Functions
2.22 Circuit Breaker Failure Protection
SIPROTEC, 7SD5, Manual
C53000-G1176-C169-5, Release date 02.2011
405
Address 3913 T2StartCriteria is used to set whether the delay time T2 will be started after expiry of T1
(T2StartCriteria = With exp. of T1) or simultaneously with it (T2StartCriteria = Parallel
withT1). The time T2 can also be initiated via a separate binary input 1424 ā>BF STARTonlyT2ā.
Figure 2-194 Logic diagram of the two-stage breaker failure protection
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