GE L60 Instruction Manual page 307

Line phase comparison system, ur series
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5 SETTINGS
Figure 5–84: PHASE TIME OVERCURRENT VOLTAGE RESTRAINT CHARACTERISTIC
SETTING
PHASE TOC1
FUNCTION:
Disabled=0
Enabled=1
SETTING
PHASE TOC1
BLOCK-A :
Off=0
SETTING
PHASE TOC1
BLOCK-B:
Off=0
SETTING
PHASE TOC1
BLOCK-C:
Off=0
SETTING
PHASE TOC1
SOURCE:
A
B
C
Seq=ABC Seq=ACB
RUN
Set
VAB
VAC
Calculate
Multiplier
RUN
Set
VBC
VBA
Calculate
Multiplier
RUN
Set
VCA
VCB
Calculate
Multiplier
SETTING
PHASE TOC1 VOLT
RESTRAINT:
Enabled
Figure 5–85: PHASE TIME OVERCURRENT 1 SCHEME LOGIC
GE Multilin
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
0.1
0.2
0.3
0.4
Phase-Phase Voltage ÷ VT Nominal Phase-phase Voltage
MULTIPLY INPUTS
Set Pickup
Multiplier-Phase A
Set Pickup
Multiplier-Phase B
Set Pickup
Multiplier-Phase C
L60 Line Phase Comparison System
0.5
0.6
0.7
0.8
0.9
1.0
818784A4.CDR
SETTING
PHASE TOC1
INPUT:
PHASE TOC1
PICKUP:
PHASE TOC1
CURVE:
PHASE TOC1
TD MULTIPLIER:
PHASE TOC1
RESET:
AND
RUN
A
PICKUP
t
AND
RUN
B
PICKUP
t
AND
RUN
C
PICKUP
t
5.5 GROUPED ELEMENTS
FLEXLOGIC OPERAND
PHASE TOC1 A PKP
PHASE TOC1 A DPO
PHASE TOC1 A OP
PHASE TOC1 B PKP
PHASE TOC1 B DPO
PHASE TOC1 B OP
PHASE TOC1 C PKP
PHASE TOC1 C DPO
PHASE TOC1 C OP
OR
PHASE TOC1 PKP
OR
PHASE TOC1 OP
AND
PHASE TOC1 DPO
827072A4.CDR
5-169
5

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