894188A1.cdr
SETPOINTS
SETPOINT
FUNCTION:
Disabled
Trip
PICKUP:
Operate Output Relay 1 (TRIP)
LED: PICKUP
LED: TRIP
O
R
Alarm
Latched Alarm
RUN
SETPOINTS
BLOCK :
Off = 0
LED: ALARM /
LATCHED ALARM
RESET
Command
S
R
LATCH
Configurable
FlexLogic Operands
Timed UV 1 Curve OP
Timed UV 1 PKP
Timed UV 1 PKP C
Timed UV 1 PKP B
Timed UV 1 PKP A
SETPOINTS
MODE: Phase to Ground,
Phase to Phase (for wye
connection)
Phase to Phase (Delta VTs)
RUN
RUN
VA(VAB) < PICKUP
VB(VBC) < PICKUP
VC(VCA) < PICKUP
SETPOINTS
OPERATE:
ANY ONE
ANY TWO
ALL THREE
PHASES FOR
OPERATION:
PICK-UP:
ANY ONE
ANY TWO
ALL THREE
SETPOINTS
MINIMUM VOLTAGE:
VA(VAB) > MINIMUM
VB(VBC) > MINIMUM
VC(VCA) > MINIMUM
A
N
D
Timed UV 1 OP C
Timed UV 1 OP B
Timed UV 1 OP A
MODE:
}
{
{
}
Phase A voltage (VA)
Phase B voltage (VB)
Phase C voltage (VC)
Phase-to-Ground Voltages –
Wye connection
Ph-Ph AB voltage (VAB)
Ph-Ph BC voltage (VBC)
Ph-Ph CA voltage (VCA)
Phase-to-Phase Voltages –
Delta connection
Ph-Ph AB voltage (VAB)
Ph-Ph BC voltage (VBC)
Ph-Ph CA voltage (VCA)
Calculated Phase-to-Phase
Voltages – Wye connection
SETPOINTS
Do Not Operate, Operate
OUTPUT RELAYS 3 to 7
SETPOINTS
SIGNAL INPUT:
NAME( Ph VT Bnk1-J2)
DROPOUT DELAY:
DROPOUT:
Timed UV 1 Cnt OP
From counter based
undervoltage protection logic
OR
}
CURVE LIMIT 1-10:
CURVE TIME 1-10:
Timed UV 1 OP
O
R
A
N
D
A
N
D
A
N
D
O
R
O
R
A
N
D
A
N
D
A
N
D
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