Siemens SIPROTEC 7UT613 series Manual page 192

2 Functions
Figure 2-82 Cold Load Pickup Timing Sequence
192
made with the „normal" setpoints. The function is inactive and the fast reset time, if ap-
plied, is reset.
If overcurrent elements are picked up while Active Time is running, the fault gener-
ally prevails until pickup drops out, using the dynamic pickup values. Only then are the
parameters set back to „normal".
If the dynamic cold load pickup function is blocked via the binary input all triggered
timers will be immediately reset and all „normal" settings will be restored. If blocking
occurs during an on-going fault with dynamic cold load pickup functions enabled, the
timers of all overcurrent stages will be stopped, and then restarted based on their „nor-
mal" duration.
During power up of the protective relay with an open circuit breaker, the time delay CB
Open Time is started, and is processed using the „normal" settings. Therefore, when
the circuit breaker is closed, the „normal" settings are effective.
7UT613/63x Manual
C53000-G1176-C160-2