Woodward GCP-30 Series Configuration

Manual 37278B GCP-30 Series - Genset Control
Page 88/174 © Woodward
Emergency Power With Breaker Logic "CLOSED 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). Synchronization of the MCB (via a closed transi-
tion/over a live busbar) to m
ains supply is initiated if no engine request is present. Following the closure of the
MCB, the GCB is opened immediately and without
any power reduction (soft unloading). If an engine request is
present following the expiration of the mains settling time (Parameter 220), the generator will remain in isolated
operat
ion.
If the mains return during the start cycle, the MCB is not opened. The engine operates 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 "INTERCHANGE"
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). Synchronization of the MCB (via a closed transi-
tion/over a live busbar) to m
ains supply is initiated if no engine request is present. Following the closure of the
MCB, the GCB is opened after
a power reduction (soft unloading) is performed if the real power controller
(Parameter 87) is configured to "ON". If an engine request is p
resent following the expiration of the mains set-
tling 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 operates 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 "EXTERNAL"
ATTENTION
This breaker logic will not permit emergency power in accordance with DIN VDE 0108!
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 lim
it values are reached, the MCB is opened and the
GCB is closed to the dead busbar. The generator supplies the load. No further operation of the GCB and the
MCB are performed, regardless if the mains return.
Emergency power With MCB Malfunction
MCB malfunction: In the operation mode AUTOMATIC without a starting request, the control is in emergency
power standby. If the MCB opens without initiation, the control attempts to reclose the breaker. If the MCB can-
not be reclosed due to an MCB failure, the engine is started and the alarm message "MCB malfunction" is dis-
played, if Parameter 163 ("Emergency power") and Parameter 158 ("Supervision MCB") are configured to "ON".
The GC
B is closed and emergency power subsequently supplies the busbar. Following acknowledgement of the
"MCB malfunction" alarm, the MCB synchronized from generator supply to mains supply and the engine shut
down after the expiration of the mains settling time (Parameter 220).

Woodward GCP-30 Series Specifications

General

Brand	Woodward
Model	GCP-30 Series
Category	Controller
Language	English