Woodward GCP-20 Series User Manual

Manual 37128A GCP-20 Series - Genset Control
© Woodward Page 99/190
Overview [GCP-20/22]
STOP TEST MANUAL AUTOMATIC
EXTERNAL: Breaker logic "External"
The MCB and the GCB are operated in MANUAL operation mode only in this breaker logic mode. In a mains parallel opera-
tion, uncoupling from the mains is carried out via the MCB or the GCB in the event of a mains failure. The breakers will not
automatically close in emergency power operation. Emergency power operation in accordance with European Community
Specification DIN VDE 0108 is not possible in this power circuit breaker logic.
The GCB is ope-
ned.
The GCB and the MCB are not
operated. ,
Exception
: The breakers are
opened for decoupling from the
mains.
The MCB and the GCB may be
manually opened and closed
without synchronization. The cir-
cuit breakers are opened for de-
coupling from the mains.
The GCB is opened if the genset
is stopped or if decoupling from
the mains, but will not close if
the engine is started. The MCB is
opened only if decoupling from
the mains, and is never closed.
[GCP-22 only] PARALLEL: Breaker logic "Mains parallel operation"
The MCB and GCB are synchronized to permit continuous mains parallel operation in this breaker logic mode.
The GCB is ope-
ned; the MCB is
not operated.
The GCB and the MCB are not
operated.
Exception
: Load test by actuating
the "GCB ON" push-button.
Termination of the load test with
the "GCB OFF" push-button.
Emergency power:
Automatic
closing of the GCB. If there is a
dead busbar and terminal 53 "En-
able MCB" is energized, the
MCB will be closed.
Mains parallel operation can be
initiated by pressing the "GCB
ON" or "MCB ON" push-button.
The GCB is synchronized via an
add-on request and a mains paral-
lel operation is performed. When
a shed-off request is issued, the
generator sheds load and opens
the GCB and the engine is shut
down following the configured
cool down period.
Emergency power:
The emer-
gency power operation is termi-
nated following the expiration of
the mains settling time. The
MCB is synchronized and closed,
putting the system back into a
mains parallel operation.
OPEN TRANS.: Breaker logic "Open transition / ATS / change-over / brake-before-make"
The MCB and GCB are never synchronized in this breaker logic mode.
The GCB is ope-
ned; the MCB is
not operated.
The GCB and the MCB are not
operated.
Exception
: Load test by actuating
the "GCB ON" push-button.
Termination of the load test via
the "GCB OFF" or "MCB ON"
push-button(s).
Emergency power
: Automatic
closing of the GCB. If there is a
dead busbar and terminal 53 "En-
able MCB" is energized, the
MCB will be closed.
A change can be made to either
generator or mains operation by
pressing either the "GCB ON" or
"MCB ON" push-button. The
"STOP" push-button opens the
GCB and simultaneously stops
the engine.
A change is made to generator
operation through an add-on re-
quest. Once the add-on request is
terminated, the system changes
back to mains operation. The
MCB is closed when the busbar
is dead, even if there has not been
an add-on request. Emergency
power operations are terminated
following the expiration of the
mains settling timer. The GCB
opens and the MCB closes, trans-
ferring all loads to the mains.

Woodward GCP-20 Series Specifications

General

Brand	Woodward
Model	GCP-20 Series
Category	Control Unit
Language	English