Rotor: Testing and Inspection

Rotor
Open circuit




Using ohmmeter, check for continuity between slip rings of rotor. If there is no continuity, replace rotor.




Ground
Using ohmmeter, check that there is no continuity between slip ring and rotor. If there is continuity, replace rotor.

Slip rings




- Check slip rings for roughness or scoring. If rough or scored, replace rotor.
- Using a vernier caliper, measure the slip ring diameter. If the diameter is less than minimum, replace the rotor.