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Manual 26174
EGCP-2 Engine Generator Control Package
Woodward
133
Standard Sequence: Single No Parallel Unit in Auto with Loss Of Mains Detection Enabled.
TIME
Mains in Spec.
LOM Action Delay Starts
Mains Out of Spec*
*Over/Under Frequency
and/or Over/Under
Voltage
LOM Action Delay Expires
Open Mains Breaker
Start Genset
Gen Stable Delay
Gen Stable. Start Fast
Transfer Delay
Fast Transfer
Delay
Gen Breaker Closes
To Dead Bus
Genset On Load
M
a
ins in Spec.
Mains Stable
Delay
Open Gen Breaker
Fast Transfer
Delay
Close Mains Breaker
Mains In Spec and
On Load
VIS-110
00-04-27
Figure 5-5. Loss of Mains Detection Active
Standard Sequence: Single Mains Parallel Unit in Auto with Loss Of Mains Detection Enabled.
TIME
Mains in Spec.
LOM A
ction Delay S
tarts
Mains Out of S
pec*
*Over/Under Frequency
and/or Over/Under
Voltage
LOM A
ction Delay E
xpires
Open Mains B
reaker
S
tart Genset
Gen Stable Delay
Gen S
table. S
tart Fast
T
ransfer Delay
Fast Transfer
Delay
Gen B
reaker Closes
To Dead B
us
Genset On Load
Mains in Spec.
Mains Stable
Delay
S
ynchronize and Close
Mains B
reaker
Open Gen. B
reaker
Mains In Spec and
On Load
Generator
Unload Ramp
VIS-111
00-04-27
Figure 5-6. Generator Off Line