Windtura 750. Only voltage across 2 phases.

Discussion in 'Windtura Generators' started by TKa, Apr 7, 2012.

  1. TKa


    Just installed my Windtura 750. Wind is only about 8mph but enough to see AC voltage across 2 of the phases. But one phase is dead.

    Voltage across phases:
    1 and 3 = 12VAC
    1 and 2 = 0VAC
    2 and 3 = 0VAC

    So phase 2 is dead? Issue with slip ring or PMA?
  2. Minnesota

    Minnesota WindyNation Engineer

    Hard to say. With the unit stopped you can use an ohmmeter between any 2 wires and it should read just a few ohms. I'd suspect a connection problem rather than a device problem.
  3. TKa


    My cheapo harbor frieght voltmeter isn't measureing resistance for some reason. I will have to troubleshoot this next time I'm at the site in a month.
  4. windyguru

    windyguru WindyNation Expert

    My guess is that there is a loose wire/bad connection somewhere in your wiring. When I don't read an output on something, that is usually the problem.
    If you think there is a problem with the turbine, e-mail us at and we will take care of it.

    PS -- In my opinion, those Harbor Freight voltmeters are worthless for accurate measurements. They are only useful for ballpark measurements. I have compared some of them to my Fluke meters and their DC voltage readings have been off by as much as 10%!
  5. TKa


    Was at the cabin site this weekend. Ohmed every thing out with a better meter, still a dead phase. Checked all connections, and removed the turbine. The slip ring has a dead leg. I should have ohmed it out before installing it to avoid puting it up in the first place.

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