1MAC309294-MB F Section 5
Control functions
RER620 291
Technical Manual
Figure 147: Initiation input signals
In total, the AR function contains six separate initiation lines used for the initiation or
blocking of the auto-reclose shots.
Figure 148: Signal scheme of auto-reclose operation initiated with protection operate
signal
The auto-reclose shot is initiated with a trip signal of the protection function. The
auto-reclose starts when the protection operate delay time elapses. Normally, all trip and
start signals are used to initiate an auto-reclose shot and trip the circuit breaker. If any of
the input signals INIT_X are used for blocking, the corresponding bit in the Tripping line
setting must be FALSE. This is to ensure that the circuit breaker does not trip from that
signal, that is, the signal does not activate the OPEN_CB output. The default value for the
INPUT to CBB’s
Initiation signal (bit 1)
INIT_1
Initiation signal
Tripping line
AND
(bitwise)
OPEN_CB
> 0
Initiation signal (bit 2)
INIT_2
Initiation signal (bit 3)
INIT_3
Initiation signal (bit 4)
INIT_4
Initiation signal (bit 5)
INIT_5
Initiation signal (bit 6)
INIT_6
Instant of
fault
INIT_1
Operate signal
from protection
Start signal from
protection
OPEN_CB
CLOSE_CB
Operate delay time Reclose time Reclaim time
Circuit breaker (CB) status
CLOSED OPEN CLOSED
Protection
pick-up
Protection trip /
operate
CB reclose
command
Succesful
reclosing
ACTIVE
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