GE G30 Instruction Manual page 6
Generator protection system 7.6x
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- Instruction manual (614 pages)
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5.5.6
Disconnect switch control .......................................................................................... 5-163
5.5.7
FlexCurves .......................................................................................................................... 5-168
5.6
FlexLogic.............................................................................................................. 5-175
5.6.1
FlexLogic operands........................................................................................................ 5-175
5.6.2
FlexLogic rules.................................................................................................................. 5-188
5.6.3
FlexLogic evaluation...................................................................................................... 5-188
5.6.4
FlexLogic example.......................................................................................................... 5-189
5.6.5
FlexLogic equation editor............................................................................................ 5-194
5.6.6
FlexLogic timers............................................................................................................... 5-194
5.6.7
FlexElements ..................................................................................................................... 5-194
5.6.8
Non-volatile latches....................................................................................................... 5-198
5.7
Grouped elements ............................................................................................. 5-199
5.7.1
Overview ............................................................................................................................. 5-199
5.7.2
Setting group 1................................................................................................................. 5-200
5.7.3
Transformer....................................................................................................................... 5-200
5.7.4
Phase current ................................................................................................................... 5-208
5.7.5
Neutral current................................................................................................................. 5-220
5.7.6
Ground current ................................................................................................................ 5-228
5.7.7
Negative sequence current........................................................................................ 5-235
5.7.8
Generator unbalance (ANSI 46)................................................................................ 5-239
5.7.9
Split phase protection (ANSI 50SP).......................................................................... 5-241
5.7.10
Voltage elements ............................................................................................................ 5-245
5.7.11
Loss of excitation (ANSI 40) ........................................................................................ 5-257
5.7.12
Accidental energization (ANSI 50/27) .................................................................... 5-259
5.7.13
Sensitive directional power (ANSI 32) .................................................................... 5-261
5.7.14
Stator ground.................................................................................................................... 5-264
5.8
Control elements ............................................................................................... 5-266
5.8.1
Overview ............................................................................................................................. 5-266
5.8.2
Trip bus ................................................................................................................................ 5-267
5.8.3
Setting groups .................................................................................................................. 5-269
5.8.4
Selector switch................................................................................................................. 5-270
5.8.5
Underfrequency (ANSI 81U)........................................................................................ 5-277
5.8.6
Overfrequency (ANSI 81O) .......................................................................................... 5-278
5.8.7
Frequency rate of change (ANSI 81R).................................................................... 5-279
5.8.8
Frequency out-of-band accumulation ................................................................. 5-281
5.8.9
Synchrocheck (ANSI 25) ............................................................................................... 5-282
5.8.10
Digital elements............................................................................................................... 5-288
5.8.11
Digital counters................................................................................................................ 5-291
5.8.12
Monitoring elements ..................................................................................................... 5-293
5.9
Inputs/outputs ................................................................................................... 5-302
5.9.1
Contact inputs .................................................................................................................. 5-302
5.9.2
Virtual inputs ..................................................................................................................... 5-304
5.9.3
Contact outputs............................................................................................................... 5-305
5.9.4
Virtual outputs.................................................................................................................. 5-309
5.9.5
Resetting ............................................................................................................................. 5-309
5.9.6
Direct inputs and outputs ........................................................................................... 5-310
5.9.7
Teleprotection................................................................................................................... 5-314
5.10 Transducer inputs/outputs.............................................................................. 5-316
5.10.1
DCmA inputs...................................................................................................................... 5-316
5.10.2
RTD inputs .......................................................................................................................... 5-317
5.10.3
DCmA outputs .................................................................................................................. 5-318
5.11 Testing ................................................................................................................. 5-322
5.11.1
Test mode function ........................................................................................................ 5-322
5.11.2
Test mode forcing........................................................................................................... 5-322
5.11.3
Force contact inputs ..................................................................................................... 5-323
5.11.4
Force contact outputs .................................................................................................. 5-323
G30 GENERATOR PROTECTION SYSTEM - INSTRUCTION MANUAL
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