Operating Generator Sets in Parallel

TM 9-6115-663-13&P

Close the control panel access cover (7) and secure with clamping catch (8).

Perform the PMCS listed as "DURING' in table 2-2.

To shut down generator set, place AC CIRCUIT INTERRUPTER switch in the OPEN position.

On the switch box, place the ON LINE switch (3 or 6) for the operating generator set in the OFF

position.

NOTE

Before shutting generator set off, allow it to operate five minutes with no

load applied.

On the generator control panel rotate the MASTER switch to the OFF position.

2-5.3.2 Operating Generator Sets in Parallel. The generator sets can be operated in parallel through

the switch box or at the generator set load terminals. When paralleling at the generator set load

terminals, refer to paralleling procedures in TM 9-6115-645-10. When paralleling at the switch box,

perform the following procedures:

WARNING

Prior to making any connections for parallel operation, ensure that there is

no input to the load and that the generator sets are shut down. Failure to

observe this warning can result in serious injury or death by electrocution.

WARNING

Never attempt to start the generator set if is not properly grounded

Failure to observe this warning can result in serious injury or death by

electrocution.

Ensure that load requirement is equal to or below the combined rated capacity of the two

generator sets.

Perform the Preventive Maintenance Checks and Services (PMCS) listed as "BEFORE" in

Install load and paralleling cables.

CAUTION

Do not close the AC CIRCUIT INTERRUPTER switch (13) on either of

the generator sets or close the load contactor at load until specifically

directed to do so. Closing any of these devices at any other time may

severely damage one or both of the generator sets.

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