ABB REL670 2.2 IEC, Applications Manual

Page: 639 / 908

should take the duration of the breaker closing time of the master into
consideration before sending the breaker closing command. A setting
tWaitForMaster sets a maximum wait time for the WAIT input to reset. If the wait
time expires, the reclosing cycle of the slave is inhibited. If auto reclosing of the
first breaker is unsuccessful, the
UNSUCCL output connected to the INHIBIT input
of the slave unit interrupts the auto reclosing sequence of the latter.
The signals can be cross-connected to allow simple changing of the
priority by just setting the High and the Low priorities without
changing the configuration. The input
CBCLOSED for each circuit
breaker is important in multi-breaker arrangements to ensure that
the circuit breaker was closed at the beginning of the cycle. If the
High priority circuit breaker is not closed the High priority moves
to the low priority circuit breaker.
1MRK 506 369-UEN B
Section 15
Control
Line distance protection REL670 2.2 IEC 633
Application manual