GE UR T60, Instruction Manual

Page: 325 / 724

GE Multilin T60 Transformer Protection System 5-187
5 SETTINGS 5.6 GROUPED ELEMENTS
5
Figure 5–95: PHASE TIME OVERCURRENT VOLTAGE RESTRAINT CHARACTERISTIC
Figure 5–96: PHASE TIME OVERCURRENT 1 SCHEME LOGIC
0 . 1
0 . 2
0 . 3
0 .4
0 .5
0 .6
0 .7
0 .8
0 .9
1 . 0
0 . 1 0 . 2 0 . 3 0 .4 0 .5 0 .6 0 .7 0 .8 0 .9 1 . 0
0
818784A4.CDR
Multiplier
for
Pickup
Current
Phase-Phase Voltage ÷ VT Nominal Phase-phase Voltage
SETTING
SETTING
SETTING
SETTING
SETTING
MULTIPLY INPUTS
FLEXLOGIC OPERAND
SETTING
PHASE TOC1
FUNCTION:
PHASE TOC1
BLOCK-A :
PHASE TOC1
BLOCK-C:
PHASE TOC1
BLOCK-B:
PHASE TOC1 VOLT
RESTRAINT:
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
PHASE TOC1 PKP
PHASE TOC1 OP
PHASE TOC1
SOURCE:
PHASE TOC1
RESET:
PHASE TOC1
CURVE:
PHASE TOC1
PICKUP:
PHASE TOC1
INPUT:
I A
Seq=ABC Seq=ACB
Set
Multiplier
Set
Multiplier
Set
Multiplier
Set Pickup
Multiplier-Phase A
Calculate
Calculate
Calculate
Set Pickup
Multiplier-Phase B
Set Pickup
Multiplier-Phase C
RUN
I B
VAB VAC
RUN
I C
VBC VBA
VCA VCB
RUN
Off=0
Off=0
Off=0
Enabled
Enabled=1
Disabled=0
OR
AND
AND
AND
OR
827072A4.CDR
PHASE TOC1
TD MULTIPLIER:
RUN
RUN
RUN
I A PICKUP
t
t
t
I B PICKUP
I C PICKUP
SETTING
PHASE TOC1 DPO AND