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Power Factor Testing

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    Power Factor Testing

    Does the pressure in a oil filled transformer matter when power factoring the transformer?

    For some reason, I recall a topic at a NETA conference or Doble conference that mentioned something along the lines of "you should power factor under positive pressure and not a vacuum"...

    This statement could be totally false and I cannot find any literature to back the statement up. Has anyone else heard anything along these lines?

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    How to Perform Tan Delta Test with Doble 4100 or Omicron Cpc 100 + TD1

    Any one knows how to perform Tan Delta Test on Dry Type Power Transformer of 2000 Kva and how to connect instrument with Transformer bushings please help me out .

    Regards

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    Quote Originally Posted by ElectricalTestTech View Post
    Does the pressure in a oil filled transformer matter when power factoring the transformer?

    For some reason, I recall a topic at a NETA conference or Doble conference that mentioned something along the lines of "you should power factor under positive pressure and not a vacuum"...

    This statement could be totally false and I cannot find any literature to back the statement up. Has anyone else heard anything along these lines?
    cannot do hv power factor test(doble) under vacuum as you run a risk of flashover, pressure should not make a difference other than the moisture content of the dry air or nitrogen or sf6 in a breaker

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    Power Factor Pressure

    Quote Originally Posted by ElectricalTestTech View Post
    Does the pressure in a oil filled transformer matter when power factoring the transformer?

    For some reason, I recall a topic at a NETA conference or Doble conference that mentioned something along the lines of "you should power factor under positive pressure and not a vacuum"...

    This statement could be totally false and I cannot find any literature to back the statement up. Has anyone else heard anything along these lines?
    I'm not aware of anything regarding the pressure of the transformer that would affect power factor results. Power factor is measuring the capacitance of the insulation and has little to do with the internal conditions beyond the bushings.

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