Filter
Top Products
PART 1
GENERAL INFORMATION
SECTION 1.8
AUTOMATIC OPERATING PARAMETERS
Page 30
LOAD TRANSFER
The transfer of load when the generator is running is
dependent upon the operating mode as follows:
1. Manual
• Willnottransfertogeneratorifutilityispresent.
• Willtransfertogeneratorifutilityfails(below65%of
nominal for 10 consecutive seconds.
• Willtransferbackwhenutilityreturnsfor15consec-
utive seconds. The engine will continue to run until
removed from the Manual mode.
2. Auto
• Will start and run if Utility fails for 10 consecutive
seconds.
• Willstartafive(5)secondenginewarm-uptimer.
• Willnottransferifutilitysubsequentlyreturns.
• Willtransfertogeneratorifutilityisstillnotpresent.
• Willtransferbacktoutilityonceutilityreturns(above
75% of nominal) for 15 seconds.
• Will transfer back to utility if the generator is shut
down for any reason (such as the switch is in the
OFF position or a shutdown alarm.
• After transfer, will shut down engine after one (1)
minute cool-down time.
3. Exercise
• Will not exercise ifgenerator is already running in
either Auto or Manual mode.
• During exercise, the controller will only transfer if
utility fails during exercise for 10 seconds, and will
switch to Auto mode.
UTILITY RESTORED
Initial Condition: Generator supplying power to cus-
tomer load. When the utility returns (above 75% of
nominal), a 15 second return to utility timer will start.
At the completion of this timer, if the utility supply is
still present and acceptable, the control will transfer
the load back to the utility and run the engine through
a one (1) minute cool down period and then shut
down. If utility fails for three (3) seconds during this
cool down period, the control will transfer load back to
the generator and continue to run while monitoring for
utility to return.