Woodward EGCP-2 - Figure 7-10. Generator Breaker Close Sequence

Manual 26076 EGCP-2 Engine Generator Control Package
Woodward 103
Gen Breaker Close Sequence
Multiple No Mains Parallel Unit
Close Gen Breaker
FLAG = TRUE
Switch PT input to
Bus Sensing
Initialize Timers,
Counters
Close Attempts <
Close Attempts Setpoint?
Set Sync
Reclose Alarm
Sync Timeout
Time Expired?
Set Sync
Reclose Alarm
Force Sync
Mode = OFF
Force Sync
Mode = OFF
NO
NO
YES
YES
Mains Breaker OPEN
and Live (>40VAC)
Bus?
Sync Mode =Permissive?
Sync Mode = Run?
NO
Adjust Speed
Bias
Voltage Matching
Enabled?
Adjust Volt
Bias
NO
Phase <= Phase
Window?
Voltage Error
<= Voltage Window?
Sync Mode = Check?
YES
YES
YES
NO
NO
NO
NO
YES
YES
YES
NO
YES
Dead Bus?
(Bus PT Input < 40VAC)
Dead Bus Closing
ENABLED?
Breaker Logic?
Energize Breaker
Open Command
Energize Breaker
Close Command
Gen CB Aux
Input?
Gen Breaker Hold
Timer Expired?
Increment Close
Attempts
Reset Close
Timer
De-Energize
Breaker Open
Command
De-Energize
Breaker Close
Command
Gen Breaker Hold
Timer Expired?
Sync Successful
Set Mode Flag
= IN SYNC
Energize Breaker
Close Command
Breaker Logic?
Start Reclose
Delay Timer
NO
NO
NO
NO
NO
NO
NO
YES
YES
YES
YES
YES
YES
YES
Dead Bus Token
Granted?
YES
NO
Check Mode?
YES
NO
VIS-102
00-04-26
Figure 7-10. Generator Breaker Close Sequence
(Multiple No Mains Parallel)