GE L90

ii L90 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL
INDEX
Auxiliary overvoltage
FlexLogic operands .......................................................................5-191
logic ......................................................................................................5-308
settings ...............................................................................................5-307
specifications ..................................................................................... 2-37
Auxiliary undervoltage
FlexLogic operands .......................................................................5-191
logic diagram ...................................................................................5-307
settings ...............................................................................................5-306
specifications ..................................................................................... 2-36
Auxiliary voltage channel ............................................................... 3-15
Auxiliary voltage metering ............................................................ 6-19
AWG wire size ................................................... 3-14, 3-35, 3-39, 3-42
B
Back up settings ...................................................................... 5-60, 11-8
Banks ...............................................................................5-8, 5-137, 5-138
Battery
disposal ..............................................................................................11-26
failure message ...................................................................................7-9
replace ................................................................................................11-24
Baud rate ................................................................................................. 5-43
BKR RESTRIKE ELEMENT error message ................................ 7-13
Blinking alarm ....................................................................................... 4-35
BLOCK setting ..........................................................................................5-5
Blocking scheme
application of settings ................................................................... 8-19
FlexLogic operands .......................................................................5-193
logic diagram ...................................................................................5-391
settings ...............................................................................................5-388
Blocking1 scheme
logic diagram ...................................................................................5-393
settings ...............................................................................................5-392
Breaker arcing current
actual values ...................................................................................... 6-33
clearing ........................................................................................5-42, 7-2
FlexAnalogs ............................................................................A-15, A-26
FlexLogic operands .......................................................................5-191
logic diagram ...................................................................................5-355
measurement ..................................................................................5-354
settings ...............................................................................................5-353
specifications ..................................................................................... 2-38
Breaker control
control of two breakers ................................................................. 4-60
dual breaker logic ..........................................................................5-153
FlexLogic operands .......................................................................5-192
settings ...............................................................................................5-150
with IEC 61850 .................................................................................. 5-90
Breaker failure
description ........................................................................................5-294
determination ..................................................................................5-294
FlexLogic operands .......................................................................5-191
logic diagram ....................................................................5-298, 5-299
main path sequence ....................................................................5-295
settings ................................................................................5-292, 5-296
specifications ..................................................................................... 2-38
Breaker flashover
FlexLogic operands ...................................................................... 5-191
logic diagram .................................................................................. 5-360
settings ............................................................................................... 5-356
specifications .....................................................................................2-38
Breaker restrike
FlexLogic operands ...................................................................... 5-192
logic diagram .................................................................................. 5-363
settings ............................................................................................... 5-361
specifications .....................................................................................2-38
Breaker-and-a-half scheme ............................................................5-6
Brightness ................................................................................................5-27
Broken conductor
FlexLogic operands ...................................................................... 5-192
settings ............................................................................................... 5-373
C
C37.94 communications .....................................................3-44, 3-47
Cannot log in .............................................................................................2-9
Caution symbol in Offline Window ............................................4-70
CE certification ......................................................................................2-53
Certification ............................................................................................2-53
Changes ...................................................................................................... D-1
Channel
asymmetry settings ..................................................................... 5-145
banks .....................................................................................5-137, 5-138
communication .................................................................................3-33
monitor .....................................................................................................2-7
Channel tests
actual values .........................................................................................6-7
commands .................................................................................5-42, 7-2
procedure ...............................................................................................9-1
settings ............................................................................................... 5-432
Charging current compensation ............................................. 5-143
CID file, SCD file ............................................................5-75, 5-77, 5-78
CID files .........................................................................................3-65, 5-60
import ................................................................................................. 11-12
import preferences ..........................................................................11-9
Circuit monitoring applications ................................................ 5-348
Cleaning ....................................................................................................2-53
Clear
files and records ............................................................................ 11-29
LEDs ..................................................................................................... 5-421
relay records using IEC 61850 ................................................... 5-95
relay records using settings ........................................................5-41
security logs ...........................................................................................7-6
Clock
actual values .........................................................................................6-9
graphical front panel format ......................................................5-31
IRIG-B .....................................................................................................3-32
PTP ........................................................................................................ 5-109
set on front panel ................................................................................7-3
settings ............................................................................................... 5-108
synchronize several devices .................................................... 5-109