Closing Profile 2 Configuration; Cold Load Pickup - S&C IntelliRupter PulseCloser Manual

Closing Profile 2
Configuration

Cold Load Pickup

The Second Closing Profile is typically implemented when difficulties such as false trips
are encountered during closing using the First Closing Profile. The Second Closing Profile
is set up in the same manner as the First Closing Profile. See Figure 59.
Figure 59. The Setup>Protection>Closing Profile 2>Closing Profile 2 – Current>Closing
Profile Main screen.
The Cold Load Pickup modifier increases the Minimum Trip/Low Current Cutoff
values of the Time Overcurrent elements in the active profile configuration when
power is first restored after an extended outage. The modifier values start ramping up
from 100% when the outage duration exceeds the T1 – Start Applying Modifier after
Outage Timer. The ramp-up reaches maximum value at the end of the T2 – Ramp to
Full Modifier Value after T1 Timer. When power is restored and all poles are closed,
the modifier begins ramping down when the T3 – Start Ramping Modifier Down after
Return Timer expires. The modifier returns to the 100% level when the T4 – Modifier
Completely Off after T3 Timer expires. See Figure 60 on page 110.
Protection Setup
S&C Instruction Sheet 766-530 109