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52TL
IND.CONT. EQ.
E83849
Digital Energy
L30 Line Current Differential
System
UR Series Instruction Manual
L30 revision: 6.0x
Manual P/N: 1601-9050-X3 (GEK-113622A)
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
*1601-9050-X3*
GE Multilin's Quality Management
System is registered to ISO
9001:2008
QMI # 005094
UL # A3775
Page 2
Copyright © 2015 GE Multilin Inc. All rights reserved.
L30 Line Current Differential System UR Series Instruction Manual revision 6.0x.
FlexLogic, FlexElement, FlexCurve, FlexAnalog, FlexInteger, FlexState, EnerVista,
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: 1601-9050-X3 (August 2015)
Page 3
TABLE OF CONTENTS
1. GETTING STARTED 1.1 IMPORTANT PROCEDURES
1.1.1 CAUTIONS AND WARNINGS ........................................................................... 1-1
1.1.2 INSPECTION PROCEDURE .............................................................................1-2
1.2 UR OVERVIEW
1.2.1 INTRODUCTION TO THE UR ........................................................................... 1-3
1.2.2 HARDWARE ARCHITECTURE......................................................................... 1-4
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 L30 FOR SOFTWARE ACCESS.....................................1-7
1.3.4 USING THE QUICK CONNECT FEATURE.....................................................1-10
1.3.5 CONNECTING TO THE L30 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 ............................................................................. 2-9
2.2 PILOT CHANNEL RELAYING
2.2.1 INTER-RELAY COMMUNICATIONS............................................................... 2-11
2.2.2 CHANNEL MONITOR......................................................................................2-12
2.2.3 LOOPBACK TEST ........................................................................................... 2-13
2.2.4 DIRECT TRANSFER TRIPPING .....................................................................2-13
2.3 FUNCTIONALITY
2.3.1 PROTECTION AND CONTROL FUNCTIONS ................................................ 2-14
2.3.2 METERING AND MONITORING FUNCTIONS ............................................... 2-14
2.3.3 OTHER FUNCTIONS....................................................................................... 2-15
2.4 SPECIFICATIONS
2.4.1 PROTECTION ELEMENTS ............................................................................. 2-18
2.4.2 USER-PROGRAMMABLE ELEMENTS...........................................................2-20
2.4.3 MONITORING.................................................................................................. 2-21
2.4.4 METERING ......................................................................................................2-22
2.4.5 INPUTS............................................................................................................ 2-22
2.4.6 POWER SUPPLY ............................................................................................ 2-23
2.4.7 OUTPUTS........................................................................................................ 2-23
2.4.8 COMMUNICATION PROTOCOLS .................................................................. 2-25
2.4.9 INTER-RELAY COMMUNICATIONS............................................................... 2-26
2.4.10 ENVIRONMENTAL .......................................................................................... 2-26
2.4.11 TYPE TESTS ................................................................................................... 2-27
2.4.12 PRODUCTION TESTS ....................................................................................2-27
2.4.13 APPROVALS ................................................................................................... 2-28
2.4.14 MAINTENANCE ...............................................................................................2-28
GE Multilin L30 Line Current Differential System iii
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TABLE OF CONTENTS
3. HARDWARE 3.1 DESCRIPTION
3.1.1 PANEL CUTOUT ................................................................................................3-1
3.1.2 REAR TERMINAL LAYOUT ...............................................................................3-7
3.2 WIRING
3.2.1 TYPICAL WIRING ..............................................................................................3-8
3.2.2 DIELECTRIC STRENGTH..................................................................................3-9
3.2.3 CONTROL POWER............................................................................................3-9
3.2.4 CT AND VT MODULES ....................................................................................3-10
3.2.5 PROCESS BUS MODULES .............................................................................3-12
3.2.6 CONTACT INPUTS AND OUTPUTS................................................................3-12
3.2.7 TRANSDUCER INPUTS AND OUTPUTS........................................................3-20
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 .................................................................................................3-28
3.3.2 FIBER: LED AND ELED TRANSMITTERS ......................................................3-29
3.3.3 FIBER-LASER TRANSMITTERS .....................................................................3-29
3.3.4 G.703 INTERFACE...........................................................................................3-31
3.3.5 RS422 INTERFACE .........................................................................................3-34
3.3.6 TWO-CHANNEL TWO-CLOCK RS422 INTERFACE.......................................3-36
3.3.7 RS422 AND FIBER INTERFACE .....................................................................3-36
3.3.8 G.703 AND FIBER INTERFACE ......................................................................3-37
3.3.9 IEEE C37.94 INTERFACE................................................................................3-37
3.3.10 C37.94SM INTERFACE ...................................................................................3-41
3.4 MANAGED ETHERNET SWITCH MODULES
3.4.1 OVERVIEW ......................................................................................................3-45
3.4.2 MANAGED ETHERNET SWITCH MODULE HARDWARE..............................3-45
3.4.3 MANAGED SWITCH LED INDICATORS .........................................................3-46
3.4.4 INITIAL SETUP OF THE ETHERNET SWITCH MODULE...............................3-46
3.4.5 CONFIGURING THE MANAGED ETHERNET SWITCH MODULE.................3-50
3.4.6 UPLOADING L30 SWITCH MODULE FIRMWARE..........................................3-53
3.4.7 ETHERNET SWITCH SELF-TEST ERRORS...................................................3-55
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 ...................................................................................4-5
4.2.2 SECURING AND LOCKING FLEXLOGIC™ EQUATIONS ................................4-9
4.2.3 SETTINGS FILE TRACEABILITY.....................................................................4-11
4.3 FACEPLATE INTERFACE
4.3.1 FACEPLATE.....................................................................................................4-14
4.3.2 LED INDICATORS............................................................................................4-15
4.3.3 CUSTOM LABELING OF LEDS .......................................................................4-18
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 MENU ..............................................................................................5-1
5.1.2 INTRODUCTION TO ELEMENTS......................................................................5-4
5.1.3 INTRODUCTION TO AC SOURCES..................................................................5-5
iv L30 Line Current Differential System GE Multilin
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TABLE OF CONTENTS
5.2 PRODUCT SETUP
5.2.1 SECURITY .........................................................................................................5-8
5.2.2 DISPLAY PROPERTIES.................................................................................. 5-13
5.2.3 CLEAR RELAY RECORDS .............................................................................5-14
5.2.4 COMMUNICATIONS........................................................................................ 5-15
5.2.5 MODBUS USER MAP...................................................................................... 5-38
5.2.6 REAL TIME CLOCK......................................................................................... 5-39
5.2.7 FAULT REPORTS ........................................................................................... 5-40
5.2.8 OSCILLOGRAPHY .......................................................................................... 5-42
5.2.9 DATA LOGGER ............................................................................................... 5-44
5.2.10 USER-PROGRAMMABLE LEDS..................................................................... 5-45
5.2.11 USER-PROGRAMMABLE SELF-TESTS ........................................................ 5-48
5.2.12 CONTROL PUSHBUTTONS ...........................................................................5-49
5.2.13 USER-PROGRAMMABLE PUSHBUTTONS................................................... 5-50
5.2.14 FLEX STATE PARAMETERS.......................................................................... 5-56
5.2.15 USER-DEFINABLE DISPLAYS ....................................................................... 5-56
5.2.16 INSTALLATION................................................................................................5-58
5.3 REMOTE RESOURCES
5.3.1 REMOTE RESOURCES CONFIGURATION................................................... 5-59
5.4 SYSTEM SETUP
5.4.1 AC INPUTS...................................................................................................... 5-60
5.4.2 POWER SYSTEM............................................................................................ 5-61
5.4.3 SIGNAL SOURCES ......................................................................................... 5-62
5.4.4 87L POWER SYSTEM..................................................................................... 5-65
5.4.5 BREAKERS......................................................................................................5-71
5.4.6 DISCONNECT SWITCHES .............................................................................5-75
5.4.7 FLEXCURVES™..............................................................................................5-78
5.4.8 PHASOR MEASUREMENT UNIT.................................................................... 5-85
5.5 FLEXLOGIC™
5.5.1 INTRODUCTION TO FLEXLOGIC™............................................................. 5-102
5.5.2 FLEXLOGIC™ RULES .................................................................................. 5-111
5.5.3 FLEXLOGIC™ EVALUATION........................................................................ 5-111
5.5.4 FLEXLOGIC™ EXAMPLE ............................................................................. 5-112
5.5.5 FLEXLOGIC™ EQUATION EDITOR............................................................. 5-116
5.5.6 FLEXLOGIC™ TIMERS................................................................................. 5-116
5.5.7 FLEXELEMENTS™ ....................................................................................... 5-117
5.5.8 NON-VOLATILE LATCHES ........................................................................... 5-122
5.6 GROUPED ELEMENTS
5.6.1 OVERVIEW.................................................................................................... 5-123
5.6.2 SETTING GROUP .........................................................................................5-123
5.6.3 LINE DIFFERENTIAL ELEMENTS ................................................................ 5-123
5.6.4 PHASE CURRENT ........................................................................................5-129
5.6.5 NEUTRAL CURRENT....................................................................................5-140
5.6.6 GROUND CURRENT..................................................................................... 5-147
5.6.7 NEGATIVE SEQUENCE CURRENT ............................................................. 5-150
5.6.8 BREAKER FAILURE...................................................................................... 5-152
5.6.9 VOLTAGE ELEMENTS.................................................................................. 5-161
5.6.10 SUPERVISING ELEMENTS .......................................................................... 5-168
5.7 CONTROL ELEMENTS
5.7.1 OVERVIEW.................................................................................................... 5-170
5.7.2 TRIP BUS.......................................................................................................5-170
5.7.3 SETTING GROUPS .......................................................................................5-172
5.7.4 SELECTOR SWITCH..................................................................................... 5-173
5.7.5 UNDERFREQUENCY....................................................................................5-179
5.7.6 SYNCHROCHECK......................................................................................... 5-180
5.7.7 AUTORECLOSE............................................................................................5-184
5.7.8 DIGITAL ELEMENTS..................................................................................... 5-190
5.7.9 DIGITAL COUNTERS ....................................................................................5-193
5.7.10 MONITORING ELEMENTS ...........................................................................5-195
5.8 INPUTS AND OUTPUTS
5.8.1 CONTACT INPUTS........................................................................................ 5-206
5.8.2 VIRTUAL INPUTS.......................................................................................... 5-208
5.8.3 CONTACT OUTPUTS.................................................................................... 5-209
5.8.4 VIRTUAL OUTPUTS...................................................................................... 5-211
GE Multilin L30 Line Current Differential System v
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TABLE OF CONTENTS
5.8.5 REMOTE DEVICES........................................................................................5-212
5.8.6 REMOTE INPUTS ..........................................................................................5-213
5.8.7 REMOTE DOUBLE-POINT STATUS INPUTS...............................................5-214
5.8.8 REMOTE OUTPUTS ......................................................................................5-215
5.8.9 DIRECT INPUTS AND OUTPUTS..................................................................5-215
5.8.10 RESETTING ...................................................................................................5-218
5.8.11 IEC 61850 GOOSE ANALOGS ......................................................................5-218
5.8.12 IEC 61850 GOOSE INTEGERS .....................................................................5-219
5.9 TRANSDUCER INPUTS AND OUTPUTS
5.9.1 DCMA INPUTS ...............................................................................................5-220
5.9.2 RTD INPUTS ..................................................................................................5-221
5.9.3 DCMA OUTPUTS ...........................................................................................5-223
5.10 TESTING
5.10.1 TEST MODE...................................................................................................5-227
5.10.2 FORCE CONTACT INPUTS...........................................................................5-228
5.10.3 FORCE CONTACT OUTPUTS.......................................................................5-229
5.10.4 CHANNEL TESTS ..........................................................................................5-230
5.10.5 PHASOR MEASUREMENT UNIT TEST VALUES.........................................5-230
6. ACTUAL VALUES 6.1 OVERVIEW
6.1.1 ACTUAL VALUES MENU...................................................................................6-1
6.2 STATUS
6.2.1 CONTACT INPUTS ............................................................................................6-3
6.2.2 VIRTUAL INPUTS ..............................................................................................6-3
6.2.3 REMOTE INPUTS ..............................................................................................6-3
6.2.4 REMOTE DOUBLE-POINT STATUS INPUTS...................................................6-4
6.2.5 DIRECT INPUTS ................................................................................................6-4
6.2.6 CONTACT OUTPUTS ........................................................................................6-4
6.2.7 VIRTUAL OUTPUTS ..........................................................................................6-5
6.2.8 AUTORECLOSE.................................................................................................6-5
6.2.9 REMOTE DEVICES............................................................................................6-5
6.2.10 CHANNEL TESTS ..............................................................................................6-6
6.2.11 DIGITAL COUNTERS.........................................................................................6-7
6.2.12 SELECTOR SWITCHES ....................................................................................6-7
6.2.13 FLEX STATES....................................................................................................6-8
6.2.14 IEC 61850 GOOSE INTEGERS .........................................................................6-8
6.2.15 ETHERNET ........................................................................................................6-8
6.2.16 ETHERNET SWITCH .........................................................................................6-9
6.3 METERING
6.3.1 METERING CONVENTIONS ...........................................................................6-10
6.3.2 DIFFERENTIAL CURRENT..............................................................................6-13
6.3.3 SOURCES ........................................................................................................6-14
6.3.4 SYNCHROCHECK ...........................................................................................6-17
6.3.5 TRACKING FREQUENCY................................................................................6-18
6.3.6 FLEXELEMENTS™..........................................................................................6-18
6.3.7 IEC 61580 GOOSE ANALOG VALUES ...........................................................6-19
6.3.8 PHASOR MEASUREMENT UNIT ....................................................................6-19
6.3.9 TRANSDUCER INPUTS AND OUTPUTS........................................................6-21
6.4 RECORDS
6.4.1 FAULT REPORTS............................................................................................6-22
6.4.2 EVENT RECORDS...........................................................................................6-22
6.4.3 OSCILLOGRAPHY...........................................................................................6-23
6.4.4 DATA LOGGER................................................................................................6-23
6.4.5 PHASOR MEASUREMENT UNIT RECORDS .................................................6-23
6.4.6 BREAKER MAINTENANCE .............................................................................6-24
6.5 PRODUCT INFORMATION
6.5.1 MODEL INFORMATION...................................................................................6-25
6.5.2 FIRMWARE REVISIONS..................................................................................6-25
vi L30 Line Current Differential System GE Multilin
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TABLE OF CONTENTS
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
7.2 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 PASSWORD SECURITY
8.1.1 OVERVIEW........................................................................................................ 8-1
8.1.2 PASSWORD SECURITY MENU ....................................................................... 8-2
8.1.3 LOCAL PASSWORDS....................................................................................... 8-2
8.1.4 REMOTE PASSWORDS ................................................................................... 8-3
8.1.5 ACCESS SUPERVISION...................................................................................8-4
8.1.6 DUAL PERMISSION SECURITY ACCESS....................................................... 8-4
8.2 ENERVISTA SECURITY MANAGEMENT SYSTEM
8.2.1 OVERVIEW........................................................................................................ 8-6
8.2.2 ENABLING THE SECURITY MANAGEMENT SYSTEM................................... 8-6
8.2.3 ADDING A NEW USER ..................................................................................... 8-6
8.2.4 MODIFYING USER PRIVILEGES .....................................................................8-7
9. THEORY OF OPERATION 9.1 OVERVIEW
9.1.1 L30 DESIGN ...................................................................................................... 9-1
9.1.2 L30 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
9.3 FAULT LOCATOR
9.3.1 DESCRIPTION.................................................................................................9-20
10. APPLICATION OF
SETTINGS
10.1 CT REQUIREMENTS
10.1.1 INTRODUCTION.............................................................................................. 10-1
10.1.2 CT SATURATION ANALYSIS TOOL...............................................................10-2
GE Multilin L30 Line Current Differential System vii
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10.2 CURRENT DIFFERENTIAL (87L) SETTINGS
10.2.1 INTRODUCTION ..............................................................................................10-4
10.2.2 CURRENT DIFFERENTIAL PICKUP ...............................................................10-4
10.2.3 CURRENT DIFF RESTRAINT 1.......................................................................10-4
10.2.4 CURRENT DIFF RESTRAINT 2.......................................................................10-4
10.2.5 CURRENT DIFF BREAK POINT ......................................................................10-4
10.2.6 CT TAP .............................................................................................................10-5
10.3 CHANNEL ASYMMETRY COMPENSATION USING GPS
10.3.1 DESCRIPTION .................................................................................................10-7
10.3.2 COMPENSATION METHOD 1 .........................................................................10-7
10.3.3 COMPENSATION METHOD 2 .........................................................................10-8
10.3.4 COMPENSATION METHOD 3 .........................................................................10-8
10.4 INSTANTANEOUS ELEMENTS
10.4.1 INSTANTANEOUS ELEMENT ERROR DURING L30 SYNCHRONIZATION
........................................................................................................................10-10
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
12. MAINTENANCE 12.1 MODULES
12.1.1 REPLACE A MODULE .....................................................................................12-1
12.2 BATTERIES
12.2.1 REPLACE BATTERY .......................................................................................12-3
12.2.2 DISPOSE OF BATTERY ..................................................................................12-4
12.3 UNINSTALL AND CLEAR FILES AND DATA
12.3.1 UNINSTALL AND CLEAR FILES AND DATA ..................................................12-7
12.4 REPAIRS
12.4.1 REPAIRS ..........................................................................................................12-8
12.5 STORAGE
12.5.1 STORAGE ........................................................................................................12-9
12.6 DISPOSAL
12.6.1 DISPOSAL......................................................................................................12-10
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-8
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 MODBUS RTU CRC-16 ALGORITHM ..............................................................B-2
B.2 MODBUS FUNCTION CODES
B.2.1 SUPPORTED FUNCTION CODES ................................................................... B-4
B.2.2 READ ACTUAL VALUES OR SETTINGS (FUNCTION CODE 03/04H) ...........B-4
B.2.3 EXECUTE OPERATION (FUNCTION CODE 05H)........................................... B-5
B.2.4 STORE SINGLE SETTING (FUNCTION CODE 06H).......................................B-5
B.2.5 STORE MULTIPLE SETTINGS (FUNCTION CODE 10H)................................ B-6
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B.2.6 EXCEPTION RESPONSES...............................................................................B-6
B.3 FILE TRANSFERS
B.3.1 OBTAINING RELAY FILES VIA MODBUS........................................................B-7
B.4 MEMORY MAPPING
B.4.1 MODBUS MEMORY MAP .................................................................................B-9
B.4.2 DATA FORMATS.............................................................................................B-66
C. IEC 61850
COMMUNICATIONS
C.1 OVERVIEW
C.1.1 INTRODUCTION................................................................................................C-1
C.1.2 COMMUNICATION PROFILES.........................................................................C-1
C.1.3 FILE TRANSFER BY IEC 61850 .......................................................................C-2
C.2 SERVER DATA ORGANIZATION
C.2.1 OVERVIEW........................................................................................................C-3
C.2.2 GGIO1: DIGITAL STATUS VALUES .................................................................C-3
C.2.3 GGIO2: DIGITAL CONTROL VALUES..............................................................C-3
C.2.4 GGIO3: DIGITAL STATUS AND ANALOG VALUES FROM RECEIVED
GOOSE DATA ...................................................................................................C-3
C.2.5 GGIO4: GENERIC ANALOG MEASURED VALUES.........................................C-3
C.2.6 MMXU: ANALOG MEASURED VALUES...........................................................C-4
C.2.7 PROTECTION AND OTHER LOGICAL NODES...............................................C-4
C.3 SERVER FEATURES AND CONFIGURATION
C.3.1 BUFFERED/UNBUFFERED REPORTING........................................................C-6
C.3.2 FILE TRANSFER...............................................................................................C-6
C.3.3 TIMESTAMPS AND SCANNING.......................................................................C-6
C.3.4 LOGICAL DEVICE NAME..................................................................................C-6
C.3.5 LOCATION.........................................................................................................C-6
C.3.6 LOGICAL NODE NAME PREFIXES ..................................................................C-7
C.3.7 CONNECTION TIMING .....................................................................................C-7
C.3.8 NON-IEC 61850 DATA ......................................................................................C-7
C.3.9 COMMUNICATION SOFTWARE UTILITIES.....................................................C-7
C.4 GENERIC SUBSTATION EVENT SERVICES: GSSE AND GOOSE
C.4.1 OVERVIEW........................................................................................................C-8
C.4.2 GSSE CONFIGURATION..................................................................................C-8
C.4.3 FIXED GOOSE ..................................................................................................C-8
C.4.4 CONFIGURABLE GOOSE.................................................................................C-8
C.4.5 ETHERNET MAC ADDRESS FOR GSSE/GOOSE.........................................C-10
C.4.6 GSSE ID AND GOOSE ID SETTINGS ............................................................C-11
C.5 IEC 61850 IMPLEMENTATION VIA ENERVISTA UR SETUP
C.5.1 OVERVIEW......................................................................................................C-12
C.5.2 CONFIGURING IEC 61850 SETTINGS...........................................................C-13
C.5.3 ABOUT ICD FILES...........................................................................................C-14
C.5.4 CREATING AN ICD FILE WITH ENERVISTA UR SETUP ..............................C-18
C.5.5 ABOUT SCD FILES.........................................................................................C-18
C.5.6 IMPORTING AN SCD FILE WITH ENERVISTA UR SETUP...........................C-21
C.6 ACSI CONFORMANCE
C.6.1 ACSI BASIC CONFORMANCE STATEMENT.................................................C-23
C.6.2 ACSI MODELS CONFORMANCE STATEMENT............................................C-23
C.6.3 ACSI SERVICES CONFORMANCE STATEMENT .........................................C-24
C.7 LOGICAL NODES
C.7.1 LOGICAL NODES TABLE ...............................................................................C-27
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
GE Multilin L30 Line Current Differential System ix
Page 10
TABLE OF CONTENTS
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 L30 MANUAL.................................................................... F-1
F.2 ABBREVIATIONS
F.2.1 STANDARD ABBREVIATIONS ......................................................................... F-4
F.3 WARRANTY
F.3.1 GE MULTILIN WARRANTY............................................................................... F-6
x L30 Line Current Differential System GE Multilin
Page 11
1 GETTING STARTED 1.1 IMPORTANT PROCEDURES
DANGER
WARNING
CAUTION
NOTICE
DANGER
CAUTION
1 GETTING STARTED 1.1IMPORTANT PROCEDURES
Please read this chapter to help guide you through the initial setup of your new L30 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.
1
GE Multilin L30 Line Current Differential System 1-1
Page 12
1.1 IMPORTANT PROCEDURES 1 GETTING STARTED
831814A3.CDR
Model:
Mods:
Wiring Diagram:
Inst. Manual:
Serial Number:
Firmware:
Mfg. Date:
PO Num:
Item Num:
L30D00HCHF8AH6AM6BP8BX7A
000
See manual
1601-9050
MAZB98000029
D
NOV 26, 2012
600001234.56
Control Power:
Contact Inputs:
Contact Outputs:
88-300V DC @ 35W / 77-265V AC @ 35VA
300V DC Max 10mA
Refer to Instruction Manual
RATINGS:
L30
Line Differential Relay
- M A A B 9 7 0 0 0 0 9 9 -
GE Multilin
- M A A B 9 7 0 0 0 0 9 9 -
LISTED
52TL
IND.CONT. EQ.
E83849
NOTE
1.1.2 INSPECTION PROCEDURE
1
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.
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, please 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 94 485 88 54
North America toll-free 1 800 547 8629
FAX: +1 905 927 5098
E-MAIL: Worldwide multilin.tech@ge.com
Europe multilin.tech.euro@ge.com
HOME PAGE: http://www.gedigitalenergy.com/multilin
1-2 L30 Line Current Differential System GE Multilin
Page 13
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
first generation of equipment was gradually replaced by analog electronic equipment, most of which emulated the singlefunction approach of their electromechanical precursors. Both of these 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 multi-function capability, and did not significantly reduce the cabling and
auxiliary equipment required. However, recent digital relays have become quite multi-functional, reducing cabling and auxiliaries significantly. These devices also transfer data to central control facilities and Human Machine Interfaces using electronic communications. The functions performed by these products have become so broad that many users now prefer the
term IED (Intelligent Electronic Device).
It is obvious to station designers that the amount of cabling and auxiliary equipment installed in stations can be even further
reduced, to 20% to 70% of the levels common in 1990, to 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
as always, in increasing system reliability and efficiency. These objectives are realized through software which is used to
perform functions at both the station and supervisory levels. The use of these systems is growing rapidly.
High speed communications are required to meet the data transfer rates required by modern automatic control and monitoring systems. In the near future, very high speed communications will be 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 the capabilities outlined above will also provide significantly more power system data than is presently available,
enhance operations and maintenance, and permit the use of adaptive system configuration for protection and control systems. This new generation of equipment must also be easily incorporated into automation systems, at both the station and
enterprise levels. The GE Multilin Universal Relay (UR) has been developed to meet these goals.
1
GE Multilin L30 Line Current Differential System 1-3
Page 14
1.2 UR OVERVIEW 1 GETTING STARTED
827822A3.CDR
Input elements
LAN
Programming
device
Operator
interface
Contact inputs Contact outputs
Virtual inputs
Virtual outputs
Analog inputs
Analog outputs
CT inputs
VT inputs
Input
status
table
Output
status
table
Pickup
Dropout
Operate
Protective elements
Logic Gates
Remote outputs
- IEC 61850
CPU module
Output elements
Remote inputs
Direct inputs Direct outputs
1.2.2 HARDWARE ARCHITECTURE
1
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 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.
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.
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.
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1 GETTING STARTED 1.2 UR OVERVIEW
827823A3.CDR
Pickup (PKP)
Dropout (DPO)
Operate (OP)
Protective elements
Protection elements
serviced by sub-scan
Read inputs
Solve logic
Set outputs
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
1.2.3 SOFTWARE ARCHITECTURE
The firmware (software embedded in the relay) is designed in functional modules which 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,
hmi, communications, or any functional entity in the system.
Employing OOD/OOP in the software architecture of the L30 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 functionality classes. This
results in a common look and feel across the entire family of UR-series platform-based applications.
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. A description of how digital signals are used and routed within the relay is contained in the Introduction to Flex-
Logic™ section in chapter 5.
GE Multilin L30 Line Current Differential System 1-5
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1.3 ENERVISTA UR SETUP SOFTWARE 1 GETTING STARTED
1.3ENERVISTA UR SETUP SOFTWARE 1.3.1 PC REQUIREMENTS
1
The faceplate keypad and display or the EnerVista UR Setup software interface 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 PC
monitor can display more information in a simple comprehensible format.
The following minimum requirements must be met for the EnerVista UR Setup software to properly operate on a PC.
• Pentium class or higher processor (Pentium II 300 MHz or higher recommended)
• Windows 95, 98, 98SE, ME, NT 4.0 (Service Pack 4 or higher), 2000, XP
• Internet Explorer 4.0 or higher
• 128 MB of RAM (256 MB recommended)
• 200 MB of available space on system drive and 200 MB of available space on installation drive
• Video capable of displaying 800 x 600 or higher in high-color mode (16-bit color)
• RS232 and/or Ethernet port for communications to the relay
The following qualified modems have been tested to be compliant with the L30 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 (see previous section), use the following
procedure to install the EnerVista UR Setup from the enclosed GE EnerVista CD.
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 no-charge 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 “L30 Line Current Differential System” from the Install Software window as shown below. Select the “Web” option to ensure the most recent software
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1 GETTING STARTED 1.3 ENERVISTA UR SETUP SOFTWARE
release, or select “CD” if you do not have a web connection, then click the Add Now button to list software items for
the L30.
6. EnerVista Launchpad will obtain the software from the Web or CD and automatically start the installation program.
7. Select the complete path, including the new directory name, where the EnerVista UR Setup will be installed.
8. Click on Next to begin the installation. The files will be installed in the directory indicated and the installation program
will automatically create icons and add EnerVista UR Setup to the Windows start menu.
9. Click Finish to end the installation. The UR-series device will be added to the list of installed IEDs in the EnerVista
Launchpad window, as shown below.
1
1.3.3 CONFIGURING THE L30 FOR SOFTWARE ACCESS
a) OVERVIEW
The user can connect remotely to the L30 through the rear RS485 port or the rear Ethernet port with a PC running the
EnerVista UR Setup software. The L30 can also be accessed locally with a computer through the front panel RS232 port or
the rear Ethernet port using the Quick Connect feature.
GE Multilin L30 Line Current Differential System 1-7
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1.3 ENERVISTA UR SETUP SOFTWARE 1 GETTING STARTED
• To configure the L30 for remote access via the rear RS485 port(s), refer to the Configuring Serial Communications
1
section.
• To configure the L30 for remote access via the rear Ethernet port, refer to the Configuring Ethernet Communications
section. An Ethernet module must be specified at the time of ordering.
• To configure the L30 for local access with a computer through either the front RS232 port or rear Ethernet port, refer to
the Using the Quick Connect Feature section. An Ethernet module must be specified at the time of ordering for Ethernet communications.
b) CONFIGURING SERIAL COMMUNICATIONS
Before starting, verify that the serial cable is properly connected to the RS485 terminals 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 for details on configuring the RS232 port.
A computer with an RS232 port and a serial cable is required. To use the RS485 port at the back of the relay, a GE Multilin
F485 converter (or compatible RS232-to-RS485 converter) is required. See 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. Connect the computer to the F485 and the F485 to the RS485 terminal on the back of the UR device, or connect
directly the computer to the RS232 port on the front of the relay.
3. Select the “UR” device from the EnerVista Launchpad to start EnerVista UR Setup.
4. Click the Device Setup button to open the Device Setup window and click the Add Site button to define a new site.
5. 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 will use “Location 1” as the site name. Click
the OK button when complete.
6. The new site will appear 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.
7. Click the Add Device button to define the new device.
8. Enter the desired name in the “Device Name” field and a description (optional) of the site.
). See the Software Installation section for installation details.
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1 GETTING STARTED 1.3 ENERVISTA UR SETUP SOFTWARE
9. Select “Serial” from the Interface drop-down list. This will display a number of interface parameters that must be
entered for proper serial communications.
1
Figure 1–4: CONFIGURING SERIAL COMMUNICATIONS
10. Enter the COM port used by the computer, the baud rate, and parity settings from the front panel
SETUP COMMUNICATIONS SERIAL PORTS menu, and the relay slave address setting from the front panel SETTINGS
PRODUCT SETUP COMMUNICATIONS MODBUS PROTOCOL MODBUS SLAVE ADDRESS menu in their respective
fields.
11. Click the Read Order Code button to connect to the L30 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.
12. Click “OK” when the relay order code has been received. The new device will be 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 RS232 communications. Proceed to the Connecting to the L30 section to
begin communications.
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
set up 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 will use “Location 2” as the site name. Click
the OK button when complete.
5. The new site will appear 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.
). See the Software Installation section for installation details.
SETTINGS PRODUCT
GE Multilin L30 Line Current Differential System 1-9
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1.3 ENERVISTA UR SETUP SOFTWARE 1 GETTING STARTED
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 will display a number of interface parameters that must be
1
entered for proper Ethernet functionality.
Figure 1–5: CONFIGURING ETHERNET COMMUNICATIONS
9. Enter the relay IP address specified in the front panel
WORK IP ADDRESS in the “IP Address” field.
10. Enter the relay slave address and Modbus port address values from the respective settings in the front panel
PRODUCT SETUP COMMUNICATIONS MODBUS PROTOCOL menu.
11. Click the Read Order Code button to connect to the L30 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 will be 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 L30 section to
begin communications.
a) USING QUICK CONNECT VIA THE FRONT PANEL RS232 PORT
Before starting, verify that the serial cable is properly connected from the laptop 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.
SETTINGS PRODUCT SETUP COMMUNICATIONS NET-
SETTINGS
1.3.4 USING THE QUICK CONNECT FEATURE
). See the Software Installation section for installation details.
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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
1
2
3
4
5
6
7
8
3. Click the Quick Connect button to open the Quick Connect dialog box.
4. Select the Serial interface and the correct COM Port, then click Connect.
5. The EnerVista UR Setup software will create a site named “Quick Connect” with a corresponding device also named
“Quick Connect” and display them on the upper-left corner of the screen. Expand the sections to view data directly
from the L30 device.
Each time the EnerVista UR Setup software is initialized, click the Quick Connect button to establish direct communications to the L30. This ensures that configuration of the EnerVista UR Setup software matches the L30 model number.
b) USING QUICK CONNECT VIA THE REAR ETHERNET PORTS
To use the Quick Connect feature to access the L30 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 is displayed.
2. Navigate to the
SETTINGS PRODUCT SETUP COMMUNICATIONS NETWORK IP ADDRESS setting.
3. Enter an IP address of “1.1.1.1” and select the ENTER key to save the value.
4. In the same menu, select the
SUBNET IP MASK setting.
5. Enter a subnet IP address of “255.0.0.0” and press the ENTER key to save the value.
Next, use an Ethernet cross-over cable to connect the computer to the rear Ethernet port. The pinout for an Ethernet cross-
over cable is shown below.
1
Figure 1–6: ETHERNET CROSS-OVER CABLE PIN LAYOUT
Now, assign the computer an IP address compatible with the relay’s IP address.
GE Multilin L30 Line Current Differential System 1-11
Page 22
1.3 ENERVISTA UR SETUP SOFTWARE 1 GETTING STARTED
1. From the Windows desktop, right-click the My Network Places icon and select Properties to open the network connections window.
1
2. Right-click the Local Area Connection icon and select Properties.
3. Select the Internet Protocol (TCP/IP) item from the list provided and click the Properties button.
4. Click on the “Use the following IP address” box.
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1 GETTING STARTED 1.3 ENERVISTA UR SETUP SOFTWARE
5. Enter an IP address with the first three numbers the same as the IP address of the L30 relay and the last number dif-
ferent (in this example, 1.1.1.2).
6. Enter a subnet mask equal to the one set in the L30 (in this example, 255.0.0.0).
7. Click OK to save the values.
Before continuing, it will be necessary to 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:
C:\WINNT>ping 1.1.1.1
3. If the connection is successful, the system will return four replies as follows:
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 will vary depending on local network configuration.
If the following sequence of messages appears when entering the C:\WINNT>ping 1.1.1.1 command:
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 L30 and the laptop computer, and double-check the programmed IP address in
the PRODUCT SETUP COMMUNICATIONS NETWORK IP ADDRESS setting, then repeat step 2 in the above procedure.
If the following sequence of messages appears when entering the C:\WINNT>ping 1.1.1.1 command:
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:
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 L30 and the laptop computer, and double-check the programmed IP address in
PRODUCT SETUP COMMUNICATIONS NETWORK IP ADDRESS setting, then repeat step 2 in the above procedure.
the
If the following sequence of messages appears when entering the
C:\WINNT>ping 1.1.1.1 command:
1
GE Multilin L30 Line Current Differential System 1-13
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1.3 ENERVISTA UR SETUP SOFTWARE 1 GETTING STARTED
Pinging 1.1.1.1 with 32 bytes of data:
1
Destination host unreachable.
Destination host unreachable.
Destination host unreachable.
Destination host unreachable.
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 IP address is programmed in the local PC 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 may be necessary to restart the laptop for the change in IP address to take effect (Windows 98 or NT).
Before using the Quick Connect feature through the Ethernet port, it is necessary to disable any configured proxy settings
in Internet Explorer.
1. Start the Internet Explorer software.
2. Select the Tools > Internet Options menu item and click on 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 L30 relay.
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). See the Software Installation section for installation details.
2. Start the Internet Explorer software.
1-14 L30 Line Current Differential System GE Multilin
Page 25
1 GETTING STARTED 1.3 ENERVISTA UR SETUP SOFTWARE
3. Select the “UR” device from the EnerVista Launchpad to start EnerVista UR Setup.
4. Click the Quick Connect button to open the Quick Connect dialog box.
5. Select the Ethernet interface and enter the IP address assigned to the L30, then click Connect.
6. The EnerVista UR Setup software will create a site named “Quick Connect” with a corresponding device also named
“Quick Connect” and display them on the upper-left corner of the screen. Expand the sections to view data directly
from the L30 device.
Each time the EnerVista UR Setup software is initialized, click the Quick Connect button to establish direct communications to the L30. This ensures that configuration of the EnerVista UR Setup software matches the L30 model number.
When direct communications with the L30 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 con-
nections 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.
4. Set the computer to “Obtain a relay address automatically” as shown below.
1
If this computer is used to connect to the Internet, re-enable any proxy server settings after the laptop has been disconnected from the L30 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 will trigger the software to automatically detect any UR-series
relays located on the network. The EnerVista UR Setup software will then proceed to configure all settings and order code
options in the Device Setup menu, for the purpose of communicating to multiple relays. This feature allows the user to
identify and interrogate all UR-series devices in a particular location.
GE Multilin L30 Line Current Differential System 1-15
Page 26
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 L30 RELAY
1
When unable to connect because of an "ACCESS VIOLATION," access Device Setup and refresh the order code for the
device.
1. Open the Display Properties window through the Site List tree as shown below:
2. The Display Properties window will open with a status indicator on the lower left of the EnerVista UR Setup window.
3. 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.
4. The Display Properties settings can now be edited, printed, or changed according to user specifications.
Refer to chapter 4 in this manual and the EnerVista UR Setup Help File for more information about the using the
EnerVista UR Setup software interface.
QUICK ACTION HOT LINKS
The EnerVista UR Setup software has several new quick action buttons that provide users with instant access to several
functions that are often performed when using L30 relays. From the online window, users can select which relay to interrogate from a pull-down window, then click on the button for the action they wish to perform. The following quick action functions are available:
• View the L30 event record.
• View the last recorded oscillography record.
• View the status of all L30 inputs and outputs.
• View all of the L30 metering values.
• View the L30 protection summary.
• Generate a service report.
1-16 L30 Line Current Differential System GE Multilin
Page 27
1 GETTING STARTED 1.4 UR HARDWARE
EnerVista
Ethernet
10/100 Mbps
Regional
control
center
Modem
Remote
communications link
Local
control
Engineer
GE Multilin F485
communications converter
UR-series IED
Troubleshooting
Commissioning
Setting changes
Reports
RS485 115 kbps
RS232
EnerVista
EnerVista
842759A2.CDR
1.4UR HARDWARE 1.4.1 MOUNTING AND WIRING
Please refer to Chapter 3: Hardware for detailed mounting and wiring instructions. Review all WARNINGS and CAUTIONS
carefully.
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 PC COM1 or COM2 port as described
in the CPU communications ports section of chapter 3.
1
Figure 1–7: RELAY COMMUNICATIONS OPTIONS
To communicate through the L30 rear RS485 port from a PC 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 L30 rear communications port. The converter terminals
(+, –, GND) are connected to the L30 communication module (+, –, COM) terminals. Refer to the CPU communications
ports section in chapter 3 for option details. The line should be terminated with an R-C network (that is, 120 Ω, 1 nF) as
described in the chapter 3.
All messages are displayed on a 2 × 20 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 will default to user-defined messages. Any high
priority event driven message will automatically override the default message and appear on the display.
1.4.3 FACEPLATE DISPLAY
GE Multilin L30 Line Current Differential System 1-17
Page 28
1.5 USING THE RELAY 1 GETTING STARTED
1.5USING THE RELAY 1.5.1 FACEPLATE KEYPAD
1
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 broken down further into logical subgroups.
The MESSAGE keys navigate through the subgroups. The VALUE keys scroll increment or decrement numerical setting
values when in programming mode. These keys also scroll through alphanumeric values in the text edit mode. Alternatively, values may also be entered with the numeric keypad.
The decimal key initiates and advance to the next character in text edit mode or enters a decimal point. The HELP key may
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 the desired 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
SETTINGS
PRODUCT SETUP
SETTINGS
The relay is defaulted to the “Not Programmed” state when it leaves the factory. This safeguards against the installation of
a relay whose settings have not been entered. When powered up successfully, the Trouble LED will be on and the In Service LED off. The relay in the “Not Programmed” state will block signaling of any output relay. These conditions will remain
until the relay is explicitly put in the “Programmed” state.
Select the menu message
SETTINGS PRODUCT SETUP INSTALLATION RELAY SETTINGS
SECURITY
VALUE)
ACCESS LEVEL:
Restricted
1.5.4 RELAY ACTIVATION
RELAY SETTINGS:
Not Programmed
1-18 L30 Line Current Differential System GE Multilin
Page 29
1 GETTING STARTED 1.5 USING THE RELAY
NOTE
To put the relay in the “Programmed” state, press either of the VALUE keys once and then press ENTER. The faceplate
Trouble LED will turn off and the In Service LED will turn on. The settings for the relay can be programmed manually (refer
to Chapter 5) via the faceplate keypad or remotely (refer to the EnerVista UR Setup help file) via the EnerVista UR Setup
software interface.
1.5.5 RELAY PASSWORDS
It is recommended that passwords be set up for each security level and assigned to specific personnel. There are two user
password 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:
• 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.
Refer to the Changing Settings section in Chapter 4 for complete instructions on setting up security level passwords.
1
1.5.6 FLEXLOGIC™ CUSTOMIZATION
FlexLogic™ equation editing is required for setting up user-defined logic for customizing the relay operations. See the FlexLogic™ section in Chapter 5 for additional details.
GE Multilin L30 Line Current Differential System 1-19
Page 30
1.5 USING THE RELAY 1 GETTING STARTED
1.5.7 COMMISSIONING
1
The L30 requires a minimum amount of maintenance when it is commissioned into service. Since the L30 is a microprocessor-based relay, its characteristics do not change over time. As such, no further functional tests are required. Expected service life is 20 years for UR devices manufactured June 2014 or later when applied in a controlled indoors environment and
electrical conditions within specification.
Furthermore, the L30 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 for details). However, it is recommended that L30 maintenance be scheduled
with other system maintenance. This maintenance may involve the 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 during 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 prompt service.
1-20 L30 Line Current Differential System GE Multilin
Page 31
2 PRODUCT DESCRIPTION 2.1 INTRODUCTION
2 PRODUCT DESCRIPTION 2.1INTRODUCTION 2.1.1 OVERVIEW
The L30 Line Current Differential System is a digital current differential relay system with an integral communications channel interface.
The L30 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 L30 are available for application on both two and three terminal lines.
The L30 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 L30 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 L30 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.
The L30 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 L30 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.
The L30 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 L30 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).
Settings and actual values can be accessed from the front panel or EnerVista software.
The following single line diagram illustrates the relay functionality using American National Standards Institute (ANSI)
device numbers.
2
Table 2–1: ANSI DEVICE NUMBERS AND FUNCTIONS
DEVICE
NUMBER
25 Synchrocheck 51N Neutral time overcurrent
27P Phase undervoltage 51P Phase time overcurrent
27X Auxiliary undervoltage 51_2 Negative-sequence time overcurrent
49 Thermal overload protection 52 AC circuit breaker
50BF Breaker failure 59P Phase overvoltage
50DD Current disturbance detector 59X Auxiliary overvoltage
50G Ground instantaneous overcurrent 67N Neutral directional overcurrent
50N Neutral instantaneous overcurrent 67P Phase directional overcurrent
50P Phase instantaneous overcurrent 79 Automatic recloser
50_2 Negative-sequence instantaneous overcurrent 81U Underfrequency
51G Ground time overcurrent 87L Segregated line current differential
FUNCTION DEVICE
NUMBER
FUNCTION
GE Multilin L30 Line Current Differential System 2-1
Page 32
2
831815A4.CDR
L30 Line Differential Relay
52
Monitoring
CLOSE TRIP
Data from/to remote end
(via dedicated communications)
Metering
FlexElement
Transducer
inputs
50N87L
50BF
51_2
51P
50_2
79
50P
27P
27X
59X
59P
25
51G50G
67N67P50DD
81U
59_2
51N 49
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) Setting groups (6)
Contact inputs (up to 96) FlexLogic™ equations Stub bus
Contact outputs (up to 64) IEC 61850 communications (optional) Synchrophasors
Control pushbuttons Channel tests Time synchronization over SNTP
CT failure detector Metering: Current, voltage, power,
Data logger User-definable displays
Digital counters (8) User-programmable LEDs
Digital elements (48) Modbus communications User-programmable pushbuttons
Direct inputs (8 per pilot channel) Modbus user map User-programmable self-tests
Disconnect switches Non-volatile latches Virtual inputs (64)
DNP 3.0 or IEC 60870-5-104 protocol Non-volatile selector switch Virtual outputs (96)
Event recorder Open Pole Detector VT fuse failure
2
t) Fault locator and fault reporting Oscillography
Transducer inputs and outputs
frequency, power factor, 87L
current, local and remote
phasors
2-2 L30 Line Current Differential System GE Multilin
Page 33
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 timestamped phaselets per cycle.
• Adaptive restraint approach improving sensitivity and accuracy of fault sensing.
• 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 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.
• 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.
• Breaker arcing current.
2
GE Multilin L30 Line Current Differential System 2-3
Page 34
2.1 INTRODUCTION 2 PRODUCT DESCRIPTION
NOTE
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:
2
• 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.
• One or two rear RS485 ports: up to 115 kbps.
• 10Base-F Ethernet port supporting the IEC 61850 protocol.
2.1.3 ORDERING
a) OVERVIEW
The L30 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. CPU modules 9G, 9H, 9L, and 9M are obsolete. See
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 HardFiber modules). The order code options are described in the following sub-sections.
2-4 L30 Line Current Differential System GE Multilin
Page 35
2 PRODUCT DESCRIPTION 2.1 INTRODUCTION
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: L30 ORDER CODES (HORIZONTAL UNITS)
BASE UNIT L30||||||||||| |Base Unit
CPU E | | | | | | | | | | | RS485 and RS485
SOFTWARE
(IEC 61850 options
not available with
type E CPUs)
MOUNT/COATING H | | | | | | | | | Horizontal (19” rack)
FACEPLATE/ DISPLAY C | | | | | | | | English display
POWER SUPPLY
(redundant supply must
be same type as main supply)
CT/VT MODULES 8F | | | | | | Standard 4CT/4VT
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)
L30 - * ** - * * * - F ** - H ** - L ** - N ** - S ** - U ** - W/X ** Full Size Horizontal Mount
J | | | | | | | | | | | RS485, multi-mode ST 100Base-FX and 10/100Base-T
K | | | | | | | | | | | RS485, multi-mode ST redundant 100Base-FX and 10/100Base-T
N | | | | | | | | | | | R S485 and 10/100Base-T
S | | | | | | | | | | | RS485 and six-port managed Ethernet switch
00 | | | | | | | | | | No software options
03 | | | | | | | | | | IEC 61850
06 | | | | | | | | | | One phasor measurement unit (PMU)
07 | | | | | | | | | | IEC 61850 and one phasor measurement unit (PMU)
18 | | | | | | | | | | Synchrocheck and three-pole autoreclose
19 | | | | | | | | | | Synchrocheck, three-pole autoreclose, and one phasor measurement unit (PMU)
24 | | | | | | | | | | In-zone transformer protection
25 | | | | | | | | | | In-zone transformer protection and IEC 61850
26 | | | | | | | | | | In-zone transformer protection and one phasor measurement unit (PMU)
27 | | | | | | | | | | In-zone transformer protection, IEC 61850, and one phasor measurement unit ( PMU)
A | | | | | | | | | Horizontal (19” rack) with harsh envir onmental 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 pushbutton s
H | | | | | | | 125 / 250 V AC/DC power supply
H | | | | | | RH 125 / 250 V AC/DC with redundant 1 25 / 250 V AC/DC power supply
L | | | | | | | 24 to 48 V (DC only) power supply
L | | | | | | RL 24 to 48 V (DC only) with redundant 24 to 48 V DC power supply
8H | | | | | | Standard 8CT
8L | | | | | | Standard 4CT/4VT with enhanced diagnostics (required for PMU option)
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) ou tputs, 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, 1 Form-A latching output, 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 2A C37.94SM, 1300nm single-mode, ELED, 1 channel single-mode
2B 2B C37.94SM, 1300nm single-mode, ELED, 2 channel single-mode
2E 2E Bi-phase, single channel
2F 2F Bi-phase, dual channel
2G 2G IEEE C37.94, 820 nm, 128 kbps, multimode, LED, 1 Channel
2H 2H IEEE C37.94, 820 nm, 128 kbps, multimode, LED, 2 Channels
| 2S Six-port managed Ethernet switch with high voltage supply (110 to 250 V DC / 100 to 240 V AC)
| 2T Six-port managed Ethernet switch with low voltage supply (48 V DC)
72 72 1550 nm, single-mode, LASER, 1 Channel
73 73 1550 nm, single-mode, LASER, 2 Channel
74 74 Channel 1 - RS422; Channel 2 - 1550 nm, single-mode, LASER
75 75 Channel 1 - G.703; Channel 2 - 1550 nm, Single-mode LASER
76 76 IEEE C37.94, 820 nm, 64 kbps, multimode, LED, 1 Channel
77 77 IEEE C37.94, 820 nm, 64 kbps, multimode, LED, 2 Channels
7A 7A 820 nm, multi-mode, LED, 1 Channel
7B 7B 1300 nm, multi-mode, LED, 1 Channel
7C 7C 1300 nm, single-mode, ELED, 1 Channel
7D 7D 1300 nm, single-mode, LASER, 1 Channel
7E 7E Channel 1 - G.703; Channel 2 - 820 nm, multi-mode
7F 7F Channel 1 - G.703; Channel 2 - 1300 nm, multi-mode
7G 7G Channel 1 - G.703; Channel 2 - 1300 nm, single-mode ELED
7H 7H 820 nm, multi-mode, LED, 2 Channels
7I 7I 1300 nm, multi-mode, LED, 2 Channels
7J 7J 1300 nm, single-mode, ELED, 2 Channels
7K 7K 1300 nm, single-mode, LASER, 2 Channels
7L 7L Channel 1 - RS422; Channel 2 - 820 nm, multi-mode, LED
7M 7M Channel 1 - RS422; Channel 2 - 1300 nm, multi-mode, LED
7N 7N Channel 1 - RS422; Channel 2 - 1300 nm, single-mode, ELED
7P 7P Channel 1 - RS422; Channel 2 - 1300 nm, single-mode, LASE R
7Q 7Q Channel 1 - G.703; Channel 2 - 1300 nm, single-mode LASER
7R 7R G.703, 1 Channel
7S 7S G.703, 2 Channels
7T 7T RS422, 1 Channel
7V 7V RS422, 2 Channels, 2 Clock Inputs
7W 7W RS422, 2 Channels
2
GE Multilin L30 Line Current Differential System 2-5
Page 36
2.1 INTRODUCTION 2 PRODUCT DESCRIPTION
The order codes for the reduced size vertical mount units with traditional CTs and VTs are shown below.
Table 2–4: L30 ORDER CODES (REDUCED SIZE VERTICAL UNITS)
BASE UNIT L30 | | | | | | | | | | Base Unit
CPU E | | | | | | | | | RS485 and RS485
SOFTWARE
(IEC 61850 options
not available with
type E CPUs)
2
MOUNT/COATING V | | | | | | | Vertical (3/4 rack)
FACEPLATE/ DISPLAY F | | | | | | English display
POWER SUPPLY H | | | | | 125 / 250 V AC/DC power supply
CT/VT MODULES 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)
L30 - * ** - * * * - F ** - H ** - L ** - N ** - R ** Reduced Size Vertical Mount
J | | | | | | | | | RS485, mult i-mode ST 100Base-FX and 10/100Base-T
K | | | | | | | | | RS485, multi-mode ST redundant 100Base-FX and 10/100Base-T
N | | | | | | | | | RS485 and 10/100Base-T
00 | | | | | | | | No software options
03 | | | | | | | | IEC 61850
06 | | | | | | | | Phasor measurement unit (PMU)
07 | | | | | | | | IEC 61850 and phasor measurement unit (PMU)
18 | | | | | | | | Synchrocheck and three-pole autoreclose
19 | | | | | | | | Synchrocheck, three-pole autoreclose, and one phasor measurement unit (PMU)
24 | | | | | | | | In-zone transformer protection
25 | | | | | | | | In-zone transformer protection and IEC 61850
26 | | | | | | | | In-zone transformer protection and one phasor measurement unit (PMU)
27 | | | | | | | | In-zone transformer protection, IEC 61850, and one phasor measurement unit (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 fron t 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
L | | | | | 24 to 48 V (DC only) power supply
8H | | | | Standard 8CT
8L | | | | Standard 4CT/4VT with enhanced diagnostics (required for PMU option)
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 outputs
4C 4C 4C | 4 Solid-State (current with optional voltage) MOSFET outputs
4D 4D 4D | 16 digital inputs with Auto-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 optional current) and 2 Form-C outputs, 8 digital inputs
6B 6B 6B | 2 Form-A (voltage with optional current) and 4 Form-C outputs, 4 digital inputs
6C 6C 6C | 8 Form-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 Form-A (voltage with optional current) outp uts, 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 Form-C outputs, 4 digital inputs
6N 6N 6N | 4 Form-A (current with optional voltage) outp uts, 8 digital inputs
6P 6P 6P | 6 Form-A (current with optional voltage) outputs, 4 digital inputs
6R 6R 6R | 2 Form-A (no monitoring) and 2 Form-C outputs, 8 digi tal inputs
6S 6S 6S | 2 Form-A (no monitoring) and 4 Form-C outputs, 4 digital inputs
6T 6T 6T | 4 Form-A (no monitoring) outputs, 8 digital inputs
6U 6U 6U | 6 Form-A (no monitoring) outputs, 4 digital inputs
6V 6V 6V | 2 Form-A outputs, 1 Form-C output, 1 Form-A latching output, 8 digital inputs
5A 5A 5A | 4 DCmA inputs, 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
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
2G IEE E C37.94, 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, 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 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
2-6 L30 Line Current Differential System GE Multilin
Page 37
2 PRODUCT DESCRIPTION 2.1 INTRODUCTION
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: L30 ORDER CODES (HORIZONTAL UNITS WITH PROCESS BUS)
BASE UNIT L30||||||||||| |Base Unit
CPU E | | | | | | | | | | | RS485 and RS485
SOFTWARE
(IEC 61850 options
not available with
type E CPUs)
MOUNT/COATING H | | | | | | | | | Horizontal (19” rack)
FACEPLATE/ DISPLAY C | | | | | | | | English display
POWER SUPPLY
(redundant supply must
be same type as main supply)
PROCESS BUS MODULE | 81 | | | | | Eight-port digital process bus module
DIGITAL INPUTS/OUTPUTS XX XX XX XX XX XX No Module
INTER-RELAY
COMMUNICATIONS
(select a maximum of 1 per unit)
L30 - * ** - * * * - F ** - H ** - L ** - N ** - S ** - U ** - W/X ** Full Size Horizontal Mount
J | | | | | | | | | | | RS485, multi-mode ST 100Base-FX and 10/100Base-T
K | | | | | | | | | | | RS485, multi-mode ST redundant 100Base-FX and 10/100Base-T
N | | | | | | | | | | | R S485 and 10/100Base-T
S | | | | | | | | | | | RS485 and 6-port managed Ethernet Switch
00 | | | | | | | | | | No software options
03 | | | | | | | | | | IEC 61850
06 | | | | | | | | | | One phasor measurement unit (PMU)
07 | | | | | | | | | | IEC 61850 and one phasor measurement unit (PMU)
18 | | | | | | | | | | Synchrocheck and three-pole autoreclose
19 | | | | | | | | | | Synchrocheck, three-pole autoreclose, and one phasor measurement unit (PMU)
24 | | | | | | | | | | In-zone transformer protection
25 | | | | | | | | | | In-zone transformer protection and IEC 61850
26 | | | | | | | | | | In-zone transformer protection and one phasor measurement unit (PMU)
27 | | | | | | | | | | In-zone transformer protection, IEC 61850, and one phasor measurement unit ( PMU)
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 push buttons
T | | | | | | | | Enhanced front panel with Russian display and user-programmable pushbuttons
V | | | | | | | | Enhanced front panel with Chinese display and user-pr ogrammable pushbuttons
W | | | | | | | | Enhanced front panel with Turkish display
Y | | | | | | | | Enhanced front panel with Turkish display and user-programmable pushbutton s
H | | | | | | | 125 / 250 V AC/DC power supply
H | | | | | | RH 125 / 250 V AC/DC with redundant 1 25 / 250 V AC/DC power supply
L | | | | | | | 24 to 48 V (DC only) power supply
L | | | | | | RL 24 to 48 V (DC only) with redundant 24 to 48 V DC power supply
4A 4A | | 4 Solid-State (no monitoring) MOSFET outputs
4B 4B | | 4 Solid-State (voltage with optional current) MOSFET outputs
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) Latching outputs
67 67 | | 8 Form-A (no monitoring) outputs
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 digital 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) ou tputs, 4 digital inputs
6K 6K | | 4 Form-C and 4 Fast Form-C outputs
6L 6L | | 2 Form-A (current with optional voltage) an d 2 Form-C outputs, 8 digital inputs
6M 6M | | 2 Form-A (current with optional voltage) and 4 Form-C outputs, 4 digital inputs
6N 6N | | 4 Form-A (current with optional voltage) ou tputs, 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 F orm-C outputs, 8 digital 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, 1 Form-A latching output, 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
2G IE EE C37.94, 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, singl e-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, mult i-mode, LED
7M Channel 1 - RS422; C hannel 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
GE Multilin L30 Line Current Differential System 2-7
Page 38
2.1 INTRODUCTION 2 PRODUCT DESCRIPTION
The order codes for the reduced size vertical mount units with the process bus module are shown below.
Table 2–6: L30 ORDER CODES (REDUCED SIZE VERTICAL UNITS WITH PROCESS BUS)
BASE UNIT L30 | | | | | | | | | | Base Unit
CPU E | | | | | | | | | RS485 and RS485
SOFTWARE
(IEC 61850 options
not available with
type E CPUs)
2
MOUNT/COATING V | | | | | | | Vertical (3/4 rack)
FACEPLATE/ DISPLAY F | | | | | | English display
POWER SUPPLY H | | | | | 125 / 250 V AC/DC power supply
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)
L30 - * ** - * * * - F ** - H ** - L ** - N ** - R ** Reduced Size Vertical Mount
J | | | | | | | | | RS485, mult i-mode ST 100Base-FX and 10/100Base-T
K | | | | | | | | | RS485, multi-mode ST redundant 100Base-FX and 10/100Base-T
N | | | | | | | | | RS485 and 10/100Base-T
00 | | | | | | | | No software options
03 | | | | | | | | IEC 61850
06 | | | | | | | | Phasor measurement unit (PMU)
07 | | | | | | | | IEC 61850 and phasor measurement unit (PMU)
18 | | | | | | | | Synchrocheck and three-pole autoreclose
19 | | | | | | | | Synchrocheck, three-pole autoreclose, IEC 61850, and one phasor measurement unit (PMU)
24 | | | | | | | | In-zone transformer protection
25 | | | | | | | | In-zone transformer protection and IEC 61850
26 | | | | | | | | In-zone transformer protection and and one phasor measurement unit (PMU)
27 | | | | | | | | In-zone transformer protection, IEC 61850, and one phasor measurement unit (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 fron t 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
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 Form-A (no monitoring) 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 dig ital 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 cur rent) 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 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) 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) out puts, 4 digital inputs
6V | 2 Form-A outputs, 1 Form-C output, 1 Form-A latching output, 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
2G IEE E C37.94, 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, 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 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
2-8 L30 Line Current Differential System GE Multilin
Page 39
2 PRODUCT DESCRIPTION 2.1 INTRODUCTION
NOTE
NOTE
2.1.4 REPLACEMENT MODULES
Replacement modules can be ordered separately as shown below. When ordering a replacement CPU module or faceplate, please provide the serial number of your existing unit.
Not all replacement modules may be applicable to the L30 relay. Only the modules specified in the order codes are
available as replacement modules.
Replacement module codes are subject to change without notice. CPU modules 9G, 9H, 9L, and 9M are obsolete.
See http://www.gedigitalenergy.com/multilin/order.htm
for the latest ordering options.
The replacement module order codes for the horizontal mount units are shown below.
2
Table 2–7: ORDER CODES FOR REPLACEMENT MODULES, HORIZONTAL UNITS
POWER SUPPLY
(redundant supply only available in horizontal units;
and must be same type as main supply) (for redundant
supply, must swap both power supplies when
switching from RH to SH)
CPU | 9E | RS485 and RS485 (Modbu s RTU, DNP 3.0)
FACEPLATE/DISPLAY | 3C | Horizontal faceplate with keypad and English display
DIGITAL INPUTS AND OUTPUTS | 4A | 4 Solid-State (no monitoring) MOSFET outputs
CT/VT
MODULES
(NOT AVAILABLE FOR THE C30)
INTER-RELAY COMMUNICATIONS | 2A | C37.94SM, 1300nm single-mode, ELED, 1 channel single-mode
UR - ** - *
| 1H | 125 / 250 V AC/DC
| 1L | 24 to 48 V (DC only)
| SH A 125 / 300 V AC/D C
| RL H 24 to 48 V (DC only)
| 9J | RS485, multi-mode ST 100Base-FX and 10/100Base-T (Ethernet, Modbus TCP/IP, DNP 3.0)
| 9K | RS485, multi-mode ST redundant 100Base-FX and 10/100Base-T (Ethernet, Modbus TCP/IP, DNP 3.0)
| 9N | RS485 and 10/100Base-T
| 9S | RS485 and six-port managed Ethernet switch
| 3D | Horizontal faceplate with keypad and French display
| 3R | Horizontal faceplate with keypad and Russian display
| 3A | Horizontal faceplate with keypad and Chinese display
| 3P | Horizontal faceplate with keypad, user-p rogrammable 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 with keypad, user-p rogrammable 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 outputs
| 4D | 16 digital inputs with Auto-Burnishi ng
| 4L | 14 Form-A (no monitoring) 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 with opt ional 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 optional 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 moni toring) 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 moni toring) 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 | Sensitive 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 C37.94, 820 nm, 128 kbps, multimode, LED, 1 Channel
| 2H | IEEE C37.94, 820 nm, 128 kbps, multimode, LED, 2 Channels
| 2S | Six-port managed Ethernet switch with high voltage power supply (110 to 250 V DC / 100 to 240 V AC)
| 2T | Six-port managed Ethernet switch with low voltage power supply (48 V DC)
| 72 | 1550 nm, single- mode, LASER, 1 Channel
| 73 | 1550 nm, single- mode, LASER, 2 Channel
| 74 | Channel 1 - R S422; 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, 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 - R S422; 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
| 7W | RS422, 2 Channels
GE Multilin L30 Line Current Differential System 2-9
Page 40
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 | SH B 125 / 300 V AC/DC
CPU | 9E | RS485 and RS485 (Modbu s RTU, DNP 3.0)
FACEPLATE/DISPLAY | 3F | Vertical faceplate with keypad and English display
2
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
UR - ** - *
| 1L | 24 to 48 V (DC only)
| 9J | RS485, multi-mode ST 100Base-FX and 10/100Base-T (Ethernet, Modbus TCP/IP, DNP 3.0)
| 9K | RS485, multi-mode ST redundant 100Base-FX and 10/100Base-T (Ethernet, Modbus TCP/IP, DNP 3.0)
| 9N | RS485 and 10/100Base-T
| 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 outputs
| 4D | 16 digital inputs with Auto-Burnishi ng
| 4L | 14 Form-A (no monitoring) 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 with opt ional 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 optional 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 moni toring) 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 moni toring) 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 | Sensitive 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 C37.94, 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 - R S422; 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 - R S422; 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
| 7W | RS422, 2 Channels
2-10 L30 Line Current Differential System GE Multilin
Page 41
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. L30 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
L30 relay with two bidirectional channels. The second bidirectional channel will provide a redundant backup channel with
automatic switchover if the first channel fails.
The L30 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 will 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 L30 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 L30 relay must have live communications to all other terminals in the current differential scheme; the
other L30 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 L30 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
L30 relay cannot calculate the differential current. When a master L30 relay issues a local trip signal, it also sends a direct
transfer trip (DTT) signal to all of the other L30 relays on the protected line.
If a slave L30 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 L30 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 L30 relays.
• Performs all local relaying functions.
• Receives current differential DTT and Direct Input signals from all other L30 relays.
• Transmits direct output signals to all communicating relays.
• Sends synchronization information of local clock to all other L30 clocks.
2
GE Multilin L30 Line Current Differential System 2-11
Page 42
2.2 PILOT CHANNEL RELAYING 2 PRODUCT DESCRIPTION
IED-1
IED-1
IED-2
IED-2
IED-3
CHn
CHn
CHn
CHn
CHn
CHn
CHn
CHn
CHn
CHn
Rx
Rx
Optional redundant channel
Typical two-terminal application
Typical three-terminal application
Rx
Rx
Rx
Rx
Rx
Rx
Rx
Rx
Tx
Tx
Tx
Tx
Tx
Tx
Tx
Tx
Tx
Tx
831009A5.CDR
The master L30 relay performs the following functions:
• Performs all functions of a slave L30.
• Receives current phasor information from all relays.
• Performs the current differential algorithm.
• Sends a current differential DTT signal to all L30 relays on the protected line.
In the peer-to-peer mode, all L30 relays act as masters.
2
2.2.2 CHANNEL MONITOR
Figure 2–2: COMMUNICATIONS PATHS
The L30 has logic to detect that the communications channel is deteriorating or has failed completely. This can provide an
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.
2-12 L30 Line Current Differential System GE Multilin
Page 43
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 L30 includes provision for sending and receiving a single-pole direct transfer trip (DTT) signal from current differential
protection between the L30 relays at the line terminals using the pilot communications channel. The user may also initiate
an additional eight pilot signals with an L30 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.
2
GE Multilin L30 Line Current Differential System 2-13
Page 44
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 L30 Line Current Differential System
are based on the Fourier transform phaselet approach and an adaptive statistical restraint. The L30 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.
2
• Backup protection: In addition to the primary current differential protection, the L30 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-
2-14 L30 Line Current Differential System GE Multilin
Page 45
2 PRODUCT DESCRIPTION 2.3 FUNCTIONALITY
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.
2
GE Multilin L30 Line Current Differential System 2-15
Page 46
2.3 FUNCTIONALITY 2 PRODUCT DESCRIPTION
831732A3.CDR
I
V
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
dV
dt
d) FUNCTION DIAGRAMS
2
Figure 2–3: L30 BLOCK DIAGRAM
2-16 L30 Line Current Differential System GE Multilin
Page 47
2 PRODUCT DESCRIPTION 2.3 FUNCTIONALITY
831749A1.CDR
Peer
Clock
Time Stamp
Sampling
Control
Raw
Sample
Time
Stamps
Phase
Deviation
Frequency
Deviation
Compute
Frequency
Deviation
Sample
Currents and
Voltages
Compute
Phaselets
Disturbance
Detector
Trip Output
Logic
Fault
Detector
Phaselets
Phaselets
Phasors
Phaselets
Compute Positive
Sequence
Currents
Align Phaselets
Compute Phasors and
Variance Parameters
Remove Decaying
Offset and
Charging Current
Clock
Control
Ping-pong
Algorithm
Estimate
Phase Angle
Uncertainties
Peer
Communication
Channel
Control
Phase Deviation
Estimate Phase
Angle Correction
from GPS signal
2
Figure 2–4: MAIN SOFTWARE MODULES
GE Multilin L30 Line Current Differential System 2-17
Page 48
2.4 SPECIFICATIONS 2 PRODUCT DESCRIPTION
NOTE
2.4SPECIFICATIONS 2.4.1 PROTECTION ELEMENTS
The operating times below 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. This should be taken 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.
LINE CURRENT DIFFERENTIAL (87L)
Application: 2 or 3 terminal line, series compensated
2
Characteristic: Dual slope percent differential
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
Level accuracy: ±3% of reading of the maximum circuit
DTT: Direct Transfer Trip (1 and 3 pole) to
Operating Time: 1.0 to 1.5 power cycles duration
Asymmetrical channel delay compensation using GPS:
In-zone transformer group compensation: 0 to 330° in steps of 30°
Inrush inhibit level: 1.0 to 40.0%f
Inrush inhibit mode: per-phase, 2-out-of-3, average
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
87LG operate time: 1.5 to 2.5 cycles
line, tapped line, with charging current
compensation
current
remote L90
asymmetry up to 10 ms
in steps of 0.1
0
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:
0.1 to 2.0 × CT: ±0.5% of reading or ±0.4% of rated
(whichever is greater)
> 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)
Timing accuracy: Operate at > 1.03 × actual pickup
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
±3.5% of operate time or ±½ cycle
(whichever is greater)
2
t; FlexCurves™
Voltage restraint: Modifies pickup current for voltage in
the range of 0.1<V<0.9 VT Nominal in a
fixed linear relationship
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
(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: <16 ms at 3 × pickup at 60 Hz
Timing accuracy: Operate at 1.5 × pickup
(Phase/Ground IOC)
<20 ms at 3 × pickup at 60 Hz
(Neutral IOC)
±3% or ±4 ms (whichever is greater)
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
±1.5% of reading > 2.0 x CT rating
Curve shapes: IEEE Moderately/Very/Extremely
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)
Curve multiplier (Time dial): 0.00 to 600.00 in steps of 0.01
Reset type: Instantaneous/Timed (per IEEE) and Lin-
ear
Timing accuracy: Operate at > 1.03 × actual pickup
±3.5% of operate time or ±½ cycle
(whichever is greater)
2
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
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
Timing accuracy: Operate at 1.5 × pickup
or ±0.4% of rated (whichever is greater);
> 2.0 × CT rating: ±1.5% of reading
±3% or ±4 ms (whichever is greater)
2-18 L30 Line Current Differential System GE Multilin
Page 49
2 PRODUCT DESCRIPTION 2.4 SPECIFICATIONS
PHASE DIRECTIONAL OVERCURRENT
Relay connection: 90° (quadrature)
Quadrature voltage: ABC phase seq.: phase A (V
B (V
), phase C (VAB); ACB phase
CA
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
BA
CB
)
), phase B (VAC),
), phase
BC
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 Ω 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
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
Timing accuracy: Operate at < 0.90 × pickup
±3.5% of operate time or ±4 ms (which-
ever is greater)
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
Timing accuracy: ±3% of operate time or ±4 ms
(whichever is greater)
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
Timing accuracy: ±3% or ±4 ms (whichever is greater)
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
Timing accuracy: ±3% of operate time or ±4 ms
(whichever is greater)
Operate time: < 30 ms at 1.10 × pickup at 60 Hz
NEGATIVE SEQUENCE OVERVOLTAGE
Pickup level: 0.000 to 1.250 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
Time accuracy: ±3% or ±20 ms, 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% or 4 ms, 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.
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
2
GE Multilin L30 Line Current Differential System 2-19
Page 50
2.4 SPECIFICATIONS 2 PRODUCT DESCRIPTION
BREAKER ARCING CURRENT
Principle: accumulates breaker duty (I2t) and mea-
sures fault duration
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
2
Availability: 1 per CT bank with a minimum of 2
Logic™ operand
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
Single breaker applications, 3-pole tripping schemes
Up to 4 reclose attempts before lockout
Independent dead time setting before each shot
Possibility of changing protection settings after each shot with
FlexLogic™
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
Timing accuracy (cold curve): ±100 ms or 2%, whichever is
greater
Timing accuracy (hot curve): ±500 ms or 2%, whichever is greater
< 0.9 × k × Ib and I / (k × Ib) > 1.1
for I
p
TRIP BUS (TRIP WITHOUT FLEXLOGIC™)
Number of elements: 6
Number of inputs: 16
Operate time: <2 ms at 60 Hz
Time accuracy: ±3% or 10 ms, whichever is greater
2.4.2 USER-PROGRAMMABLE ELEMENTS
FLEXLOGIC™
Programming language: Reverse Polish Notation with graphical
visualization (keypad programmable)
Lines of code: 512
Internal variables: 64
Supported operations: NOT, XOR, OR (2 to 16 inputs), AND (2
to 16 inputs), NOR (2 to 16 inputs),
NAND (2 to 16 inputs), latch (reset-domi-
nant), edge detectors, timers
Inputs: any logical variable, contact, or virtual
input
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
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
under 16 Modbus addresses
Programmability: any logical variable, contact, or virtual
input
FLEXELEMENTS™
Number of elements: 8
Operating signal: any analog actual value, or two values in
differential mode
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
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-
tual input
Reset mode: self-reset or latched
2-20 L30 Line Current Differential System GE Multilin
Page 51
2 PRODUCT DESCRIPTION 2.4 SPECIFICATIONS
LED TEST
Initiation: from any digital input or user-program-
mable condition
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
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
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
2
OSCILLOGRAPHY
Maximum records: 64
Sampling rate: 64 samples per power cycle
Triggers: any element pickup, dropout, or operate;
digital input change of state; digital output 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 output 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
GE Multilin L30 Line Current Differential System 2-21
Page 52
2.4 SPECIFICATIONS 2 PRODUCT DESCRIPTION
FAULT LOCATOR
Number of independent fault locators: 1 per CT bank
Method: single-ended
Voltage source: wye-connected VTs, delta-connected
VTs and neutral voltage, delta-connected
VTs and zero-sequence current (approximation)
Maximum accuracy if: fault resistance is zero or fault currents
2
Relay accuracy: ±1.5% (V > 10 V, I > 0.1 pu)
Worst-case accuracy:
+ user data
VT
%error
+ user data
CT
%error
Z
Line%error
METHOD
RELAY ACCURACY
+ user data
+ see chapter 8
%error
from all line terminals are in phase
+ (1.5%)
%error
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: ±1.0% of reading at
–0.8 < PF ≤ –1.0 and 0.8 < PF ≤ 1.0
PHASOR MEASUREMENT UNIT
Output format: per IEEE C37.118 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
Number of clients: One over TCP/IP port, two over UDP/IP
ports
AC ranges: As indicated in appropriate specifications
sections
Network reporting format: 16-bit integer or 32-bit IEEE floating
point numbers
Network reporting style: rectangular (real and imaginary) or polar
(magnitude and angle) coordinates
Post-filtering: none, 3-point, 5-point, 7-point
Calibration: ±5°
2.4.4 METERING
REACTIVE POWER (VARS)
Accuracy: ±1.0% of reading at –0.2 ≤ PF ≤ 0.2
APPARENT POWER (VA)
Accuracy: ±1.0% of reading
FREQUENCY
Accuracy at
V = 0.8 to 1.2 pu: ±0.01 Hz (when voltage signal is used
for frequency measurement)
I = 0.1 to 0.25 pu: ±0.05 Hz
I > 0.25 pu: ±0.02 Hz (when current signal is used for
frequency measurement)
AC CURRENT
CT rated primary: 1 to 50000 A
CT rated secondary: 1 A or 5 A by connection
Nominal frequency: 20 to 65 Hz
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
Short circuit rating:150000 RMS symmetrical amperes, 250 V maximum (primary current to external CT)
2.4.5 INPUTS
AC VOLTAGE
VT rated secondary: 50.0 to 240.0 V
VT ratio: 1.00 to 24000.00
Nominal frequency: 20 to 65 Hz; the nominal system fre-
quency should be chosen as 50 Hz or
60 Hz only.
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
CONTACT INPUTS
Dry contacts: 1000 Ω 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:4 mA (when energized)
2-22 L30 Line Current Differential System GE Multilin
Page 53
2 PRODUCT DESCRIPTION 2.4 SPECIFICATIONS
CONTACT INPUTS WITH AUTO-BURNISHING
Dry contacts: 1000 Ω 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:4 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 Ω ±10%
Conversion range: –1 to + 20 mA DC
Accuracy: ±0.2% of full scale
Type: Passive
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
RTD INPUTS
Types (3-wire): 100 Ω Platinum, 100 & 120 Ω Nickel, 10
Ω 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
Input impedance: 22 kΩ
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
2.4.6 POWER SUPPLY
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
2.4.7 OUTPUTS
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 IEC 61810-1):
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
GE Multilin L30 Line Current Differential System 2-23
Page 54
2.4 SPECIFICATIONS 2 PRODUCT DESCRIPTION
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
2
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 KΩ 50 KΩ
120 V DC 5 KΩ 2 KΩ
48 V DC 2 KΩ 2 KΩ
24 V DC 2 KΩ 2 KΩ
Note: values for 24 V and 48 V are the same due to a
required 95% voltage drop across the load impedance.
2 W RESISTOR 1 W RESISTOR
IMPEDANCE
Operate time: < 0.6 ms
Internal Limiting Resistor: 100 Ω, 2 W
SOLID-STATE OUTPUT RELAY
Operate and release time: <100 μs
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:
UL508 Utility
Operations/
interval
Break
capability
(0 to 250 V
DC)
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
Industrial
application
10000 ops /
0.2 s-On,
30 s-Off
10 A
L/R = 40 ms
IRIG-B OUTPUT
Amplitude: 10 V peak-peak RS485 level
Maximum load: 100 ohms
Time delay: 1 ms for AM input
40 μs for DC-shift input
Isolation: 2 kV
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 kΩ for –1 to 1 mA range
12 kΩ for 0 to 1 mA range
600 Ω 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
ETHERNET SWITCH (HIGH VOLTAGE, TYPE 2S)
Nominal DC voltage: 110 to 240 V DC
Minimum DC voltage: 88 V DC
Maximum DC voltage: 300 V DC
Input Current: 0.9 A DC maximum
Nominal AC voltage: 100 to 240 V AC, 0.26 to 0.16 A/26 to 39
VA at 50/60 Hz
Minimum AC voltage: 85 V AC, 0.31 A/22 VA at 50/60 Hz
Maximum AC voltage: 265 V AC, 0.16 A/42 VA at 50/60 Hz
Internal fuse: 3 A / 350 V AC, Ceramic, Axial SLO
BLO;
Manufacturer: Conquer; Part number:
SCD-A 003
ETHERNET SWITCH (LOW VOLTAGE, TYPE 2T)
Nominal voltage: 48 V DC, 0.31 A/15 W
Minimum voltage: 30 V DC, 0.43 A/16 W
Maximum voltage: 60 V DC
Internal fuse: 5 A / 350 V AC, Ceramic, Axial SLO
BLO;
Manufacturer: Conquer; Part number:
SCD-A 005
2-24 L30 Line Current Differential System GE Multilin
Page 55
2 PRODUCT DESCRIPTION 2.4 SPECIFICATIONS
OPB P
TMIN()PRMIN()
–=
Total insertion loss number of connectors 0.5 dB×=
2 0.5 dB×= 1.0 dB=
OPB
WORST
OPB 1 dB (LED aging)– total insertion loss–=
10dB 1dB– 1dB– 8 dB=
Maximum fiber length
OPB
WORST
(in dB)
cable loss (in dB/km)
-------------------------------------------------------
=
8 dB
2.8 dB/km
---------------------------
= 2.8km=
2.4.8 COMMUNICATION PROTOCOLS
RS232
Front port: 19.2 kbps, Modbus® RTU
RS485
1 or 2 rear ports: Up to 115 kbps, Modbus® RTU, DNP 3
Typical distance: 1200 m
Isolation: 2 kV, isolated together at 36 Vpk
ETHERNET (FIBER)
PARAMETER FIBER TYPE
10MB MULTI-
MODE
Wavelength 820 nm 1310 nm 1310 nm
Connector ST ST SC
Transmit power –20 dBm –20 dBm –15 dBm
Receiver sensitivity –30 dBm –30 dBm –30 dBm
Power budget 10 dB 10 dB 15 dB
Maximum input
power
Typical distance 1.65 km 2 km 15 km
Duplex full/half full/half full/half
Redundancy yes yes yes
–7.6 dBm –14 dBm –7 dBm
100MB MULTI-
MODE
100MB SINGLE-
MODE
The UR-2S and UR-2T only support 100 Mb multimode
ETHERNET (10/100 MB TWISTED PAIR)
Modes: 10 MB, 10/100 MB (auto-detect)
Connector: RJ45
SNTP clock synchronization error: <10 ms (typical)
ETHERNET SWITCH FIBER OPTIC PORTS
Maximum fiber segment length calculation:
The maximum fiber segment length between two adjacent
switches or between a switch and a device is calculated as follows. First, calculate the optical power budget (OPB) of each
device using the manufacturer’s data sheets.
where OPB = optical power budget, P
and P
= receiver sensitivity.
R
The worst case optical power budget (OPB
lated by taking the lower of the two calculated power budgets, subtracting 1 dB for LED aging, and then subtracting the total insertion
loss. The total insertion loss is calculated by multiplying the number of connectors in each single fiber path by 0.5 dB. For example,
with a single fiber cable between the two devices, there will be a
minimum of two connections in either transmit or receive fiber
paths for a total insertion loss of 1db for either direction:
The worst-case optical power budget between two type 2T or 2S
modules using a single fiber cable is:
To calculate the maximum fiber length, divide the worst-case optical power budget by the cable attenuation per unit distance specified in the manufacturer data sheets. For example, typical
attenuation for 62.5/125 μm glass fiber optic cable is approxi-
mately 2.8 dB per km. In our example, this would result in the following maximum fiber length:
= transmitter output power,
T
) is then calcu-
WORST
2
The customer must use the attenuation specified within the manufacturer data sheets for accurate calculation of the maximum fiber
length.
ETHERNET SWITCH 10/100BASE-T PORTS
Connector type: RJ45
MAXIMUM 10 MBPS ETHERNET SEGMENT LENGTHS
Unshielded twisted pair: 100 m (328 ft.)
Shielded twisted pair: 150 m (492 ft.)
MAXIMUM STANDARD FAST ETHERNET SEGMENT LENGTHS
10Base-T (CAT 3, 4, 5 UTP): 100 m (328 ft.)
100Base-TX (CAT 5 UTP):100 m (328 ft.)
Shielded twisted pair: 150 m (492 ft.)
OTHER
TFTP, HTTP, IEC 60870-5-104, Ethernet Global Data (EGD)
GE Multilin L30 Line Current Differential System 2-25
Page 56
2.4 SPECIFICATIONS 2 PRODUCT DESCRIPTION
NOTE
NOTE
NOTE
NOTE
2.4.9 INTER-RELAY COMMUNICATIONS
SHIELDED TWISTED-PAIR INTERFACE OPTIONS
INTERFACE TYPE TYPICAL DISTANCE
RS422 1200 m
G.703 100 m
2
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
These power budgets are calculated from the manufacturer’s worst-case transmitter power and worst
case receiver sensitivity.
The power budgets for the 1300nm ELED are calculated from the manufacturer's transmitter power and
receiver sensitivity at ambient temperature. At
extreme temperatures these values will deviate
based on component tolerance. On average, the output power will decrease 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
POWER
BUDGET
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 μm ST 1.65 km
50/125 μm ST 1.65 km
62.5/125 μmST 4 km
50/125 μmST 4 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
will 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 may be
impaired at temperatures less than –
20°C
HUMIDITY
Humidity: operating up to 95% (non-condensing) at
55°C (as per IEC60068-2-30 variant 1,
6days).
OTHER
Altitude: 2000 m (maximum)
Pollution degree: II
Overvoltage category: II
Ingress protection: IP20 front, IP10 back
Noise 0 dB
2-26 L30 Line Current Differential System GE Multilin
Page 57
2 PRODUCT DESCRIPTION 2.4 SPECIFICATIONS
2.4.11 TYPE TESTS
L30 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
2.4.12 PRODUCTION TESTS
THERMAL
Products go through an environmental test based upon an
Accepted Quality Level (AQL) sampling process.
GE Multilin L30 Line Current Differential System 2-27
Page 58
2.4 SPECIFICATIONS 2 PRODUCT DESCRIPTION
NOTICE
APPROVALS
2
COMPLIANCE APPLICABLE
CE Low voltage directive EN 60255-5
C-UL-US --- UL 508
EAC Machines and
COUNCIL DIRECTIVE
EMC directive EN 60255-26 / EN 50263
Equipment
ACCORDING TO
EN 61000-6-5
UL 1053
C22.2 No. 14
TR CU 010/2011
EAC
The EAC Technical Regulations (TR) for Machines and Equipment
apply to the Customs Union (CU) of the Russian Federation,
Belarus, and Kazakhstan.
ITEM DESCRIPTION
Country of origin Puerto Rico or Canada; see label on
Date of manufacture See label on rear of UR
Declaration of Conformity and/or
Certificate of Conformity
rear of UR
Available upon request
2.4.13 APPROVALS
MOUNTING
Attach mounting brackets using 20 inch-pounds (±2 inch-pounds)
of torque.
2.4.14 MAINTENANCE
CLEANING
Normally, cleaning is not required; but for situations where dust
has accumulated on the faceplate display, a dry cloth can be used.
Units that are stored in a de-energized
state should be powered up once per
year, for one hour continuously, to avoid
deterioration of electrolytic capacitors.
2-28 L30 Line Current Differential System GE Multilin
Page 59
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 L30 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.
3
Figure 3–1: L30 HORIZONTAL DIMENSIONS (ENHANCED PANEL)
GE Multilin L30 Line Current Differential System 3-1
Page 60
3.1 DESCRIPTION 3 HARDWARE
18.370”
[466,60 mm]
842808A1.CDR
0.280”
[7,11 mm]
Typ. x 4
4.000”
[101,60 mm]
17.750”
[450,85 mm]
CUT-OUT
19.00”
(482.6 mm)
7.00”
(177.8 mm)
Horizontal front view
Horizontal top view (19”, 4 RU)
17.52”
(445.0 mm)
Brackets
repositioned for
switchgear
mounting
10.90”
(276.8 mm)
9.80”
(248.9 mm)
8.97”
(227.8 mm)
17.75”
(450.8 mm)
7.13”
(181.1 mm)
Cutout
18.37”
(466.6 mm)
4.00”
(101.6 mm)
1.57”
(39.8 mm)
4 × 0.28”
(7.1 mm)
diameter
17.72”
(450.1 mm)
14.52”
(368.8 mm)
9.52”
(241.8 mm)
8 × 0.156 Ø
5.00”
(127.0 mm)
0.375”
(9.5 mm)
0.375”
(9.5 mm)
Remote mounting, view from the rear of the panel
Bezel
outline
0.375” (9.5)
1.875”
(47.6)
0.375” (9.5)
4.875”
(121.5 mm)
6.96”
(176.8 mm)
827704B4.CDR
3
Figure 3–2: L30 HORIZONTAL MOUNTING (ENHANCED PANEL)
Figure 3–3: L30 HORIZONTAL MOUNTING AND DIMENSIONS (STANDARD PANEL)
b) VERTICAL UNITS
The L30 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.
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.
3-2 L30 Line Current Differential System GE Multilin
Page 61
3 HARDWARE 3.1 DESCRIPTION
7.48”
(190.0 mm)
15.00”
(381.0 mm)
13.56”
(344.4 mm)
1.38”
(35.2 mm)
9.58”
(243.4 mm)
7.00”
(177.7 mm)
4.00”
(101.6 mm)
7.10”
(180.2 mm)
13.66”
(347.0 mm)
14.03”
(356.2 mm)
0.20”
(5.1 mm)
1.55”
(39.3 mm)
4 Places
0.213” (5.41 mm)
Front of Panel
Mounting Bracket
Vertical Enhanced Front View
Vertical Enhanced Top View
Vertical Enhanced Mounting Panel
CUTOUT
Front of Panel
Reference only
Terminal Blocks
Front
Bezel
Front of Panel
Mounting Bracket
Vertical Enhanced Side View
843809A2.cdr
3
Figure 3–4: L30 VERTICAL DIMENSIONS (ENHANCED PANEL)
GE Multilin L30 Line Current Differential System 3-3
Page 62
3
13.72"
(348.5 mm)
7.00"
(177.8 mm)
13.50"
(342.9 mm)
Front of
panel
Front
bezel
Panel
Mounting bracket
1.57”
(39.9 mm)
4.00
(101.6)
7.13”
(181.1 mm)
0.46”
(11.7 mm)
13.65”
(346.7 mm)
14.40”
(365.8 mm)
0.213" (5.4 mm),
4 places
Vertical front view
Vertical side view
843755A4.CDR
Vertical panel mounting
1.85"
(47.0 mm)
9.00"
(228.6 mm)
7.00"
(177.8 mm)
Terminal blocks
Mounting bracket
Panel shown for
reference only
Vertical bottom view
3.1 DESCRIPTION 3 HARDWARE
Figure 3–5: L30 VERTICAL MOUNTING AND DIMENSIONS (STANDARD PANEL)
For side mounting L30 devices with the enhanced front panel, see the following documents available on the UR DVD and
the GE Digital Energy website:
• GEK-113180: UR-Series UR-V Side-Mounting Front Panel Assembly Instructions
• GEK-113181: Connecting a Remote UR-V Enhanced Front Panel to a Vertical UR Device Instruction Sheet
• GEK-113182: Connecting a Remote UR-V Enhanced Front Panel to a Vertically-Mounted Horizontal UR Device
Instruction Sheet
For side mounting L30 devices with the standard front panel, use the following figures.
3-4 L30 Line Current Differential System GE Multilin
Page 63
3 HARDWARE 3.1 DESCRIPTION
3
Figure 3–6: L30 VERTICAL SIDE MOUNTING INSTALLATION (STANDARD PANEL)
GE Multilin L30 Line Current Differential System 3-5
Page 64
3
CUT-OUT
1.33"
(33.9)
2.83"
(71.9)
6.66"
(169.2)
12.20"
(309.9)
0.159" DIA. (6 PLACES)
(4.0)
0.213" DIA. (5.4)
(4 PLACES)
SEE HOLES MARKED 'X'
INCHES
MILLIMETERS
5.33"
(135.4)
PANEL SHOWN FOR
REFERENCE ONLY
(VIEWED FROM FRONT)
'X' 'X'
'X' 'X'
1.00"
(25.4)
1.00"
(25.4)
10.05
(255.3)
"
0.04
(1.0)
"
0.68"
(17.3)
5.27
(133.8)
"
843753A3.cdr
3.1 DESCRIPTION 3 HARDWARE
Figure 3–7: L30 VERTICAL SIDE MOUNTING REAR DIMENSIONS (STANDARD PANEL)
3-6 L30 Line Current Differential System GE Multilin
Page 65
3 HARDWARE 3.1 DESCRIPTION
VXUWTSPNMLKJH DGF BR
8
4
7
3
6
2
5
1
b
8
4
7
3
6
2
5
1
a
abc abcabcabc abc
4
3
2
1
b
4
3
2
1
a
IN
OUT
Tx1
Tx2
Rx2
Rx1
CH1
Tx
CH2
Rx
CH1
CH2
®
®
Technical Support:
Tel: (905) 294-6222
Fax: (905) 201-2098
Model:
Mods:
Wiring Diagram:
Inst. Manual:
Serial Number:
Firmware:
Mfg. Date:
L30D00HCHF8AH6AM6BP8BX7A
000
831817
GEK-113496
MAZB98000029
D
2008/01/05
Control Power:
Contact Inputs:
Contact Outputs:
88-300V DC @ 35W / 77-265V AC @ 35VA
300V DC Max 10mA
Standard Pilot Duty / 250V AC 7.5A
360V A Resistive / 125V DC Break
4A @ L/R = 40mS / 300W
RATINGS:
L30
Line Differential Relay
Made in
Canada
- M A A B 9 7 0 0 0 0 9 9 -
http://www.GEmultilin.com
GE Multilin
Optional
Ethernet
switch
Optional
direct
input/output
module
CPU module
(Ethernet not
available when
ordered with
Ethernet switch)
Optional
contact
input/output
module
CT/VT
module
Power
supply
module
Tx1
Tx2
Rx1
Rx2
Tx1
Tx2
831816A1.CDR
Optional
CT/VT or
contact
input/output
module
Optional
contact
input/output
module
Optional
contact
input/
output
module
WARNING
3.1.2 REAR TERMINAL LAYOUT
3
Figure 3–8: REAR TERMINAL VIEW
Do not touch any rear terminals while the relay is energized.
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 3–9: EXAMPLE OF MODULES IN F AND H SLOTS
GE Multilin L30 Line Current Differential System 3-7
Page 66
831817A3.CDR
TRIPPING DIRECTION
(5 Amp)
ABC
52
L30 COMPUTER
1
TXD RXD
RXD TXD
SGND SGND
1
8
3
2
20
7
6
4
5
22
25 PIN
CONNECTOR
PERSONAL
COMPUTER
9 PIN
CONNECTOR
22
33
44
55
66
77
88
99
TYPICAL CONFIGURATION
THE AC SIGNAL PATH IS CONFIGURABLE
CONTACTS SHOWN
WITH NO
CONTROL POWER
AC or DC
DC
( DC ONLY )
TO
REMOTE
L90
OPTIONAL
N
TC
TC
2
1
VOLTAGE SUPERVISION
VOLTAGE AND
CURRENT SUPERVISION
H1a
H2b
H1c
H1b
H2c
H2a
H4a
H4c
H3b
H3a
H4b
H3c
CONTACT INPUT H5a
CONTACT INPUT H7a
CONTACT INPUT H5c
CONTACT INPUT H7c
CONTACT INPUT H6a
CONTACT INPUT H8a
CONTACT INPUT H6c
CONTACT INPUT H8c
COMMON H5b
COMMON H7b
SURGE
H6a
H8a
H5b
H7b
H8b
H5a
H7a
H6c
H8c
H5c
H7c
H1
H2
H3
H4
I
V
I
V
I
V
I
V
CONTACT INPUTS AND OUTPUTS
6G
CONTACT INPUT U7a
CONTACT INPUT U7c
CONTACT INPUT U8a
CONTACT INPUT U8c
COMMON U7b
U8a
U7b
U7a
U8c
U7c
U1b
U2b
U3b
U4b
U5b
U6b
U1a
U2a
U3a
U4a
U5a
U6a
U1c
U2c
U3c
U4c
U5c
U6c
SURGE
U8b
U1
U5
U2
U6
U3
U4
CONTACT INPUTS AND OUTPUTS
6H
I
V
I
V
I
V
I
V
I
V
I
V
N7a
N1a
N2b
N7c
N1c
N7b
N1b
N8c
N8b
N2c
N8a
N2a
N4a
N5b
N4c
N6b
N3b
N3a
N6a
N4b
N5c
N5a
N3c
N6c
6K
CONTACT OUTPUTS
N1
N5
N2
N6
N3
N7
N4
N8
CRITICAL
FAILURE
48 V DC
OUTPUT
CONTROL
POWER
HI
LO
POWER SUPPLY 1
FILTER
SURGE
B3a
B1b
B8a
B6b
B8b
B6a
B3b
B1a
B2b
B5b
Tx1 Rx1
Tx2 Rx2
INTER-RELAY
COMMS.
W7A
FIBER
CHANNEL 2
FIBER
CHANNEL 1
(Rear view)
1
Power
supply
9
CPU
7
COM
8
CT/VT
6
Inputs/
outputs
*
6
Inputs/
outputs
*
6
Inputs/
outputs
*
6
Inputs/
outputs
6
Inputs/
outputs
*
MODULE ARRANGEMENT
JUMXLWKVBHT
DN
GS
PFR
* Optional
6C
CONTACT OUTPUTS
S1
S5
S2
S6
S3
S7
S4
S8
S7a
S1a
S2b
S7c
S1c
S7b
S1b
S8c
S8b
S2c
S8a
S2a
S4a
S5b
S4c
S6b
S3b
S3a
S6a
S4b
S5c
S5a
S3c
S6c
L6a
L8a
L5b
L7b
L5a
L7a
L6c
L8c
L5c
L7c
CONTACT INPUT L1a
CONTACT INPUT L4c
COMMON L5b
COMMON L7b
COMMON L1b
COMMON L3b
CONTACT INPUT L2a
CONTACT INPUT L5a
CONTACT INPUT L3c
CONTACT INPUT L6a
CONTACT INPUT L8a
CONTACT INPUT L1c
CONTACT INPUT L3a
CONTACT INPUT L5c
CONTACT INPUT L7c
CONTACT INPUT L7a
CONTACT INPUT L2c
SURGE
CONTACT INPUT L4a
CONTACT INPUT L6c
CONTACT INPUT L8c
L1a
L8b
L4c
L2c
L3a
L3c
L1c
L3b
L1b
L4a
L2a
6D
CONTACT INPUTS
GROUND BUS
No. 10AWG
minimum
8F
F1c
F4a
F3c
CURRENT INPUTS
F2c
F4c
F1a
F4b
F1b
F2a
F3a
F2b
F3b
IA
IB
IC
IG
IA5
IA1
IB5
IC5
IG5
IB1
IC1
IG1
F8c
F8a
F5a
F5c
F7c
F6a
F7a
F6c
VX
VA
VB
VC
VOLTAGE INPUTS
VX
VA
VB
VC
This diagram is based on the following order code:
L30-K00-HCL-F8F-H6G-L6D-N6K-S6C-U6H-W7A
This diagram provides an example of how the device
is wired, not specifically how to wire the device. Please
refer to the Instruction Manual for additional details on
wiring based on various configurations.
common
100BaseFX
100BaseFX
10/100
Base-T
D1a
D2a
D4b
D3a
D4a
IRIG-B
Input
IRIG-B
Output
COM
1
RS485
COM 2
REDUNDANT
NORMAL
CPU 9K
Tx2
Rx2
Tx1
Rx1
BNC
BNC
Fibre
Optic
Ground at
Remote
Device
Shielded
twisted pairs
Co-axial cable
Co-axial cable
RS-232
DB-9
(front)
MODULES MUST BE
GROUNDED IF
TERMINAL IS
PROVIDED
OPEN DELTA
VT CONNECTION (ABC)
F5a
F5c
F7c
F6a
F7a
F6c
VA
VB
VC
VOLTAGE INPUTS
VA
VB
VC
L30
LINE DIFFERENTIAL
PROTECTION SYSTEM
ALTERNATE
3.2 WIRING 3 HARDWARE
3.2WIRING 3.2.1 TYPICAL WIRING
3
3-8 L30 Line Current Differential System GE Multilin
Figure 3–10: TYPICAL WIRING DIAGRAM
Page 67
3 HARDWARE 3.2 WIRING
NOTICE
3.2.2 DIELECTRIC STRENGTH
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
7
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
(AC)
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
3.2.3 CONTROL POWER
Control power supplied to the relay must be connected to the matching power supply range of the
relay. If voltage is applied to the wrong terminals, damage can occur.
The L30 relay, like almost all electronic relays, contains electrolytic capacitors. These capacitors are
well-known to deteriorate over time if voltage is not applied periodically. Deterioration can be avoided
by powering up the relay at least once a year.
The power supply module can be ordered for two possible voltage ranges, and the UR can be ordered with or without a
redundant power supply module option. Each range has a dedicated input connection for proper operation. The ranges are
as shown below (see the Technical specifications 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 will be 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 will de-energize.
For high reliability systems, the L30 has a redundant option in which two L30 power supplies are placed in parallel on the
bus. If one of the power supplies become faulted, the second power supply will assume 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 will also indicate 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
GE Multilin L30 Line Current Differential System 3-9
Page 68
3
AC or DC
NOTE:
14 gauge stranded
wire with suitable
disconnect devices
is recommended.
Heavy copper conductor
or braided wire
Switchgear
ground bus
UR-series
protection system
FILTER
SURGE
–
+
LOW
+
HIGH
B8b B8a B6a B6b B5b
CONTROL
POWER
827759AA.CDR
—
+
OPTIONAL
ETHERNET SWITCH
AC or DC
GND
NOTICE
3.2 WIRING 3 HARDWARE
Figure 3–11: CONTROL POWER CONNECTION
3.2.4 CT AND VT MODULES
A CT/VT module may have voltage or current 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 terminals for nominal current of 1 A or 5 A matches the
secondary rating of the connected CTs. Unmatched CTs can result in equipment damage or inade-
quate protection.
To connect the module, size 12 American Wire Gauge (AWG) is commonly used; the maximum size is 10 AWG.
CT/VT modules may 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 can be used.
The above modules have enhanced diagnostics, when ordered as such, that 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 as follows. Twisted-pair
cabling on the zero-sequence CT is recommended.
3-10 L30 Line Current Differential System GE Multilin
Page 69
3 HARDWARE 3.2 WIRING
Ground connection to neutral
must be on the source side
UNSHIELDED CABLE
LOAD
ABCN G
Ground
outside CT
Source
LOAD
SHIELDED CABLE
996630A5
AB C
Source
To ground;
must be on
load side
Stress cone
shields
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
1a
1b
1c
2a
2b
2c
3a
4a
5a
6a
7a
8a
3b
4b
5c
6c
7c
8c
3c
4c
Current inputs
8F, 8G, 8L, and 8M modules (4 CTs and 4 VTs)
Voltage inputs
VA
VB
VC
VX
VA
VB
VC
VX
IA
IC
IB
IG
IA5
IC5
IB5
IG5
IA1
IC1
IB1
IG1
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
1a
5a
1b
5b
1c
5c
2a
6a
2b
6b
2c
6c
3a
7a
4a
8a
3b
7b
4b
8b
3c
7c
4c
8c
Current inputs
842766A3.CDR
IA
IA
IC
IC
IB
IB
IG
IG
IA5
IA5
IC5
IC5
IB5
IB5
IG5
IG5
IA1
IA1
IC1
IC1
IB1
IB1
IG1
IG1
8H, 8J, 8N, and 8R modules (8 CTs)
Figure 3–12: 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.
3
Figure 3–13: CT/VT MODULE WIRING
GE Multilin L30 Line Current Differential System 3-11
Page 70
3.2 WIRING 3 HARDWARE
3.2.5 PROCESS BUS MODULES
The L30 can be ordered with a process bus interface module. This module is designed to interface with the GE Multilin
HardFiber system, allowing bi-directional 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.
• Drastically reduces labor associated with design, installation, and testing of protection and control applications using
the L30 by reducing the number of individual copper terminations.
• Integrates seamlessly with existing L30 applications, since the IEC 61850 process bus interface module replaces the
traditional CT/VT modules.
• Communicates using open standard IEC 61850 messaging.
3
For additional details on the HardFiber system, refer to GE publication GEK-113500: HardFiber 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 may 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 L30 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.
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 may
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 there is a voltage across open contact (the detector allows a current of about 1 to 2.5 mA), and the current monitor
is set to “On = 1” when the current flowing through the closed contact 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. 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.
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. Form-A
contact output with or without a current or voltage monitoring option is not polarity sensitive. The polarity shown in the figure
is required for solid-state contact output connection.
3-12 L30 Line Current Differential System GE Multilin
Page 71
3 HARDWARE 3.2 WIRING
Load
I
~#a
~#b
~#c
V
827862A4.CDR
+
+
+
+
+
a) Voltage with optional
current monitoring
Voltage monitoring only
Load
I
V
Both voltage and current monitoring
Load
I
V
b) Current with optional
voltage monitoring
Current monitoring only Both voltage and current monitoring
(external jumper a-b is required)
Load
V
Load
c) No monitoring
~#a
~#b
~#c
~#a
~#b
~#c
~#a
~#b
~#c
~#a
~#b
~#c
I
WARNING
NOTE
NOTE
NOTICE
3
Figure 3–14: 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.
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 to this problem is to use the voltage measuring trigger input of the relay test set, and connect the formA 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 Ω, 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).
GE Multilin L30 Line Current Differential System 3-13
Page 72
3.2 WIRING 3 HARDWARE
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
OUTPUT OR
INPUT
TER MINAL
ASSIGNMENT
OUTPUT OR
INPUT
3
~6E MODULE ~6F MODULE ~6G MODULE ~6H MODULE
TERMINAL
ASSIGNMENT
~1Form-C ~1 Fast Form-C ~1Form-A ~1Form-A
~2Form-C ~2 Fast Form-C ~2Form-A ~2Form-A
~3Form-C ~3 Fast Form-C ~3Form-A ~3Form-A
~4Form-C ~4 Fast Form-C ~4Form-A ~4Form-A
~5a, ~5c 2 Inputs ~5 Fast Form-C ~5a, ~5c 2 Inputs ~5 Form-A
~6a, ~6c 2 Inputs ~6 Fast Form-C ~6a, ~6c 2 Inputs ~6 Form-A
~7a, ~7c 2 Inputs ~7 Fast Form-C ~7a, ~7c 2 Inputs ~7a, ~7c 2 Inputs
~8a, ~8c 2 Inputs ~8 Fast Form-C ~8a, ~8c 2 Inputs ~8a, ~8c 2 Inputs
OUTPUT OR
INPUT
TER MINAL
ASSIGNMENT
OUTPUT TERMINAL
TERMINAL
ASSIGNMENT
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
3-14 L30 Line Current Differential System GE Multilin
Page 73
3 HARDWARE 3.2 WIRING
~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
~2 Solid-State ~2 Solid-State ~2a, ~2c 2 Inputs ~2 2 Outputs
~3Not Used ~3 Not Used ~3a, ~3c 2 Inputs ~3 2 Outputs
~4 Solid-State ~4 Solid-State ~4a, ~4c 2 Inputs ~4 2 Outputs
~5Not Used ~5 Not Used ~5a, ~5c 2 Inputs ~5 2 Outputs
~6 Solid-State ~6 Solid-State ~6a, ~6c 2 Inputs ~6 2 Outputs
~7Not Used ~7 Not Used ~7a, ~7c 2 Inputs ~72 Outputs
~8 Solid-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
ASSIGNMENT
OUTPUT OR
INPUT
OUTPUT TERMINAL
TERMINAL
ASSIGNMENT
ASSIGNMENT
OUTPUT TERMINAL
OUTPUT TERMINAL
ASSIGNMENT
ASSIGNMENT
OUTPUT
OUTPUT
3
GE Multilin L30 Line Current Differential System 3-15
Page 74
3
842762A3.CDR
3.2 WIRING 3 HARDWARE
Figure 3–15: CONTACT INPUT AND OUTPUT MODULE WIRING (1 of 2)
3-16 L30 Line Current Differential System GE Multilin
Page 75
3 HARDWARE 3.2 WIRING
DIGITAL I/O
6K
1b
2b
3b
4b
5b
7b
6b
8b
1a
2a
3a
4a
5a
7a
6a
8a
1c
2c
3c
4c
5c
7c
6c
8c
1
5
7
2
6
8
3
4
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
I
V
I
V
I
V
I
V
I
V
I
V
DIGITAL I/O
6P
1b
2b
3b
4b
5b
6b
1a
2a
3a
4a
5a
6a
1c
2c
3c
4c
5c
6c
1
5
2
6
3
4
8a
7b
7a
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
CONTACT IN 7a
CONTACT IN 7c
CONTACT IN 8a
CONTACT IN 8c
COMMON 7b
SURGE
8c
7c
8b
DIGITAL I/O
6U
1b
2b
3b
4b
5b
6b
1a
2a
3a
4a
5a
6a
1c
2c
3c
4c
5c
6c
1
5
2
6
3
4
8a
7b
7a
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
CONTACT IN 7a
CONTACT IN 7c
CONTACT IN 8a
CONTACT IN 8c
COMMON 7b
SURGE
8c
7c
8b
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
I
V
I
V
DIGITAL I/O
6M
1b
2b
3b
4b
5b
6b
1a
2a
3a
4a
5a
6a
1c
2c
3c
4c
5c
6c
1
5
2
6
3
4
8a
7b
7a
CONTACT IN 7a
CONTACT IN 7c
CONTACT IN 8a
CONTACT IN 8c
COMMON 7b
SURGE
8c
7c
8b
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
DIGITAL I/O
6S
1b
2b
3b
4b
5b
6b
1a
2a
3a
4a
5a
6a
1c
2c
3c
4c
5c
6c
1
5
2
6
3
4
8a
7b
7a
CONTACT IN 7a
CONTACT IN 7c
CONTACT IN 8a
CONTACT IN 8c
COMMON 7b
SURGE
8c
7c
8b
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
I
V
I
V
I
V
I
V
DIGITAL I/O
6N
1b
2b
3b
4b
6c
1a
2a
3a
4a
5a
6a
1c
2c
3c
4c
5c
5b
1
2
3
4
8a
7b
7a
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
8c
7c
8b
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
DIGITAL I/O
6T
1b
2b
3b
4b
6c
1a
2a
3a
4a
5a
6a
1c
2c
3c
4c
5c
5b
1
2
3
4
8a
7b
7a
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
8c
7c
8b
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
I
V
I
V
DIGITAL I/O
6L
1b
2b
3b
4b
6c
1a
2a
3a
4a
5a
6a
1c
2c
3c
4c
5c
5b
1
2
3
4
8a
7b
7a
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
8c
7c
8b
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
DIGITAL I/O
6R
1b
2b
3b
4b
6c
1a
2a
3a
4a
5a
6a
1c
2c
3c
4c
5c
5b
1
2
3
4
8a
7b
7a
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
8c
7c
8b
842763A2.CDR
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
DIGITAL I/O
6V
1b
2b
3b
4b
6c
1a
2a
3a
4a
5a
6a
1c
2c
3c
4c
5c
5b
1
2
3
4a
8a
7b
7a
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
8c
7c
8b
~
4c
I
V
I
V
NOTICE
3
GE Multilin L30 Line Current Differential System 3-17
Figure 3–16: CONTACT INPUT AND OUTPUT MODULE WIRING (2 of 2)
For proper functionality, observe the polarity shown in the figures for all contact input and output connections.
Page 76
3.2 WIRING 3 HARDWARE
827741A5.CDR
24 to 250 V
(Wet) (Dry)
Contact input 1
Contact input 2
Contact input 3
Surge
Contact input 4
~7a
Common
~7b
~7c
~8a
~8b
~8c
Contact input 1
Contact input 2
Contact input 3
Surge
Contact input 4
~7a
Common
~7b
~7c
~8a
~8b
~8c
Control power
Surge
B5b
Filter
B8b
B6b
B6a
B8a
Critical failure
B1b
48 V DC output
B3b
B1a
B2b
B3a
HI+
LO+
Power supply module
Terminals from type 6B
contact input/output module
Terminals from type 6B
contact input/output module
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 will flow 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 will detect 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.
3
Figure 3–17: DRY AND WET CONTACT INPUT CONNECTIONS
Wherever a tilde “~” symbol appears, substitute with the slot position of the module.
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.
3-18 L30 Line Current Differential System GE Multilin
Page 77
3 HARDWARE 3.2 WIRING
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 will have a 5 second delay after a contact input changes state.
Figure 3–18: 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.
3
Figure 3–19: AUTO-BURNISH DIP SWITCHES
The auto-burnish circuitry has an internal fuse for safety purposes. During regular maintenance, the auto-burnish
functionality can be checked using an oscilloscope.
GE Multilin L30 Line Current Differential System 3-19
Page 78
3.2 WIRING 3 HARDWARE
NOTE
842764A1.CDR
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 (RTDs). Hardware and software are 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 may 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 following figure illustrates the trans-
3
ducer module types (5A, 5C, 5D, 5E, and 5F) and channel arrangements that may be ordered for the relay.
Wherever a tilde “~” symbol appears, substitute with the slot position of the module.
Figure 3–20: TRANSDUCER INPUT/OUTPUT MODULE WIRING
The following figure show how to connect RTDs.
3-20 L30 Line Current Differential System GE Multilin
Page 79
3 HARDWARE 3.2 WIRING
Three-wire shielded cable
RTD terminals
Maximum total lead resistance:
25 ohms for Platinum RTDs
Route cable in separate conduit from
current carrying conductors
RTD
859736A1.CDR
RTD terminals
RTD
RTD
For RTD
RTD
SURGE
~1
~1 &
~2
~2
~8b
~1a
~1b
~2a
Hot
Hot
Return
Comp
Comp
~2c
~1c
3
Figure 3–21: RTD CONNECTIONS
GE Multilin L30 Line Current Differential System 3-21
Page 80
3.2 WIRING 3 HARDWARE
NOTE
NOTE
3.2.8 RS232 FACEPLATE PORT
A 9-pin RS232C serial port is located on the L30 faceplate for programming with a personal computer. All that is required to
use this interface is a personal 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.
3
Figure 3–22: RS232 FACEPLATE PORT CONNECTION
3.2.9 CPU COMMUNICATION PORTS
a) OVERVIEW
In addition to the faceplate RS232 port, the L30 provides two additional communication ports or a managed six-port Ethernet switch, depending on the installed CPU module. In the following table, multiple Ethernet ports are supported, but only
one can be used at a time. For example, the 10Base-F (normal) port and 10Base-T (alternate) port are supported in the 9G
module, but only one can be used at a time.
The CPU modules do not require a surge ground connection.
Table 3–3: CPU MODULE COMMUNICATIONS (APPLICABLE MODULE DEPENDS ON ORDER CODE)
CPU TYPE COM1 COM2
9E RS485 RS485
9G 10Base-F or 10Base-T (obsolete) RS485
9H Redundant 10Base-F or 10Base-T (obsolete) RS485
9J 100Base-FX or 10/100Base-T RS485
9K Redundant 100Base-FX or 10/100Base-T RS485
9L 100Base-FX (obsolete) RS485
9M Redundant 100Base-FX (obsolete) RS485
9N 10/100Base-T RS485
9S Six-port managed Ethernet switch RS485
3-22 L30 Line Current Differential System GE Multilin
Page 81
3 HARDWARE 3.2 WIRING
NOTE
COMMON
+
+
—
—
D1a
D2a
D3a
D4b
D4a
BNC
IRIG-B
input
CPU 9E
RS485
COM2
COMMON
+
—
D1b
D2b
D3b
RS485
COM1
Ground at
remote
device
Co-axial cable
Shielded twisted-pairs
842765AC.CDR
CPU 9S
COMMON
+
+
—
—
D1a
D2a
D3a
D4b
D4a
BNC
IRIG-B
input
Co-axial cable
Shielded twisted-pairs
Ground at
remote
device
RS485
COM2
NORMAL
ALTERNATE
COM1
10Base-FL
10Base-FL
10Base-T
Tx1
Rx1
Tx2
Rx2
COMMON
+
+
—
—
D1a
D2a
D3a
D4b
D4a
BNC
IRIG-B
input
CPU 9H
Co-axial cable
Shielded
twisted-pairs
MM fiber
optic cable
Ground at
remote
device
RS485
COM2
REDUNDANT
NORMAL
ALTERNATE
COM1
100Base-FX
100Base-FX
10/100Base-T
Tx1
Rx1
Tx2
Rx2
COMMON
+
+
—
—
D1a
D2a
D3a
D4b
D4a
BNC
IRIG-B
input
CPU 9K
Co-axial cable
Shielded
twisted-pairs
MM fiber
optic cable
Ground at
remote
device
RS485
COM2
REDUNDANT
NORMAL
COM1
10Base-FL
10Base-T
Tx1
Rx1
COMMON
+
+
—
—
D1a
D2a
D3a
D4b
D4a
BNC
IRIG-B
input
CPU 9G
RS485
COM2
Shielded twisted-pairs
Co-axial cable
MM fiber
optic cable
Ground at
remote
device
ALTERNATE
NORMAL
COM1
100Base-FX
Tx1
Rx1
COMMON
+
+
—
—
D1a
D2a
D3a
D4b
D4a
BNC
IRIG-B
input
CPU 9J
RS485
COM2
Shielded twisted-pairs
Co-axial cable
MM fiber
optic cable
Ground at
remote
device
10/100Base-T
ALTERNATE
Co-axial cable
Ground at
remote
device
NORMAL
10/100Base-T
COMMON
+
+
—
—
D1a
D2a
D3a
D4b
D4a
BNC
IRIG-B
input
CPU
Shielded
twisted-pairs
RS485
COM2
COM1
9N
100Base-FX
COMMON
+
+
—
—
D1a
D2a
D3a
D4b
D4a
BNC
IRIG-B
input
CPU
RS485
COM2
9L
COM1NORMAL
Co-axial cable
SM fiber
optic cable
Ground at
remote
device
NORMAL
ALTERNATE
COM1
100Base-FX
100Base-F
COMMON
+
+
—
—
D1a
D2a
D3a
D4b
D4a
BNC
IRIG-B
input
CPU 9M
Co-axial cable
Shielded twisted-pairs
SM fiber optic cable
Ground at
remote
device
RS485
COM2
For the 9G/9H CPU, the 10Base-T port can only be used when the CH1 10Base-F fiber has been removed. The
10Base-T Ethernet cable and the CH1 10Base-F fiber cable cannot both be installed at the same time.
For the 9J/9K CPU, the 10/100Base-T port has the lowest priority and is only active if both CH1 and CH2 fiber links
are down. Installation of the 10/100Base-T Ethernet cable at the same time as the CH1 and/or CH2 100Base-F
fiber cables does not affect the communication over the CH1 or CH2 fiber ports.
3
Figure 3–23: CPU MODULE COMMUNICATIONS WIRING (APPLICABLE MODULE DEPENDS ON ORDER CODE)
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 these ports, 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
GE Multilin L30 Line Current Differential System 3-23
Page 82
3.2 WIRING 3 HARDWARE
SCADA / PLC / computer
Optocoupler
Data
UR-series device
Shield
827757AA.CDR
Last device
Z (*)
T
Z (*) Terminating impedance at
T
each end (typically 120 Ω and 1 nF)
Twisted pair
RS485 +
RS485 –
COMP 485COM
Relay
Relay
Ground shield at SCADA / PLC /
computer only or at
UR-series device only
Data
Optocoupler
Up to 32 devices,
maximum 4000 feet
(1200 m)
Z (*)
T
RS485 +
RS485 –
COMP 485COM
RS485 +
RS485 –
COMP 485COM
COM
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 L30 COM terminal (#3); others function correctly only if the common wire is connected to the L30 COM terminal, but insulated from the shield.
To avoid loop currents, the shield should be grounded 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 should also 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. Star or stub connections should
be avoided entirely.
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.
3
Both ends of the RS485 circuit should also be terminated with an impedance as shown below.
3-24 L30 Line Current Differential System GE Multilin
Figure 3–24: RS485 SERIAL CONNECTION
Page 83
3 HARDWARE 3.2 WIRING
NOTE
c) 10BASE-FL AND 100BASE-FX FIBER OPTIC PORTS
ENSURE 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.
The fiber optic communication ports allow for fast and efficient communications between relays at 10 Mbps or 100 Mbps.
Optical fiber may be connected to the relay supporting a wavelength of 820 nm in multi-mode or 1310 nm in multi-mode
and single-mode. The 10 Mbps rate is available for CPU modules 9G and 9H; 100Mbps is available for modules 9J, 9K,
and 9N. The 9H and 9K modules have a second pair of identical optical fiber transmitter and receiver for redundancy.
3.2.10 IRIG-B
IRIG-B is a standard time code format that allows stamping of events to be synchronized among connected devices. The
IRIG-B code allows time accuracies of up to 100 ns. Using the IRIG-B input, the L30 operates an internal oscillator with 1
µs resolution and accuracy. The IRIG time code formats are serial, width-modulated codes which can be either DC level
3
GE Multilin L30 Line Current Differential System 3-25
Page 84
3.2 WIRING 3 HARDWARE
UR-series device
BNC (in)
Receiver
RG58/59 coaxial cable
GPS satellite system
GPS connection
IRIG-B (–)
4A
+
859716A1.CDR
IRIG-B
time code generator
(DC-shift or
amplitude modulated
signal can be used)
4B
IRIG-B (+)
BNC (out)
Repeater
To other devices
(DC-shift only)
UR-series device
BNC (in)
Receiver
Twisted-pair cable
GPS satellite system
GPS connection
IRIG-B (–)
4A
+
IRIG-B
time code generator
(DC-shift or
amplitude modulated
signal can be used)
4B
IRIG-B (+)
BNC (out)
Repeater
To other devices
(DC-shift only)
shifted or amplitude modulated (AM). Third party equipment is available for generating the IRIG-B signal; this equipment
may use a GPS satellite system to obtain the time reference so that devices at different geographic locations can also be
synchronized.
3
Figure 3–25: OPTIONS FOR IRIG-B CONNECTION
3-26 L30 Line Current Differential System GE Multilin
Page 85
3 HARDWARE 3.2 WIRING
842744A2.CDR
UR-series master
UR-series slave 1
IRIG-B
repeater
DC or AM
From IRIG-B
generator
DC only
To other slave UR devices
IRIG-B
repeater
NOTE
NOTE
The IRIG-B repeater provides an amplified DC-shift IRIG-B signal to other equipment. By using one IRIG-B serial connection, several UR-series relays can be synchronized. The IRIG-B repeater has a bypass function to maintain the time signal
even when a relay in the series is powered down.
3
Figure 3–26: IRIG-B REPEATER
Using an amplitude modulated receiver will cause errors up to 1 ms in event time-stamping.
When IRIG-B is used as the time synchronization source for synchrophasors, the DC level shifted option must be
used in order to achieve the 1% Total Vector Error specified by the standard. If amplitude modulated IRIG-B is
used, it results in a 20 to 25 degree error in the synchrophasor angle measurement. The IEEE 1588 Precision Time
Protocol can also be used to achieve accurate time synchronization for synchrophasor calculation.sing an amplitude modulated receiver will also cause errors of up to 1 ms in metered synchrophasor values.
GE Multilin L30 Line Current Differential System 3-27
Page 86
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 L30. 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 3–4: 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
3
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 L30 relay requires at least one communications channel.
3-28 L30 Line Current Differential System GE Multilin
Page 87
3 HARDWARE 3.3 PILOT CHANNEL COMMUNICATIONS
NOTE
NOTE
CAUTION
7A, 7B, and
7C modules
7H, 7I, and
7J modules
1 channel 2 channels
Rx1
Rx1
Rx2
Tx1 Tx1
Tx2
831719A3.CDR
1 channel 2 channels
Rx1 Rx1
Rx2
Tx1 Tx1
Tx2
831720A5.CDR
72 and 7D
modules
73 and 7K
modules
CAUTION
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 MAY CAUSE INJURY TO 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.
3
Figure 3–27: LED AND ELED FIBER MODULES
The following figure shows the configuration for the 72, 73, 7D, and 7K fiber-laser module.
Figure 3–28: LASER FIBER MODULES
Observing any fiber transmitter output can injure the eye.
3.3.3 FIBER-LASER TRANSMITTERS
GE Multilin L30 Line Current Differential System 3-29
Page 88
3
NOTICE
3.3 PILOT CHANNEL COMMUNICATIONS 3 HARDWARE
When using a laser Interface, attenuators may be necessary to ensure that you do not exceed the
maximum optical input power to the receiver.
3-30 L30 Line Current Differential System GE Multilin
Page 89
3 HARDWARE 3.3 PILOT CHANNEL COMMUNICATIONS
842773A3.CDR
~8a
~8b
7S
Rx +
Tx +
Shield
Tx –
Shield
Rx –
Tx –
Rx +
Tx +
Rx –
G.703 communications
~2b
~6a
~7a
~1b
~1a
~3a
~6b
~7b
~2a
~3b
G.703
channel 2
G.703
channel 1
Surge
Surge
X8a
X8b
7S
Rx +
Tx +
Shield
Tx –
Shield
Rx –
Tx –
Rx +
Tx +
Rx –
G.703 communications
X2b
X6a
X7a
X1b
X1a
X3a
X6b
X7b
X2a
X3b
G.703
channel 2
G.703
channel 1
Surge
Surge
831727A5.CDR
X8a
X8b
7S
Rx +
Tx +
Shield
Tx –
Shield
Rx –
Tx –
Rx +
Tx +
Rx –
G.703 communications
X2b
X6a
X7a
X1b
X1a
X3a
X6b
X7b
X2a
X3b
G.703
channel 2
G.703
channel 1
Surge
Surge
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 ð PRODUCT SETUP ðò DIRECT I/O ðò 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 to ground the shield at one end, do not ground the shield at the other end. This interface module is protected
by surge suppression devices.
3
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 may 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). The ejector/inserter clips located at the top and at
the bottom of each module, must be pulled simultaneously in order to release the module for removal. The original
location of the module should be recorded to help ensure that the same or replacement module is inserted into the correct slot.
2. Remove the module cover screw.
3. Remove the top cover by sliding it towards the rear and then lift it upwards.
4. Set the timing selection switches (channel 1, channel 2) to the desired timing modes.
5. Replace the top cover and the cover screw.
GE Multilin L30 Line Current Differential System 3-31
Page 90
3.3 PILOT CHANNEL COMMUNICATIONS 3 HARDWARE
Cover screw
Top cover
Bottom cover
Ejector/inserter clip
Ejector/inserter clip
Timing selection
switches
Channel 1
Channel 2
FRONT
REAR
831774A3.CDR
6. 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 will be fully inserted.
3
Figure 3–31: G.703 TIMING SELECTION SWITCH SETTING
Table 3–5: G.703 TIMING SELECTIONS
SWITCHES FUNCTION
S1 OFF → octet timing disabled
S5 and S6 S5 = OFF and S6 = OFF → loop timing mode
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
c) G.703 OCTET TIMING
If octet timing is enabled (ON), this 8 kHz signal will be asserted during the violation of bit 8 (LSB) necessary for connecting
to higher order systems. When L30s are connected back to back, octet timing should be 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).
3-32 L30 Line Current Differential System GE Multilin
Page 91
3 HARDWARE 3.3 PILOT CHANNEL COMMUNICATIONS
842752A2.CDR
Internal timing mode
Loop timing mode
(factory default)
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.
3
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 3–32: G.703 MINIMUM REMOTE LOOPBACK MODE
Figure 3–33: G.703 DUAL LOOPBACK MODE
GE Multilin L30 Line Current Differential System 3-33
Page 92
3.3 PILOT CHANNEL COMMUNICATIONS 3 HARDWARE
NOTE
~
~
~
~
~
~
~
~
~
~
~
~
~
~
Shield
Shield
COM
Tx +
Tx +
Tx –
Tx –
Rx –
Rx –
Rx +
Rx +
3b
5b
2a
4a
6a
7b
8b
Clock
RS422
channel 1
RS422
channel 2
Surge
3a
5a
4b
6b
7a
2b
8a
Inter-relay communications 7W
842776A3.CDR
Dual-channel RS422 module
~
~
~
~
~
Shield
Tx +
Tx –
Rx –
Rx +
3b
2a
6a
RS422
3a
4b
~
~
~
~
COM
8b
Clock
Surge
7a
2b
8a
Inter-relay comms. 7T
Single-channel RS422 module
~ indicates the slot position
831809A2.CDR
W8a
7T
Shield
Tx –
Rx –
Tx +
Rx +
RS422 communications
W4b
W3a
W3b
W6a
W2a
RS422
channel 1
Surge
+
–
W7a
W8b
Clock
Common
W2b
COM
W8a
7T
Shield
Tx –
Rx –
Tx +
Rx +
RS422 communications
W4b
W3a
W3b
W6a
W2a
RS422
channel 1
Surge
+
–
W7a
W8b
Clock
Common
W2b
COM
+
–
64 kbps
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.
3
• Site 2: Terminate shield to COM pin 2b.
The clock terminating impedance should match 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 may 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 will function correctly if 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), will connect to the clock inputs of the UR–RS422 interface in the usual fashion.
3-34 L30 Line Current Differential System GE Multilin
Figure 3–34: RS422 INTERFACE CONNECTIONS
Figure 3–35: TYPICAL PIN INTERCONNECTION BETWEEN TWO RS422 INTERFACES
Page 93
3 HARDWARE 3.3 PILOT CHANNEL COMMUNICATIONS
Data module 1
Data module 2
Signal name
Signal name
SD(A) - Send data
TT(A) - Terminal timing
TT(B) - Terminal timing
SD(B) - Send data
RD(A) - Received data
RD(A) - Received data
SD(A) - Send data
SD(B) - Send data
RD(B) - Received data
RD(B) - Received data
RS(A) - Request to send (RTS)
RS(A) - Request to send (RTS)
RT(A) - Receive timing
CS(A) - Clear To send
CS(A) - Clear To send
RT(B) - Receive timing
CS(B) - Clear To send
CS(B) - Clear To send
Local loopback
Local loopback
Remote loopback
Remote loopback
Signal ground
Signal ground
ST(A) - Send timing
ST(A) - Send timing
ST(B) - Send timing
ST(B) - Send timing
RS(B) - Request to send (RTS)
RS(B) - Request to send (RTS)
831022A3.CDR
W
7a
W
2b
W
8a
7W
Shld.
Shld.
Tx1(+)
Tx2(+)
Tx1(-)
Tx2(-)
Rx1(+)
Rx2(+)
+
com
Rx1(-)
Rx2(-)
–
INTER-RELAY COMMUNICATIONS
W
3a
W
5b
W
5a
W
3b
W
2a
W
6a
W
6b
W
7b
W
8b
W
4b
W
4a
RS422
CHANNEL 1
RS422
CHANNEL 2
CLOCK
SURGE
In addition, the send timing outputs of data module 1 will also be paralleled to the terminal timing inputs of data module 2.
By using this configuration, the timing for both data modules and both UR–RS422 channels will be derived from a single
clock source. As a result, data sampling for both of the UR–RS422 channels will be 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.
3
Figure 3–36: TIMING CONFIGURATION FOR RS422 TWO-CHANNEL, 3-TERMINAL APPLICATION
Data module 1 provides timing to the L30 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 may vary depending on the manufacturer.
GE Multilin L30 Line Current Differential System 3-35
Page 94
3.3 PILOT CHANNEL COMMUNICATIONS 3 HARDWARE
Tx Clock
Tx Data
842802A2.CDR
~7b
~8a
7V
Shield
Rx +
Tx –
Rx –
Tx –
Tx +
Rx –
Shield
Rx +
Tx +
RS422 communications
~4b
~5b
~4a
~3a
~3b
~6a
~5a
~6b
~2a
RS422
channel 2
RS422
channel 1
Surge
Tx –
Rx –
~7a
~8b
Channel 1
clock
Common
~2b
COM
Tx –
Rx –
~1b
~1a
Channel 2
clock
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
Figure 3–37: CLOCK AND DATA TRANSITIONS
d) RECEIVE TIMING
The RS422 interface utilizes NRZI-MARK modulation code and; therefore, does not rely on an Rx clock to recapture data.
NRZI-MARK is an edge-type, invertible, self-clocking code.
To recover the Rx clock from the data-stream, an integrated DPLL (digital phase lock loop) circuit is utilized. The DPLL is
driven by an internal clock, which is 16-times over-sampled, and uses this clock along with the data-stream to generate a
data clock that can be used as the SCC (serial communication controller) receive clock.
The two-channel two-clock RS422 interface (module 7V) is for use with the synchrophasor feature. The figure shows the
module connections.
The following figure shows the combined RS422 plus fiberoptic interface configuration at 64K baud. The 7L, 7M, 7N, 7P,
and 74 modules are used in two-terminal with a redundant channel or three-terminal configurations where channel 1 is
employed via the RS422 interface (possibly with a multiplexer) and channel 2 via direct fiber.
3.3.6 TWO-CHANNEL TWO-CLOCK RS422 INTERFACE
3-36 L30 Line Current Differential System GE Multilin
Figure 3–38: TWO-CHANNEL TWO-CLOCK RS422 INTERFACE CONNECTIONS
3.3.7 RS422 AND FIBER INTERFACE
Page 95
3 HARDWARE 3.3 PILOT CHANNEL COMMUNICATIONS
NOTICE
Tx2
Rx2
842777A2.CDR
~8a
7L, 7M, 7N,
7P, and 74
Shield
Tx –
Rx –
Tx +
Rx +
RS422
communications
~4b
~3a
~3b
~6a
~2a
RS422
channel 1
Surge
+
–
~7a
~8b
Clock
channel 1
Common
~2b
COM
Fiber
channel 2
NOTICE
Rx2
Tx2
842778A2.CDR
~3b
75, 7E, 7F, 7G,
and 7Q
Rx +
Shield
Tx –
Rx –
Tx +
G.703
communications
~2b
~1b
~1a
~3a
~2a
G.703
channel 1
Surge
Fiber
channel 2
AWG 20-24 twisted shielded pair is recommended for external RS422 connections and the shield should be grounded only
at one end. For the direct fiber channel, power budget issues should be addressed properly.
When using a LASER Interface, attenuators may be necessary to ensure that you do not exceed
maximum optical input power to the receiver.
Figure 3–39: RS422 AND FIBER INTERFACE CONNECTION
Connections shown above are for multiplexers configured as DCE (data communications equipment) units.
3.3.8 G.703 AND FIBER INTERFACE
3
The figure below shows the combined G.703 plus fiberoptic interface configuration at 64 kbps. The 7E, 7F, 7G, 7Q, and 75
modules are used in configurations where channel 1 is employed via the G.703 interface (possibly with a multiplexer) and
channel 2 via direct fiber. AWG 24 twisted shielded pair is recommended for external G.703 connections connecting the
shield to pin 1a at one end only. For the direct fiber channel, power budget issues should be addressed properly. See previous sections for additional details on the G.703 and fiber interfaces.
When using a laser Interface, attenuators may be necessary to ensure that you do not exceed the
maximum optical input power to the receiver.
Figure 3–40: G.703 AND FIBER INTERFACE CONNECTION
3.3.9 IEEE C37.94 INTERFACE
The UR-series IEEE C37.94 communication modules (modules types 76, and 77) are designed to interface with IEEE
C37.94 compliant digital multiplexers or an IEEE C37.94 compliant interface converter for use with direct input and output
applications. The IEEE C37.94 standard defines a point-to-point optical link for synchronous data between a multiplexer
and a teleprotection device. This data is typically 64 kbps, but the standard provides for speeds up to 64n kbps, where n =
1, 2,…, 12. The UR-series C37.94 communication modules are either 64 kbps (with n fixed at 1) for 128 kbps (with n fixed
at 2). The frame is a valid International Telecommunications Union (ITU-T) recommended G.704 pattern from the standpoint of framing and data rate. The frame is 256 bits and is repeated at a frame rate of 8000 Hz, with a resultant bit rate of
2048 kbps.
The specifications for the module are as follows:.
GE Multilin L30 Line Current Differential System 3-37
Page 96
3.3 PILOT CHANNEL COMMUNICATIONS 3 HARDWARE
UR-series
device
IEEE C37.94
fiber interface
up to 2 km
842755A2.CDR
Digital
multiplexer,
IEEE C37.94
compliant
UR-series
device
up to 2 km
IEEE C37.94
converter
RS422
interface
842756A2.CDR
IEEE C37.94
fiber interface
Digital
multiplexer
with EIA-422
interface
842753A2.CDR
Internal timing mode
Loop timing mode
(factory default)
• IEEE standard: C37.94 for 2 × 64 kbps optical fiber interface (for 76 and 77 modules)
• Fiber optic cable type: 50 nm or 62.5 µm core diameter optical fiber
• Fiber optic mode: multi-mode
• Fiber optic cable length: up to 2 km
• Fiber optic connector: type ST
• Wavelength: 820 ±40 nm
• Connection: as per all fiber optic connections, a Tx to Rx connection is required
The UR-series C37.94 communication module can be connected directly to any compliant digital multiplexer that supports
the IEEE C37.94 standard as shown below.
3
The UR-series C37.94 communication module can be connected to the electrical interface (G.703, RS422, or X.21) of a
non-compliant digital multiplexer via an optical-to-electrical interface converter that supports the IEEE C37.94 standard, as
shown below.
In 2008, GE Digital Energy released revised modules 76 and 77 for C37.94 communication to enable multi-ended fault
location functionality with firmware 5.60 release and higher. All modules 76 and 77 shipped since the change support this
feature and are fully backward compatible with firmware releases below 5.60. For customers using firmware release 5.60
and higher, the module can be identified with "Rev D" printed on the module and is to be used on all ends of L30 communication for two and three terminal applications. Failure to use it at all ends results in intermittent communication alarms. For
customers using firmware revisions below 5.60, it is not required to match the revision of the modules installed.
The UR-series C37.94 communication module has six switches that are used to set the clock configuration. The functions
of these control switches are shown below.
For the internal timing mode, the system clock is generated internally. Therefore, the timing switch selection should be
internal timing for relay 1 and loop timed for relay 2. There must be only one timing source configured.
For the looped timing mode, the system clock is derived from the received line signal. Therefore, the timing selection
should be in loop timing mode for connections to higher order systems.
The IEEE C37.94 communications module cover removal procedure is as follows:
1. With power to the relay off, remove the IEEE C37.94 module (type 76 or 77 module):
3-38 L30 Line Current Differential System GE Multilin
Page 97
3 HARDWARE 3.3 PILOT CHANNEL COMMUNICATIONS
Cover screw
Top cover
Bottom cover
Ejector/inserter clip
Ejector/inserter clip
Timing selection
switches
Channel 1
Channel 2
FRONT
REAR
831774A3.CDR
Pull the ejector/inserter clips located at the top and at the bottom of each module simultaneously in order to release the
module for removal. Record the original location of the module to help ensure that the same or replacement module is
inserted into the correct slot.
2. Remove the module cover screw.
3. Remove the top cover by sliding it towards the rear and then lift it upwards.
4. Set the timing selection switches (channel 1, channel 2) to the desired timing modes (see description above).
5. Replace the top cover and the cover screw.
6. Re-insert the IEEE C37.94 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 will be fully inserted.
3
Figure 3–41: IEEE C37.94 TIMING SELECTION SWITCH SETTING
GE Multilin L30 Line Current Differential System 3-39
Page 98
3.3 PILOT CHANNEL COMMUNICATIONS 3 HARDWARE
Tx1
Tx2
Rx1
Rx2
Tx1
Tx2
CH1 Link/Activity LED
CH2 Link/Activity LED
COMMS
2B
C37.94SM
1300nm single-mode
ELED
2 channel
Technical support:
Tel: (905)294-6222
Fax: (905)201-2098
(NORTH AMERICA)
1 800 547-8629
Made in Canada
GE Multilin
REV. D
CH1 Clock Configuration LED
CH2 Clock Configuration LED
FRONT VIEW REAR VIEW
842837A1.cdr
Modules shipped from January 2012 have status LEDs that indicate the status of the DIP switches, as shown in the following figure.
3
Figure 3–42: STATUS LEDS
The clock configuration LED status is as follows:
• Flashing green — loop timing mode while receiving a valid data packet
• Flashing yellow — internal mode while receiving a valid data packet
• Solid red — (switch to) internal timing mode while not receiving a valid data packet
The link/activity LED status is as follows:
• Flashing green — FPGA is receiving a valid data packet
• Solid yellow — FPGA is receiving a "yellow bit" and remains yellow for each "yellow bit"
• Solid red — FPGA is not receiving a valid packet or the packet received is invalid
3-40 L30 Line Current Differential System GE Multilin
Page 99
3 HARDWARE 3.3 PILOT CHANNEL COMMUNICATIONS
UR-series
device with
C37.94SM
module
C37.94SM
fiber interface
up to 10 km
UR-series
device with
C37.94SM
module
842758A2.CDR
3.3.10 C37.94SM INTERFACE
The UR-series C37.94SM communication modules (2A and 2B) are designed to interface with modified IEEE C37.94 compliant digital multiplexers or IEEE C37.94 compliant interface converters that have been converted from 820 nm multi-mode
fiber optics to 1300 nm ELED single-mode fiber optics. The IEEE C37.94 standard defines a point-to-point optical link for
synchronous data between a multiplexer and a teleprotection device. This data is typically 64 kbps, but the standard provides for speeds up to 64n kbps, where n = 1, 2,…, 12. The UR-series C37.94SM communication module is 64 kbps only
with n fixed at 1. The frame is a valid International Telecommunications Union (ITU-T) recommended G.704 pattern from
the standpoint of framing and data rate. The frame is 256 bits and is repeated at a frame rate of 8000 Hz, with a resultant bit
rate of 2048 kbps.
The specifications for the module are as follows:
• Emulated IEEE standard: emulates C37.94 for 1 × 64 kbps optical fiber interface (modules set to n = 1 or 64 kbps).
• Fiber optic cable type: 9/125 μm core diameter optical fiber.
• Fiber optic mode: single-mode, ELED compatible with HP HFBR-1315T transmitter and HP HFBR-2316T receiver.
• Fiber optic cable length: up to 11.4 km.
• Fiber optic connector: type ST.
• Wavelength: 1300 ±40 nm.
• Connection: as per all fiber optic connections, a Tx to Rx connection is required.
The UR-series C37.94SM communication module can be connected directly to any compliant digital multiplexer that supports C37.94SM as shown below.
3
It can also can be connected directly to any other UR-series relay with a C37.94SM module as shown below.
In 2008, GE Digital Energy released revised modules 2A and 2B for C37.94SM communication to enable multi-ended fault
location functionality with firmware 5.60 release and higher. All modules 2A and 2B shipped since the change support this
feature and are fully backward compatible with firmware releases below 5.60. For customers using firmware release 5.60
and higher, the module can be identified with "Rev D" printed on the module and is to be used on all ends of L30 communication for two and three terminal applications. Failure to use it at all ends results in intermittent communication alarms. For
customers using firmware revisions below 5.60, it is not required to match the revision of the modules installed.
GE Multilin L30 Line Current Differential System 3-41
Page 100
3.3 PILOT CHANNEL COMMUNICATIONS 3 HARDWARE
842753A2.CDR
Internal timing mode
Loop timing mode
(factory default)
The UR-series C37.94SM communication module has six switches that are used to set the clock configuration. The functions of these control switches are shown below.
For the internal timing mode, the system clock is generated internally. Therefore, the timing switch selection should be
internal timing for relay 1 and loop timed for relay 2. There must be only one timing source configured.
3
For the looped timing mode, the system clock is derived from the received line signal. Therefore, the timing selection
should be in loop timing mode for connections to higher order systems.
The C37.94SM communications module cover removal procedure is as follows:
1. With power to the relay off, remove the C37.94SM module (modules 2A or 2B):
Pull the ejector/inserter clips located at the top and at the bottom of each module simultaneously in order to release the
module for removal. Record the original location of the module to help ensure that the same or replacement module is
inserted into the correct slot.
2. Remove the module cover screw.
3. Remove the top cover by sliding it towards the rear and then lift it upwards.
4. Set the timing selection switches (channel 1, channel 2) to the desired timing modes (see description above).
5. Replace the top cover and the cover screw.
6. Re-insert the C37.94SM 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 will be fully inserted.
3-42 L30 Line Current Differential System GE Multilin
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