Woodward EGCP-2 - Figure 7-13. Mains Breaker Reclose Sequence

EGCP-2 Engine Generator Control Package Manual 26076
106 Woodward
Close Mains
Breaker Flag
Initialize Timers,
Counters
Close Attempts >
Close Attempts Setpoin
?
Generator CB
Aux?
Monitor Bus
PT
Dead
Bus?
Mains
Stable?
Sync
Check?
Breaker
Logic
De-Energize Mains
Breaker Open
Command
De-Energize
Mains Breaker
Close
Energize Mains
Breaker Close
Command
Mains CB
Aux?
Decrement Hold
Timer
Hold Timer
Expired?
Sync
Successful
Start Reclose
Delay
Decrement
Delay
Reclose Delay
Timer Expired?
Increment Close
Attempts
Decrement Hold
Timer
Hold Timer
Expired?
Monitor
Mains
PT
De-Energize
Breaker Close
Energize Mains
Breaker
Command
Breaker
Logic?
Synchro OFF,
Reclose Alarm
Parallel Mains Breaker Re-close Diagram
(occurs if mains opens due to external function)
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
Unit in Test?
Unit in Run?
Unit in Auto?
NO
YES
YES
YES
NO
NO
YES
Note: To Clear Mains Reclose Failure,
Cycle Run W/ Load Input
from OFF to ON to OFF.
Check Mains
Setpoint =Enabled?
YES
NO
Phase <=
Phase Window
Adjust System
Bias
Voltage <
Voltage
Adjust System
Volt Bias
Voltage
= ENABLED?
In Phase Window for
=> Dwell Time?
Sync Mode =
CHECK?
Sync Mode =
PERMISSIVE
?
Sync Mode =
PERMISSIVE?
NO
NO
NO
NO
NO
NO
NO
YES
YES
YES
YES
YES
YES
YES
Master Unit?
YES
Follow Master
Speed
and Voltage
Bias
Breaker
Close
Mains
Window?
Speed
Matching
Command
VIS-105
00-04-26
Figure 7-13. Mains Breaker Reclose Sequence
(Mains Parallel)