Manual blackout close not possible
During a blackout, the GENSET controller is forced into AUTO mode. Since the GENSET controller is not in SEMI mode, the
operator cannot close the breaker by pushing the push button
Close breaker
on the display unit.
8.5.4 Generator breaker open flowchart
The following flowchart shows the sequence that the controller normally uses to open the generator breaker. This sequence is also
used for the alarm action
PMS-controlled stop
.
INFO
The alarm action
Block
does not open a closed breaker, although it stops an open breaker from closing. If the controller or
an operator sends a GB open command while
Block
is active, the controller uses this sequence.
INFO
The sequence to trip the generator breaker is described in another flowchart.
This flowchart does not apply to switchboard control. When the controller is under switchboard control, it will not open the breaker
(except for a trip). If, for example, the operator presses the push-button
Open breaker
on the display unit, the controller ignores
this command.
DESIGNER'S HANDBOOK 4189340911K UK
Page 302 of 521