Woodward GCP-30 Series Configuration

Manual 37278B GCP-30 Series - Genset Control
© Woodward Page 87/174
The following actions occur in an emergency power operation:
• If emergency power is triggered, the engine is started unless the sequence is interrupted by an alarm or the
change of the operation mode.
• If the mains return during the start cycle, the MCB is not opened. The engine starts and continues running un-
til the mains settling time (Parameter 220) expires. If another mains fault occurs during this time, the MCB is
opened and t
he GCB is closed to the dead busbar. The engine shuts down following the expiration of the
mains settling time (Parameter 220) if no additional mains faults occur.
•
The GCB will be closed regardless of the engine delay time once the dead bus limits have been reached.
• If the mains returns during emergency power operation while the GCB is closed, the MCB will be synchro-
nized after the mains settling time (Parameter 220) has expired.
Emergency power: In the event of an active em
ergency power operation, the message "Emergency power" is
displayed.
Emergency Power With Breaker Logic "PARALLEL"
Emergency power: Following a mains fault the "emergency power start delay" (Parameter 165) must expire be-
fore the engine is started. Once the voltage and frequency limit values are reached, the MCB is opened and the
GCB is closed to the dead busbar. The generator supplies the load.
Return of the mains: Following the return of the mains the control remains in the emergency power operation
until the mains settling time has expired (Parameter 220) before synchronization of the MCB is initiated. After
clo
sing the MCB, the control returns to its original operation mode. If the engine is to be shut down after the
emergency power operation is over, a power reduction (soft unloading) is carried out if the real power controller
(Parameter 87) is configured to ON.
If t
he mains return during the start cycle, the MCB is not opened. The engine remains in idle mode during the
mains settling time (Parameter 220) in order to enable the immediate closing of the GCB in the event of further
m
ains faults.
Emergency Power With Breaker Logic "OPEN TRANSIT."
Emergency power: Following a mains fault the "emergency power start delay" (Parameter 165) must expire be-
fore the engine is started. Once the voltage and frequency limit values are reached, the MCB is opened and the
GCB is closed to the dead busbar. The generator supplies the load.
Return of the mains: Following the return of the mains the control remains in the emergency power operation
until the mains settling time has expired (Parameter 220) before transitioning back (via an open transition/over a
dead busbar) to m
ains supply. If an engine request is present following the expiration of the mains settling time
(Parameter 220), the generator will rem
ain in isolated operation.
If the mains return during the start cycle, the MCB is not opened. The engine remains in idle mode during the
mains settling time (Parameter 220) in order to enable the immediate closing of the GCB in the event of further
m
ains faults.

Woodward GCP-30 Series Specifications

General

Brand	Woodward
Model	GCP-30 Series
Category	Controller
Language	English