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Creation: 01.31 - 2014 2-4-15

GPU - 406

GPU - 409

Generator Protective Circuit (cont.)

PROBLEM

CAUSE

REMEDY

5. The output contactor opens

during power delivery, and the

GCM displays

“FAULT LATCHED,

OVERLOAD”.

A. There is too much load on the

GPU.

A. Reduce the load at the aircraft.

B. The GCM is faulty.

B. Replace the GCM.

C. A faulty connection exists

between the GCM and the voltage

sensing terminals on the output

contactor K16, or a faulty

connection exists between the

GCM and the current sensing

transformers.

C. Correct the wiring.

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