What Causes Generator Rotating Diodes to Fail?

Technician testing generator rotating diode with a multimeter

Generator rotating diodes usually fail because of excessive current, overheating, loose connections, electrical faults, or problems in the exciter or rotor circuit. If we find a failed diode, we do not simply replace it. We first test all the rotating diodes, inspect the rectifier connections, and check the exciter and rotor circuit for signs of […]