Method of determining stability of insulating oil

Details Method of determining stability of insulating oil Method of determining stability of insulating oil

G - Physics

01

N

G01N 21/68 (2006.01)

Patent

CA 2054616

ABSTRACT OF THE DISCLOSURE The usual method of determining whether failure of a transformer is imminent is to analyze dissolved gases in the insulating oil used in the transformer. The results of such analysis do not always reliably correlate with the actual failure rate under service conditions. A relatively simple, accurate method of determining the stability of an insulating oil and thus predicting transformer failure includes the steps of subjecting the oil to ionization, and determining the concentration of free radicals in the oil before and after ionization, the difference in concentration providing a quantitative indication of the gassing tendency or stability of the oil.

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