GE L90 Instruction Manual page 5
Ur series line current differential system
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- Instruction manual (900 pages) ,
- Communications manual (532 pages) ,
- Instruction manual (752 pages)
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TABLE OF CONTENTS
5.2.8
FAULT REPORTS ........................................................................................... 5-50
5.2.9
OSCILLOGRAPHY .......................................................................................... 5-52
5.2.10
DATA LOGGER ............................................................................................... 5-55
5.2.11
DEMAND.......................................................................................................... 5-56
5.2.12
USER-PROGRAMMABLE LEDS..................................................................... 5-57
5.2.13
USER-PROGRAMMABLE SELF-TESTS ........................................................ 5-61
5.2.14
CONTROL PUSHBUTTONS ........................................................................... 5-61
5.2.15
USER-PROGRAMMABLE PUSHBUTTONS ................................................... 5-63
5.2.16
FLEX STATE PARAMETERS .......................................................................... 5-68
5.2.17
USER-DEFINABLE DISPLAYS ....................................................................... 5-69
5.2.18
INSTALLATION................................................................................................ 5-71
5.3 REMOTE RESOURCES
5.3.1
REMOTE RESOURCES CONFIGURATION ................................................... 5-72
5.4.1
AC INPUTS ...................................................................................................... 5-73
5.4.2
POWER SYSTEM............................................................................................ 5-74
5.4.3
SIGNAL SOURCES ......................................................................................... 5-75
5.4.4
L90 POWER SYSTEM..................................................................................... 5-78
5.4.5
BREAKERS...................................................................................................... 5-83
5.4.6
DISCONNECT SWITCHES ............................................................................. 5-87
5.4.7
FLEXCURVES™.............................................................................................. 5-90
5.4.8
PHASOR MEASUREMENT UNIT.................................................................... 5-97
5.5.1
INTRODUCTION TO FLEXLOGIC ................................................................ 5-120
5.5.2
FLEXLOGIC RULES ...................................................................................... 5-132
5.5.3
FLEXLOGIC EVALUATION ........................................................................... 5-133
5.5.4
FLEXLOGIC EXAMPLE ................................................................................. 5-133
5.5.5
FLEXLOGIC EQUATION EDITOR................................................................. 5-138
5.5.6
FLEXLOGIC TIMERS .................................................................................... 5-138
5.5.7
FLEXELEMENTS........................................................................................... 5-139
5.5.8
NON-VOLATILE LATCHES ........................................................................... 5-143
5.6.1
OVERVIEW.................................................................................................... 5-144
5.6.2
SETTING GROUP ......................................................................................... 5-144
5.6.3
LINE DIFFERENTIAL ELEMENT................................................................... 5-145
5.6.4
LINE PICKUP................................................................................................. 5-150
5.6.5
DISTANCE ..................................................................................................... 5-152
5.6.6
POWER SWING DETECT ............................................................................. 5-170
5.6.7
LOAD ENCROACHMENT.............................................................................. 5-179
5.6.8
PHASE CURRENT ........................................................................................ 5-181
5.6.9
NEUTRAL CURRENT.................................................................................... 5-191
5.6.10
WATTMETRIC GROUND FAULT .................................................................. 5-199
5.6.11
GROUND CURRENT..................................................................................... 5-202
5.6.12
NEGATIVE SEQUENCE CURRENT ............................................................. 5-204
5.6.13
BREAKER FAILURE ...................................................................................... 5-210
5.6.14
VOLTAGE ELEMENTS .................................................................................. 5-219
5.6.15
SENSITIVE DIRECTIONAL POWER............................................................. 5-225
5.6.16
SUPERVISING ELEMENTS .......................................................................... 5-229
5.7.1
OVERVIEW.................................................................................................... 5-233
5.7.2
TRIP BUS....................................................................................................... 5-233
5.7.3
SETTING GROUPS ....................................................................................... 5-235
5.7.4
SELECTOR SWITCH..................................................................................... 5-236
5.7.5
TRIP OUTPUT ............................................................................................... 5-242
5.7.6
UNDERFREQUENCY.................................................................................... 5-248
5.7.7
OVERFREQUENCY ...................................................................................... 5-249
5.7.8
FREQUENCY RATE OF CHANGE................................................................ 5-250
5.7.9
SYNCHROCHECK......................................................................................... 5-252
5.7.10
DIGITAL ELEMENTS..................................................................................... 5-256
5.7.11
DIGITAL COUNTERS .................................................................................... 5-259
5.7.12
MONITORING ELEMENTS ........................................................................... 5-261
5.7.13
PILOT SCHEMES .......................................................................................... 5-284
5.7.14
AUTORECLOSE ............................................................................................ 5-308
L90 Line Current Differential System
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