Power Limit Mk II PCB (HGC Part P383T)
The Hill Graham Controls Power Limit Mk II PCB (original part number P383T) was an improvement on the equivalent Ross Hill Controls Power Limit PCB at the time. This model features a dual KW limit which initially limits at a lower level, then allows time for the engine superchargers to spin up after which the limit ramps up to 100% full power. This prevents generators which suddenly receive a step increase in load when running at low-load from stalling.
There is also a Hi-Lo switch which drops the limit by 10% to compensate for older engines
This model is compatible with most Hill Graham and Ross Hill Controls SCR systems but requires specific system calibration