Circuit Breaker Failure Protection
131
7SS52 V4 Manual
C53000-G1176-C182-3
T-TRIP repeat The parameter T-TRIP repeat (XX25/CU) is used to delay the feeder-selective rep-
etition of the TRIP command issued by the breaker failure protection.
The time for the TRIP repetition must be set to less than the delay times for the breaker
failure protection T-BF-1P (XX20/CU), T-BF-mP (XX21/CU) and for the pulse mode
T-BF IMP (XX23A/CU).
T-BF rel sup If the parameter BF BI MODE (XX14/CU) is set to with supervision, the the
parameter T-BF rel sup (XX27/CU)is used to set the time for supervising the du-
ration of the CBF release signal.
T-BF 2chan The parameter T-BF 2chan (XX28/CU) is used to set the supervision delay during
which, counting from the initiation moment, the release signals for the breaker failure
protection must be issued.
Note
Many of the above parameters are also used for other functions, such as
“Monitoring“ or for the description of the “Bay Unit“ (Chapter 5.10, page 177).
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