Rotor: Testing and Inspection

Rotor:

1. Check rotor coil for continuity. Check to ensure that there is no continuity between slip rings. If resistance is too small, it means that there is a short circuit. If there is no continuity or if there is a short circuit, replace rotor assembly.
Resistance value: Approx. 3-5 Ohm
2. Check rotor coil for grounding. Check to ensure that there is no continuity between slip ring and core If there is continuity, replace rotor assembly.