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Power Factor 15kV Vac Breakers

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    Power Factor 15kV Vac Breakers

    In the NETA ATS and MTS power factor testing for a medium voltage vac breaker is an optional test. I don't believe it is a recognized test by manufacturers. Does anyone have any documentation to back this up? Is it a typical test done by others?

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    Quote Originally Posted by deloye4 View Post
    In the NETA ATS and MTS power factor testing for a medium voltage vac breaker is an optional test. I don't believe it is a recognized test by manufacturers. Does anyone have any documentation to back this up? Is it a typical test done by others?
    The Doble book mainly talks about the bushings for this test, I took a quick look through a few VCB manuals and none of them mentioned PF testing as part of maintenance. I don't know that this is a standard factory test either, other than maybe the bushings which I imagine are PF tested individually at production? As far as I know we've never done this for a customer at our shop as part of any standard service.

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    Quote Originally Posted by SecondGen View Post
    The Doble book mainly talks about the bushings for this test, I took a quick look through a few VCB manuals and none of them mentioned PF testing as part of maintenance. I don't know that this is a standard factory test either, other than maybe the bushings which I imagine are PF tested individually at production? As far as I know we've never done this for a customer at our shop as part of any standard service.
    These are for 15kV breakers. Manufacturers may not call it power factor tests, but that's the naming in the NETA book.

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