Rotor: Testing and Inspection

Inspection Rotor - Step (1):

1. Check field coil for continuity. Check to ensure that there is continuity between slip rings.
If resistance is extremely small, it means that there is a short. If there is no continuity or if there is short circuit, replace rotor assembly.
Resistance value: Approx. 3 - 5 ohms

Inspection Rotor - Step (2):

2. Check field coil for grounding. Check to ensure that there is no continuity between slip ring and core. If there is continuity, replace rotor assembly.