GE L90 Instruction Manual page 830

Ur series line current differential system
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TARGET SETTING ............................................................. 5-5
TARGETS MENU ............................................................... 7-6
TCP PORT NUMBER ........................................................ 5-42
TEMPERATURE MONITOR ................................... 5-131, 7-10
TERMINALS .............................................................. 3-8, 5-78
TESTING
channel tests ............................................................... 5-343
clock synchronization ..................................................... 11-2
final tests ...................................................................... 11-4
force contact inputs ..................................................... 5-341
force contact outputs ................................................... 5-342
lamp test ......................................................................... 7-3
local-remote relay tests .................................................. 11-4
self-test error messages ................................................... 7-6
synchrophasors ........................................................... 5-343
THEORY OF OPERATION ......................................... 9-1, 9-20
THERMAL DEMAND CHARACTERISTIC ........................... 5-57
THERMAL MODEL
Modbus registers ...........................................................B-50
THERMAL OVERLOAD PROTECTION
Modbus registers ...........................................................B-48
settings ....................................................................... 5-281
specifications ................................................................. 2-20
TIME ................................................................................. 7-2
TIME OVERCURRENT
see PHASE, NEUTRAL, and GROUND TOC entries
TIMERS ......................................................................... 5-138
TOC
ground ......................................................................... 5-202
neutral ......................................................................... 5-192
phase .......................................................................... 5-186
specifications ................................................................. 2-17
TRACEABILITY
data ..................................................................... 4-12, 4-13
overview ........................................................................ 4-11
rules .............................................................................. 4-13
TRACKING FREQUENCY ........................................ 6-20, B-52
TRANSDUCER I/O
actual values ................................................................. 6-23
settings .............................................................5-334, 5-335
specifications ................................................................. 2-23
wiring ............................................................................ 3-21
TRIP BUS
FlexLogic operands ...................................................... 5-129
Modbus registers ...........................................................B-54
settings ....................................................................... 5-233
TRIP DECISION EXAMPLE .............................................. 9-18
TRIP LEDs ....................................................................... 5-60
TRIP OUTPUT
FlexLogic operands ...................................................... 5-129
logic ............................................................................ 5-246
Modbus registers ...........................................................B-42
settings ....................................................................... 5-242
specifications................................................................. 2-20
TROUBLE INDICATOR .............................................. 1-17, 7-6
TYPICAL WIRING DIAGRAM .............................................. 3-9
U
UL APPROVAL ................................................................. 2-29
UNAUTHORIZED ACCESS
commands ..................................................................... 5-20
resetting .......................................................................... 7-2
UNBLOCKING SCHEME
Modbus registers ...........................................................B-44
settings ....................................................................... 5-303
x
INDEX
UNDERFREQUENCY
FlexLogic operands ...................................................... 5-129
logic ............................................................................ 5-248
settings ........................................................................ 5-248
specifications .................................................................2-19
UNDERVOLTAGE
auxiliary .........................................................................2-18
phase ................................................................. 2-18, 5-220
UNDERVOLTAGE CHARACTERISTICS ........................... 5-219
UNEXPECTED RESTART ERROR ....................................7-10
UNIT NOT PROGRAMMED ........................................5-71, 7-7
UNPACKING THE RELAY .................................................. 1-1
UPDATING ORDER CODE ................................................. 7-3
URPC
see entry for ENERVISTA UR SETUP
USER-DEFINABLE DISPLAYS
example .........................................................................5-71
invoking and scrolling .....................................................5-69
Modbus registers .................................................. B-28, B-33
settings ................................................................. 5-69, 5-71
specifications .................................................................2-21
USER-PROGRAMMABLE LEDs
custom labeling ..............................................................4-23
defaults..........................................................................4-17
description ............................................................ 4-16, 4-17
Modbus registers ........................................................... B-30
settings ..........................................................................5-60
specifications .................................................................2-21
USER-PROGRAMMABLE PUSHBUTTONS
FlexLogic operands ...................................................... 5-131
Modbus registers .................................................. B-34, B-51
settings ..........................................................................5-63
specifications .................................................................2-21
USER-PROGRAMMABLE SELF TESTS
Modbus registers ........................................................... B-31
settings ..........................................................................5-61
USERST-1 BIT PAIR ....................................................... 5-330
V
VAR-HOURS ........................................................... 2-22, 6-18
VIBRATION TESTING .......................................................2-28
VIRTUAL INPUTS
actual values ................................................................... 6-3
commands ...................................................................... 7-1
FlexLogic operands ...................................................... 5-130
logic ............................................................................ 5-323
Modbus registers .................................................... B-9, B-66
settings ........................................................................ 5-323
VIRTUAL OUTPUTS
actual values ................................................................... 6-5
FlexLogic operands ...................................................... 5-130
Modbus registers ........................................................... B-67
settings ........................................................................ 5-326
VOLTAGE BANKS ............................................................5-74
VOLTAGE DEVIATIONS ...................................................2-28
VOLTAGE ELEMENTS .................................................... 5-219
VOLTAGE METERING
Modbus registers ........................................................... B-13
specifications .................................................................2-22
values ............................................................................6-16
VOLTAGE RESTRAINT CHARACTERISTIC ..................... 5-186
VT FUSE FAILURE
logic ............................................................................ 5-275
Modbus registers ........................................................... B-57
settings ........................................................................ 5-274
L90 Line Current Differential System
GE Multilin

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