ABB Relion 670 Series Applications Manual page 343

1MRK 511 401-UEN Rev. K
15.2.2.21 Automatic continuation of the auto reclosing sequence
The auto recloser can be programmed to proceed to the next auto reclosing shots (if multiple
shots are selected) even if start signals are not received from protection functions, but the
circuit breaker is still not closed. This is done by setting
the required delay for the function to proceed without a new start.
15.2.2.22 Thermal overload protection holding the auto recloser back
THOLHOLD input (thermal overload protection holding auto reclosing back) is activated,
If the
it will keep the auto recloser on a hold until it is reset. There may thus be a considerable delay
between start of the auto recloser and the breaker closing command to the circuit breaker. An
external logic limiting the time and sending an inhibit to the
input can also be used to set the auto recloser on hold for a longer or shorter period.
15.2.3 Setting guidelines
15.2.3.1 Configuration
Use the PCM600 configuration tool to configure signals.
Auto recloser function parameters are set via the local HMI or Parameter Setting Tool (PST).
Parameter Setting Tool is a part of PCM600.
Recommendations for input signals
Please see Figure 151, Figure
examples.
BLKOFF
Used to unblock the auto recloser when it has been blocked due to activating
by an unsuccessful auto reclosing attempt if the
BLKON
Used to block the auto recloser, for example, when certain special service conditions arise.
When used, blocking must be reset with
CBCLOSED and CBREADY
These binary inputs should pick-up information from the circuit breaker. At three operating
gears in the circuit breaker (single pole operated circuit breakers) the connection should be
"All poles closed" (series connection of the NO contacts) or "At least one pole open" (parallel
connection of NC contacts). The
for an auto reclosing operation, either Close-Open (CO), or Open-Close-Open (OCO). If the
available signal is of type "circuit breaker not charged" or "not ready", an inverter can be
inserted in front of the
INHIBIT
To this input shall be connected signals that interrupt an auto reclosing cycle or prevent a start
from being accepted. Such signals can come from protection for a line connected shunt
reactor, from transfer trip receive, from back-up protection functions, busbar protection trip
or from breaker failure protection. When the circuit breaker open position is set to start the
auto recloser, then manual opening must also be connected here. The inhibit is often a
combination of signals from external IEDs via the I/O and internal functions. An OR-gate is
then used for the combination.
Bay control REC670
Application manual
152 and Figure
CBREADY is a signal meaning that the circuit breaker is ready
CBREADY input.
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AutoCont = On and tAutoContWait to
INHIBIT input can be used. The
153 and default factory configuration for
BlockByUnsucCl setting is set to On .
BLKOFF .
Section 15
Control
M12391-223 v5
M12391-226 v3
IP14929-1 v1
M12399-3 v3
M12399-7 v10
BLKON input or
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