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Component Testing: 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. Standard resistance value is 3-5ohm. If there is no continuity or if there is a short circuit, replace rotor assembly. See Fig 1 .
  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. See Fig 2 .
Fig 1: Checking Continuity Between Slip Rings & Field Coil
G00352952Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
Fig 2: Checking Continuity Between Slip Ring & Core
G00352953Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
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