16
TB MRIK3 12.00 E
4.6.3
Manual closing of the circuit breaker to faulty lines
Short
circuit
Protection
energized
Protection
tripped
Circuit breaker
Switch on
command
Manual on
Protection tripped
Figure 4.3: Manual closing of the C.B. to faulty lines
Unit
MRIK3
is in "inactive" status when the circuit
breaker is switched off. When the C.B. is manually
closed the reclaim time is started. In case there is a
faulty line the C.B. is switched off by mains protection
of the relay. After elapse of the reclaim time unit
MRIK3
changes over to "inactive" status.
4.6.4
Unsuccessful AR
Figure 4.4: Unsuccessful AR
The sequence diagram illustrates the various possibilities
of an unsuccessful AR.
