TB MRI(K)3-C 03.02 E
15
4.4.10 Time sequence diagrams of
MRIK3-C
Legend:
4.4.11 The unit is programmed for two shots, successful AR at the second shot
Figure 4.1: Two shots, second AR successful
In case of a short circuit an energizing follows with
subsequent tripping of the protection relay. The circuit
breaker is switched off and the short circuit is cleared.
After expiration of the dead time t
D1
unit
MRIK3-C
gives the reclosing command to the circuit breaker.
If the fault still exists the protection relay trips again
and the above mentioned procedure is repeated as
long until either the fault was removed (here after the
second reclosing) or the number of the set SHOTs is
reached.
