Electricity: measuring and testing – Fault detecting in electric circuits and of electric components – Of individual circuit component or element
Patent
1993-07-20
1995-03-07
Wieder, Kenneth A.
Electricity: measuring and testing
Fault detecting in electric circuits and of electric components
Of individual circuit component or element
G01R 104
Patent
active
053961722
ABSTRACT:
A transformer fault analyzer provides on site fault analysis of electrical distribution transformers, relying on patterns of parameter variation in transformer winding ratios, winding resistance and magnetizing impedance, and comparison of these parameters to predetermined values. In a preferred embodiment the analysis considers transformer ratio balance and magnetizing impedance balance. The transformer analyzer may be used with the transformer under load or no load conditions, and thus can be used to test transformers in the field as well as surplus or refurbished transformers.
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Gough Thomas A.
Lat Michael V.
Bowser Barry C.
Ontario Hydro
Wieder Kenneth A.
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