IEC 61850, and Breaker-and-a-half

HI | | | | | | | | IEEE 1588, PRP, In-zone transformer protection, Breaker-and-a-half, and PMU HJ | | | | | | | | IEEE 1588, PRP, In-zone transformer protection, IE 61850, Breaker-and-a-half, and PMU HK | | | | | | | | PRP, CyberSentry Lvl 1, In-zone transformer protection, and Breaker-and-a-half HL | | | | | | | | PRP, CyberSentry Lvl 1, In-zone transformer protection, IEC 61850, and Breaker-and-a-half HM | | | | | | | | PRP, CyberSentry Lvl 1, In-zone transformer protection, Breaker-and-a-half, and PMU HN | | | | | | | | PRP, CyberSentry Lvl 1, In-zone transformer pr otection, IEC 61850, Breaker-and-a-half, and PMU HO | | | | | | | | IEEE 1588, PRP, CyberSentry Lvl 1, In-zone transformer protection, Breaker-and-a-half HP | | | | | | | | IEEE 1588, PRP, CyberSentry Lvl 1, In-zone transformer protection, IEC 61850, Breaker-and-a-half HQ | | | | | | | | IEEE 1588, PRP, CyberSentry Lvl 1, In-zone transformer protection, breaker-and-a-hal, and PMU

HR | | | | | | | | IEEE 1588, PRP, CyberSentry Lvl 1, In-zone Tx protection, IEC 61850, breaker-and-a half, and PMU

B | | | | | | | Vertical (3/4 rack) with harsh environmental coating

D | | | | | | French display R | | | | | | Russian display A | | | | | | Chinese display K | | | | | | Enhanced front panel with English display M | | | | | | Enhanced front panel with French display Q | | | | | | Enhanced front panel with Russian display U | | | | | | Enhanced front panel with Chinese display L | | | | | | Enhanced front panel with English display and user-programmable pushbuttons N | | | | | | Enhanced front panel with French display and user-programmable pushbuttons T | | | | | | Enhanced front panel with Russian display and user-programmable pushbuttons V | | | | | | Enhanced front panel with Chinese display and user-programmable pushbut tons W | | | | | | Enhanced front panel wit h Turkish display Y | | | | | | Enhanced front panel with Turkish display and user-programmable pushbuttons

GE Multilin L90 Line Current Differential System 2-7

2.1 INTRODUCTION 2 PRODUCT DESCRIPTION

Table 2–4: L90 ORDER CODES (REDUCED SIZE VERTICAL UNITS)

CT/VT MODULES 8F | 8F | | Standard 4CT/4VT

DIGITAL INPUTS/OUTPUTS XX XX XX | No Module

TRANSDUCER INPUTS/OUTPUTS (select a maximum of 3 per unit)

INTER-RELAY COMMUNICATIONS (select a maximum of 1 per unit)

L | | | | | 24 to 48 V (DC only) power supply

8H | 8H | | Standard 8CT 8L | 8L | | Standard 4CT/4VT with enhanced diagnostics (required f or PMU option) 8N | 8N | | Standard 8CT with enhanced diagnostics (required for PMU option)

4A 4A 4A | 4 Solid-State (no monitoring) MOSFET outputs 4B 4B 4B | 4 Solid-State (voltage with optional current) MOSFET out puts 4C 4C 4C | 4 So lid-State (current with optional voltage) MOSFET outputs 4D 4D 4D | 16 digital inputs with A uto-Burnishing 4L 4L 4L | 14 Form-A (no monitoring) Latching outputs 67 67 67 | 8 Form-A (no monitoring) outputs 6A 6A 6A | 2 Form-A (voltage with opti onal current) and 2 Form-C outputs, 8 digital inputs 6B 6B 6B | 2 Form-A (voltage with opti onal current) and 4 Form-C outputs, 4 digital inputs 6C 6C 6C | 8 For m-C outputs 6D 6D 6D | 16 digital inputs 6E 6E 6E | 4 Form-C outputs, 8 digital inputs 6F 6F 6F | 8 Fast Form-C outputs

6G 6G 6G | 4 Form-A (voltage with optional current) outputs, 8 digital inputs

6H 6H 6H | 6 For m-A (voltage with optional current) outputs, 4 digital inputs 6K 6K 6K | 4 Form-C and 4 Fast Form-C outputs 6L 6L 6L | 2 Form-A (current with optional voltage) and 2 Form-C outputs, 8 digital inputs

6M 6M 6M | 2 Form-A (current with optional voltage) and 4 For m-C outputs, 4 digital inputs

6N 6N 6N | 4 For m-A (current with optional voltage) outputs, 8 digital inputs 6P 6P 6P | 6 Form-A (curr ent with optional voltage) outputs, 4 digital inputs 6R 6R 6R | 2 For m-A (no monitoring) and 2 Form-C outputs, 8 digital inputs 6S 6S 6S | 2 Form-A (no monit oring) and 4 Form-C outputs, 4 digital inputs 6T 6T 6T | 4 Form-A (no monitoring) outputs, 8 digital inputs 6U 6U 6U | 6 For m-A (no monitoring) outputs, 4 digital inputs 6V 6V 6V | 2 Form-A outputs, 1 Form -C output, 2 Form-A (no monitoring) latching outputs, 8 digital inputs 5A 5A 5A | 4 dcmA i nputs, 4 dcmA outputs (only one 5A module is allowed) 5C 5C 5C | 8 RTD inputs 5D 5D 5D | 4 RTD inputs, 4 dcmA outputs (only one 5D module is allowed) 5E 5E 5E | 4 RTD inputs, 4 dcmA inputs 5F 5F 5F | 8 dcmA inputs

7I 1300 nm, multi-mode, LED, 2 Channels 7J 1300 nm, single-mode, ELE D, 2 Channels 7K 1300 nm, single-mode, LASER, 2 Channels 7L Channel 1 - RS422; Channel 2 - 820 n m, multi-mode, LED 7M Channel 1 - RS422; Channel 2 - 1300 nm, multi-mode, LED 7N Channel 1 - RS422; Channel 2 - 1300 nm, single-mode, ELED 7P Channel 1 - RS422; Channel 2 - 1300 nm, single-mode, LASER 7Q Channel 1 - G.703; Channel 2 - 1300 nm, single-mode LASER 7R G.703, 1 Channel 7S G.703, 2 Channels 7T RS422, 1 Channel 7V RS422, 2 Channels, 2 Clock Inputs 7W RS422, 2 Channels

c) ORDER CODES WITH PROCESS BUS MODULES

The order codes for the horizontal mount units with the process bus module are shown below.

Table 2–5: L90 ORDER CODES (HORIZONTAL UNITS WITH PROCESS BUS)

BASE UNIT L90 | | ||| | | | | | |Base Unit CPU T | | | | | | | | | | RS485 and Three Multi-mode fiber 100Base-FX (SFP with LC)

L90 - * ** - * * * - F ** - H ** - L ** - N ** - S ** - W/X ** Full Size Horizontal Mount

U | | | | | | | | | | RS485 and Two Multi-mode fiber 100Base-FX (SFP with LC), One 10/100Base-T (SFP with RJ45) V | | | | | | | | | | RS485 and Three 10/100Base-T (SFP with RJ45)

83 | | | | | | | | | In-zone transformer, IEC 61850, Breaker-and-a-half, and PMU A0 | | | | | | | | | CyberSentry Lvl 1 A2 | | | | | | | | | CyberSentry Lvl 1 and Breaker-and-a-half A3 | | | | | | | | | CyberSentry Lvl 1 and IEC 61850 A5 | | | | | | | | | CyberSentry Lvl 1, IEC 61850, and Breaker-and-a-half A6 | | | | | | | | | CyberSentry Lvl 1 and PMU A7 | | | | | | | | | CyberSentry Lvl 1, IEC 61850, and PMU A8 | | | | | | | | | CyberSentry Lvl 1, PMU, and Breaker-and-a-half A9 | | | | | | | | | CyberSentry Lvl 1, IEC 61850, PMU, and Breaker-and-a-half AO | | | | | | | | | CyberSentry Lvl 1 and In-zone transformer protection AP | | | | | | | | | CyberSentry Lvl 1, IEC 61850, and In-zone transformer protection AQ | | | | | | | | | CyberSentry Lvl 1, PMU, and In-zone transformer protection AR | | | | | | | | | CyberSentry Lvl 1, IEC 61850, P MU, and In-zone transformer protection B0 | | | | | | | | | IEEE 1588 B2 | | | | | | | | | IEEE 1588 and Breaker-and-a-half B3 | | | | | | | | | IEEE 1588 and IEC 61850 B5 | | | | | | | | | IEEE 1588 and IEC 61850 and Breaker-and-a-half B6 | | | | | | | | | IEEE 15 88 and PMU B7 | | | | | | | | | IEEE 1588, I EC 61850, and PMU B8 | | | | | | | | | IEEE 1588, P MU, and Breaker-and-a-half B9 | | | | | | | | | IEEE 1588, I EC 61850, PMU, and Breaker-and-a-half D0 | | | | | | | | | IEEE 15 88 and CyberSentry Lvl 1 BO | | | | | | | | | IEEE 1588 and In-zone transformer protection BP | | | | | | | | | IEEE 15 88, IEC 61850, and In-zone transformer protection BQ | | | | | | | | | IEEE 1588, PMU, and In-zone transformer protection BR | | | | | | | | | IEEE 1588, IEC 61850, PMU, and In-zone transformer protection C0 | | | | | | | | | Parallel Redundancy Proto col (PRP) C2 | | | | | | | | | PRP and Breaker-and-a-half C3 | | | | | | | | | PRP and IEC 61850 C5 | | | | | | | | | PRP, IEC 61850, and Breaker-and-a-half

2-8 L90 Line Current Differential System GE Multilin

2 PRODUCT DESCRIPTION 2.1 INTRODUCTION

Table 2–5: L90 ORDER CODES (HORIZONTAL UNITS WITH PROCESS BUS)

BASE UNIT L90 | | ||| | | | | | |Base Unit

L90 - * ** - * * * - F ** - H ** - L ** - N ** - S ** - W/X ** Full Size Horizontal Mount

C6 | | | | | | | | | PRP and PMU C7 | | | | | | | | | PRP, IEC 61850, and PMU C8 | | | | | | | | | PRP, Breaker-and-a-half, and PMU C9 | | | | | | | | | PRP, IEC 61850, Breaker-and-a-half, and PMU CO | | | | | | | | | PRP and In-zone transformer protection CP | | | | | | | | | PRP, In-zone transformer protection, and IEC 61850 CQ | | | | | | | | | PRP, In-zone transformer protection, and PMU CR | | | | | | | | | PRP, In-zone transformer protection, IEC 61850, and PMU D0 | | | | | | | | | IEEE 15 88 and CyberSentry Lvl 1 D2 | | | | | | | | | IEEE 15 88, CyberSentry Lvl 1, and Breaker-and-a-half D3 | | | | | | | | | IEEE 15 88, CyberSentry Lvl 1, and IEC 61850 D5 | | | | | | | | | IEEE 15 88, CyberSentry Lvl 1, IEC 61850, and Breaker-and-a-half D6 | | | | | | | | | IEEE 15 88, CyberSentry Lvl 1, and PMU D7 | | | | | | | | | IEEE 15 88, CyberSentry Lvl 1, IEC 61850, and PMU D8 | | | | | | | | | IEEE 15 88, CyberSentry Lvl 1, Breaker-and-a-half, and PMU D9 | | | | | | | | | IEEE 15 88, CyberSentry Lvl 1, IEC 61850, Breaker-and-a-half, and PMU DO | | | | | | | | | IEEE 1588, CyberSentry Lvl 1, and In-zone transformer protection DP | | | | | | | | | IEEE 1588, CyberSentry Lvl 1, IEC 61850, and In-zone transformer protection DQ | | | | | | | | | IEEE 1588, CyberSentry Lvl 1, PMU, and In-zone transformer protection DR | | | | | | | | | IEEE 1588, CyberSentry Lvl 1, IEC 61850, PMU, and In-zone transformer protection E0 | | | | | | | | | IEEE 15 88 and PRP E2 | | | | | | | | | IEEE 1588, P RP, and Breaker-and-a-half E3 | | | | | | | | | IEEE 15 88, PRP, and IEC 61850 E5 | | | | | | | | | IEEE 1588, P RP, IEC 61850, and Breaker-and-a-half E6 | | | | | | | | | IEEE 15 88, PRP, and PMU E7 | | | | | | | | | IEEE 1588, P RP, IEC 61850, and PMU E8 | | | | | | | | | IEEE 1588, P RP, Breaker-and-a-half, and PMU E9 | | | | | | | | | IEEE 1588, P RP, IEC 61850, Breaker-and-a-half, and PMU EO | | | | | | | | | IEEE 1588, PRP, and In-zone transformer protection EP | | | | | | | | | IEE E 1588, PRP, In-zone transformer protection, and IEC 61850 EQ | | | | | | | | | IEEE 1588, PRP, In-zone transformer protection, and PMU ER | | | | | | | | | IEEE 1588, PRP, In-zone transformer protection, IEC 61850, and PMU F0 | | | | | | | | | PR P and CyberSentry Lvl 1 F2 | | | | | | | | | PRP, CyberSentry Lvl 1, and Breaker-and-a-half F3 | | | | | | | | | PR P, CyberSentry Lvl 1, and IEC 61850 F5 | | | | | | | | | PRP, CyberSentry Lvl 1, IEC 61850, and Breaker-and-a-half F6 | | | | | | | | | PR P, CyberSentry Lvl 1, and PMU F7 | | | | | | | | | PR P, CyberSentry Lvl 1, IEC 61850, and PMU F8 | | | | | | | | | PR P, CyberSentry Lvl 1, Breaker-and-a-half, and PMU F9 | | | | | | | | | PRP, CyberSentry Lvl 1, IEC 61850, Breaker-and-a-half, and PMU FO | | | | | | | | | PRP, CyberSentry Lvl 1,In-zone transformer protection FP | | | | | | | | | PRP, CyberSentry Lvl 1,In-zone transformer protection, and IEC 61850 FQ | | | | | | | | | PRP, CyberSentry Lvl 1, In-zone transformer protection, and PMU FR | | | | | | | | | PRP, CyberSentry Lvl 1, In-zone transformer protection, IEC 61850, and PMU G0 | | | | | | | | | IEEE 15 88, PRP, and CyberSentry Lvl 1 G2 | | | | | | | | | IEEE 15 88, PRP, CyberSentry Lvl 1, and Breaker-and-a-half G3 | | | | | | | | | IEEE 15 88, PRP, CyberSentry Lvl 1, and IEC 61850 G5 | | | | | | | | | IEEE 15 88, PRP, CyberSentry LVl 1, IEC 61850, and Breaker-and-a-half G6 | | | | | | | | | IEEE 15 88, PRP, CyberSentry Lvl 1, and PMU G7 | | | | | | | | | IEEE 15 88, PRP, CyberSentry Lvl 1, IEC 61850, and PMU G8 | | | | | | | | | IEE E 1588, PRP, CyberSentry Lvl 1, Breaker-and-a-half, and PMU G9 | | | | | | | | | IEEE 15 88, PRP, CyberSentry Lvl 1, IEC 16850, Breaker-and-a-half, and PMU

GO | | | | | | | | | IEEE 15 88, PRP, CyberSentry Lvl 1, In-zone transformer protection

GP | | | | | | | | | IEEE 1588 PRP, CyberSentry Lvl 1, In-zone transformer protection, and IEC 61850

GQ | | | | | | | | | IEEE 15 88, PRP, CyberSentry Lvl 1, In-zone transformer protection, and PMU

GR | | | | | | | | | IEEE 1588, PRP, CyberSentry Lvl 1, In-zone transformer protection, IEC 61850, and PMU H0 | | | | | | | | | CyberSentry Lvl 1, In-zone transformer protection, and Breaker-and-a-half H1 | | | | | | | | | CyberSentry Lvl 1, In-zone transformer protection, IEC 61850, and Breaker-and-a-half H2 | | | | | | | | | CyberSentry Lvl 1, In-zone transformer protection, Breaker-and-a-half, and PMU H3 | | | | | | | | | CyberSentry Lvl 1, In-zone transformer protection, IEC 61850, Breaker-and-a-half, and PMU H4 | | | | | | | | | IEEE 15 88, In-zone transformer protection, and Breaker-and-a-half H5 | | | | | | | | | IEEE 15 88, In-zone transformer protection, IEC 6850, and Breaker-and-a-half H6 | | | | | | | | | IEEE 15 88, In-zone transformer protection, Breaker-and-a-half, and PMU H7 | | | | | | | | | IEEE 15 88, In-zone transformer protection, IEC 61850, Breaker-and-a-half, and PMU H8 | | | | | | | | | PRP, In-zone transformer protection, and Breaker-and-a-half H9 | | | | | | | | | PRP, In-zone transformer protection, IEC 61850, and Breaker-and-a-half HA | | | | | | | | | PRP, In-zone transformer protection, Breaker-and-a-half, and PMU HB | | | | | | | | | PRP, In-zone transformer protection, IEC 61850, Breaker-and-a-half, and PMU HC | | | | | | | | | IEEE 1588, CyberSentry Lvl 1, In-zone transformer prot ection, and Breaker-and-a-half HD | | | | | | | | | IEEE 1588, CyberSentry Lvl 1, In-zone transformer prot ection, IEC 61850, and Breaker-and-a-half HE | | | | | | | | | IEEE 1588, CyberSentry Lvl 1, In-zone transformer protection, Breaker-and-a-half, and PMU HF | | | | | | | | | IEEE 15 88, CyberSentry Lvl 1, In-zone transformer protection, IEC 61580, Breaker-and-a-half, PMU HG | | | | | | | | | IEEE 1588, PRP, In-zone transformer protection, and Breaker-and-a-half HH | | | | | | | | | IEEE 1588, PRP, In-zone transformer protection, IEC 61850, and Breaker-and-a-half

HI | | | | | | | | | IEEE 1588, PRP, In-zone transformer protection, Breaker-and-a-half, and PMU HJ | | | | | | | | | IEEE 1588, P RP, In-zone transformer protection, IE 61850, Breaker-and-a-half, and PMU HK | | | | | | | | | PRP, CyberSentry Lvl 1, In-zone transformer protection, and Breaker-and-a-half HL | | | | | | | | | PRP, CyberSentry Lvl 1, In-zone transformer protection, IEC 61850, and Breaker- and-a-half

HM | | | | | | | | | PRP, CyberSentry Lvl 1, In-zone transformer protection, Breaker-and-a-half, and PMU

HN | | | | | | | | | PRP, CyberSentry Lvl 1, In-zone transformer protection, IEC 61850, Breaker-and-a-half, and PMU HO | | | | | | | | | IEEE 1588, PRP, CyberSentry Lvl 1, In-zone transformer protection, Breaker-and-a-half HP | | | | | | | | | IEEE 1588, PRP, CyberSentry Lvl 1, In-zone transformer protection, IEC 61850, Breaker-and-a -half HQ | | | | | | | | | IEEE 1588, PRP, CyberSentry Lvl 1, In-zone transformer protection, breaker-and-a-hal, and PMU HR | | | | | | | | | IEEE 1588, PRP, CyberSentry Lvl 1, In-zone Tx protection, IEC 61850, breaker-and-a half, and PMU

GE Multilin L90 Line Current Differential System 2-9

2.1 INTRODUCTION 2 PRODUCT DESCRIPTION

Table 2–5: L90 ORDER CODES (HORIZONTAL UNITS WITH PROCESS BUS)

BASE UNIT L90 | | ||| | | | | | |Base Unit MOUNT/COATING H | | | | | | | | Horizontal (19” rack)

POWER SUPPLY (redundant supply must be same type as main supply)

INTER-RELAY COMMUNICATIONS (select a maximum of 1 per unit)

L90 - * ** - * * * - F ** - H ** - L ** - N ** - S ** - W/X ** Full Size Horizontal Mount

A | | | | | | | | Horizontal (19” rack) with harsh environmental coating

D | | | | | | | French display R | | | | | | | Russian display A | | | | | | | Chinese display P | | | | | | | English display with 4 small and 12 large prog rammable pushbuttons G | | | | | | | French display with 4 small and 12 large programmable pushbuttons S | | | | | | | Russian display with 4 small and 12 large progr ammable pushbuttons B | | | | | | | Chinese display with 4 small and 12 large pro grammable pushbuttons K | | | | | | | Enhanced front panel with English display M | | | | | | | Enhanced front panel wit h French display Q | | | | | | | Enhanced front panel with Russian display U | | | | | | | Enhanced front panel with Chinese display L | | | | | | | Enhanced front panel with Engl ish display and user-programmable pushbuttons N | | | | | | | Enhanced front panel with French display and user-programmable pushbuttons T | | | | | | | Enhanced fron t panel with Russian display and user-programmable pushbuttons V | | | | | | | Enhanced front panel with Chinese display and user-progr ammable pushbuttons

4A 4A | 4 Solid-State (no monitoring) MOSFET outputs 4B 4B | 4 Solid-State (voltage with optional current) MOSFET out puts 4C 4C | 4 Solid-State (current with optional voltage) MOSFET outputs 4D 4D | 16 digital inputs with Auto-Burnishing 4L 4L | 14 Form-A (no monitoring) Lat ching outputs 67 67 | 8 Form-A (no monitoring) out puts 6A 6A | 2 Form-A (voltage with optional current) and 2 Form-C outputs, 8 digital inputs 6B 6B | 2 Form-A (voltage with optional current) and 4 Form-C outputs, 4 digital inputs 6C 6C | 8 Form-C outputs 6D 6D | 16 digital inputs 6E 6E | 4 Form-C outputs, 8 dig ital inputs 6F 6F | 8 Fast Form-C outputs 6G 6G | 4 Form-A (voltage with optional current) outputs, 8 digital inputs 6H 6H | 6 Form-A (voltage with optional current) outputs, 4 digital inputs 6K 6K | 4 Form-C and 4 Fast Form-C outputs 6L 6L | 2 Form-A (current with optional voltage) and 2 Form-C outputs, 8 digital inputs 6M 6M | 2 Form-A (current with optional voltage) and 4 For m-C outputs, 4 digital inputs 6N 6N | 4 Form-A (current with optional voltage) outputs, 8 digital inputs 6P 6P | 6 Form-A (current with optional voltage) outputs, 4 digital inputs 6R 6R | 2 Form-A (no monitoring) and 2 Form-C outputs, 8 digi tal inputs 6S 6S | 2 Form-A (no monitoring) and 4 Form-C outputs, 4 digital inputs 6T 6T | 4 Form-A (no monitoring) outputs, 8 digital inputs 6U 6U | 6 Form-A (no monitoring) outputs, 4 digital inputs 6V 6V | 2 Form-A outputs, 1 Form-C output, 2 Form-A (no monitoring) latching outputs, 8 digital inputs

2A C37.94SM, 1300nm single-mode, ELED, 1 channel single-mode 2B C37.94SM, 1300nm single-mode, ELED, 2 channel single-mode 2E Bi-phase, single channel 2F Bi-phase, dual channel

72 1550 nm, single-mode, LASER, 1 Channel 73 1550 nm, single-mode, LASER, 2 Channel 74 Channel 1 - RS422; Channel 2 - 1550 nm, single-mode, LASER 75 Channel 1 - G.703; Channel 2 - 1550 nm, Single-mode LASER 76 IEEE C37.94, 820 nm, 64 kbps, multimode, LED, 1 Channel

77 IEEE C37.94, 820 nm, 64 kbps, multimode, LED, 2 Channels 7A 820 nm, multi-mode, LED, 1 Channel 7B 1300 nm, multi-mode, LED, 1 Channel 7C 1300 nm, single-mode, ELED, 1 Channel 7D 1300 nm, single-mode, LASER, 1 Channel 7E Channel 1 - G.703; Channel 2 - 820 nm, multi-mode 7F Channel 1 - G.703; Channel 2 - 1300 nm, multi-mode 7G Channel 1 - G.703; Channel 2 - 1300 nm, single-mode ELED 7H 820 nm, multi-mode, LED, 2 Channels

7I 1300 nm, multi-mode, LED, 2 Channels

7J 1300 nm, single-mode, ELED, 2 Channels 7K 1300 nm, single-mode, LASER, 2 Channels

7L Channel 1 - RS422; Channel 2 - 820 nm, multi-mode, LED 7M Channel 1 - RS422; Channel 2 - 1300 nm, multi-mo de, LED 7N Channel 1 - RS 422; Channel 2 - 1300 nm, single-mode, ELED 7P Channel 1 - RS422; Channel 2 - 1300 nm, single-mode, LASER 7Q Channel 1 - G.703; Channel 2 - 1300 nm, single-mode LASER 7R G.703, 1 Channel 7S G.703, 2 Channels 7T RS422, 1 Channel 7V RS422, 2 Channels, 2 Clock Inputs 7W RS422, 2 Channels

The order codes for the reduced size vertical mount units with the process bus module are shown below.

Table 2–6: L90 ORDER CODES (REDUCED SIZE VERTICAL UNITS WITH PROCESS BUS)

L90 - * ** - * * * - F ** - H ** - L ** - N ** - R ** Reduced Size Vertical Mount

U | | | | | | | | | RS485 and Two Multi-mode fiber 100Base-FX (SFP with LC), One 10/100Base-T (SFP with RJ45) V | | | | | | | | | RS485 and Three 10/100Base-T (SFP with RJ45)

2-10 L90 Line Current Differential System GE Multilin

2 PRODUCT DESCRIPTION 2.1 INTRODUCTION

Table 2–6: L90 ORDER CODES (REDUCED SIZE VERTICAL UNITS WITH PROCESS BUS)

B8 | | | | | | | | IEEE 1588, PMU, and Breaker- and-a-half B9 | | | | | | | | IEEE 1588, IEC 61850, PMU, and Breaker -and-a-half BO | | | | | | | | IEEE 1588 and I n-zone transformer protection BP | | | | | | | | IEEE 1588, IEC 61850, and In-zone transformer protection BQ | | | | | | | | IEEE 1588, P MU, and In-zone transformer protection BR | | | | | | | | IEEE 1588, IEC 61850, PMU, and In-zone transformer protection C0 | | | | | | | | Parallel Redundancy Protocol (PRP) C2 | | | | | | | | PRP and Breaker-and-a-half C3 | | | | | | | | PRP and IEC 61850 C5 | | | | | | | | PRP, IEC 61850, and Breaker-and-a-half C6 | | | | | | | | PRP and PMU C7 | | | | | | | | PRP, IEC 61850, and PMU C8 | | | | | | | | PRP, Breaker-and-a-half, and PMU C9 | | | | | | | | PRP, IEC 61850, Breaker-and-a-half, and PMU CO | | | | | | | | PRP and In-zone transformer prot ection CP | | | | | | | | PRP, In-zone transformer protection, and IEC 61850 CQ | | | | | | | | PRP, In-zone transformer protection, and PMU CR | | | | | | | | PRP, In-zone transformer protection, IEC 61850, and PMU D0 | | | | | | | | IEEE 1588 and CyberSentry Lvl 1 D2 | | | | | | | | IEEE 1588, CyberSentry Lvl 1, and IEC 61850 D3 | | | | | | | | IEEE 1588, CyberSentry Lvl 1, and IEC 61850 D5 | | | | | | | | IEEE 1588, CyberSentry Lvl 1, and IEC 61850 D6 | | | | | | | | IEEE 1588, CyberSentry Lvl 1, and PMU D7 | | | | | | | | IEEE 1588, CyberSentry Lvl 1, IEC 61850, and P MU D8 | | | | | | | | IEEE 1588, CyberSentry Lvl 1, IEC 61850, and P MU D9 | | | | | | | | IEEE 1588, CyberSentry Lvl 1, IEC 61850, PMU , and Breaker-and-a-half DO | | | | | | | | IEEE 1588, CyberSentry Lvl 1, and In-zone transformer protection DP | | | | | | | | IEEE 1588, CyberSentry Lvl 1, IEC 61850, and In-zone transformer protection DQ | | | | | | | | IEEE 1588, CyberSentry Lvl 1, PMU, and In-zone transformer protection DR | | | | | | | | IEEE 1588, Cy berSentry Lvl 1, IEC 61850, PMU, and In-zone transformer protection E0 | | | | | | | | IEEE 1588 and PRP E2 | | | | | | | | IEEE 1588, PRP, and Breaker-and-a-half E3 | | | | | | | | IEEE 1588, PRP, and IEC 61850 E5 | | | | | | | | IEEE 1588, PRP, IEC 61850, and Breaker-and-a-half E6 | | | | | | | | IEEE 1588, PRP, and PMU E7 | | | | | | | | IEEE 1588, PRP, IEC 61850, and PMU E8 | | | | | | | | IEEE 1588, PRP, Breaker-and-a-half, and PMU E9 | | | | | | | | IEEE 1588, PRP, IEC 61850, Breaker-and-a-half, and PMU EO | | | | | | | | IEEE 1588, P RP, and In-zone transformer protection EP | | | | | | | | IEEE 1588, PRP, In-zone transformer protection, and IEC 61850 EQ | | | | | | | | IEEE 1588, P RP, In-zone transformer protection, and PMU ER | | | | | | | | IEEE 1588, PRP, In-zone transformer protection, IEC 61850, and PMU F0 | | | | | | | | PRP and CyberSentry Lvl 1 F2 | | | | | | | | PRP, CyberSentry Lvl 1, and Breaker-and-a-half F3 | | | | | | | | PRP, CyberSentry Lvl 1, and IEC 61850 F5 | | | | | | | | PRP, CyberSentry Lvl 1, IEC 61850, and Breaker-and-a-half F6 | | | | | | | | PRP, CyberSentry Lvl 1, and PMU F7 | | | | | | | | PRP, CyberSentry Lvl 1, IEC 61850, and PMU F8 | | | | | | | | PRP, CyberSentry Lvl 1, Breaker-and-a-half, and PMU F9 | | | | | | | | PRP, CyberSentry Lvl 1, IEC 61850, Breaker-and-a-half, and PMU FO | | | | | | | | PRP, CyberSentry Lvl 1,In-zone transformer protection FP | | | | | | | | PRP, CyberSentry Lvl 1,In-zone transformer protection, and IEC 61850 FQ | | | | | | | | PRP, CyberSentry Lvl 1, In-zone transformer protection, and PMU FR | | | | | | | | PRP, CyberSentry Lvl 1, In-zone transformer protection, IEC 61850, and PMU G0 | | | | | | | | IEEE 1588, PRP, and CyberSentry Lvl 1 G2 | | | | | | | | IEEE 1588, PRP, CyberSentry Lvl 1, and Breaker-and-a-half G3 | | | | | | | | IEEE 1588, PRP, CyberSentry Lvl 1, and IEC 61850 G5 | | | | | | | | IEEE 1588, PRP, CyberSentry LVl 1, IEC 61850, and Breaker-and-a-half G6 | | | | | | | | IEEE 1588, PRP, CyberSentry Lvl 1, and PMU G7 | | | | | | | | IEEE 1588, PRP, CyberSentry Lvl 1, IEC 61850, and PMU G8 | | | | | | | | IEEE 1588, PRP, CyberSentry Lvl 1, Breaker-and-a-half, and PMU G9 | | | | | | | | IEEE 1588, PRP, CyberSentry Lvl 1, IEC 16850, Breaker-and-a-half, and PMU GO | | | | | | | | IEEE 1588, PRP, CyberSentry Lvl 1, In-zone transformer protection GP | | | | | | | | IEEE 1588 PRP, CyberSentry Lvl 1, In-zone transformer protection, and IE C 61850 GQ | | | | | | | | IEEE 1588, PRP, CyberSentry Lvl 1, In-zone transformer protection, and PMU GR | | | | | | | | IEEE 1588, PRP, CyberSentry Lvl 1, In-zone transformer protection, IEC 61850, and PMU H0 | | | | | | | | CyberSentry Lvl 1, In-zone transformer protection, and Breaker-and-a-half H1 | | | | | | | | CyberSentry Lvl 1, In-zone transformer protection, IE C 61850, and Breaker-and-a-half H2 | | | | | | | | CyberSentry Lvl 1, In-zone transformer protection, Br eaker-and-a-half, and PMU H3 | | | | | | | | CyberSentry Lvl 1, In-zone transformer protection, IE C 61850, Breaker-and-a-half, and PMU H4 | | | | | | | | IEEE 1588, In-zone transformer protection, and Br eaker-and-a-half H5 | | | | | | | | IEEE 1588, In-zone transformer protection, IEC 6850, and Breaker-and-a-half H6 | | | | | | | | IEEE 1588, In-zone transformer protection, Breaker-and- a-half, and PMU H7 | | | | | | | | IEEE 1588, In-zone transformer protection, IEC 61850, Breaker-an d-a-half, and PMU H8 | | | | | | | | PRP, In-zone transformer protection, and Breaker-and-a-half H9 | | | | | | | | PRP, In-zone transformer protection, IEC 61850, and Breaker-and-a-half HA | | | | | | | | PRP, In-zone transformer protection, Breaker-and-a-half, and PMU HB | | | | | | | | PRP, In-zone transformer protection, IEC 61850, Breaker-and-a-half, and PMU HC | | | | | | | | IEEE 1588, C yberSentry Lvl 1, In-zone transformer protection, and Breaker-and-a-half HD | | | | | | | | IEEE 1588, CyberS entry Lvl 1, In-zone transformer protection, IEC 61850, and Breaker-and-a-half HE | | | | | | | | IEEE 1588, CyberSentry Lvl 1, In-zone transformer protection, Breaker-and-a-half, and PMU HF | | | | | | | | IEEE 1588, CyberSentry Lvl 1, In-zone transformer protection, IEC 61580, Breaker-and-a-half, PMU HG | | | | | | | | IEEE 1588, PRP, In-zone transformer protection, and Breaker-and-a-half HH | | | | | | | | IEEE 1588, P RP, In-zone transformer protection, IEC 61850, and Breaker-and-a-half

HI | | | | | | | | IEEE 1588, PRP, In-zone transformer protection, Breaker-and-a-half, and PMU HJ | | | | | | | | IEEE 1588, PRP, In-zone transformer protection, IE 61850, Breaker-and-a-half, and PMU HK | | | | | | | | PRP, CyberSentry Lvl 1, In-zone transformer protection, and Breaker-and-a-half HL | | | | | | | | PRP, CyberSentry Lvl 1, In-zone transformer protection, IEC 61850, and Breaker-and-a-half HM | | | | | | | | PRP, CyberSentry Lvl 1, In-zone transformer protection, Breaker-and-a-half, and PMU HN | | | | | | | | PRP, CyberSentry Lvl 1, In-zone transformer protection, IEC 61850, Breaker-and -a-half, and PMU HO | | | | | | | | IEEE 1588, PRP, CyberSentry Lvl 1, In-zone transformer protection, Breaker-and-a-half HP | | | | | | | | IEEE 1588, PRP, CyberSentry Lvl 1, In-zone transformer protection, IEC 61850, Breaker-and-a-half HQ | | | | | | | | IEEE 1588, PRP, CyberSentry Lvl 1, In-zone transformer protection, breaker-and-a-hal, and PMU

HR | | | | | | | | IEEE 1588, PRP, CyberSentry Lvl 1, In-zone Tx protection, IEC 61850, breaker-and- a half, and PMU

B | | | | | | | Vertical (3/4 rack) with harsh environmental coating

GE Multilin L90 Line Current Differential System 2-11

2.1 INTRODUCTION 2 PRODUCT DESCRIPTION

NOTE

Table 2–6: L90 ORDER CODES (REDUCED SIZE VERTICAL UNITS WITH PROCESS BUS)

PROCESS BUS MODULE | 81 | | | Eight-port digital process bus module DIGITAL INPUTS/OUTPUTS XX XX XX XX No Module

INTER-RELAY COMMUNICATIONS (select a maximum of 1 per unit)

L | | | | | 24 to 48 V (DC only) power supply

4A | 4 Solid-State (no monitoring) MOSFET outputs

4B | 4 Solid-State (voltage with optional current) MOSFET outputs 4C | 4 Solid-State (current with optional voltage) MOSFET outputs 4D | 16 digital inputs with Auto-Burnishing 4L | 14 For m-A (no monitoring) Latching outputs 67 | 8 For m-A (no monitoring) outputs 6A | 2 Form-A (voltage with optional current) and 2 Form-C outputs, 8 digital inputs 6B | 2 Form-A (voltage with optional current) and 4 Form-C outputs, 4 digital inputs 6C | 8 Form-C outputs 6D | 16 digital inputs 6E | 4 Form-C outputs, 8 digital inputs 6F | 8 Fast Form-C outputs 6G | 4 Form-A (voltage with optional current) outputs, 8 digital inputs 6H | 6 Form-A (voltage with optional current) outp uts, 4 digital inputs 6K | 4 Form-C and 4 Fast Form-C outputs 6L | 2 For m-A (current with optional voltage) and 2 Form-C outputs, 8 digital inputs 6M | 2 Form-A (current with optional voltage) and 4 Form-C outputs, 4 digital inputs 6N | 4 Form-A (current with optional voltage) outputs, 8 digital inputs 6P | 6 Form-A (current with optional voltage) outp uts, 4 digital inputs 6R | 2 Form-A (no monitoring) and 2 For m-C outputs, 8 digital inputs 6S | 2 Form-A (no monitoring) and 4 Form-C outputs, 4 digital inputs 6T | 4 Form-A (no monitoring) outputs, 8 digital inputs 6U | 6 Form-A (no monitoring) outputs, 4 digital inputs 6V | 2 Form-A outputs, 1 Form-C output, 2 Form-A (no monitoring) latching outputs, 8 digital inputs

7I 1300 nm, multi-mode, LED, 2 Channels 7J 1300 nm, single-mode, ELE D, 2 Channels 7K 1300 nm, single-mode, LASER, 2 Channels 7L Channel 1 - RS422; Channel 2 - 820 n m, multi-mode, LED 7M Channel 1 - RS422; Channel 2 - 1300 nm, multi-mode, LED 7N Channel 1 - RS422; Channel 2 - 1300 nm, single-mode, ELED 7P Channel 1 - RS422; Channel 2 - 1300 nm, single-mode, LASER 7Q Channel 1 - G.703; Channel 2 - 1300 nm, single-mode LASER 7R G.703, 1 Channel 7S G.703, 2 Channels 7T RS422, 1 Channel 7V RS422, 2 Channels, 2 Clock Inputs 7W RS422, 2 Channels

2.1.4 REPLACEMENT MODULES

Replacement modules can be ordered separately. When ordering a replacement CPU module or faceplate, provide the serial number of your existing unit.

Not all replacement modules may be applicable to the L90 relay. Only the modules specified in the order codes are available as replacement modules.

Replacement module codes are subject to change without notice. See the GE Multilin ordering page at

http://www.gedigitalenergy.com/multilin/order.htm

for the latest L90 ordering options.

2-12 L90 Line Current Differential System GE Multilin

2 PRODUCT DESCRIPTION 2.1 INTRODUCTION

The replacement module order codes for the horizontal mount units are shown below.

Table 2–7: ORDER CODES FOR REPLACEMENT MODULES, HORIZONTAL UNITS

POWER SUPPLY (redundant supply only available in horizontal units; must be same type as main supply) CPU | T | RS485 with 3 100Base-FX Ethernet, multimode, SFP with LC

FACEPLATE/DISPLAY | 3C | Hor izontal faceplate with keypad and English display

DIGITAL INPUTS AND OUTPUTS | 4A | 4 Solid-State (no monitoring) MOSFET o utputs

CT/VT MODULES (NOT AVAILABLE FOR THE C30)

INTER-RELAY COMMUNICATIONS | 2A | C37.94SM, 1300nm single-mode, ELED, 1 channel single-mode

TRANSDUCER INPUTS/OUTPUTS

UR - ** - *

| RH H | Redundant 125 / 2 50 V AC/DC | RL H | Redundant 24 to 48 V (DC only)

| U | RS485 with 1 100Base-T Ethern et, SFP RJ-45 + 2 100Base-FX Ethernet, multimode, SFP with LC | V | RS485 with 3 100Base-T Ethernet, SFP with RJ-45

| 3D | Hor izontal faceplate with keypad and French display | 3R | Hor izontal faceplate with keypad and Russian display | 3A | Horizontal faceplate wit h keypad and Chinese display | 3P | Horizontal faceplate wit h keypad, user-programmable pushbuttons, and English display | 3G | Horizontal faceplate with keypad, user-programmable pushbuttons, and French display | 3S | Horizontal faceplate with keypad, user-programmable pushbuttons, and Russian display | 3B | Horizontal faceplate wit h keypad, user-programmable pushbuttons, and Chinese display | 3K | Enhanced fro nt panel with English display | 3M | Enhanced front panel with French display | 3Q | Enhanced front panel with Russian display | 3U | Enhanced front panel with Chinese display | 3L | Enhanced front panel with English display and user-programmable pushbuttons | 3N | Enhanced front panel with French display and user-programmable pushbuttons | 3T | Enhanced front panel with Russian display and user-programmable pushbuttons | 3V | Enhanced fro nt panel with Chinese display and user-programmable pushbuttons

| 4B | 4 Solid-State (voltage with optional current) MOSFET outputs | 4C | 4 Solid-State (current with optional voltage) MOSFET out puts | 4D | 16 digital inputs with Auto-B urnishing | 4L | 14 Form-A (no monitorin g) Latching outputs | 67 | 8 Form-A (no monitoring ) outputs | 6A | 2 Form-A (voltage with optional current) and 2 Form-C outputs, 8 digital inputs | 6B | 2 Form-A (voltage with optional current) and 4 Form-C outputs, 4 digital inputs | 6C | 8 Form-C outputs | 6D | 16 digital inputs | 6E | 4 Form-C outputs, 8 digital inputs | 6F | 8 Fast Form-C outputs | 6G | 4 Form -A (voltage with optional current) outputs, 8 digital inputs | 6H | 6 Form-A (voltage wit h optional current) outputs, 4 digital inputs | 6K | 4 Form-C and 4 Fast Form-C outputs | 6L | 2 Form-A (current with optional voltage) and 2 Form-C outputs, 8 digital inputs | 6M | 2 Form-A (current with optiona l voltage) and 4 Form-C outputs, 4 digital inputs | 6N | 4 Form-A (curr ent with optional voltage) outputs, 8 digital inputs | 6P | 6 Form-A (current with optional voltage) outputs, 4 digital inputs | 6R | 2 Form-A (no monitoring) and 2 Form-C outputs, 8 digital inputs | 6S | 2 Form-A (no monitoring) and 4 Form-C outputs, 4 digital inputs | 6T | 4 Form-A (no monitoring) outputs, 8 digital inputs | 6U | 6 Form-A (no monitoring) outputs, 4 digital inputs | 6V | 2 Form-A outputs, 1 Form-C output, 2 Form-A (no monitoring) latching outputs, 8 digital inputs | 8F | Standard 4CT/4VT | 8G | Sensitive Ground 4CT/4VT | 8H | Standard 8CT | 8J | Sensitive Ground 8CT | 8L | Standard 4CT/4VT with enhanced diagnostics | 8M | Sensitive Ground 4CT/4VT with enhanced diagnostics | 8N | Standard 8CT with enhanced diagnostics | 8R | Sensit ive Ground 8CT with enhanced diagnostics

| 2B | C37.94SM, 1300nm single-mode, ELED, 2 channel single-mode | 2E | Bi-phase, single channel | 2F | Bi-phase, dual channel | 2G | IEEE C 37.94, 820 nm, 128 kbps, multimode, LED, 1 Channel | 2H | IEEE C37.94 , 820 nm, 128 kbps, multimode, LED, 2 Channels | 72 | 1550 nm, single-mode, LASER, 1 Channel | 73 | 1550 nm, single-mode, LASER, 2 Channel | 74 | Channel 1 - RS422; Channel 2 - 1550 nm, single-mode, LASER | 75 | Channel 1 - G.703; Channel 2 - 1550 nm, Single-mode LASER | 76 | IEEE C37.94, 820 nm, multimode, LED , 1 Channel | 77 | IEEE C37.94, 820 nm, multimode, LED , 2 Channels | 7A | 820 nm, multi-mode, LED, 1 Channel | 7B | 1300 nm, multi-mode, LED, 1 Channel | 7C | 1300 nm, single-mode, EL ED, 1 Channel | 7D | 1300 nm, single-mode, LA SER, 1 Channel | 7E | Channel 1 - G.703; Channel 2 - 820 nm, multi-mode | 7F | Channel 1 - G.703; Channel 2 - 1300 nm, multi-mode | 7G | Channel 1 - G.703; Channel 2 - 1300 nm, single-mode ELED | 7H | 820 nm, multi-mode, LE D, 2 Channels | 7I | 1300 nm, multi-mode, LED, 2 Channels | 7J | 1300 nm, single-mode, ELED, 2 Channels | 7K | 1300 nm, single-mode, LASER, 2 Channels | 7L | Channel 1 - RS422; Channel 2 - 820 nm, multi-mode, LED | 7M | Channel 1 - RS422; Channel 2 - 1300 nm, multi- mode, LED | 7N | Channel 1 - RS422; Channel 2 - 1300 nm, single-mode, ELED | 7P | Channel 1 - RS422; Channel 2 - 1300 nm, single-mode, LASER | 7Q | Channel 1 - G.703; Channel 2 - 1300 nm, single-mode LASER | 7R | G.703, 1 Channel | 7S | G.703, 2 Channels | 7T | RS422, 1 Channel | 7V | RS422, 2 Channels, 2 Clock Inputs | 7W | RS422, 2 Channels | 5A | 4 dcmA inputs, 4 dcmA out puts (only one 5A module is allowed) | 5C | 8 RTD inputs | 5D | 4 RTD inputs, 4 dcmA outp uts (only one 5D module is allowed) | 5E | 4 dcmA inputs, 4 RTD inputs | 5F | 8 dcmA inputs

GE Multilin L90 Line Current Differential System 2-13

2.1 INTRODUCTION 2 PRODUCT DESCRIPTION

The replacement module order codes for the reduced-size vertical mount units are shown below.

Table 2–8: ORDER CODES FOR REPLACEMENT MODULES, VERTICAL UNITS

POWER SUPPLY | RH V | 125 / 250 V AC/DC

CPU | T | RS485 with 3 100Base-FX Ethernet, multimode, SFP with LC

FACEPLATE/DISPLAY | 3F | Vertical faceplate with keypad and English display

DIGITAL INPUTS/OUTPUTS

CT/VT MODULES (NOT AVAILABLE FOR THE C30)

INTER-RELAY COMMUNICATIONS | 2A | C37.94SM, 1300nm single-mode, ELED, 1 channel single-mode

TRANSDUCER INPUTS/OUTPUTS

UR - ** - *

| RL V | 24 to 48 V (DC only)

| U | RS485 with 1 100Base-T Ethern et, SFP RJ-45 + 2 100Base-FX Ethernet, multimode, SFP with LC | V | RS485 with 3 100Base-T Ethernet, SFP with RJ-45

| 3D | Vertical faceplate with keypad and French display | 3R | Vertical faceplate with keypad and Russian display | 3K | Vertical faceplate with keypad and Chinese display | 3K | Enhanced fro nt panel with English display | 3M | Enhanced front panel with French display | 3Q | Enhanced front panel with Russian display | 3U | Enhanced front panel with Chinese display | 3L | Enhanced front panel with English display and user-programmable pushbuttons | 3N | Enhanced front panel with French display and user-programmable pushbuttons | 3T | Enhanced front panel with Russian display and user-programmable pushbuttons | 3V | Enhanced fro nt panel with Chinese display and user-programmable pushbuttons | 4A | 4 Solid-State (no monitoring) MOSFET outputs | 4B | 4 Solid-State (voltage with optional current) MOSFET outputs | 4C | 4 Solid-State (current with optional voltage) MOSFET out puts | 4D | 16 digital inputs with Auto-B urnishing | 4L | 14 Form-A (no monitorin g) Latching outputs | 67 | 8 Form-A (no monitoring ) outputs | 6A | 2 Form-A (voltage with optional current) and 2 Form-C outputs, 8 digital inputs | 6B | 2 Form-A (voltage with optional current) and 4 Form-C outputs, 4 digital inputs | 6C | 8 Form-C outputs | 6D | 16 digital inputs | 6E | 4 Form-C outputs, 8 digital inputs | 6F | 8 Fast Form-C outputs | 6G | 4 Form -A (voltage with optional current) outputs, 8 digital inputs | 6H | 6 Form-A (voltage wit h optional current) outputs, 4 digital inputs | 6K | 4 Form-C and 4 Fast Form-C outputs | 6L | 2 Form-A (current with optional voltage) and 2 Form-C outputs, 8 digital inputs | 6M | 2 Form-A (current with optiona l voltage) and 4 Form-C outputs, 4 digital inputs | 6N | 4 Form-A (curr ent with optional voltage) outputs, 8 digital inputs | 6P | 6 Form-A (current with optional voltage) outputs, 4 digital inputs | 6R | 2 Form-A (no monitoring) and 2 Form-C outputs, 8 digital inputs | 6S | 2 Form-A (no monitoring) and 4 Form-C outputs, 4 digital inputs | 6T | 4 Form-A (no monitoring) outputs, 8 digital inputs | 6U | 6 Form-A (no monitoring) outputs, 4 digital inputs | 6V | 2 Form-A outputs, 1 Form-C output, 2 Form-A (no monitoring) latching outputs, 8 digital inputs | 8F | Standard 4CT/4VT | 8G | Sensitive Ground 4CT/4VT | 8H | Standard 8CT | 8L | Standard 4CT/4VT with enhanced diagnostics | 8N | Standard 8CT with enhanced diagnostics

| 2B | C37.94SM, 1300nm single-mode, ELED, 2 channel single-mode | 2E | Bi-phase, single channel | 2F | Bi-phase, dual channel | 2G | IEEE C 37.94, 820 nm, 128 kbps, multimode, LED, 1 Channel | 2H | IEEE C37.94 , 820 nm, 128 kbps, multimode, LED, 2 Channels | 72 | 1550 nm, single-mode, LASER, 1 Channel | 73 | 1550 nm, single-mode, LASER, 2 Channel | 74 | Channel 1 - RS422; Channel 2 - 1550 nm, single-mode, LASER | 75 | Channel 1 - G.703; Channel 2 - 1550 nm, Single-mode LASER | 76 | IEEE C37.94, 820 nm, 64 kbps, multimode, LED, 1 Channel | 77 | IEEE C37.94, 820 nm, 64 kbps, multimode, LED, 2 Channels | 7A | 820 nm, multi-mode, LED, 1 Channel | 7B | 1300 nm, multi-mode, LED, 1 Channel | 7C | 1300 nm, single-mode, EL ED, 1 Channel | 7D | 1300 nm, single-mode, LA SER, 1 Channel | 7E | Channel 1 - G.703; Channel 2 - 820 nm, multi-mode | 7F | Channel 1 - G.703; Channel 2 - 1300 nm, multi-mode | 7G | Channel 1 - G.703; Channel 2 - 1300 nm, single-mode ELED | 7H | 820 nm, multi-mode, LED , 2 Channels | 7I | 1300 nm, multi-mode, LED, 2 Channels | 7J | 1300 nm, single-mode, ELED, 2 Channels | 7K | 1300 nm, single-mode, LASER, 2 Channels | 7L | Channel 1 - RS422; Channel 2 - 820 nm, multi-mode, LED | 7M | Channel 1 - RS422; Channel 2 - 1300 nm, multi- mode, LED | 7N | Channel 1 - RS422; Channel 2 - 1300 nm, single-mode, ELED | 7P | Channel 1 - RS422; Channel 2 - 1300 nm, single-mode, LASER | 7Q | Channel 1 - G.703; Channel 2 - 1300 nm, single-mode LASER | 7R | G.703, 1 Channel | 7S | G.703, 2 Channels | 7T | RS422, 1 Channel | 7V | RS422, 2 Channels, 2 Clock Inputs | 7W | RS422, 2 Channels | 5A | 4 dcmA inputs, 4 dcmA out puts (only one 5A module is allowed) | 5C | 8 RTD inputs | 5D | 4 RTD inputs, 4 dcmA outp uts (only one 5D module is allowed) | 5E | 4 dcmA inputs, 4 RTD inputs | 5F | 8 dcmA inputs

2-14 L90 Line Current Differential System GE Multilin

2 PRODUCT DESCRIPTION 2.2 PILOT CHANNEL RELAYING

2.2PILOT CHANNEL RELAYING 2.2.1 INTER-RELAY COMMUNICATIONS

Dedicated inter-relay communications may operate over 64 kbps digital channels or dedicated fiber optic channels. Available interfaces include:

• RS422 at 64 kbps

• G.703 at 64 kbps

• Dedicated fiber optics at 64 kbps. The fiber optic options include:

– 820 nm multi-mode fiber with an LED transmitter

– 1300 nm multi-mode fiber with an LED transmitter

– 1300 nm single-mode fiber with an ELED transmitter

– 1300 nm single-mode fiber with a laser transmitter

– 1550 nm single-mode fiber with a laser transmitter

– IEEE C37.94 820 nm multi-mode fiber with an LED transmitter

All fiber optic options use an ST connector. L90 models are available for use on two or three terminal lines. A two terminal line application requires one bidirectional channel. However, in two terminal line applications, it is also possible to use an L90 relay with two bidirectional channels. The second bidirectional channel will provide a redundant backup channel with automatic switchover if the first channel fails.

The L90 current differential relay is designed to function in a peer-to-peer or master-to-master architecture. In the peer-topeer architecture, all relays in the system are identical and perform identical functions in the current differential scheme. In order for every relay on the line to be a peer, each relay must be able to communicate with all of the other relays. If there is a failure in communications among the relays, the relays revert to a master-to-peer architecture on a three-terminal system, with the master as the relay that has current phasors from all terminals. Using two different operational modes increases the dependability of the current differential scheme on a three-terminal system by reducing reliance on communications.

The main difference between a master and a slave L90 is that only a master relay performs the actual current differential calculation, and only a master relay communicates with the relays at all other terminals of the protected line.

At least one master L90 relay must have live communications to all other terminals in the current differential scheme; the other L90 relays on that line may operate as slave relays. All master relays in the scheme will be equal, and each will perform all functions. Each L90 relay in the scheme will determine if it is a master by comparing the number of terminals on the line to the number of active communication channels.

The slave terminals only communicate with the master; there is no slave-to-slave communications path. As a result, a slave L90 relay cannot calculate the differential current. When a master L90 relay issues a local trip signal, it also sends a direct transfer trip (DTT) signal to all of the other L90 relays on the protected line.

If a slave L90 relay issues a trip from one of its backup functions, it can send a transfer trip signal to its master and other slave relays if such option is designated. Because a slave cannot communicate with all the relays in the differential scheme, the master will then “broadcast” the direct transfer trip (DTT) signal to all other terminals.

The slave L90 Relay performs the following functions:

• Samples currents and voltages

• Removes DC offset from the current via the mimic algorithm

• Creates phaselets

• Calculates sum of squares data

• Transmits current data to all master L90 relays

• Performs all local relaying functions

• Receives current differential DTT and Direct Input signals from all other L90 relays

• Transmits direct output signals to all communicating relays

• Sends synchronization information of local clock to all other L90 clocks

The master L90 relay performs the following functions:

GE Multilin L90 Line Current Differential System 2-15

2.2 PILOT CHANNEL RELAYING 2 PRODUCT DESCRIPTION

IED-1

IED-2

IED-3

CHn

Optional redundant channel

Typical two-terminal application

Typical three-terminal application

831009A5.CDR

• Performs all functions of a slave L90

• Receives current phasor information from all relays

• Performs the current differential algorithm

• Sends a current differential DTT signal to all L90 relays on the protected line

In the peer-to-peer mode, all L90 relays act as masters.

The L90 has logic to detect that the communications channel is deteriorating or has failed completely. This can provide an

Figure 2–2: COMMUNICATIONS PATHS

2.2.2 CHANNEL MONITOR

alarm indication and disable the current differential protection. Note that a failure of the communications from the master to a slave does not prevent the master from performing the current differential algorithm; failure of the communications from a slave to the master will prevent the master from performing the correct current differential logic. Channel propagation delay is being continuously measured and adjusted according to changes in the communications path. Every relay on the protection system can assigned an unique ID to prevent advertent loopbacks at multiplexed channels.

2-16 L90 Line Current Differential System GE Multilin

2 PRODUCT DESCRIPTION 2.2 PILOT CHANNEL RELAYING

2.2.3 LOOPBACK TEST

This option allows the user to test the relay at one terminal of the line by looping the transmitter output to the receiver input; at the same time, the signal sent to the remote will not change. A local loopback feature is included in the relay to simplify single ended testing.

2.2.4 DIRECT TRANSFER TRIPPING

The L90 includes provision for sending and receiving a single-pole direct transfer trip (DTT) signal from current differential protection between the L90 relays at the line terminals using the pilot communications channel. The user may also initiate an additional eight pilot signals with an L90 communications channel to create trip, block, or signaling logic. A FlexLogic operand, an external contact closure, or a signal over the LAN communication channels can be assigned for that logic.

GE Multilin L90 Line Current Differential System 2-17

2.3 FUNCTIONALITY 2 PRODUCT DESCRIPTION

2.3FUNCTIONALITY 2.3.1 PROTECTION AND CONTROL FUNCTIONS

• Current differential protection: The current differential algorithms used in the L90 Line Current Differential System are based on the Fourier transform phaselet approach and an adaptive statistical restraint. The L90 uses per-phase differential at 64 kbps with two phaselets per cycle. A detailed description of the current differential algorithms is found in chapter 8. The current differential protection can be set in a percentage differential scheme with a single or dual slope.

• Backup protection: In addition to the primary current differential protection, the L90 Line Current Differential System incorporates backup functions that operate on the local relay current only, such as directional phase overcurrent, directional neutral overcurrent, negative-sequence overcurrent, undervoltage, overvoltage, and distance protection.

• Multiple setting groups: The relay can store six groups of settings. They may be selected by user command, a configurable contact input or a FlexLogic equation to allow the relay to respond to changing conditions.

• User-programmable logic: In addition to the built-in protection logic, the relay may be programmed by the user via FlexLogic equations.

• Configurable inputs and outputs: All of the contact converter inputs (digital inputs) to the relay may be assigned by the user to directly block a protection element, operate an output relay or serve as an input to FlexLogic equations. All of the outputs, except for the self test critical alarm contacts, may also be assigned by the user.

2.3.2 METERING AND MONITORING FUNCTIONS

• Metering: The relay measures all input currents and calculates both phasors and symmetrical components. When AC potential is applied to the relay via the optional voltage inputs, metering data includes phase and neutral current, phase voltage, three phase and per phase W, VA, and var, and power factor. Frequency is measured on either current or voltage inputs. They may be called onto the local display or accessed via a computer. All terminal current phasors and differential currents are also displayed at all relays, allowing the user opportunity to analyze correct polarization of currents at all terminals.

• Event records: The relay has a sequence of events recorder which combines the recording of snapshot data and oscillography data. Events consist of a broad range of change of state occurrences, including input contact changes, measuring-element pickup and operation, FlexLogic equation changes, and self-test status. The relay stores up to 1024 events with the date and time stamped to the nearest microsecond. This provides the information needed to determine a sequence of events, which can reduce troubleshooting time and simplify report generation after system events.

• Oscillography: The relay stores oscillography data at a sampling rate of 64 times per cycle. The relay can store a maximum of 64 records. Each oscillography file includes a sampled data report consisting of:

– Instantaneous sample of the selected currents and voltages (if AC potential is used),

– The status of each selected contact input.

– The status of each selected contact output.

– The status of each selected measuring function.

– The status of various selected logic signals, including virtual inputs and outputs.

The captured oscillography data files can be accessed via the remote communications ports on the relay.

• CT failure and current unbalance alarm: The relay has current unbalance alarm logic. The unbalance alarm may be supervised by a zero-sequence voltage detector. The user may block the relay from tripping when the current unbalance alarm operates.

• Trip circuit monitor: On those outputs designed for trip duty, a trip voltage monitor will continuously measure the DC voltage across output contacts to determine if the associated trip circuit is intact. If the voltage dips below the minimum voltage or the breaker fails to open or close after a trip command, an alarm can be activated.

• Self-test: The most comprehensive self testing of the relay is performed during a power-up. Because the system is not performing any protection activities at power-up, tests that would be disruptive to protection processing may be performed. The processors in the CPU and all CT/VT modules participate in startup self-testing. Self-testing checks approximately 85 to 90% of the hardware, and CRC/check-sum verification of all PROMs is performed. The proces-

2-18 L90 Line Current Differential System GE Multilin

2 PRODUCT DESCRIPTION 2.3 FUNCTIONALITY

831732A3.CDR

Sample Raw

Value

Sample Raw

Value

Sample

Hold

Master

Clock

Remote Relay

Communications

Interface

Phase and Frequency

Locked Loop (PFLL)

Phase

Deviation

Frequency

Deviation

Charging Current

Comp.

Offset

Removal

Offset

Removal

Filter

PFLL Status

Compute

Phaselets

Compute

Phaselets

Compute

Phaselets

UR Platform

Phasors

Computations

Disturbance

Detector

67P&N

50P,N&G

51P,N&G

27P

59P

87L

Algorithm

21P&G

Trip Output

Configurable

Logic

Direct Transfer Trip

PHASELETS TO REMOTE

PHASELETS FROM REMOTE

sors communicate their results to each other so that if any failures are detected, they can be reported to the user. Each processor must successfully complete its self tests before the relay begins protection activities.

During both startup and normal operation, the CPU polls all plug-in modules and checks that every one answers the poll. The CPU compares the module types that identify themselves to the relay order code stored in memory and declares an alarm if a module is either non-responding or the wrong type for the specific slot. When running under normal power system conditions, the relay processors will have idle time. During this time, each processor performs background self-tests that are not disruptive to the foreground processing.

2.3.3 OTHER FUNCTIONS

a) ALARMS

The relay contains a dedicated alarm relay, the critical failure alarm, housed in the power supply module. This output relay is not user programmable. This relay has form-C contacts and is energized under normal operating conditions. The critical failure alarm will become de-energized if the relay self test algorithms detect a failure that would prevent the relay from properly protecting the transmission line.

b) LOCAL USER INTERFACE

The local user interface (on the faceplate) consists of a 2  20 liquid crystal display (LCD) and keypad. The keypad and display may be used to view data from the relay, to change settings in the relay, or to perform control actions. Also, the faceplate provides LED indications of status and events.

c) TIME SYNCHRONIZATION

The relay includes a clock which can run freely from the internal oscillator or be synchronized from an external IRIG-B signal. With the external signal, all relays wired to the same synchronizing signal will be synchronized to within 0.1 millisecond.

d) FUNCTION DIAGRAMS

Figure 2–3: L90 BLOCK DIAGRAM

GE Multilin L90 Line Current Differential System 2-19

2.4 SPECIFICATIONS 2 PRODUCT DESCRIPTION

NOTE

2.4SPECIFICATIONS 2.4.1 PROTECTION ELEMENTS

The operating times include the activation time of a trip rated form-A output contact unless otherwise indicated. FlexLogic operands of a given element are 4 ms faster. Take this into account when using FlexLogic to interconnect with other protection or control elements of the relay, building FlexLogic equations, or interfacing with other IEDs or power system devices via communications or different output contacts. In addition, operate times are given here for a 60 Hz system at nominal system frequency. Operate times for a 50 Hz system are 1.2 times longer.

PHASE DISTANCE

Characteristic: mho (memory polarized or offset) or

quad (memory polarized or non-direc-

tional), selectable individually per zone Number of zones: 5 Directionality: forward, reverse, or non-directional Reach (secondary ): 0.02 to 500.00  in steps of 0.01 Reach accuracy: ±5% including the effect of CVT tran-

Distance:

Characteristic angle: 30 to 90° in steps of 1 Comparator limit angle: 30 to 90° in steps of 1

Directional supervision:

Characteristic angle: 30 to 90° in steps of 1 Limit angle: 30 to 90° in steps of 1

Right blinder (Quad only):

Reach: 0.02 to 500  in steps of 0.01 Characteristic angle: 60 to 90° in steps of 1

Left Blinder (Quad only):

Reach: 0.02 to 500  in steps of 0.01

Characteristic angle: 60 to 90° in steps of 1 Time delay: 0.000 to 65.535 s in steps of 0.001 Timer accuracy: ±3% of operate time or ±1/4 cycle

Current supervision:

Level: line-to-line current

Pickup: 0.050 to 30.000 pu in steps of 0.001

Dropout: 97 to 98% Memory duration: 5 to 25 cycles in steps of 1 VT location: all delta-wye and wye-delta transformers CT location: all delta-wye and wye-delta transformers Voltage supervision pickup (series compensation applications):

Operation time: 1 to 1.5 cycles (typical) Reset time: 1 power cycle (typical)

sients up to an SIR of 30

(whichever is greater)

0 to 5.000 pu in steps of 0.001

GROUND DISTANCE

Characteristic: Mho (memory polarized or offset) or

Quad (memory polarized or non-directional)

Reactance polarization: negative-sequence or zero-sequence

current Non-homogeneity angle: –40 to 40° in steps of 1 Number of zones: 5 Directionality: forward, reverse, or non-directional Reach (secondary ): 0.02 to 500.00  in steps of 0.01 Reach accuracy: ±5% including the effect of CVT tran-

sients up to an SIR of 30 Distance characteristic angle: 30 to 90° in steps of 1 Distance comparator limit angle: 30 to 90° in steps of 1 Directional supervision:

Characteristic angle: 30 to 90° in steps of 1 Limit angle: 30 to 90° in steps of 1

Zero-sequence compensation

Z0/Z1 magnitude: 0.00 to 10.00 in steps of 0.01 Z0/Z1 angle: –90 to 90° in steps of 1

Zero-sequence mutual compensation

Z0M/Z1 magnitude: 0.00 to 7.00 in steps of 0.01 Z0M/Z1 angle: –90 to 90° in steps of 1

Right blinder (Quad only):

Reach: 0.02 to 500  in steps of 0.01 Characteristic angle: 60 to 90° in steps of 1

Left blinder (Quad only):

Reach: 0.02 to 500  in steps of 0.01

Characteristic angle: 60 to 90° in steps of 1 Time delay: 0.000 to 65.535 s in steps of 0.001 Timer accuracy: ±3% of operate time or ±1/4 cycle

(whichever is greater)

Current supervision:

Level: neutral current (3I_0)

Pickup: 0.050 to 30.000 pu in steps of 0.001

Dropout: 97 to 98% Memory duration: 5 to 25 cycles in steps of 1 Voltage supervision pickup (series compensation applications):

0 to 5.000 pu in steps of 0.001 Operation time: 1 to 1.5 cycles (typical) Reset time: 1 power cycle (typical)

LINE PICKUP

Phase instantaneous overcurrent: 0.000 to 30.000 pu Undervoltage pickup: 0.000 to 3.000 pu Overvoltage delay: 0.000 to 65.535 s

2-20 L90 Line Current Differential System GE Multilin

2 PRODUCT DESCRIPTION 2.4 SPECIFICATIONS

LINE CURRENT DIFFERENTIAL (87L)

Application: 2 or 3 terminal line, series compensated

line, tapped line, with charging current

compensation Pickup current level: 0.20 to 4.00 pu in steps of 0.01 CT Tap (CT mismatch factor): 0.20 to 5.00 in steps of 0.01 Slope # 1: 1 to 50% Slope # 2: 1 to 70% Breakpoint between slopes: 0.0 to 20.0 pu in steps of 0.1 Zero-sequence current differential (87LG):

87LG pickup level: 0.05 to 1.00 pu in steps of 0.01 87LG slope: 1 to 50% 87LG pickup delay: 0.00 to 5.00 s in steps of 0.01

DTT: Direct Transfer Trip (1 and 3 pole) to

remote L90 Operating Time: 1.0 to 1.5 power cycles duration Asymmetrical channel delay compensation using GPS:

asymmetry up to 10 ms In-zone transformer group compensation: 0 to 330° in steps of

Inrush inhibit mode:per-phase, 2-out-of-3, average

30°Inrush inhibit level:1.0 to 40.0%f

steps of 0.1

LINE CUR-

RENT DIFFERENTIAL TRIP LOGIC

87L trip: Adds security for trip decision; creates 1

and 3 pole trip logic DTT: Engaged Direct Transfer Trip (1 and 3

DD: Sensitive Disturbance Detector to detect

Stub bus protection: Security for ring bus and 1½ breaker

Open pole detector: Security for sequential and evolving

pole) from remote L90

fault occurrence

configurations

faults

RESTRICTED GROUND FAULT

Pickup: 0.005 to 30.000 pu in steps of 0.001 Dropout: 97 to 98% of pickup Slope: 0 to 100% in steps of 1% Pickup delay: 0 to 600.00 s in steps of 0.01 Dropout delay: 0 to 600.00 s in steps of 0.01 Operate time: <1 power system cycle

PHASE/NEUTRAL/GROUND TOC

Current: Phasor or RMS Pickup level: 0.000 to 30.000 pu in steps of 0.001 Dropout level: 97% to 98% of pickup Level accuracy:

for 0.1 to 2.0  CT: ±0.5% of reading or ±0.4% of rated

(whichever is greater)

for > 2.0  CT: ±1.5% of reading > 2.0  CT rating

Curve shapes: IEEE Moderately/Very/Extremely

Curve multiplier: Time Dial = 0.00 to 600.00 in steps of

Reset type: Instantaneous/Timed (per IEEE) Curve timing accuracy at 1.03 to 20 x pickup: ±3.5% of operate time or ±½ cycle

Inverse; IEC (and BS) A/B/C and Short Inverse; GE IAC Inverse, Short/Very/ Extremely Inverse; I (programmable); Definite Time (0.01 s base curve)

0.01

(whichever is greater) from pickup to operate

t; FlexCurves™

PHASE/NEUTRAL/GROUND IOC

Pickup level: 0.000 to 30.000 pu in steps of 0.001 Dropout level: 97 to 98% of pickup Level accuracy:

0.1 to 2.0  CT rating: ±0.5% of reading or ±0.4% of rated

> 2.0  CT rating ±1.5% of reading

Overreach: <2% Pickup delay: 0.00 to 600.00 s in steps of 0.01 Reset delay: 0.00 to 600.00 s in steps of 0.01 Operate time: <16 ms at 3  pickup at 60 Hz

Timer accuracy: ±3% of operate time or ±1/4 cycle

(whichever is greater)

(Phase/Ground IOC) <20 ms at 3  pickup at 60 Hz (Neutral IOC)

(whichever is greater)

GE Multilin L90 Line Current Differential System 2-21

2.4 SPECIFICATIONS 2 PRODUCT DESCRIPTION

NEGATIVE SEQUENCE TOC

Current: Phasor Pickup level: 0.000 to 30.000 pu in steps of 0.001 Dropout level: 97% to 98% of pickup Level accuracy: ±0.5% of reading or ±0.4% of rated

(whichever is greater) from 0.1 to 2.0 x CT rating

Curve shapes: IEEE Moderately/Very/Extremely

Curve multiplier (Time dial): 0.00 to 600.00 in steps of 0.01 Reset type: Instantaneous/Timed (per IEEE) and Lin-

Curve timing accuracy at 1.03 to 20 x pickup: ±3.5% of operate time or ±½ cycle

±1.5% of reading > 2.0 x CT rating

Inverse; IEC (and BS) A/B/C and Short Inverse; GE IAC Inverse, Short/Very/ Extremely Inverse; I (programmable); Definite Time (0.01 s base curve)

ear

(whichever is greater) from pickup to operate

t; FlexCurves™

NEGATIVE SEQUENCE IOC

Current: Phasor Pickup level: 0.000 to 30.000 pu in steps of 0.001 Dropout level: 97 to 98% of pickup Level accuracy: 0.1 to 2.0  CT rating: ±0.5% of reading

or ±0.4% of rated (whichever is greater); 2.0  CT rating: ±1.5% of reading

Overreach: 2% Pickup delay: 0.00 to 600.00 s in steps of 0.01 Reset delay: 0.00 to 600.00 s in steps of 0.01 Operate time: <20 ms at 3  pickup at 60 Hz Timer accuracy: ±3% of operate time or ±1/4 cycle

(whichever is greater)

PHASE DIRECTIONAL OVERCURRENT

Relay connection: 90° (quadrature) Quadrature voltage: ABC phase seq.: phase A (V

B (V

), phase C (VAB); ACB phase

seq.: phase A (V

phase C (V Polarizing voltage threshold: 0.000 to 3.000 pu in steps of 0.001 Current sensitivity threshold: 0.05 pu Characteristic angle: 0 to 359 Angle accuracy: ±2° Operation time (FlexLogic operands):

° in steps of 1

Tripping (reverse load, forward fault):

12 ms, typically

Blocking (forward load, reverse fault):

8 ms, typically

)

), phase B (VAC),

), phase

NEUTRAL DIRECTIONAL OVERCURRENT

Directionality: Co-existing forward and reverse Polarizing: Voltage, Current, Dual Polarizing voltage: V_0 or VX Polarizing current: IG Operating current: I_0 Level sensing: 3  (|I_0| – K  |I_1|), IG Restraint, K: 0.000 to 0.500 in steps of 0.001 Characteristic angle: –90 to 90° in steps of 1 Limit angle: 40 to 90° in steps of 1, independent for

forward and reverse

Angle accuracy: ±2° Offset impedance: 0.00 to 250.00  in steps of 0.01 Pickup level: 0.002 to 30.000 pu in steps of 0.01 Dropout level: 97 to 98% Operation time: <16 ms at 3  pickup at 60 Hz

NEGATIVE SEQUENCE DIRECTIONAL OC

Directionality: Co-existing forward and reverse Polarizing: Voltage Polarizing voltage: V_2 Operating current: I_2 Level sensing:

Zero-sequence:|I_0| – K  |I_1| Negative-sequence:|I_2| – K  |I_1|

Restraint, K: 0.000 to 0.500 in steps of 0.001 Characteristic angle: 0 to 90° in steps of 1 Limit angle: 40 to 90° in steps of 1, independent for

forward and reverse

Angle accuracy: ±2° Offset impedance: 0.00 to 250.00  in steps of 0.01 Pickup level: 0.015 to 30.000 pu in steps of 0.01 Dropout level: 97 to 98% Operation time: <16 ms at 3  pickup at 60 Hz

WATTMETRIC ZERO-SEQUENCE DIRECTIONAL

Measured power: zero-sequence Number of elements: 2 Characteristic angle: 0 to 360° in steps of 1 Minimum power: 0.001 to 1.200 pu in steps of 0.001 Pickup level accuracy: ±1% or ±0.0025 pu, whichever is greater Hysteresis: 3% or 0.001 pu, whichever is greater Pickup delay: definite time (0 to 600.00 s in steps of

0.01), inverse time, or FlexCurve Inverse time multiplier: 0.01 to 2.00 s in steps of 0.01 Curve timing accuracy: ±3.5% of operate time or ±1 cycle

(whichever is greater) from pickup to operate

Operate time: <30 ms at 60 Hz

2-22 L90 Line Current Differential System GE Multilin

2 PRODUCT DESCRIPTION 2.4 SPECIFICATIONS

SENSITIVE DIRECTIONAL POWER

Measured power: 3-phase, true RMS Number of stages: 2 Characteristic angle: 0 to 359° in steps of 1 Calibration angle: 0.00 to 0.95° in steps of 0.05 Minimum power: –1.200 to 1.200 pu in steps of 0.001 Pickup level accuracy: ±1% or ±0.001 pu, whichever is greater Hysteresis: 2% or 0.001 pu, whichever is greater Pickup delay: 0 to 600.00 s in steps of 0.01 Timer accuracy: ±3% of operate time or ±1/4 cycle

(whichever is greater)

Operate time: <50 ms

PHASE UNDERVOLTAGE

Voltage: Phasor only Pickup level: 0.000 to 3.000 pu in steps of 0.001 Dropout level: 102 to 103% of pickup Level accuracy: ±0.5% of reading from 10 to 208 V Curve shapes: GE IAV Inverse;

Definite Time (0.1s base curve)

Curve multiplier: Time dial = 0.00 to 600.00 in steps of

0.01 Curve timing accuracy at <0.90 x pickup: ±3.5% of operate time or ±1/2 cycle

(whichever is greater) from pickup to operate

AUXILIARY UNDERVOLTAGE

Pickup level: 0.000 to 3.000 pu in steps of 0.001 Dropout level: 102 to 103% of pickup Level accuracy: ±0.5% of reading from 10 to 208 V Curve shapes: GE IAV Inverse, Definite Time Curve multiplier: Time Dial = 0 to 600.00 in steps of 0.01 Curve timing accuracy at <0.90 x pickup: ±3.5% of operate time or ±1/2 cycle

(whichever is greater) from pickup to operate

PHASE OVERVOLTAGE

Voltage: Phasor only Pickup level: 0.000 to 3.000 pu in steps of 0.001 Dropout level: 97 to 98% of pickup Level accuracy: ±0.5% of reading from 10 to 208 V Pickup delay: 0.00 to 600.00 in steps of 0.01 s Operate time: 30 ms at 1.10  pickup at 60 Hz Timer accuracy: ±3% of operate time or ±1/4 cycle

(whichever is greater)

NEUTRAL OVERVOLTAGE

Pickup level: 0.000 to 3.000 pu in steps of 0.001 Dropout level: 97 to 98% of pickup Level accuracy: ±0.5% of reading from 10 to 208 V Pickup delay: 0.00 to 600.00 s in steps of 0.01 (definite

time) or user-defined curve Reset delay: 0.00 to 600.00 s in steps of 0.01 Curve timing accuracy at >1.1 x pickup: ±3.5% of operate time or ±1 cycle

(whichever is greater) from pickup to

operate Operate time: 30 ms at 1.10  pickup at 60 Hz

AUXILIARY OVERVOLTAGE

Pickup level: 0.000 to 3.000 pu in steps of 0.001 Dropout level: 97 to 98% of pickup Level accuracy: ±0.5% of reading from 10 to 208 V Pickup delay: 0 to 600.00 s in steps of 0.01 Reset delay: 0 to 600.00 s in steps of 0.01 Timer accuracy: ±3% of operate time or ±1/4 cycle

(whichever is greater) Operate time: 30 ms at 1.10  pickup at 60 Hz

UNDERFREQUENCY

Minimum signal: 0.10 to 1.25 pu in steps of 0.01 Pickup level: 20.00 to 65.00 Hz in steps of 0.01 Dropout level: pickup + 0.03 Hz Level accuracy: ±0.001 Hz Time delay: 0 to 65.535 s in steps of 0.001 Timer accuracy: ±3% of operate time or ±1/4 cycle

(whichever is greater) Operate time: typically 4 cycles at 0.1 Hz/s change

typically 3.5 cycles at 0.3 Hz/s change

typically 3 cycles at 0.5 Hz/s change Typical times are average operate times including variables such

as frequency change instance, test method, etc., and may vary by ±0.5 cycles.

OVERFREQUENCY

Pickup level: 20.00 to 65.00 Hz in steps of 0.01 Dropout level: pickup – 0.03 Hz Level accuracy: ±0.001 Hz Time delay: 0 to 65.535 s in steps of 0.001 Timer accuracy: ±3% of operate time or ±1/4 cycle

(whichever is greater) Operate time: typically 4 cycles at 0.1 Hz/s change

typically 3.5 cycles at 0.3 Hz/s change

typically 3 cycles at 0.5 Hz/s change Typical times are average operate times including variables such

as frequency change instance, test method, etc., and may vary by ±0.5 cycles.

GE Multilin L90 Line Current Differential System 2-23

2.4 SPECIFICATIONS 2 PRODUCT DESCRIPTION

RATE OF CHANGE OF FREQUENCY

df/dt trend: increasing, decreasing, bi-directional df/dt pickup level: 0.10 to 15.00 Hz/s in steps of 0.01 df/dt dropout level: 96% of pickup df/dt level accuracy: 80 mHz/s or 3.5%, whichever is greater Overvoltage supv.: 0.100 to 3.000 pu in steps of 0.001 Overcurrent supv.: 0.000 to 30.000 pu in steps of 0.001 Pickup delay: 0 to 65.535 s in steps of 0.001

Reset delay: 0 to 65.535 s in steps of 0.001 Timer accuracy: ±3% of operate time or ±1/4 cycle

(whichever is greater)

95% settling time for df/dt: <24 cycles Operate time: typically 6.5 cycles at 2  pickup

typically 5.5 cycles at 3  pickup typically 4.5 cycles at 5  pickup

BREAKER FAILURE

Mode: 1-pole, 3-pole Current supervision: phase, neutral current Current supv. pickup: 0.001 to 30.000 pu in steps of 0.001 Current supv. dropout: 97 to 98% of pickup Current supv. accuracy:

0.1 to 2.0  CT rating: ±0.75% of reading or ±2% of rated

(whichever is greater)

above 2  CT rating: ±2.5% of reading

BREAKER ARCING CURRENT

Principle: accumulates breaker duty (I2t) and mea-

Initiation: programmable per phase from any Flex-

Compensation for auxiliary relays: 0 to 65.535 s in steps of 0.001 Alarm threshold: 0 to 50000 kA2-cycle in steps of 1 Fault duration accuracy: 0.25 of a power cycle Availability: 1 per CT bank with a minimum of 2

sures fault duration

Logic operand

BREAKER FLASHOVER

Operating quantity: phase current, voltage and voltage differ-

ence Pickup level voltage: 0 to 1.500 pu in steps of 0.001 Dropout level voltage: 97 to 98% of pickup Pickup level current: 0 to 1.500 pu in steps of 0.001 Dropout level current: 97 to 98% of pickup Level accuracy: ±0.5% or ±0.1% of rated, whichever is

greater Pickup delay: 0 to 65.535 s in steps of 0.001 Timer accuracy: ±3% of operate time or ±42 ms, which-

Operate time: <42 ms at 1.10  pickup at 60 Hz

ever is greater

BREAKER RESTRIKE

Principle: detection of high-frequency overcurrent

condition ¼ cycle after breaker opens

Availability: one per CT/VT module (not including 8Z

Pickup level: 0.1 to 2.00 pu in steps of 0.01 Reset delay: 0.000 to 65.535 s in steps of 0.001

modules)

SYNCHROCHECK

Max voltage difference: 0 to 400000 V in steps of 1 Max angle difference: 0 to 100 Max freq. difference: 0.00 to 2.00 Hz in steps of 0.01 Hysteresis for max. freq. diff.: 0.00 to 0.10 Hz in steps of 0.01 Dead source function: None, LV1 & DV2, DV1 & LV2, DV1 or

° in steps of 1

DV2, DV1 xor DV2, DV1 & DV2 (L = Live, D = Dead)

AUTORECLOSURE

Two breakers applications Single- and three-pole tripping schemes Up to 4 reclose attempts before lockout Selectable reclosing mode and breaker sequence

PILOT-AIDED SCHEMES

Direct Underreaching Transfer Trip (DUTT) Permissive Underreaching Transfer Trip (PUTT) Permissive Overreaching Transfer Trip (POTT) Hybrid POTT Scheme Directional Comparison Blocking Scheme Directional Comparison Unblocking Scheme (DCUB)

TRIP OUTPUT

Collects trip and reclose input requests and issues outputs to con-

trol tripping and reclosing. Communications timer delay: 0 to 65535 s in steps of 0.001 Evolving fault timer: 0.000 to 65.535 s in steps of 0.001 Timer accuracy: ±3% of operate time or ±1/4 cycle

(whichever is greater)

POWER SWING DETECT

Functions: Power swing block, Out-of-step trip Characteristic: Mho or Quad Measured impedance: Positive-sequence Blocking / tripping modes: 2-step or 3-step Tripping mode: Early or Delayed Current supervision:

Pickup level: 0.050 to 30.000 pu in steps of 0.001 Dropout level: 97 to 98% of pickup

Fwd / reverse reach (sec. ): 0.10 to 500.00  in steps of 0.01 Left and right blinders (sec. ): 0.10 to 500.00  in steps of 0.01 Impedance accuracy: ±5% Fwd / reverse angle impedances: 40 to 90° in steps of 1 Angle accuracy: ±2° Characteristic limit angles: 40 to 140° in steps of 1 Timers: 0.000 to 65.535 s in steps of 0.001 Timer accuracy: ±3% of operate time or ±1/4 cycle

(whichever is greater)

2-24 L90 Line Current Differential System GE Multilin

2 PRODUCT DESCRIPTION 2.4 SPECIFICATIONS

LOAD ENCROACHMENT

Responds to: Positive-sequence quantities Minimum voltage: 0.000 to 3.000 pu in steps of 0.001 Reach (sec. ): 0.02 to 250.00  in steps of 0.01 Impedance accuracy: ±5% Angle: 5 to 50° in steps of 1 Angle accuracy: ±2° Pickup delay: 0 to 65.535 s in steps of 0.001 Reset delay: 0 to 65.535 s in steps of 0.001 Timer accuracy: ±3% of operate time or ±1/4 cycle

(whichever is greater)

Operate time: <30 ms at 60 Hz

OPEN POLE DETECTOR

Functionality: Detects an open pole condition, monitor-

ing breaker auxiliary contacts, the current in each phase and optional voltages

on the line Current pickup level: 0.000 to 30.000 pu in steps of 0.001 Line capacitive reactances (X

Remote current pickup level: 0.000 to 30.000 pu in steps of 0.001 Current dropout level: pickup + 3%, not less than 0.05 pu

, XC0): 300.0 to 9999.9 sec.  in

steps of 0.1

FLEXLOGIC

Programming language: Reverse Polish Notation with graphical

Lines of code: 512 Internal variables: 64 Supported operations: NOT, XOR, OR (2 to 16 inputs), AND (2

Inputs: any logical variable, contact, or virtual

Number of timers: 32 Pickup delay: 0 to 60000 (ms, sec., min.) in steps of 1 Dropout delay: 0 to 60000 (ms, sec., min.) in steps of 1

visualization (keypad programmable)

to 16 inputs), NOR (2 to 16 inputs),

NAND (2 to 16 inputs), latch (reset-domi-

nant), edge detectors, timers

input

FLEXCURVES™

Number: 4 (A through D) Reset points: 40 (0 through 1 of pickup) Operate points: 80 (1 through 20 of pickup) Time delay: 0 to 65535 ms in steps of 1

FLEX STATES

Number: up to 256 logical variables grouped

Programmability: any logical variable, contact, or virtual

under 16 Modbus addresses

input

THERMAL OVERLOAD PROTECTION

Thermal overload curves: IEC 255-8 curve Base current: 0.20 to 3.00 pu in steps of 0.01 Overload (k) factor: 1.00 to 1.20 pu in steps of 0.05 Trip time constant: 0 to 1000 min. in steps of 1 Reset time constant: 0 to 1000 min. in steps of 1 Minimum reset time: 0 to 1000 min. in steps of 1 Timer accuracy (cold curve): ±100 ms or 2%, whichever is greater Timer accuracy (hot curve): ±500 ms or 2%, whichever is greater

< 0.9 × k × Ib and I / (k × Ib) > 1.1

for I

TRIP BUS (TRIP WITHOUT FLEXLOGIC)

Number of elements: 6 Number of inputs: 16 Operate time: <2 ms at 60 Hz Timer accuracy: ±3% or 10 ms, whichever is greater

2.4.2 USER-PROGRAMMABLE ELEMENTS

FLEXELEMENTS™

Number of elements: 8 Operating signal: any analog actual value, or two values in

Operating signal mode: signed or absolute value Operating mode: level, delta Comparator direction: over, under Pickup Level: –90.000 to 90.000 pu in steps of 0.001 Hysteresis: 0.1 to 50.0% in steps of 0.1 Delta dt: 20 ms to 60 days Pickup & dropout delay: 0.000 to 65.535 s in steps of 0.001

differential mode

NON-VOLATILE LATCHES

Type: set-dominant or reset-dominant Number: 16 (individually programmed) Output: stored in non-volatile memory Execution sequence: as input prior to protection, control, and

FlexLogic

USER-PROGRAMMABLE LEDs

Number: 48 plus trip and alarm Programmability: from any logical variable, contact, or vir-

Reset mode: self-reset or latched

tual input

LED TEST

Initiation: from any digital input or user-program-

Number of tests: 3, interruptible at any time Duration of full test: approximately 3 minutes Test sequence 1: all LEDs on Test sequence 2: all LEDs off, one LED at a time on for 1 s Test sequence 3: all LEDs on, one LED at a time off for 1 s

mable condition

GE Multilin L90 Line Current Differential System 2-25

2.4 SPECIFICATIONS 2 PRODUCT DESCRIPTION

USER-DEFINABLE DISPLAYS

Number of displays: 16 Lines of display: 2  20 alphanumeric characters Parameters: up to 5, any Modbus register addresses Invoking and scrolling: keypad, or any user-programmable con-

dition, including pushbuttons

CONTROL PUSHBUTTONS

Number of pushbuttons: 7

Operation: drive FlexLogic operands

USER-PROGRAMMABLE PUSHBUTTONS (OPTIONAL)

Number of pushbuttons: 12 (standard faceplate);

16 (enhanced faceplate) Mode: self-reset, latched Display message: 2 lines of 20 characters each Drop-out timer: 0.00 to 60.00 s in steps of 0.05 Autoreset timer: 0.2 to 600.0 s in steps of 0.1 Hold timer: 0.0 to 10.0 s in steps of 0.1

OSCILLOGRAPHY

Maximum records: 64 Sampling rate: 64 samples per power cycle Triggers: any element pickup, dropout, or operate;

digital input change of state; digital out-

put change of state; FlexLogic equation Data: AC input channels; element state; digital

input state; digital output state Data storage: in non-volatile memory

EVENT RECORDER

Capacity: 1024 events Time-tag: to 1 microsecond Triggers: any element pickup, dropout, or operate;

digital input change of state; digital out-

put change of state; self-test events Data storage: in non-volatile memory

DATA LOGGER

Number of channels: 1 to 16 Parameters: any available analog actual value Sampling rate: 15 to 3600000 ms in steps of 1 Trigger: any FlexLogic operand Mode: continuous or triggered Storage capacity: (NN is dependent on memory)

1-second rate:

01 channel for NN days

16 channels for NN days



60-minute rate:

01 channel for NN days 16 channels for NN days

SELECTOR SWITCH

Number of elements: 2 Upper position limit: 1 to 7 in steps of 1 Selecting mode: time-out or acknowledge Time-out timer: 3.0 to 60.0 s in steps of 0.1 Control inputs: step-up and 3-bit Power-up mode: restore from non-volatile memory or syn-

chronize to a 3-bit control input or synch/ restore mode

DIGITAL ELEMENTS

Number of elements: 48 Operating signal: any FlexLogic operand Pickup delay: 0.000 to 999999.999 s in steps of 0.001 Dropout delay: 0.000 to 999999.999 s in steps of 0.001 Timing accuracy: ±3% or ±4 ms, whichever is greater

2.4.3 MONITORING

FAULT LOCATOR

Method: multi-ended or single-ended during

channel failure

Voltage source: wye-connected VTs, delta-connected

Maximum accuracy if: fault resistance is zero or fault currents

Relay accuracy: ±1.5% (V > 10 V, I > 0.1 pu) Worst-case accuracy:

+ user data

%error

+ user data

%error

Line%error

METHOD

RELAY ACCURACY

+ user data

+ 0.5% (multi-ended method), see chapter

%error

VTs and neutral voltage, delta-connected VTs and zero-sequence current (approximation)

from all line terminals are in phase

8 (single-ended method)

+ (1.5%)

%error

2-26 L90 Line Current Differential System GE Multilin

2 PRODUCT DESCRIPTION 2.4 SPECIFICATIONS

PHASOR MEASUREMENT UNIT

Output format: per IEEE C37.118 or IEC 61850-90-5

standard

Number of channels: 14 synchrophasors, 8 analogs, 16 digi-

tals TVE (total vector error) <1% Triggering: frequency, voltage, current, power, rate

of change of frequency, user-defined Reporting rate: 1, 2, 5, 10, 12, 15, 20, 25, 30, 50, or 60

times per second for P and M class, and

100 or 120 times per second for P class

only Number of clients: One over TCP/IP port and one over

UDP/IP per aggregator AC ranges: As indicated in appropriate specifications

sections Network reporting format: 16-bit integer (for C37.118) or 32-bit

IEEE floating point numbers Network reporting style: rectangular (real and imaginary for

C37.188) or polar (magnitude and angle)

coordinates Post-filtering: none, 3-point, 5-point, 7-point Calibration: ±5° (angle) and ±5% (magnitude)

2.4.4 METERING

RMS CURRENT: PHASE, NEUTRAL, AND GROUND

Accuracy at

0.1 to 2.0  CT rating: ±0.25% of reading or ±0.1% of rated

(whichever is greater)

2.0  CT rating: ±1.0% of reading

RMS VOLTAGE

Accuracy: ±0.5% of reading from 10 to 208 V

REAL POWER (WATTS)

Accuracy at 0.1 to 1.5 x CT rating and 0.8 to

1.2 x VT rating: ±1.0% of reading at –1.0  PF< –0.8 and

0.8 < PF 10

REACTIVE POWER (VARS)

Accuracy at 0.1 to 1.5 x CT rating and 0.8 to

1.2 x VT rating: ±1.0% of reading at –0.2  PF  0.2

APPARENT POWER (VA)

Accuracy at 0.1 to 1.5 x CT rating and 0.8 to

1.2 x VT rating: ±1.0% of reading

WATT-HOURS (POSITIVE AND NEGATIVE)

Accuracy: ±2.0% of reading Range: ±0 to 1  10 Parameters: three-phase only Update rate: 50 ms

MWh

VAR-HOURS (POSITIVE AND NEGATIVE)

Accuracy: ±2.0% of reading Range: ±0 to 1  10 Parameters: three-phase only Update rate: 50 ms

Mvarh

FREQUENCY

Accuracy at

V = 0.8 to 1.2 pu: ±0.001 Hz (when voltage signal is used

I = 0.1 to 0.25 pu: ±0.05 Hz I > 0.25 pu: ±0.001 Hz (when current signal is used

for frequency measurement)

DEMAND

Measurements: Phases A, B, and C present and maxi-

Accuracy: ±2.0%

mum measured currents 3-Phase Power (P, Q, and S) present and maximum measured currents

GE Multilin L90 Line Current Differential System 2-27

2.4 SPECIFICATIONS 2 PRODUCT DESCRIPTION

2.4.5 INPUTS

AC CURRENT

CT rated primary: 1 to 50000 A CT rated secondary: 1 A or 5 A by connection Relay burden: < 0.2 VA at rated secondary Conversion range:

Standard CT: 0.02 to 46  CT rating RMS symmetrical Sensitive Ground CT module:

0.002 to 4.6  CT rating RMS symmetrical

Current withstand: 20 ms at 250 times rated

1 sec. at 100 times rated continuous 4xInom; URs equipped with 24 CT inputs have a maximum operating temp. of 50°C

Short circuit rating: 150000 RMS symmetrical amperes, 250

V maximum (primary current to external CT)

AC VOLTAGE

VT rated secondary: 50.0 to 240.0 V VT ratio: 1.00 to 24000.00 Relay burden: < 0.25 VA at 120 V Conversion range: 1 to 275 V Voltage withstand: continuous at 260 V to neutral

1 min./hr at 420 V to neutral

FREQUENCY

Nominal frequency setting:25 to 60 Hz Sampling frequency: 64 samples per power cycle Tracking frequency range:45 to 65 Hz

CONTACT INPUTS

Dry contacts: 1000  maximum Wet contacts: 300 V DC maximum Selectable thresholds: 17 V, 33 V, 84 V, 166 V Tolerance: ±10% Contacts per common return: 4 Recognition time: < 1 ms Debounce time: 0.0 to 16.0 ms in steps of 0.5 Continuous current draw:3 mA (when energized)

CONTACT INPUTS WITH AUTO-BURNISHING

Dry contacts: 1000  maximum Wet contacts: 300 V DC maximum Selectable thresholds: 17 V, 33 V, 84 V, 166 V Tolerance: ±10% Contacts per common return: 2 Recognition time: < 1 ms Debounce time: 0.0 to 16.0 ms in steps of 0.5 Continuous current draw:3 mA (when energized) Auto-burnish impulse current: 50 to 70 mA Duration of auto-burnish impulse: 25 to 50 ms

DCMA INPUTS

Current input (mA DC): 0 to –1, 0 to +1, –1 to +1, 0 to 5, 0 to 10,

0 to 20, 4 to 20 (programmable)

Input impedance: 379 ±10% Conversion range: –1 to + 20 mA DC Accuracy: ±0.2% of full scale Type: Passive

RTD INPUTS

Types (3-wire): 100 Platinum, 100 & 120 Nickel, 10

Copper

Sensing current: 5 mA Range: –50 to +250°C Accuracy: ±2°C Isolation: 36 V pk-pk

IRIG-B INPUT

Amplitude modulation: 1 to 10 V pk-pk DC shift: TTL–Compatible Input impedance: 50 k Isolation: 2 kV

REMOTE INPUTS (IEC 61850 GSSE/GOOSE)

Input points: 32, configured from 64 incoming bit pairs Remote devices: 16 Default states on loss of comms.: On, Off, Latest/Off, Latest/On Remote DPS inputs: 5

2-28 L90 Line Current Differential System GE Multilin

2 PRODUCT DESCRIPTION 2.4 SPECIFICATIONS

2.4.6 POWER SUPPLY

LOW RANGE

Nominal DC voltage: 24 to 48 V Minimum DC voltage: 20 V Maximum DC voltage: 60 V Voltage loss hold-up: 20 ms duration at nominal NOTE: Low range is DC only.

HIGH RANGE

Nominal DC voltage: 125 to 250 V Minimum DC voltage: 88 V Maximum DC voltage: 300 V Nominal AC voltage: 100 to 240 V at 50/60 Hz Minimum AC voltage: 88 V at 25 to 100 Hz Maximum AC voltage: 265 V at 25 to 100 Hz Voltage loss hold-up: 200 ms duration at nominal

FORM-A RELAY

Make and carry for 0.2 s: 30 A as per ANSI C37.90 Carry continuous: 6 A Break (DC inductive, L/R = 40 ms):

VOLTAGE CURRENT

24 V 1 A

48 V 0.5 A

125 V 0.3 A

250 V 0.2 A

Operate time: < 4 ms Contact material: silver alloy

LATCHING RELAY

Make and carry for 0.2 s: 30 A as per ANSI C37.90 Carry continuous: 6 A as per IEEE C37.90 Break (DC resistive as per IEC61810-1):

VOLTAGE CURRENT

24 V 6 A

48 V 1.6 A

125 V 0.4 A

250 V 0.2 A

Operate time: < 4 ms Contact material: silver alloy Control: separate operate and reset inputs Control mode: operate-dominant or reset-dominant

FORM-A VOLTAGE MONITOR

Applicable voltage: approx. 15 to 250 V DC Trickle current: approx. 1 to 2.5 mA

ALL RANGES

Volt withstand: 2  Highest Nominal Voltage for 10 ms Power consumption: typical = 15 to 20 W/VA

maximum = 50 W/VA contact factory for exact order code consumption

INTERNAL FUSE

RATINGS

Low range power supply: 8 A / 250 V High range power supply: 4 A / 250 V

INTERRUPTING CAPACITY

AC: 100 000 A RMS symmetrical DC: 10 000 A

2.4.7 OUTPUTS

FORM-A CURRENT MONITOR

Threshold current: approx. 80 to 100 mA

FORM-C AND CRITICAL FAILURE RELAY

Make and carry for 0.2 s: 30 A as per ANSI C37.90 Carry continuous: 8 A Break (DC inductive, L/R = 40 ms):

VOLTAGE CURRENT

24 V 1 A

48 V 0.5 A

125 V 0.3 A

250 V 0.2 A

Operate time: < 8 ms Contact material: silver alloy

FAST FORM-C RELAY

Make and carry: 0.1 A max. (resistive load) Minimum load impedance:

INPUT

VOLTAGE

250 V DC 20 K 50 K 120 V DC 5 K 2 K

48 V DC 2 K 2 K 24 V DC 2 K 2 K

Note: values for 24 V and 48 V are the same due to a required 95% voltage drop across the load impedance.

Operate time: < 0.6 ms Internal Limiting Resistor: 100 , 2 W

2 W RESISTOR 1 W RESISTOR

IMPEDANCE

GE Multilin L90 Line Current Differential System 2-29

2.4 SPECIFICATIONS 2 PRODUCT DESCRIPTION

SOLID-STATE OUTPUT RELAY

Operate and release time: <100 s Maximum voltage: 265 V DC Maximum continuous current: 5 A at 45°C; 4 A at 65°C Make and carry:

for 0.2 s: 30 A as per ANSI C37.90 for 0.03 s 300 A

Breaking capacity:

Operations/ interval

Break capability (0 to 250 V DC)

UL508 Utility

5000 ops /

1s-On, 9s-Off

1000 ops /

0.5 s-On, 0.5 s-Off

3.2 A

L/R = 10 ms

1.6 A

L/R = 20 ms

0.8 A

L/R = 40 ms

application

(autoreclose

scheme)

5ops/

0.2 s-On,

0.2 s-Off within 1

minute

10 A

L/R = 40 ms

RS232

Front port: 19.2 kbps, Modbus RTU

RS485

1 rear port: Up to 115 kbps, Modbus RTU, isolated

Typical distance: 1200 m Isolation: 2 kV

together at 36 Vpk

ETHERNET (FIBER)

PARAMETER FIBER TYPE

100MB MULTI-

MODE

Wavelength 1310 nm

Connector LC

Transmit power –20 dBm

Receiver sensitivity –30 dBm

Power budget 10 dB

Maximum input power

Typical distance 2 km

Duplex full/half

Redundancy yes

–14 dBm

Industrial

application

10000 ops /

0.2 s-On, 30 s-Off

10 A

L/R = 40 ms

CONTROL POWER EXTERNAL OUTPUT (FOR DRY CONTACT INPUT)

Capacity: 100 mA DC at 48 V DC Isolation: ±300 Vpk

REMOTE OUTPUTS (IEC 61850 GSSE/GOOSE)

Standard output points: 32 User output points: 32

DCMA OUTPUTS

Range: –1 to 1 mA, 0 to 1 mA, 4 to 20 mA Max. load resistance: 12 k for –1 to 1 mA range

12 k for 0 to 1 mA range 600  for 4 to 20 mA range

Accuracy: ±0.75% of full-scale for 0 to 1 mA range

±0.5% of full-scale for –1 to 1 mA range

±0.75% of full-scale for 0 to 20 mA range 99% Settling time to a step change: 100 ms Isolation: 1.5 kV Driving signal: any FlexAnalog quantity Upper and lower limit for the driving signal: –90 to 90 pu in steps of

0.001

2.4.8 COMMUNICATIONS

PRECISION TIME PROTOCOL (PTP)

PTP IEEE Std 1588 2008 (version 2) Power Profile (PP) per IEEE Standard PC37.238TM2011 Slave-only ordinary clock Peer delay measurement mechanism

PARALLEL REDUNDANCY PROTOCOL (PRP) (IEC 62439-3 CLAUSE 4, 2012)

Ethernet ports used: 2 and 3 Networks supported: 10/100 MB Ethernet

ETHERNET (10/100 MB TWISTED PAIR)

Modes: 10 MB, 10/100 MB (auto-detect) Connector: RJ45

SIMPLE NETWORK TIME PROTOCOL (SNTP)

clock synchronization error: <10 ms (typical)

2-30 L90 Line Current Differential System GE Multilin

2 PRODUCT DESCRIPTION 2.4 SPECIFICATIONS

NOTE

2.4.9 INTER-RELAY COMMUNICATIONS

SHIELDED TWISTED-PAIR INTERFACE OPTIONS

INTERFACE TYPE TYPICAL DISTANCE

RS422 1200 m

G.703 100 m

RS422 distance is based on transmitter power and does not take into consideration the clock source provided by the user.

LINK POWER BUDGET

EMITTER, FIBER TYPE

820 nm LED, Multimode

1300 nm LED, Multimode

1300 nm ELED, Singlemode

1300 nm Laser, Singlemode

1550 nm Laser, Singlemode

TRANSMIT

POWER

–20 dBm –30 dBm 10 dB

–21 dBm –30 dBm 9 dB

–23 dBm –32 dBm 9 dB

–1 dBm –30 dBm 29 dB

+5 dBm –30 dBm 35 dB

RECEIVED

SENSITIVITY

POWER

BUDGET

These power budgets are calculated from the manufacturer’s worst-case transmitter power and worst case receiver sensitivity.

The power budgets for the 1300 nm ELED are calculated from the manufacturer's transmitter power and receiver sensitivity at ambient temperature. At extreme temperatures these values deviate based on component tolerance. On average, the output power decreases as the temperature is increased by a factor 1dB / 5°C.

MAXIMUM OPTICAL INPUT POWER

EMITTER, FIBER TYPE MAX. OPTICAL

820 nm LED, Multimode –7.6 dBm

1300 nm LED, Multimode –11 dBm

1300 nm ELED, Singlemode –14 dBm

1300 nm Laser, Singlemode –14 dBm

1550 nm Laser, Singlemode –14 dBm

INPUT POWER

TYPICAL LINK DISTANCE

EMITTER TYPE CABLE

820 nm LED, multimode

1300 nm LED, multimode

1300 nm ELED, single mode

1300 nm Laser, single mode

1550 nm Laser, single-mode

TYPE

62.5/125 μmST 1.65 km

62.5/125 μm ST 3.8 km

9/125 μm ST 11.4 km

9/125 μm ST 64 km

9/125 μm ST 105 km

CONNECTOR

TYPE

TYPICAL

DISTANCE

Typical distances listed are based on the following assumptions for system loss. As actual losses vary from one installation to another, the distance covered by your system may vary.

CONNECTOR LOSSES (TOTAL OF BOTH ENDS)

ST connector 2 dB

FIBER LOSSES

820 nm multimode 3 dB/km 1300 nm multimode 1 dB/km 1300 nm singlemode 0.35 dB/km 1550 nm singlemode 0.25 dB/km Splice losses: One splice every 2 km,

at 0.05 dB loss per splice.

SYSTEM MARGIN

3 dB additional loss added to calculations to compensate for all other losses.

Compensated difference in transmitting and receiving (channel asymmetry) channel delays using GPS satellite clock: 10 ms

2.4.10 ENVIRONMENTAL

AMBIENT TEMPERATURES

Storage temperature: –40 to 85°C Operating temperature: –40 to 60°C; the LCD contrast can be

impaired at temperatures less than – 20°C

OTHER

Altitude: 2000 m (maximum) Pollution degree: II Overvoltage category: II Ingress protection: IP20 front, IP10 back

HUMIDITY

Humidity: operating up to 95% (non-condensing) at

55°C (as per IEC60068-2-30 variant 1, 6 days).

GE Multilin L90 Line Current Differential System 2-31

L90 TYPE TESTS

TEST REFERENCE STANDARD TEST LEVEL

Dielectric voltage withstand EN60255-5 2.2 kV

Impulse voltage withstand EN60255-5 5 kV

Damped oscillatory IEC61000-4-18 / IEC60255-22-1 2.5 kV CM, 1 kV DM

Electrostatic discharge EN61000-4-2 / IEC60255-22-2 Level 3

RF immunity EN61000-4-3 / IEC60255-22-3 Level 3

Fast transient disturbance EN61000-4-4 / IEC60255-22-4 Class A and B

Surge immunity EN61000-4-5 / IEC60255-22-5 Level 3 and 4

Conducted RF immunity EN61000-4-6 / IEC60255-22-6 Level 3

Power frequency immunity EN61000-4-7 / IEC60255-22-7 Class A and B

Voltage interruption and ripple DC IEC60255-11 12% ripple, 200 ms interrupts

Radiated and conducted emissions CISPR11 / CISPR22 / IEC60255-25 Class A

Sinusoidal vibration IEC60255-21-1 Class 1

Shock and bump IEC60255-21-2 Class 1

Seismic IEC60255-21-3 Class 1

Power magnetic immunity IEC61000-4-8 Level 5

Pulse magnetic immunity IEC61000-4-9 Level 4

Damped magnetic immunity IEC61000-4-10 Level 4

Voltage dip and interruption IEC61000-4-11 0, 40, 70, 80% dips; 250 / 300 cycle interrupts

Damped oscillatory IEC61000-4-12 2.5 kV CM, 1 kV DM

Conducted RF immunity, 0 to 150 kHz IEC61000-4-16 Level 4

Voltage ripple IEC61000-4-17 15% ripple

Ingress protection IEC60529 IP40 front, IP10 back

Cold IEC60068-2-1 –40°C for 16 hours

Hot IEC60068-2-2 85°C for 16 hours

Humidity IEC60068-2-30 6 days, variant 1

Damped oscillatory IEEE/ANSI C37.90.1 2.5 kV, 1 MHz

RF immunity IEEE/ANSI C37.90.2 20 V/m, 80 MHz to 1 GHz

Safety UL508 e83849 NKCR

Safety UL C22.2-14 e83849 NKCR7

Safety UL1053 e83849 NKCR

2.4 SPECIFICATIONS 2 PRODUCT DESCRIPTION

2.4.11 TYPE TESTS

2.4.12 PRODUCTION TESTS

THERMAL

Products go through an environmental test based upon an

Accepted Quality Level (AQL) sampling process.

2-32 L90 Line Current Differential System GE Multilin

2 PRODUCT DESCRIPTION 2.4 SPECIFICATIONS

2.4.13 APPROVALS

APPROVALS

COMPLIANCE APPLICABLE

CE Low voltage directive EN 60255-5

C-UL-US --- UL 508

COUNCIL DIRECTIVE

EMC directive EN 60255-26 / EN 50263

ACCORDING TO

EN 61000-6-5

UL 1053

C22.2 No. 14

2.4.14 MAINTENANCE

MOUNTING

Attach mounting brackets using 20 inch-pounds (±2 inch-pounds) of torque.

CLEANING

Normally, cleaning is not required; but for situations where dust has accumulated on the faceplate display, a dry cloth can be used.

To avoid deterioration of electrolytic capacitors, power up units that are stored in a de-energized state once per year, for one hour continuously.

GE Multilin L90 Line Current Differential System 2-33

2.4 SPECIFICATIONS 2 PRODUCT DESCRIPTION

2-34 L90 Line Current Differential System GE Multilin

3 HARDWARE 3.1 DESCRIPTION

17.56”

[446,02 mm]

9.687”

[246,05 mm]

11.016”

[279,81 mm]

7.460”

[189,48 mm]

6.960” [176,78 mm]

19.040”

[483,62 mm]

6.995”

[177,67 mm]

842807A1.CDR

3 HARDWARE 3.1DESCRIPTION 3.1.1 PANEL CUTOUT

a) HORIZONTAL UNITS

The L90 Line Current Differential System is available as a 19-inch rack horizontal mount unit with a removable faceplate. The faceplate can be specified as either standard or enhanced at the time of ordering. The enhanced faceplate contains additional user-programmable pushbuttons and LED indicators.

The modular design allows the relay to be easily upgraded or repaired by a qualified service person. The faceplate is hinged to allow easy access to the removable modules, and is itself removable to allow mounting on doors with limited rear depth.

The case dimensions are shown below, along with panel cutout details for panel mounting. When planning the location of your panel cutout, ensure that provision is made for the faceplate to swing open without interference to or from adjacent equipment.

The relay must be mounted such that the faceplate sits semi-flush with the panel or switchgear door, allowing the operator access to the keypad and the RS232 communications port. The relay is secured to the panel with the use of four screws supplied with the relay.

Figure 3–1: L90 HORIZONTAL DIMENSIONS (ENHANCED PANEL)

GE Multilin L90 Line Current Differential System 3-1

3.1 DESCRIPTION 3 HARDWARE

18.370”

[466,60 mm]

842808A1.CDR

0.280” [7,11 mm] Typ.x4

4.000”

[101,60 mm]

17.750”

[450,85 mm]

CUT-OUT

Figure 3–2: L90 HORIZONTAL MOUNTING (ENHANCED PANEL)

Figure 3–3: L90 HORIZONTAL MOUNTING AND DIMENSIONS (STANDARD PANEL)

b) VERTICAL UNITS

The L90 Line Current Differential System is available as a reduced size (¾) vertical mount unit, with a removable faceplate. The faceplate can be specified as either standard or enhanced at the time of ordering. The enhanced faceplate contains additional user-programmable pushbuttons and LED indicators.

3-2 L90 Line Current Differential System GE Multilin

3 HARDWARE 3.1 DESCRIPTION

14.025”

7.482”

15.000”

4.000”

9.780”

11.015”

1.329”

13.560”

843809A1.CDR

Figure 3–4: L90 VERTICAL DIMENSIONS (ENHANCED PANEL)

GE Multilin L90 Line Current Differential System 3-3

3.1 DESCRIPTION 3 HARDWARE

Figure 3–5: L90 VERTICAL MOUNTING AND DIMENSIONS (STANDARD PANEL)

For details on side mounting L90 devices with the enhanced front panel, refer to the following documents available online from the GE Multilin website.

• GEK-113180: UR-series UR-V side-mounting front panel assembly instructions.

• GEK-113181: Connecting the side-mounted UR-V enhanced front panel to a vertical UR-series device.

• GEK-113182: Connecting the side-mounted UR-V enhanced front panel to a vertically-mounted horizontal UR-series device.

For details on side mounting L90 devices with the standard front panel, refer to the figures below.

3-4 L90 Line Current Differential System GE Multilin

3 HARDWARE 3.1 DESCRIPTION

Figure 3–6: L90 VERTICAL SIDE MOUNTING INSTALLATION (STANDARD PANEL)

GE Multilin L90 Line Current Differential System 3-5

3.1 DESCRIPTION 3 HARDWARE

Figure 3–7: L90 VERTICAL SIDE MOUNTING REAR DIMENSIONS (STANDARD PANEL)

3.1.2 MODULE WITHDRAWAL AND INSERTION

Withdraw or insert a module only when control power has been removed from the unit, and be sure to inserting only the correct module type into a slot, else personal injury, damage to the unit or connected equipment, or undesired operation can result.

To avoid damage to the equipment, use proper electrostatic discharge protection (for example, a static strap) when coming in contact with modules while the relay is energized.

The relay, being modular in design, allows for the withdrawal and insertion of modules. Modules must only be replaced with like modules in their original factory configured slots.

The enhanced faceplate can be opened to the left, once the thumb screw has been removed, as shown below. This allows for easy accessibility of the modules for withdrawal. The new wide-angle hinge assembly in the enhanced front panel opens completely and allows easy access to all modules in the L90.

3-6 L90 Line Current Differential System GE Multilin

3 HARDWARE 3.1 DESCRIPTION

842812A1.CDR

NOTE

Figure 3–8: UR MODULE WITHDRAWAL AND INSERTION (ENHANCED FACEPLATE)

The standard faceplate can be opened to the left, once the sliding latch on the right side has been pushed up, as shown below. This allows for easy accessibility of the modules for withdrawal.

Figure 3–9: UR MODULE WITHDRAWAL AND INSERTION (STANDARD FACEPLATE)

To properly remove a module, the ejector/inserter clips, located at the top and bottom of each module, must be pulled simultaneously. Before performing this action, control power must be removed from the relay. Record the original loca- tion of the module to ensure that the same or replacement module is inserted into the correct slot. Modules with current input provide automatic shorting of external CT circuits.

To properly insert a module, ensure that the correct module type is inserted into the correct slot position. The ejector/ inserter clips located at the top and at the bottom of each module must be in the disengaged position as the module is smoothly inserted into the slot. Once the clips have cleared the raised edge of the chassis, engage the clips simultaneously. When the clips have locked into position, the module will be fully inserted.

CPU modules can be equipped with 100Base-T or 100Base-FX options. Disconnect these connectors from the module before removal of the module from the chassis.

The new CT/VT modules can only be used with new CPUs; similarly, old CT/VT modules can only be used with old CPUs. In the event that there is a mismatch between the CPU and CT/VT module, the relay does not function and

DSP ERROR or HARDWARE MISMATCH error displays.

GE Multilin L90 Line Current Differential System 3-7

3.1 DESCRIPTION 3 HARDWARE

3.1.3 REAR TERMINAL LAYOUT

Figure 3–10: REAR TERMINAL VIEW

Do not touch any rear terminals while the relay is energized.

The small form-factor pluggable ports (SFPs) are pluggable transceivers. Do not use non-validated transceivers or install validated transceivers in the wrong Ethernet slot, else damage can occur.

The relay follows a convention with respect to terminal number assignments which are three characters long assigned in order by module slot position, row number, and column letter. Two-slot wide modules take their slot designation from the first slot position (nearest to CPU module) which is indicated by an arrow marker on the terminal block. See the following figure for an example of rear terminal assignments.

Figure 3–11: EXAMPLE OF MODULES IN F AND H SLOTS

3-8 L90 Line Current Differential System GE Multilin

3 HARDWARE 3.2 WIRING

3.2WIRING 3.2.1 TYPICAL WIRING

Figure 3–12: TYPICAL WIRING DIAGRAM

GE Multilin L90 Line Current Differential System 3-9

3.2 WIRING 3 HARDWARE

The dielectric strength of the UR-series module hardware is shown in the following table:

Table 3–1: DIELECTRIC STRENGTH OF UR-SERIES MODULE HARDWARE

MODULE

TYPE

1 Power supply High (+); Low (+); (–) Chassis 2000 V AC for 1 minute

1 Power supply 48 V DC (+) and (–) Chassis 2000 V AC for 1 minute

1 Power supply Relay terminals Chassis 2000 V AC for 1 minute

2 Reserved N/A N/A N/A

3 Reserved N/A N/A N/A

4 Reserved N/A N/A N/A

5 Analog inputs/outputs All except 8b Chassis < 50 V DC

6 Digital inputs/outputs All Chassis 2000 V AC for 1 minute

8 CT/VT All Chassis 2000 V AC for 1 minute

9 CPU All Chassis 2000 V AC for 1 minute

MODULE FUNCTION TERMINALS DIELECTRIC STRENGTH

FROM TO

G.703 All except 2b, 3a, 7b, 8a Chassis 2000 V AC for 1 minute

RS422 All except 6a, 7b, 8a Chassis < 50 V DC

Filter networks and transient protection clamps are used in the hardware to prevent damage caused by high peak voltage transients, radio frequency interference (RFI), and electromagnetic interference (EMI). These protective components can be damaged by application of the ANSI/IEEE C37.90 specified test voltage for a period longer than the specified one minute.

3.2.2 DIELECTRIC STRENGTH

(AC)

3.2.3 CONTROL POWER

Control power supplied to the relay must be connected to the matching power supply range of the relay. If the voltage is applied to the wrong terminals, damage can occur.

The L90 relay, like almost all electronic relays, contains electrolytic capacitors. These capacitors are well known to be subject to deterioration over time if voltage is not applied periodically. Deterioration can be avoided by powering the relays up once a year.

The power supply module can be ordered for two possible voltage ranges, with or without a redundant power option. Each range has a dedicated input connection for proper operation. The ranges are as shown below (see the Technical specifica- tions section of chapter 2 for additional details):

• Low (LO) range: 24 to 48 V (DC only) nominal.

• High (HI) range: 125 to 250 V nominal.

The power supply module provides power to the relay and supplies power for dry contact input connections.

The power supply module provides 48 V DC power for dry contact input connections and a critical failure relay (see the Typical wiring diagram earlier). The critical failure relay is a form-C device that is energized once control power is applied and the relay has successfully booted up with no critical self-test failures. If on-going self-test diagnostic checks detect a critical failure (see the Self-test errors section in chapter 7) or control power is lost, the relay is de-energize.

For high reliability systems, the L90 has a redundant option in which two L90 power supplies are placed in parallel on the bus. If one of the power supplies become faulted, the second power supply assumes the full load of the relay without any interruptions. Each power supply has a green LED on the front of the module to indicate it is functional. The critical fail relay of the module also indicates a faulted power supply.

An LED on the front of the control power module shows the status of the power supply:

LED INDICATION POWER SUPPLY

CONTINUOUS ON OK

ON / OFF CYCLING Failure

OFF Failure

3-10 L90 Line Current Differential System GE Multilin

3 HARDWARE 3.2 WIRING

Figure 3–13: CONTROL POWER CONNECTION

3.2.4 CT/VT MODULES

A CT/VT module can have voltage inputs on channels 1 through 4 inclusive, or channels 5 through 8 inclusive. Channels 1 and 5 are intended for connection to phase A, and are labeled as such in the relay. Likewise, channels 2 and 6 are intended for connection to phase B, and channels 3 and 7 are intended for connection to phase C.

Channels 4 and 8 are intended for connection to a single-phase source. For voltage inputs, these channel are labelled as auxiliary voltage (VX). For current inputs, these channels are intended for connection to a CT between system neutral and ground, and are labelled as ground current (IG).

Verify that the connection made to the relay nominal current of 1 A or 5 A matches the secondary rating of the connected CTs. Unmatched CTs may result in equipment damage or inadequate protection.

CT/VT modules can be ordered with a standard ground current input that is the same as the phase current input. Each AC current input has an isolating transformer and an automatic shorting mechanism that shorts the input when the module is withdrawn from the chassis. There are no internal ground connections on the current inputs. Current transformers with 1 to 50000 A primaries and 1 A or 5 A secondaries may be used.

The above modules are available with enhanced diagnostics. These modules can automatically detect CT/VT hardware failure and take the relay out of service.

CT connections for both ABC and ACB phase rotations are identical as shown in the Typical wiring diagram.

The exact placement of a zero-sequence core balance CT to detect ground fault current is shown below. Twisted-pair cabling on the zero-sequence CT is recommended.

GE Multilin L90 Line Current Differential System 3-11

3.2 WIRING 3 HARDWARE

Current inputs

8F, 8G, 8L, and 8M modules (4 CTs and 4 VTs)

Voltage inputs

IA5

IC5

IB5

IG5

IA1

IC1

IB1

IG1

Current inputs

842766A3.CDR

IA5

IC5

IB5

IG5

IA1

IC1

IB1

IG1

8H, 8J, 8N, and 8R modules (8 CTs)

Figure 3–14: ZERO-SEQUENCE CORE BALANCE CT INSTALLATION

The phase voltage channels are used for most metering and protection purposes. The auxiliary voltage channel is used as input for the synchrocheck and volts-per-hertz features.

Substitute the tilde “~” symbol with the slot position of the module in the following figure.

Figure 3–15: CT/VT MODULE WIRING

3-12 L90 Line Current Differential System GE Multilin

3 HARDWARE 3.2 WIRING

3.2.5 PROCESS BUS MODULES

The L90 can be ordered with a process bus interface module. This module is designed to interface with the GE Multilin HardFiber system, allowing bidirectional IEC 61850 fiber optic communications with up to eight HardFiber merging units, known as Bricks. The HardFiber system has been designed to integrate seamlessly with the existing UR-series applications, including protection functions, FlexLogic, metering, and communications.

The IEC 61850 process bus system offers the following benefits:

• Reduces labor associated with design, installation, and testing of protection and control applications using the L90 by

reducing the number of individual copper terminations

• Integrates seamlessly with existing L90 applications, since the IEC 61850 process bus interface module replaces the

traditional CT/VT modules

• Communicates using open standard IEC 61850 messaging

For additional details on the HardFiber system, see GE publication GEK-113658: HardFiber Process Bus System Instruction Manual.

3.2.6 CONTACT INPUTS AND OUTPUTS

Every contact input/output module has 24 terminal connections. They are arranged as three terminals per row, with eight rows in total. A given row of three terminals can be used for the outputs of one relay. For example, for form-C relay outputs, the terminals connect to the normally open (NO), normally closed (NC), and common contacts of the relay. For a form-A output, there are options of using current or voltage detection for feature supervision, depending on the module ordered. The terminal configuration for contact inputs is different for the two applications.

The contact inputs are grouped with a common return. The L90 has two versions of grouping: four inputs per common return and two inputs per common return. When a contact input/output module is ordered, four inputs per common is used. The four inputs per common allows for high-density inputs in combination with outputs, with a compromise of four inputs sharing one common. If the inputs must be isolated per row, then two inputs per common return should be selected (4D module).

The tables and diagrams on the following pages illustrate the module types (6A, etc.) and contact arrangements that can be ordered for the relay. Since an entire row is used for a single contact output, the name is assigned using the module slot position and row number. However, since there are two contact inputs per row, these names are assigned by module slot position, row number, and column position.

Some form-A / solid-state relay outputs include circuits to monitor the DC voltage across the output contact when it is open, and the DC current through the output contact when it is closed. Each of the monitors contains a level detector whose output is set to logic “On = 1” when the current in the circuit is above the threshold setting. The voltage monitor is set to “On = 1” when the current is above about 1 to 2.5 mA, and the current monitor is set to “On = 1” when the current exceeds about 80 to 100 mA. The voltage monitor is intended to check the health of the overall trip circuit, and the current monitor can be used to seal-in the output contact until an external contact has interrupted current flow.

Block diagrams are shown as follows for form-A and solid-state relay outputs with optional voltage monitor, optional current monitor, and with no monitoring. The actual values shown for contact output 1 are the same for all contact outputs.

GE Multilin L90 Line Current Differential System 3-13

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3.2 WIRING 3 HARDWARE

Figure 3–16: FORM-A AND SOLID-STATE CONTACT OUTPUTS WITH VOLTAGE AND CURRENT MONITORING

The operation of voltage and current monitors is reflected with the corresponding FlexLogic operands (CONT OP # VON,

CONT OP # VOFF, and CONT OP # ION) which can be used in protection, control, and alarm logic. The typical application of

the voltage monitor is breaker trip circuit integrity monitoring; a typical application of the current monitor is seal-in of the control command.

Refer to the Digital elements section of chapter 5 for an example of how form-A and solid-state relay contacts can be applied for breaker trip circuit integrity monitoring.

Consider relay contacts unsafe to touch when the unit is energized. If the relay contacts need to be used for low voltage accessible applications, ensure proper insulation levels.

USE OF FORM-A AND SOLID-STATE RELAY OUTPUTS IN HIGH IMPEDANCE CIRCUITS

For form-A and solid-state relay output contacts internally equipped with a voltage measuring circuit across the contact, the circuit has an impedance that can cause a problem when used in conjunction with external high input impedance monitoring equipment such as modern relay test set trigger circuits. These monitoring circuits may continue to read the form-A contact as being closed after it has closed and subsequently opened, when measured as an impedance.

The solution is to use the voltage measuring trigger input of the relay test set, and connect the form-A contact through a voltage-dropping resistor to a DC voltage source. If the 48 V DC output of the power supply is used as a source, a 500 , 10 W resistor is appropriate. In this configuration, the voltage across either the form-A contact or the resistor can be used to monitor the state of the output.

Wherever a tilde “~” symbol appears, substitute with the slot position of the module; wherever a number sign “#” appears, substitute the contact number

When current monitoring is used to seal-in the form-A and solid-state relay contact outputs, the FlexLogic operand driving the contact output should be given a reset delay of 10 ms to prevent damage of the output contact (in situations when the element initiating the contact output is bouncing, at values in the region of the pickup value).

3-14 L90 Line Current Differential System GE Multilin

3 HARDWARE 3.2 WIRING

Table 3–2: CONTACT INPUT AND OUTPUT MODULE ASSIGNMENTS

~6A MODULE ~6B MODULE ~6C MODULE ~6D MODULE

TERMINAL

ASSIGNMENT

~1 Form-A ~1 Form-A ~1 Form-C ~1a, ~1c 2 Inputs

~2 Form-A ~2 Form-A ~2 Form-C ~2a, ~2c 2 Inputs

~3 Form-C ~3 Form-C ~3 Form-C ~3a, ~3c 2 Inputs

~4 Form-C ~4 Form-C ~4 Form-C ~4a, ~4c 2 Inputs

~5a, ~5c 2 Inputs ~5 Form-C ~5 Form-C ~5a, ~5c 2 Inputs

~6a, ~6c 2 Inputs ~6 Form-C ~6 Form-C ~6a, ~6c 2 Inputs

~7a, ~7c 2 Inputs ~7a, ~7c 2 Inputs ~7 Form-C ~7a, ~7c 2 Inputs

~8a, ~8c 2 Inputs ~8a, ~8c 2 Inputs ~8 Form-C ~8a, ~8c 2 Inputs

TERMINAL

ASSIGNMENT

~1Form-C ~1Fast Form-C ~1 Form-A ~1 Form-A

~2Form-C ~2Fast Form-C ~2 Form-A ~2 Form-A

~3Form-C ~3Fast Form-C ~3 Form-A ~3 Form-A

~4Form-C ~4Fast Form-C ~4 Form-A ~4 Form-A

~5a, ~5c 2 Inputs ~5Fast Form-C ~5a, ~5c 2 Inputs ~5 Form-A

~6a, ~6c 2 Inputs ~6Fast Form-C ~6a, ~6c 2 Inputs ~6 Form-A

~7a, ~7c 2 Inputs ~7Fast Form-C ~7a, ~7c 2 Inputs ~7a, ~7c 2 Inputs

~8a, ~8c 2 Inputs ~8Fast Form-C ~8a, ~8c 2 Inputs ~8a, ~8c 2 Inputs

OUTPUT OR

INPUT

~6E MODULE ~6F MODULE ~6G MODULE ~6H MODULE

OUTPUT OR

INPUT

TER MINAL

ASSIGNMENT

TER MINAL

ASSIGNMENT

OUTPUT OR

INPUT

OUTPUT TERMINAL

TERMINAL

ASSIGNMENT

OUTPUT TERMINAL

OUTPUT OR

INPUT

ASSIGNMENT

TER MINAL

ASSIGNMENT

OUTPUT

OUTPUT OR

INPUT

~6K MODULE ~6L MODULE ~6M MODULE ~6N MODULE

TERMINAL

ASSIGNMENT

~1 Form-C ~1Form-A ~1Form-A ~1Form-A

~2 Form-C ~2Form-A ~2Form-A ~2Form-A

~3 Form-C ~3Form-C ~3Form-C ~3Form-A

~4 Form-C ~4Form-C ~4Form-C ~4Form-A

~5 Fast Form-C ~5a, ~5c 2 Inputs ~5Form-C ~5a, ~5c 2 Inputs

~6 Fast Form-C ~6a, ~6c 2 Inputs ~6Form-C ~6a, ~6c 2 Inputs

~7 Fast Form-C ~7a, ~7c 2 Inputs ~7a, ~7c 2 Inputs ~7a, ~7c 2 Inputs

~8 Fast Form-C ~8a, ~8c 2 Inputs ~8a, ~8c 2 Inputs ~8a, ~8c 2 Inputs

~6P MODULE ~6R MODULE ~6S MODULE ~6T MODULE

TERMINAL

ASSIGNMENT

~1 Form-A ~1Form-A ~1Form-A ~1Form-A

~2 Form-A ~2Form-A ~2Form-A ~2Form-A

~3 Form-A ~3Form-C ~3Form-C ~3Form-A

~4 Form-A ~4Form-C ~4Form-C ~4Form-A

~5 Form-A ~5a, ~5c 2 Inputs ~5Form-C ~5a, ~5c 2 Inputs

~6 Form-A ~6a, ~6c 2 Inputs ~6Form-C ~6a, ~6c 2 Inputs

~7a, ~7c 2 Inputs ~7a, ~7c 2 Inputs ~7a, ~7c 2 Inputs ~7a, ~7c 2 Inputs

~8a, ~8c 2 Inputs ~8a, ~8c 2 Inputs ~8a, ~8c 2 Inputs ~8a, ~8c 2 Inputs

OUTPUT TERMINAL

OUTPUT OR

INPUT

ASSIGNMENT

TER MINAL

ASSIGNMENT

OUTPUT OR

INPUT

OUTPUT OR

INPUT

TERMINAL

ASSIGNMENT

TERMINAL

ASSIGNMENT

OUTPUT OR

INPUT

OUTPUT OR

INPUT

TER MINAL

ASSIGNMENT

TER MINAL

ASSIGNMENT

OUTPUT OR

INPUT

OUTPUT OR

INPUT

GE Multilin L90 Line Current Differential System 3-15

3.2 WIRING 3 HARDWARE

~6U MODULE ~6V MODULE ~67 MODULE ~4A MODULE

TERMINAL

ASSIGNMENT

~1 Form-A ~1 Form-A ~1Form-A ~1Not Used

~2 Form-A ~2 Form-A ~2Form-A ~2 Solid-State

~3 Form-A ~3 Form-C ~3Form-A ~3Not Used

~4 Form-A ~4 2 Outputs ~4Form-A ~4 Solid-State

~5 Form-A ~5a, ~5c 2 Inputs ~5Form-A ~5Not Used

~6 Form-A ~6a, ~6c 2 Inputs ~6Form-A ~6 Solid-State

~7a, ~7c 2 Inputs ~7a, ~7c 2 Inputs ~7Form-A ~7Not Used

~8a, ~8c 2 Inputs ~8a, ~8c 2 Inputs ~8Form-A ~8 Solid-State

TERMINAL

ASSIGNMENT

~1Not Used ~1 Not Used ~1a, ~1c 2 Inputs ~1 2 Outputs

~2Solid-State ~2 Solid-State ~2a, ~2c 2 Inputs ~2 2 Outputs

~3Not Used ~3 Not Used ~3a, ~3c 2 Inputs ~3 2 Outputs

~4Solid-State ~4 Solid-State ~4a, ~4c 2 Inputs ~4 2 Outputs

~5Not Used ~5 Not Used ~5a, ~5c 2 Inputs ~5 2 Outputs

~6Solid-State ~6 Solid-State ~6a, ~6c 2 Inputs ~6 2 Outputs

~7Not Used ~7 Not Used ~7a, ~7c 2 Inputs ~72 Outputs

~8Solid-State ~8 Solid-State ~8a, ~8c 2 Inputs ~8Not Used

OUTPUT OR

INPUT

~4B MODULE ~4C MODULE ~4D MODULE ~4L MODULE

OUTPUT TERMINAL

TER MINAL

ASSIGNMENT

OUTPUT OR

INPUT

OUTPUT TERMINAL

TERMINAL

ASSIGNMENT

OUTPUT TERMINAL

ASSIGNMENT

OUTPUT

3-16 L90 Line Current Differential System GE Multilin

3 HARDWARE 3.2 WIRING

Figure 3–17: CONTACT INPUT AND OUTPUT MODULE WIRING (1 of 2)

GE Multilin L90 Line Current Differential System 3-17

DIGITAL I/O

CONTACT IN 7a

CONTACT IN 7c

CONTACT IN 8a

CONTACT IN 8c

COMMON 7b

SURGE

DIGITAL I/O

CONTACT IN 7a

CONTACT IN 7c

CONTACT IN 8a

CONTACT IN 8c

COMMON 7b

SURGE

DIGITAL I/O

CONTACT IN 7a

CONTACT IN 7c

CONTACT IN 8a

CONTACT IN 8c

COMMON 7b

SURGE

DIGITAL I/O

CONTACT IN 7a

CONTACT IN 7c

CONTACT IN 8a

CONTACT IN 8c

COMMON 7b

SURGE

DIGITAL I/O

CONTACT IN 7a

CONTACT IN 5a

CONTACT IN 7c

CONTACT IN 5c

CONTACT IN 8a

CONTACT IN 6a

CONTACT IN 8c

CONTACT IN 6c

COMMON 7b

COMMON 5b

SURGE

DIGITAL I/O

CONTACT IN 7a

CONTACT IN 5a

CONTACT IN 7c

CONTACT IN 5c

CONTACT IN 8a

CONTACT IN 6a

CONTACT IN 8c

CONTACT IN 6c

COMMON 7b

COMMON 5b

SURGE

DIGITAL I/O

CONTACT IN 7a

CONTACT IN 5a

CONTACT IN 7c

CONTACT IN 5c

CONTACT IN 8a

CONTACT IN 6a

CONTACT IN 8c

CONTACT IN 6c

COMMON 7b

COMMON 5b

SURGE

DIGITAL I/O

CONTACT IN 7a

CONTACT IN 5a

CONTACT IN 7c

CONTACT IN 5c

CONTACT IN 8a

CONTACT IN 6a

CONTACT IN 8c

CONTACT IN 6c

COMMON 7b

COMMON 5b

SURGE

842763A2.CDR

3.2 WIRING 3 HARDWARE

Figure 3–18: CONTACT INPUT AND OUTPUT MODULE WIRING (2 of 2)

For proper functionality, observe correct polarity for all contact input and solid state output connections.

3-18 L90 Line Current Differential System GE Multilin

3 HARDWARE 3.2 WIRING

NOTE

CONTACT INPUTS

A dry contact has one side connected to terminal B3b. This is the positive 48 V DC voltage rail supplied by the power supply module. The other side of the dry contact is connected to the required contact input terminal. Each contact input group has its own common (negative) terminal which must be connected to the DC negative terminal (B3a) of the power supply module. When a dry contact closes, a current of 1 to 3 mA flows through the associated circuit.

A wet contact has one side connected to the positive terminal of an external DC power supply. The other side of this contact is connected to the required contact input terminal. If a wet contact is used, then the negative side of the external source must be connected to the relay common (negative) terminal of each contact group. The maximum external source voltage for this arrangement is 300 V DC.

The voltage threshold at which each group of four contact inputs detects a closed contact input is programmable as 17 V DC for 24 V sources, 33 V DC for 48 V sources, 84 V DC for 110 to 125 V sources, and 166 V DC for 250 V sources.

Figure 3–19: DRY AND WET CONTACT INPUT CONNECTIONS

Wherever a tilde “~” symbol appears, substitute with the slot position of the module.

Contact outputs can be ordered as form-A or form-C. The form-A contacts can be connected for external circuit supervision. These contacts are provided with voltage and current monitoring circuits used to detect the loss of DC voltage in the circuit, and the presence of DC current flowing through the contacts when the form-A contact closes. If enabled, the current monitoring can be used as a seal-in signal to ensure that the form-A contact does not attempt to break the energized inductive coil circuit and weld the output contacts.

There is no provision in the relay to detect a DC ground fault on 48 V DC control power external output. We recommend using an external DC supply.

GE Multilin L90 Line Current Differential System 3-19

3.2 WIRING 3 HARDWARE

842749A1.CDR

50 to 70 mA

3 mA

25 to 50 ms

current

time

CONTACT INPUT 1 AUTO-BURNISH = OFF

= OFFCONTACT INPUT 2 AUTO-BURNISH

CONTACT INPUT 1 AUTO-BURNISH CONTACT INPUT 2 AUTO-BURNISH

= ON = OFF

CONTACT INPUT 1 AUTO-BURNISH CONTACT INPUT 2 AUTO-BURNISH

= OFF = ON

CONTACT INPUT 1 AUTO-BURNISH CONTACT INPUT 2 AUTO-BURNISH

= ON = ON

842751A1.CDR

USE OF CONTACT INPUTS WITH AUTO-BURNISHING

The contact inputs sense a change of the state of the external device contact based on the measured current. When external devices are located in a harsh industrial environment (either outdoor or indoor), their contacts can be exposed to various types of contamination. Normally, there is a thin film of insulating sulfidation, oxidation, or contaminates on the surface of the contacts, sometimes making it difficult or impossible to detect a change of the state. This film must be removed to establish circuit continuity – an impulse of higher than normal current can accomplish this.

The contact inputs with auto-burnish create a high current impulse when the threshold is reached to burn off this oxidation layer as a maintenance to the contacts. Afterwards the contact input current is reduced to a steady-state current. The impulse has a 5 second delay after a contact input changes state.

Figure 3–20: CURRENT THROUGH CONTACT INPUTS WITH AUTO-BURNISHING

Regular contact inputs limit current to less than 3 mA to reduce station battery burden. In contrast, contact inputs with autoburnishing allow currents up to 50 to 70 mA at the first instance when the change of state was sensed. Then, within 25 to 50 ms, this current is slowly reduced to 3 mA as indicated above. The 50 to 70 mA peak current burns any film on the contacts, allowing for proper sensing of state changes. If the external device contact is bouncing, the auto-burnishing starts when external device contact bouncing is over.

Another important difference between the auto-burnishing input module and the regular input modules is that only two contact inputs have common ground, as opposed to four contact inputs sharing one common ground (refer to the Contact Input and Output Module Wiring diagrams). This is beneficial when connecting contact inputs to separate voltage sources. Consequently, the threshold voltage setting is also defined per group of two contact inputs.

The auto-burnish feature can be disabled or enabled using the DIP switches found on each daughter card. There is a DIP switch for each contact, for a total of 16 inputs.

Figure 3–21: AUTO-BURNISH DIP SWITCHES

The auto-burnish circuitry has an internal fuse for safety purposes. During regular maintenance, check the autoburnish functionality using an oscilloscope.

3-20 L90 Line Current Differential System GE Multilin

3 HARDWARE 3.2 WIRING

NOTE

3.2.7 TRANSDUCER INPUTS AND OUTPUTS

Transducer input modules can receive input signals from external dcmA output transducers (dcmA In) or resistance temperature detectors (RTD). Hardware and software is provided to receive signals from these external transducers and convert these signals into a digital format for use as required.

Transducer output modules provide DC current outputs in several standard dcmA ranges. Software is provided to configure virtually any analog quantity used in the relay to drive the analog outputs.

Every transducer input/output module has a total of 24 terminal connections. These connections are arranged as three terminals per row with a total of eight rows. A given row can be used for either inputs or outputs, with terminals in column "a" having positive polarity and terminals in column "c" having negative polarity. Since an entire row is used for a single input/ output channel, the name of the channel is assigned using the module slot position and row number.

Each module also requires that a connection from an external ground bus be made to terminal 8b. The current outputs require a twisted-pair shielded cable, where the shield is grounded at one end only. The figure below illustrates the transducer module types (5A, 5C, 5D, 5E, and 5F) and channel arrangements that can be ordered for the relay.

Wherever a tilde “~” symbol appears, substitute with the slot position of the module.

Figure 3–22: TRANSDUCER INPUT/OUTPUT MODULE WIRING

GE Multilin L90 Line Current Differential System 3-21

3.2 WIRING 3 HARDWARE

NOTE

3.2.8 RS232 FACEPLATE PORT

A 9-pin RS232C serial port is located on the L90 faceplate for programming with a computer. All that is required to use this interface is a computer running the EnerVista UR Setup software provided with the relay. Cabling for the RS232 port is shown in the following figure for both 9-pin and 25-pin connectors.

The baud rate for this port is fixed at 19200 bps.

Figure 3–23: RS232 FACEPLATE PORT CONNECTION

3.2.9 CPU COMMUNICATION PORTS

a) OPTIONS

In addition to the faceplate RS232 port, the L90 provides a rear RS485 communication port.

The CPU modules do not require a surge ground connection.

3-22 L90 Line Current Differential System GE Multilin

3 HARDWARE 3.2 WIRING

Figure 3–24: CPU MODULE COMMUNICATIONS WIRING

b) RS485 PORTS

RS485 data transmission and reception are accomplished over a single twisted pair with transmit and receive data alternating over the same two wires. Through the use of the port, continuous monitoring and control from a remote computer, SCADA system, or PLC is possible.

To minimize errors from noise, the use of shielded twisted pair wire is recommended. Correct polarity must also be observed. For instance, the relays must be connected with all RS485 “+” terminals connected together, and all RS485 “–” terminals connected together. Though data is transmitted over a two-wire twisted pair, all RS485 devices require a shared reference, or common voltage. This common voltage is implied to be a power supply common. Some systems allow the shield (drain wire) to be used as common wire and to connect directly to the L90 COM terminal (#3); others function correctly only if the common wire is connected to the L90 COM terminal, but insulated from the shield.

To avoid loop currents, ground the shield at only one point. If other system considerations require the shield to be grounded at more than one point, install resistors (typically 100 ohms) between the shield and ground at each grounding point. Each relay needs to be daisy-chained to the next one in the link. A maximum of 32 relays can be connected in this manner without exceeding driver capability. For larger systems, additional serial channels must be added. It is also possible to use commercially available repeaters to have more than 32 relays on a single channel. Avoid star or stub connections entirely.

GE Multilin L90 Line Current Differential System 3-23

3.2 WIRING 3 HARDWARE

NOTE

Lightning strikes and ground surge currents can cause large momentary voltage differences between remote ends of the communication link. For this reason, surge protection devices are internally provided at both communication ports. An isolated power supply with an optocoupled data interface also acts to reduce noise coupling. To ensure maximum reliability, all equipment should have similar transient protection devices installed.

Terminate both ends of the RS485 circuit with an impedance as shown below.

Figure 3–25: RS485 SERIAL CONNECTION

c) 100BASE-FX FIBER OPTIC PORTS

Ensure that the dust covers are installed when the fiber is not in use. Dirty or scratched connectors can lead to high losses on a fiber link.

Observing any fiber transmitter output can injure the eye.

The fiber optic communication ports allow for fast and efficient communications between relays at 100 Mbps. Optical fiber can be connected to the relay supporting a wavelength of 1310 nm in multi-mode.

The fiber optic port is designed such that the response times do not vary for any core that is 100 µm or less in diameter,

62.5 µm for 100 Mbps. For optical power budgeting, splices are required every 1 km for the transmitter/receiver pair. When

splicing optical fibers, the diameter and numerical aperture of each fiber must be the same.

3-24 L90 Line Current Differential System GE Multilin

3 HARDWARE 3.2 WIRING

NOTE

3.2.10 IRIG-B

IRIG-B is a standard time code format that allows stamping of events to be synchronized among connected devices within 1 millisecond. The IRIG time code formats are serial, width-modulated codes that can be either DC level shifted or amplitude modulated (AM). Third party equipment is available for generating the IRIG-B signal; this equipment can use a GPS satellite system to obtain the time reference so that devices at different geographic locations can be synchronized.

Figure 3–26: OPTIONS FOR THE IRIG-B CONNECTION

Using an amplitude modulated receiver causes errors up to 1 ms in event time-stamping.

Using an amplitude modulated receiver also causes errors of up to 1 ms in metered synchrophasor values.

GE Multilin L90 Line Current Differential System 3-25

3.3 PILOT CHANNEL COMMUNICATIONS 3 HARDWARE

3.3PILOT CHANNEL COMMUNICATIONS 3.3.1 DESCRIPTION

A special inter-relay communications module is available for the L90. This module is plugged into slot “W” in horizontally mounted units and slot “R” in vertically mounted units. Inter-relay channel communications is not the same as 10/100BaseF interface communications (available as an option with the CPU module). Channel communication is used for sharing data among relays.

The inter-relay communications modules are available with several interfaces as shown in the table below.

Table 3–3: CHANNEL COMMUNICATION OPTIONS

MODULE SPECIFICATION

2A C37.94SM, 1300 nm, single-mode, ELED, 1 channel single-mode

2B C37.94SM, 1300 nm, single-mode, ELED, 2 channel single-mode

2E Bi-phase, 1 channel

2F Bi-phase, 2 channel

2G IEEE C37.94, 820 nm, 128 kbps, multi-mode, LED, 1 channel

2H IEEE C37.94, 820 nm, 128 kbps, multi-mode, LED, 2 channels

2S Managed Ethernet switch with high voltage power supply

2T Managed Ethernet switch with low voltage power supply

72 1550 nm, single-mode, laser, 1 channel

73 1550 nm, single-mode, laser, 2 channels

74 Channel 1 - RS422; channel 2 - 1550 nm, single-mode, laser

75 Channel 1 - G.703; channel 2 - 1550 nm, single-mode, laser

76 IEEE C37.94, 820 nm, 64 kbps, multi-mode, LED, 1 channel

77 IEEE C37.94, 820 nm, 64 kbps, multi-mode, LED, 2 channels

7A 820 nm, multi-mode, LED, 1 channel

7B 1300 nm, multi-mode, LED, 1 channel

7C 1300 nm, single-mode, ELED, 1 channel

7D 1300 nm, single-mode, laser, 1 channel

7E Channel 1: G.703, Channel 2: 820 nm, multi-mode

7F Channel 1: G.703, Channel 2: 1300 nm, multi-mode

7G Channel 1: G.703, Channel 2: 1300 nm, single-mode ELED

7H 820 nm, multi-mode, LED, 2 channels

7I 1300 nm, multi-mode, LED, 2 channels

7J 1300 nm, single-mode, ELED, 2 channels

7K 1300 nm, single-mode, LASER, 2 channels

7L Channel 1: RS422, channel: 820 nm, multi-mode, LED

7M Channel 1: RS422, channel 2: 1300 nm, multi-mode, LED

7N Channel 1: RS422, channel 2: 1300 nm, single-mode, ELED

7P Channel 1: RS422, channel 2: 1300 nm, single-mode, laser

7Q Channel 1: G.703, channel 2: 1300 nm, single-mode, laser

7R G.703, 1 channel

7S G.703, 2 channels

7T RS422, 1 channel

7V RS422, 2 channels, 2 clock inputs

7W RS422, 2 channels

All of the fiber modules use ST type connectors. For two-terminal applications, each L90 relay requires at least one communications channel.

3-26 L90 Line Current Differential System GE Multilin

3 HARDWARE 3.3 PILOT CHANNEL COMMUNICATIONS

NOTE

The current differential function must be “Enabled” for the communications module to properly operate. Refer to

SETTINGS  GROUPED ELEMENTS  LINE DIFFERENTIAL  CURRENT DIFFERENTIAL menu.

The fiber optic modules (7A to 7W) are designed for back-to-back connections of UR-series relays only. For connections to higher-order systems, use the 72 to 77 modules or the 2A and 2B modules.

Observing any fiber transmitter output can injure the eye.

3.3.2 FIBER: LED AND ELED TRANSMITTERS

The following figure shows the configuration for the 7A, 7B, 7C, 7H, 7I, and 7J fiber-only modules.

Figure 3–27: LED AND ELED FIBER MODULES

3.3.3 FIBER-LASER TRANSMITTERS

The following figure shows the configuration for the 72, 73, 7D, and 7K fiber-laser module.

Figure 3–28: LASER FIBER MODULES

When using a laser Interface, attenuators can be necessary to ensure that you do not exceed the maximum optical input power to the receiver.

GE Multilin L90 Line Current Differential System 3-27

3.3 PILOT CHANNEL COMMUNICATIONS 3 HARDWARE

NOTE

3.3.4 G.703 INTERFACE

a) DESCRIPTION

The following figure shows the 64K ITU G.703 co-directional interface configuration.

The G.703 module is fixed at 64 kbps. The SETTINGS > PRODUCT SETUP > DIRECT I/O > DIRECT I/O DATA RATE setting is not applicable to this module.

AWG 24 twisted shielded pair is recommended for external connections, with the shield grounded only at one end. Connecting the shield to pin X1a or X6a grounds the shield since these pins are internally connected to ground. Thus, if pin X1a or X6a is used, do not ground at the other end. This interface module is protected by surge suppression devices.

Figure 3–29: G.703 INTERFACE CONFIGURATION

The following figure shows the typical pin interconnection between two G.703 interfaces. For the actual physical arrangement of these pins, see the Rear terminal assignments section earlier in this chapter. All pin interconnections are to be maintained for a connection to a multiplexer.

Figure 3–30: TYPICAL PIN INTERCONNECTION BETWEEN TWO G.703 INTERFACES

Pin nomenclature can differ from one manufacturer to another. Therefore, it is not uncommon to see pinouts numbered TxA, TxB, RxA and RxB. In such cases, it can be assumed that “A” is equivalent to “+” and “B” is equivalent to “–”.

b) G.703 SELECTION SWITCH PROCEDURES

1. With the power to the relay off, remove the G.703 module (7R or 7S) as follows. Record the original location of the module to help ensure that the same or replacement module is inserted into the correct slot.

2. Simultaneously pull the ejector/inserter clips located at the top and at the bottom of each module in order to release the module for removal.

3. Remove the module cover screw.

4. Remove the top cover by sliding it towards the rear and then lift it upwards.

5. Set the timing selection switches (channel 1, channel 2) to the desired timing modes.

6. Replace the top cover and the cover screw.

3-28 L90 Line Current Differential System GE Multilin

3 HARDWARE 3.3 PILOT CHANNEL COMMUNICATIONS

7. Re-insert the G.703 module. Take care to ensure that the correct module type is inserted into the correct slot position.

The ejector/inserter clips located at the top and at the bottom of each module must be in the disengaged position as the module is smoothly inserted into the slot. Once the clips have cleared the raised edge of the chassis, engage the clips simultaneously. When the clips have locked into position, the module is fully inserted.

Figure 3–31: G.703 TIMING SELECTION SWITCH SETTING

Table 3–4: G.703 TIMING SELECTIONS

SWITCHES FUNCTION

S1 OFF octet timing disabled

S5 and S6 S5 = OFF and S6 = OFF loop timing mode

c) G.703 OCTET TIMING

If octet timing is enabled (ON), this 8 kHz signal is asserted during the violation of bit 8 (LSB) necessary for connecting to higher order systems. When L90s are connected back-to-back, octet timing is disabled (OFF).

d) G.703 TIMING MODES

There are two timing modes for the G.703 module: internal timing mode and loop timing mode (default).

• Internal Timing Mode: The system clock is generated internally. Therefore, the G.703 timing selection should be in

the internal timing mode for back-to-back (UR-to-UR) connections. For back-to-back connections, set for octet timing (S1 = OFF) and timing mode to internal timing (S5 = ON and S6 = OFF).

• Loop Timing Mode: The system clock is derived from the received line signal. Therefore, the G.703 timing selection

should be in loop timing mode for connections to higher order systems. For connection to a higher order system (URto-multiplexer, factory defaults), set to octet timing (S1 = ON) and set timing mode to loop timing (S5 = OFF and S6 = OFF).

ON octet timing 8 kHz

S5 = ON and S6 = OFF internal timing mode S5 = OFF and S6 = ON minimum remote loopback mode S5 = ON and S6 = ON dual loopback mode

GE Multilin L90 Line Current Differential System 3-29

3.3 PILOT CHANNEL COMMUNICATIONS 3 HARDWARE

DMR

DMX

G7X

G7R

DMR = Differential Manchester Receiver DMX = Differential Manchester Transmitter G7X = G.703 Transmitter G7R = G.703 Receiver

842774A1.CDR

DMR

DMX

G7X

G7R

DMR = Differential Manchester Receiver DMX = Differential Manchester Transmitter G7X = G.703 Transmitter G7R = G.703 Receiver

842775A1.CDR

The switch settings for the internal and loop timing modes are shown below:

e) G.703 TEST MODES

In minimum remote loopback mode, the multiplexer is enabled to return the data from the external interface without any

processing to assist in diagnosing G.703 line-side problems irrespective of clock rate. Data enters from the G.703 inputs, passes through the data stabilization latch which also restores the proper signal polarity, passes through the multiplexer and then returns to the transmitter. The differential received data is processed and passed to the G.703 transmitter module after which point the data is discarded. The G.703 receiver module is fully functional and continues to process data and passes it to the differential Manchester transmitter module. Since timing is returned as it is received, the timing source is expected to be from the G.703 line side of the interface.

Figure 3–32: G.703 MINIMUM REMOTE LOOPBACK MODE

In dual loopback mode, the multiplexers are active and the functions of the circuit are divided into two with each receiver/ transmitter pair linked together to deconstruct and then reconstruct their respective signals. Differential Manchester data enters the Differential Manchester receiver module and then is returned to the differential Manchester transmitter module. Likewise, G.703 data enters the G.703 receiver module and is passed through to the G.703 transmitter module to be returned as G.703 data. Because of the complete split in the communications path and because, in each case, the clocks are extracted and reconstructed with the outgoing data, in this mode there must be two independent sources of timing. One source lies on the G.703 line side of the interface while the other lies on the differential Manchester side of the interface.

Figure 3–33: G.703 DUAL LOOPBACK MODE

3-30 L90 Line Current Differential System GE Multilin

3 HARDWARE 3.3 PILOT CHANNEL COMMUNICATIONS

NOTE

Shield

COM

Tx +

Tx –

Rx –

Rx +

Clock

RS422

channel 1

RS422

channel 2

Surge

2b 8a

Inter-relay communications 7W

842776A3.CDR

Dual-channel RS422 module

Shield

Tx +

Tx –

Rx –

Rx +

RS422

COM

Clock

Surge

2b 8a

Inter-relay comms. 7T

Single-channel RS422 module

~ indicates the slot position

3.3.5 RS422 INTERFACE

a) DESCRIPTION

There are three RS422 inter-relay communications modules available: single-channel RS422 (module 7T), dual-channel RS422 (module 7W), and dual-channel dual-clock RS422 (module 7V). The modules can be configured to run at 64 or 128 kbps. AWG 24 twisted shielded pair cable is recommended for external connections. These modules are protected by optically-isolated surge suppression devices.

The two-channel two-clock RS422 interface (module 7V) is intended for use with two independent channel banks with two independent clocks. It is intended for situations where a single clock for both channels is not acceptable.

The shield pins (6a and 7b) are internally connected to the ground pin (8a). Proper shield termination is as follows:

• Site 1: Terminate shield to pins 6a or 7b or both.

• Site 2: Terminate shield to COM pin 2b.

Match the clock terminating impedance with the impedance of the line.

The following figure shows the typical pin interconnection between two single-channel RS422 interfaces installed in slot W. All pin interconnections are to be maintained for a connection to a multiplexer.

b) TWO-CHANNEL APPLICATION VIA MULTIPLEXERS

The RS422 interface can be used for single channel or two channel applications over SONET/SDH or multiplexed systems. When used in single-channel applications, the RS422 interface links to higher order systems in a typical fashion observing transmit (Tx), receive (Rx), and send timing (ST) connections. However, when used in two-channel applications, certain criteria must be followed since there is one clock input for the two RS422 channels. The system functions correctly when the following connections are observed and your data module has a terminal timing feature. Terminal timing is a common feature to most synchronous data units that allows the module to accept timing from an external source. Using the terminal timing feature, two channel applications can be achieved if these connections are followed: The send timing outputs from the multiplexer (data module 1), connects to the clock inputs of the UR–RS422 interface in the usual fashion. In addition, the send timing outputs of data module 1 is also paralleled to the terminal timing inputs of data module 2. By using this con-

GE Multilin L90 Line Current Differential System 3-31

Figure 3–34: RS422 INTERFACE CONNECTIONS

Figure 3–35: TYPICAL PIN INTERCONNECTION BETWEEN TWO RS422 INTERFACES

3.3 PILOT CHANNEL COMMUNICATIONS 3 HARDWARE

Data module 1

Data module 2

Signal name

SD(A) - Send data

TT(A) - Terminal timing

TT(B) - Terminal timing

SD(B) - Send data

RD(A) - Received data

SD(A) - Send data

SD(B) - Send data

RD(B) - Received data

RS(A) - Request to send (RTS)

RT(A) - Receive timing

CS(A) - Clear To send

RT(B) - Receive timing

CS(B) - Clear To send

Local loopback

Remote loopback

Signal ground

ST(A) - Send timing

ST(B) - Send timing

RS(B) - Request to send (RTS)

831022A3.CDR

Shld.

Tx1(+)

Tx2(+)

Tx1(-)

Tx2(-)

Rx1(+)

Rx2(+)

com

Rx1(-)

Rx2(-)

–

INTER-RELAY COMMUNICATIONS

RS422

CHANNEL 1

RS422

CHANNEL 2

CLOCK

SURGE

Tx Clock

Tx Data

figuration, the timing for both data modules and both UR–RS422 channels are derived from a single clock source. As a result, data sampling for both of the UR–RS422 channels is synchronized via the send timing leads on data module 1 as shown below. If the terminal timing feature is not available or this type of connection is not desired, the G.703 interface is a viable option that does not impose timing restrictions.

Figure 3–36: TIMING CONFIGURATION FOR RS422 TWO-CHANNEL, THREE-TERMINAL APPLICATION

Data module 1 provides timing to the L90 RS422 interface via the ST(A) and ST(B) outputs. Data module 1 also provides timing to data module 2 TT(A) and TT(B) inputs via the ST(A) and AT(B) outputs. The data module pin numbers have been omitted in the figure above since they vary by manufacturer.

c) TRANSMIT TIMING

The RS422 interface accepts one clock input for transmit timing. It is important that the rising edge of the 64 kHz transmit timing clock of the multiplexer interface is sampling the data in the center of the transmit data window. Therefore, it is important to confirm clock and data transitions to ensure proper system operation. For example, the following figure shows the positive edge of the Tx clock in the center of the Tx data bit.

3-32 L90 Line Current Differential System GE Multilin

Figure 3–37: CLOCK AND DATA TRANSITIONS

GE UR Series L90 Instruction Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

1.1.1 CAUTIONS AND WARNINGS

a) GENERAL CAUTIONS AND WARNINGS

1.2UR OVERVIEW 1.2.1 INTRODUCTION TO THE UR

1.2.2 HARDWARE ARCHITECTURE

a) UR BASIC DESIGN

b) UR SIGNAL TYPES

c) UR SCAN OPERATION

1.2.3 SOFTWARE ARCHITECTURE

1.2.4 IMPORTANT CONCEPTS

1.3ENERVISTA UR SETUP SOFTWARE 1.3.1 PC REQUIREMENTS

1.3.2 INSTALLATION

1.3.3 CONFIGURING THE L90 FOR SOFTWARE ACCESS

a) OVERVIEW

b) CONFIGURING SERIAL COMMUNICATIONS

c) CONFIGURING ETHERNET COMMUNICATIONS

1.3.4 USING THE QUICK CONNECT FEATURE

a) USING QUICK CONNECT VIA THE FRONT PANEL RS232 PORT

b) USING QUICK CONNECT VIA THE REAR ETHERNET PORTS

1.3.5 CONNECTING TO THE L90 RELAY

1.4UR HARDWARE 1.4.1 MOUNTING AND WIRING

1.4.2 COMMUNICATIONS

1.4.3 FACEPLATE DISPLAY

1.5USING THE RELAY 1.5.1 FACEPLATE KEYPAD

1.5.2 MENU NAVIGATION

1.5.3 MENU HIERARCHY

1.5.4 RELAY ACTIVATION

1.5.5 RELAY PASSWORDS

1.5.6 FLEXLOGIC CUSTOMIZATION

1.5.7 COMMISSIONING

2 PRODUCT DESCRIPTION 2.1INTRODUCTION 2.1.1 OVERVIEW

2.1.2 FEATURES

2.1.3 ORDERING

a) OVERVIEW

b) ORDER CODES WITH TRADITIONAL CTS AND VTS

c) ORDER CODES WITH PROCESS BUS MODULES

2.1.4 REPLACEMENT MODULES

2.2PILOT CHANNEL RELAYING 2.2.1 INTER-RELAY COMMUNICATIONS

2.2.2 CHANNEL MONITOR

2.2.3 LOOPBACK TEST

2.2.4 DIRECT TRANSFER TRIPPING

2.3FUNCTIONALITY 2.3.1 PROTECTION AND CONTROL FUNCTIONS

2.3.2 METERING AND MONITORING FUNCTIONS

2.3.3 OTHER FUNCTIONS

a) ALARMS

b) LOCAL USER INTERFACE

c) TIME SYNCHRONIZATION

d) FUNCTION DIAGRAMS

2.4SPECIFICATIONS 2.4.1 PROTECTION ELEMENTS

2.4.2 USER-PROGRAMMABLE ELEMENTS

2.4.3 MONITORING

2.4.4 METERING

2.4.5 INPUTS

2.4.6 POWER SUPPLY

2.4.7 OUTPUTS

2.4.8 COMMUNICATIONS

2.4.9 INTER-RELAY COMMUNICATIONS

2.4.10 ENVIRONMENTAL

2.4.11 TYPE TESTS

2.4.12 PRODUCTION TESTS

2.4.13 APPROVALS

2.4.14 MAINTENANCE

3 HARDWARE 3.1DESCRIPTION 3.1.1 PANEL CUTOUT

a) HORIZONTAL UNITS

b) VERTICAL UNITS

3.1.2 MODULE WITHDRAWAL AND INSERTION

3.1.3 REAR TERMINAL LAYOUT

3.2WIRING 3.2.1 TYPICAL WIRING

3.2.2 DIELECTRIC STRENGTH

3.2.3 CONTROL POWER

3.2.4 CT/VT MODULES

3.2.5 PROCESS BUS MODULES

3.2.6 CONTACT INPUTS AND OUTPUTS

3.2.7 TRANSDUCER INPUTS AND OUTPUTS

3.2.8 RS232 FACEPLATE PORT

3.2.9 CPU COMMUNICATION PORTS

a) OPTIONS