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  1. Andrew247

    1000KVA Rotor Winding IR Test

    OK, Thanks everyone. I'm wrapping this up now. I've made my decision. The alternator is coming out for replacement. I have used two additional Meggers to test the rotor and the conclusion is that the rotor is shorting down to earth as voltage is introduced. I used another old style crank...
  2. Andrew247

    1000KVA Rotor Winding IR Test

    Yes sure! I'm only testing between the rotor windings and earth. The two rotor windings have been completely disconnected and in air. I'm testing between the disconnected windings and earth (the alternator shaft)
  3. Andrew247

    1000KVA Rotor Winding IR Test

    Good day, I have a question about an IR Test (insulation resistance) on the rotor of a 1000KVA Leroy Somer LSA 50.1 alternator. I use the Megger MIT1525 for the IR test and I'm doing a rotor to earth insulation test. As I know from the past when performing resistance tests on other...

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