GE L30 Instruction Manual page 6

Line current differential system
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5.6
FlexLogic........................................................................................................5-165
5.6.1
FlexLogic operands........................................................................................................ 5-165
5.6.2
FlexLogic rules.................................................................................................................. 5-177
5.6.3
FlexLogic evaluation...................................................................................................... 5-177
5.6.4
FlexLogic example.......................................................................................................... 5-177
5.6.5
FlexLogic equation editor............................................................................................ 5-182
5.6.6
FlexLogic timers............................................................................................................... 5-182
5.6.7
FlexElements ..................................................................................................................... 5-182
5.6.8
Non-volatile latches....................................................................................................... 5-187
5.7
Grouped elements .......................................................................................5-188
5.7.1
Overview ............................................................................................................................. 5-188
5.7.2
Setting group 1................................................................................................................. 5-188
5.7.3
Line differential elements............................................................................................ 5-189
5.7.4
Phase current ................................................................................................................... 5-194
5.7.5
Neutral current................................................................................................................. 5-206
5.7.6
Ground current ................................................................................................................ 5-214
5.7.7
Negative sequence current........................................................................................ 5-217
5.7.8
Breaker failure (ANSI 50BF)......................................................................................... 5-219
5.7.9
Voltage elements ............................................................................................................ 5-228
5.7.10
Supervising elements.................................................................................................... 5-235
5.8
Control elements .........................................................................................5-238
5.8.1
Overview ............................................................................................................................. 5-238
5.8.2
Trip bus ................................................................................................................................ 5-238
5.8.3
Setting groups .................................................................................................................. 5-240
5.8.4
Selector switch................................................................................................................. 5-241
5.8.5
Underfrequency (ANSI 81U)........................................................................................ 5-248
5.8.6
Frequency rate of change (ANSI 81R).................................................................... 5-249
5.8.7
Synchrocheck (ANSI 25) ............................................................................................... 5-251
5.8.8
Autoreclose (ANSI 79) .................................................................................................... 5-257
5.8.9
Digital elements............................................................................................................... 5-263
5.8.10
Digital counters................................................................................................................ 5-266
5.8.11
Monitoring elements ..................................................................................................... 5-268
5.9
Inputs/outputs .............................................................................................5-282
5.9.1
Contact inputs .................................................................................................................. 5-282
5.9.2
Virtual inputs ..................................................................................................................... 5-284
5.9.3
Contact outputs............................................................................................................... 5-285
5.9.4
Virtual outputs.................................................................................................................. 5-288
5.9.5
Resetting ............................................................................................................................. 5-288
5.9.6
Direct inputs and outputs ........................................................................................... 5-289
5.10 Transducer inputs/outputs........................................................................5-290
5.10.1
DCmA inputs...................................................................................................................... 5-290
5.10.2
RTD inputs .......................................................................................................................... 5-291
5.10.3
DCmA outputs .................................................................................................................. 5-292
5.11 Testing ...........................................................................................................5-296
5.11.1
Test mode function ........................................................................................................ 5-296
5.11.2
Test mode forcing........................................................................................................... 5-297
5.11.3
Phasor Measurement Unit test values.................................................................. 5-297
5.11.4
Force contact inputs ..................................................................................................... 5-298
5.11.5
Force contact outputs .................................................................................................. 5-299
5.11.6
Channel tests .................................................................................................................... 5-299
6.1
Actual Values menu......................................................................................... 6-1
6.2
Front panel........................................................................................................ 6-3
6.3
Status................................................................................................................. 6-4
L30 LINE CURRENT DIFFERENTIAL SYSTEM - INSTRUCTION MANUAL
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