GE 750 Instruction Manual page 258

S7 CONTROL
5 - 132
500
400
300
200
PICKUP
100
OUTAGE
0
-1
A cold load condition is initiated and overcurrent settings are altered when all phase
currents drop below 5% of the nominal current for an amount of time greater than the
OUTAGE TIME BEFORE COLD LOAD
immediately initiated by asserting the logic input function 'Cold Load Pickup'. Overcurrent
settings are returned to normal after any phase current is restored to greater than 10% of
nominal and then a timer of duration equal to
NORMAL TRIP SETTING
X
0 1 2 3
LOAD ENERGIZED
FIGURE 5–62: Cold Load Pickup
setpoint. The cold load condition can also be
COLD LOAD PICKUP BLOCK TIME
FIGURE 5–63: Cold Load Pickup Logic
750 FEEDER MANAGEMENT RELAY – INSTRUCTION MANUAL
CHAPTER 5: SETPOINTS
PICKUP
4 5 6
Time (seconds)
expires.