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  1. looper89

    Generator, wye-wye and a delta-delta

    The installation was investigated and it was found that the neutral wasn't tied to ground like I was told. Once it was attached everything began to operate as expected. Thanks for your time.
  2. looper89

    schorch electric motor rewind

    It is unclear to me what exactly you are trying to do. If you are trying to run equipment that was designed to operate a 50Hz speeds than you need realize the things will rotate faster and gearing etc. may need to be changed. If you are replacing an existing 60Hz motor and 1.2x the RPM on the...
  3. looper89

    Generator, wye-wye and a delta-delta

    The wye-wye transformer is new and the delta-delta has been in service for some time. The 500kVA transformer is 480V-12470V. I noticed that I mislabeled it. Thanks for the comments.
  4. looper89

    Generator, wye-wye and a delta-delta

    I have been asked to trouble shoot a 750 kW genset. The genset is feeding two transformers, one is a 500kVA 480V-2470V grounded wye-wye and the other is a 150kVA 480V-4160V delta-delta transformer. Everything works fine when just the delta-delta transformer is connected but once the wye-wye is...

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