Woodward GCP-30 Series User Manual

Manual 37365A GCP-30 Series Packages - Genset Control
© Woodward Page 71/179
Dead Bus Start
Dead bus start of the GCB
The GCB will close without synchronization when the following conditions have been met:
Automatic mode
• The control has been placed in the AUTOMATIC operation mode
• An F2 or F3 class alarm has not been detected
• "GCB dead bus start" (Parameter 125) has been configured as "ON"
•
The busbar is de-energized (the control does not measure voltage on the bus)
• The engine is running and the generator voltage and frequency are within the permissible limits
• The discrete input "Reply: MCB is open" is energized (the MCB is open)
• If load sharing is performed via the CAN bus
- All GCBs must be open if the system has multiple generators in an isolated parallel application
- The generator with the lowest CAN bus address/generator number (Parameter 4) will be the first to close its
GCB
Manual mode
•
The control has been placed in the MANUAL operation mode
• An F2 or F3 class alarm has not been detected
• The busbar is de-energized (the control does not measure voltage on the bus)
• The engine is running and the generator voltage and frequency are within the permissible limits
• The discrete input "Reply: MCB is open" is energized (the MCB is open)
• If load sharing is performed via the CAN bus
- All GCBs must be open if the system has multiple generators in an isolated parallel application
- The generator with the lowest CAN bus address/generator number (Parameter 4) will be the first to close its
GCB
•
The "GCB ON" push-button has been pressed
Disabled generator monitoring:
If the generator monitoring for over-/undervoltage (Parameter 174) or over-/underfrequency (Parameter 168) is
d
isabled, the control uses internally defined default limits for generator monitoring.
Generator monitors Voltage Frequency
ON Monitor values Monitor values
OFF V
Gen
> 75 % V
Rated
V
Gen
< 115 % V
Rate
d
f
Gen
> 80 % f
Rated
f
Gen
< 110 % f
Rate
d
Table 3-5: Limit values generator, dead bus start
The permissible limits refer to the respective rated values in the system, such as the system rated voltage (Para-
meter 17) and the system rated frequency (Parameter 9).

Woodward GCP-30 Series Specifications

General

Brand	Woodward
Model	GCP-30 Series
Category	Controller
Language	English