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Transformer testing
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oldfieldguy
Electrical
The power factor test is more comprehensive if I had to limit myself to just one, but why would we do that?
Power factor test set = $$$
Insulation resistance test set = $
Hiring a competent testing contractor to show up and do the tests usually means you get BOTH tests anyway. They are part of a pretty standard battery of tests on oil-filled transformers above a certain size.
old field guy
Power factor test set = $$$
Insulation resistance test set = $
Hiring a competent testing contractor to show up and do the tests usually means you get BOTH tests anyway. They are part of a pretty standard battery of tests on oil-filled transformers above a certain size.
old field guy
It also called dissipation factor and test the real component of the leakage current through the insulation. Ideally, when insulation is in a good shape, the leakage current is purely capacitive. However, e.g. when water presents the leakage current will have resistive component.
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