GE 750 Instruction Manual page 331

operating characteristics ................................................ 5-46
operating regions .......................................................... 7-24
setpoints ....................................................................... 5-46
test connections ............................................................ 7-25
voltage polarizing .......................................................... 5-47
NEUTRAL DISPLACEMENT
logic diagram ................................................................. 5-69
protection scheme ......................................................... 7-32
setpoints ....................................................................... 5-68
NEUTRAL INSTANTANEOUS OVERCURRENT
logic diagram ................................................................. 5-45
protection scheme ......................................................... 7-23
setpoints ....................................................................... 5-45
setting example ............................................................. 1-22
NEUTRAL OVERCURRENT
setpoints ....................................................................... 5-43
NEUTRAL TIME OVERCURRENT
logic diagram ................................................................. 5-44
protection scheme ......................................................... 7-23
setpoints ....................................................................... 5-44
setting example ............................................................. 1-21
NON-LINEAR RESISTOR
in restricted earth fault ................................................... 5-58
NUMERICAL SETPOINTS .................................................. 1-6
O
ON-LOAD TESTING ......................................................... 7-64
ORDER CODES ................................................................. 2-6
OUTPUT RELAYS
operation ....................................................................... 5-27
setpoints ............................................................. 5-27, 5-133
testing ........................................................................... 7-11
tests ............................................................................... 7-5
OUTPUT STATUS INDICATORS ........................................ 4-4
OUTPUTS
analog ............................................... 5-87, 5-88, 5-134, 7-42
SCR .............................................................................. 3-13
specifications ................................................................ 2-12
OVERCURRENT
blocking ........................................................................ 5-25
directional .............................................................5-40, 5-41
ground .......................................................................... 5-48
ground directional ..................................................5-51, 5-52
ground instantaneous .................................................... 5-50
ground time ................................................................... 5-49
negative sequence directional ....................... 5-62, 5-63, 7-27
negative sequence instantaneous ..........................5-61, 7-27
negative sequence time .........................................5-60, 7-27
neutral .......................................................................... 5-43
neutral directional ......................................... 5-46, 5-48, 7-24
neutral instantaneous ............................................5-45, 7-23
neutral time ...........................................................5-44, 7-23
phase directional ................................. 5-40, 5-41, 5-43, 7-22
phase instantaneous ..................................... 5-39, 7-20, 7-21
phase time ................................................... 5-37, 7-18, 7-20
sensitive ground directional .......................... 5-55, 5-56, 7-27
sensitive ground instantaneous ..............................5-54, 7-27
sensitive ground time .............................................5-53, 7-26
OVERFREQUENCY
logic diagram ................................................................. 5-90
monitoring ..................................................................... 7-40
setpoints ....................................................................... 5-89
OVERVIEW ....................................................................... 2-1
OVERVOLTAGE
logic diagram ................................................................. 5-68
GE Multilin
protection scheme .......................................................... 7-31
setpoints........................................................................ 5-67
P
PANEL CUTOUTS .............................................................. 3-2
PASSCODE SECURITY ...................................................... 5-5
PASSCODE SETPOINTS .................................................... 5-7
PHASE A CURRENT DEMAND ................................ 6-13, 6-14
PHASE CURRENT
logic diagram ................................................................. 5-74
monitoring ..................................................................... 7-36
setpoints........................................................................ 5-74
PHASE DIRECTIONAL OVERCURRENT
forward operating regions ............................................... 7-22
logic diagram ................................................................. 5-43
operating characteristics ................................................ 5-41
protection scheme .......................................................... 7-21
setpoints........................................................................ 5-40
PHASE INSTANTANEOUS OVERCURRENT
logic diagram ................................................................. 5-40
protection scheme ................................................. 7-20, 7-21
setpoints........................................................................ 5-39
setting example ............................................................. 1-21
PHASE OVERCURRENT .................................................. 5-37
PHASE SEQUENCE ........................................................... 3-8
PHASE TIME OVERCURRENT
logic diagram ........................................................ 5-38, 5-39
protection scheme ................................................. 7-18, 7-20
setpoints........................................................................ 5-37
voltage restraint characteristic ........................................ 5-38
PHASORS .......................................................................... 2-4
PHONE NUMBERS ............................................................. 1-1
PHYSICAL SPECIFICATIONS ........................................... 2-13
PICKUP TEST
logic diagram ............................................................... 5-134
setpoints...................................................................... 5-134
PLACING THE RELAY IN SERVICE .................................. 7-63
PORT SETUP ..................................................................... 5-8
POSTFAULT VALUES .................................................... 5-138
POWER
actual values ................................................................. 6-12
quantity relationships ....................................................... 6-8
POWER FACTOR
logic diagram ................................................................. 5-77
measurement ................................................................. 7-15
monitoring ..................................................................... 7-40
setpoints........................................................................ 5-75
POWER QUANTITY RELATIONSHIPS ................................ 6-8
POWER SYSTEM SETPOINTS ......................................... 5-18
PREFAULT VALUES ...................................................... 5-137
PRODUCT OVERVIEW ....................................................... 2-1
PRODUCT SELECTOR ....................................................... 2-6
PROTECTION ELEMENTS
description ....................................................................... 2-4
one-line diagram .............................................................. 2-3
specifications ................................................................... 2-8
theory of operation ........................................................... 2-4
PROTECTION ONE LINE DIAGRAM ................................... 2-3
PROTECTION SCHEMES
description ..................................................................... 7-17
frequency decay ............................................................ 7-34
ground directional overcurrent ........................................ 7-26
ground instantaneous overcurrent ................................... 7-26
ground time overcurrent ................................................. 7-26
line undervoltage ........................................................... 7-30
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