Priority load management
One priority block per generator with eight loads per block, such as electrically operated load distribution circuit breakers or power transfer switches, can be block load controlled.
An under frequency monitor on the main bus monitors generator loading.

Lowest priority loads will be shed automatically so critical priority one loads stay energized if the generators become overloaded, if one of the running generators fails, or if one of the generators fails to start when a power outage occurs.

Visual indication indentifies the status of priority load blocks and a pushbutton allows for a manual override of shed load blocks.
A Generator Control Station includes a five-position selector switch for each engine generator. The settings are lockout/reset, off/cooldown, automatic test off line and test on line. Indicator lights signal when the generator is running and when controls are not in the automatic operation.
Load demand management
Available on Two Engine Systems
(Accessory LD)

In the optional load demand mode with both Gen 1 and Gen 2 online the system monitors total load demand. If the load falls below 80% of the priority one generator rating, the priority 2 engine (selectable) will shut down after an adjustable time delay. If the load increases above 90% of the priority one generator rating the priority 2 engine will be signaled to start and come online after an adjustable time delay.

If an under frequency bus condition is detected, the system will exit load demand and signal both engines to start and come online. If an engine fails while in load demand, the good generator will be signaled to start and come online and the priority 2 loads will be shed.
A System Control Station includes an alarm horn with alarm silence pushbutton. Pushbuttons are also included for resetting priority two loads and the underfrequency alarm. Visual indication provides status of priority two loads and emergency mode operation.
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Florham Park, NJ 07932