Proper way to check ac leg voltage?

Discussion in 'General Questions' started by bluejay, Nov 22, 2011.

  1. bluejay

    bluejay WindyNation Engineer

    If I am checking each leg of Ac at the rectifier where is the proper ground for a accurate reading?
     
  2. TomT

    TomT WindyNation Engineer

    You really can not do it one leg at a time. As the common connection is in the turbine and it is insulated from the case. The only way is to measure between the legs.
    AC lead test.JPG
     
    bluejay likes this.
  3. bluejay

    bluejay WindyNation Engineer

    Thanks tom and the reading would be the combined volts of the 2 legs?So if you had problems in a wire you could find it in this way?
     
  4. TomT

    TomT WindyNation Engineer

    Yes it will be the combined voltage of both legs. They should all be reading about the same voltage.
    Yes if all the voltages are close to the same then the wires coming down from the turbine are OK.
    If you have a short the tests will not all be the same. If one line is broken or not connected you should be able to figure out which one.
    Star Test.JPG
     
    Minnesota and bluejay like this.

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