GE 745 Instruction Manual page 311

Transformer protection system
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CHAPTER B: INDEX
745 TRANSFORMER PROTECTION SYSTEM – INSTRUCTION MANUAL
specifications
................................................................................................... 2-7
testing
.................................................................................................... 7-27, 7-28
PHASE OVERCURRENT
.................................................................................... 5-58
PHASE SEQUENCE
........................................................................................... 3-12
PHASE SHIFTS
description
....................................................................................................... 5-24
table
................................................................................................................ 5-24
three-phase transformers
PHASE TIME OVERCURRENT
setpoints
.......................................................................................................... 5-63
specifications
................................................................................................... 2-7
testing
............................................................................................................. 7-25
PHASORS
ABC sequence
................................................................................................... 5-9
ACB sequence
.................................................................................................. 5-10
PICKUP INDICATOR
.......................................................................................... 4-3
PLACING THE RELAY INTO SERVICE
PREFAULT VALUES
......................................................................................... 5-110
PREFERENCES
.................................................................................................. 5-25
PROTECTION SCHEMES
5th harmonic
.......................................................................................... 5-84, 7-53
energization detection
.................................................................................... 7-22
features
............................................................................................................ 2-2
frequency decay
............................................................................................. 5-80
frequency decay rate
...................................................................................... 7-50
ground instantaneous overcurrent
ground time overcurrent
harmonic restrained percent differential
instantaneous differential
insulation aging
............................................................................................... 7-54
negative sequence instantaneous overcurrent
negative sequence time overcurrent
neutral instantaneous overcurrent
neutral time overcurrent
overfrequency
................................................................................................. 7-47
phase instantaneous overcurrent
phase time overcurrent
restricted ground
............................................................................................. 5-72
restricted ground fault
........................................................................... 7-36, 7-38
specifications
................................................................................................... 2-6
THD level
................................................................................................. 5-88, 7-56
underfrequency
............................................................................. 5-79, 7-44, 7-47
volts-per-hertz
........................................................................................ 5-85, 7-52
R
REAR TERMINAL ASSIGNMENTS
REAR TERMINAL LAYOUT
REMOTE RESET MODE
..................................................................................... 7-18
RESETTING
........................................................................................................ 5-29
RESISTANCE GROUNDED WYE WINDING
RESTRICTED GROUND
implementation
............................................................................................... 5-74
setpoints
.......................................................................................................... 5-72
settings example
............................................................................................. 5-74
testing
.................................................................................................... 7-36, 7-38
................................................................................ 5-8
.............................................................. 7-60
............................................... 5-71, 7-35, 7-36
........................................................................ 5-70, 7-32
........................................................ 7-16
...................................................................... 5-57, 7-23
...................................... 5-77, 7-42
...................................................... 5-76, 7-39
............................................... 5-68, 7-31, 7-32
........................................................................ 5-66, 7-29
................................................. 5-65, 7-27, 7-28
.......................................................................... 5-63, 7-25
...................................................................... 3-8
................................................................................. 3-7
...................................................... 5-73
INDEX
vii

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