ABB RER620 Technical Manual page 297

1MAC309294-MB F
RER620
Technical Manual
INIT_1
INIT_2
INIT_3
INIT_4
INIT_5
INIT_6
AND
(bitwise)
Tripping line
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.
Instant of
fault
Start signal from
protection
INIT_1 Operate signal
from protection
OPEN_CB
CLOSE_CB
ACTIVE
Circuit breaker (CB) status
Protection
pick-up
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
Initiation signal (bit 1)
Initiation signal (bit 2)
Initiation signal (bit 3)
INPUT to CBB's
Initiation signal (bit 4)
Initiation signal (bit 5)
Initiation signal (bit 6)
Initiation signal
OPEN_CB
> 0
Operate delay time Reclose time
CLOSED
Protection trip /
operate
Section 5
Control functions
Reclaim time
OPEN CLOSED
CB reclose
Succesful
command
reclosing
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