ABB RELION 650 SERIES, Technical Manual

Page: 367 / 942

• input signal SYNC is true, which typically indicates that power systems on the
two sides of the circuit breaker are in synchronism
• and that input signal CBREADY is true, typically indicating that circuit
breaker springs are charged.
If a circuit breaker close command is given successfully at the end of the dead
time, a reclaim time starts. If the circuit breaker does not trip again within reclaim
time, the auto recloser indicates a successful reclosing and resets into "ready"
status. If the protection trips again during the reclaim time, the sequence advances
to the next shot. If all reclosing attempts have been made and the circuit breaker
does not remain closed, the auto recloser indicates an unsuccessful reclosing. Each
time a breaker close command is given, a shot counter is incremented by one.
Operation Off and On
GUID-D868C9CF-CDB1-48AA-8B31-60C447FBD1D3 v1
The auto recloser can be switched Off or On with a setting or by external control
inputs. With the setting
Operation = On , the auto recloser is activated and with the
setting Operation = Off it is deactivated. With the settings Operation = On and
ExternalCtrl = On , the activation and deactivation is made by signal pulses to the
ON and OFF inputs, for example, from a control system or by a control switch.
If the input conditions CBCLOSED and CBREADY , from the circuit breaker, are
not fulfilled while switching the auto recloser on, the auto recloser changes into
“inactive” status and the output
SETON is activated (high). The auto recloser is not
ready for auto reclosing. If, however, the circuit breaker is closed and ready when
switching the auto recloser on, the output
READY is activated and the function is
prepared to start the auto reclosing cycle. The circuit breaker must have been
closed for at least the set value for setting
tCBClosedMin before a start is accepted.
The logic for Off or On operation is shown in Figure 176 .
1MRK 506 382-UEN A
Section 11
Control
Line distance protection REL650 2.2 IEC 361
Technical manual