HGM9510 GENSET PARALLEL UNIT
HGM9510 Genset Parallel Unit ISSUE 2013-08-06 Version 1.1 Page 18 of 65
Closing Operation：During genset normal running, press if generator voltage and frequency
have reached on-load requirements
1) In case of single unit running, generator closing relay outputs;
2) In case of running in parallel:
a) If bus has no voltage, then the controller will send a closing signal to other waiting parallel
gensets and generator close relay will activate, this prevents other sets in the system from
attempting to close their own breakers at the same time.
b) If bus has voltage or other gensets are already closed, the controller will adjust speed and
voltage through GOV and AVR to synchronize the gensets to the bus; when synchronism
requirements has been achieved, breaker close signal will be initiated and the genset will be
paralleled to the bus. Once they are paralleled, the controller will control the generator to
gradually accelerate and share load with other paralleled gensets.
Opening operation：Press ,
1) In case of single unit running, the controller sends open breaker signal.
2) During parallel operation, if button is pressed, first of all, the controller will transfer load
to other generators, and only then send an opening signal.
5.6.2 AUTOMATIC CONTROL PROCEDURE
When controller is in auto mode, the switch control procedure is automatic control procedure.
Note： The auxiliary close input should be configured necessarily and make sure the
connection is correct.
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