Woodward GCP-20 Series User Manual

Manual 37128A GCP-20 Series - Genset Control
© Woodward Page 43/190
Close GCB without Synchronization (Dead Bus Operation GCB)
The generator power circuit breaker is closed without synchronization if the following conditions are met simul-
taneously:
Automatic operation
• the "AUTOMATIC" operating mode is selected
• no alarm class 2 or 3 alarm is present
• the release of "Dead bus operation GCB" is set to "ON" while in configuration mode
• no voltage is applied to the busbar or busbar voltage is below 20V
• the genset is running, and the generator voltage and frequency are within the preset lim-
its (refer to
Parameter 120 and Parameter 121)
• the "response: MCB is open" exists (the MCB is open)
• with a load sharing via CAN-Bus (Woodward units)
- none of the GCBs may be closed if a isolated operation in parallel with other gensets
is possible
- the unit with the lowest unit number will be the first to close its GCB
Manual operation
• "MANUAL" operating mode has been selected
• no alarm class 2 or 3 alarm is present
• no voltage is applied to the busbar or busbar voltage is below 20V
• the genset is running, and the generator voltage and frequency are within the preset lim-
its (refer to
Parameter 120 and Parameter 121)
• the "response: MCB is open" exists (the MCB is open)
• with a load sharing via CAN-Bus (Woodward units)
- none of the GCBs may be closed if an isolated operation in parallel with other gen-
sets is possible,
- the unit with the lowest unit number will be the first to close its GCB
Generator monitors
switched off
If the generator monitors are switched off, the switch logic and the control system are con-
trolled by internally defined limit values.
Generator monitor Voltage Frequency
ON Monitor values Monitor values
OFF V
Gen.
< 75 % V
rated
V
Gen.
> 115 % V
rated
f
Gen.
< 88 % f
rated
f
Gen.
> 112 % f
rated
Table 7-2: Generator monitors

Woodward GCP-20 Series Specifications

General

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