GE UR T60 - Page 327

GE Multilin T60 Transformer Protection System 5-189
5 SETTINGS 5.6 GROUPED ELEMENTS
5
Figure 5–97: PHASE INSTANTANEOUS OVERCURRENT TIMING CURVES
Figure 5–98: PHASE INSTANTANEOUS OVERCURRENT 1 SCHEME LOGIC
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AND
AND
AND
SETTING
= Enabled
= Disabled
Function
SETTING
= IA
Source
= IC
SETTINGS
= Off
Block A
= Off
Block B
= Off
Block C
SETTING
Pickup
RUN
IA > Pickup
RUN
IB > Pickup
RUN
IC > Pickup
= IB
SETTINGS
Pickup Delay
T
PKP
T
RST
Reset Delay
T
PKP
T
RST
T
PKP
T
RST
OR
FLEXLOGIC OPERANDS
PHASE IOC1 A PKP
PHASE IOC1 A DPO
PHASE IOC1 B PKP
PHASE IOC1 B DPO
PHASE IOC1 C PKP
PHASE IOC1 C DPO
PHASE IOC1 PKP
FLEXLOGIC OPERAND
PHASE IOC1 A OP
PHASE IOC1 B OP
PHASE IOC1 C OP
FLEXLOGIC OPERANDS
OR
PHASE IOC1 OP
FLEXLOGIC OPERAND
AND
PHASE IOC1 DPO
FLEXLOGIC OPERAND