Main busbar
power restored
TB close
sequence
TB closed
No
Yes
GB open
sequence
GB opened
No
Yes
Genset stop
sequence
Genset
stopped
No
Yes
Sequence
complete
Frequency &
voltage OK
timer
Alarm
Alarm
Alarm
1.
Frequency & Voltage OK timer:
When power is restored to the main busbar, the
power management system waits for the
Frequency and voltage OK
timer before
starting the
TB close sequence
. This happens automatically when the controller is
in AUTO mode.
2.
TB closed:
When the tie breaker is closed, the controller starts the
GB open
sequence.
3.
GB opened:
When the generator breaker is open, the controller starts the
Genset
stop
sequence.
4.
Genset stopped:
The sequence is complete when the emergency genset
stopped. The controller returns to the mode in
Configure > Parameters > Local
power management > Return modes > After blackout
.
9.8.2 Harbour operation
Harbour operation allows you to use the emergency genset as the ship generator when in harbour.
INFO
You must get class approval for the ship to use harbour operation.
Harbour operation is only available for the EMERGENCY genset controller, and only when it is connected to the DEIF network.
Harbour operation allows the emergency genset to supply the main busbar with power for an extended period. This is typically used
while the ship is docked in harbour, since the emergency genset is typically much smaller than the other gensets, and can therefore
run more efficiently at lower loads.
DESIGNER'S HANDBOOK 4189340911K UK
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