Monitoring partial discharges on 4 kV motor windings

作者: S. Tetrault , G.C. Stone , H.G. Sedding

DOI: 10.1109/PCICON.1997.648179

关键词:

摘要: Partial discharges are a symptom of most the stator winding insulation deterioration mechanisms found in motors and generators rated 6 kV or more. Thus, partial discharge testing has been used for over 40 years as means determining maintenance requirements such high voltage stators. As benefits have become more widely known, there an interest to apply 4 motor generator windings. This paper discusses theoretical reasons which may limit The results extensive series offline tests presented indicate that indeed do occur. online conducted on about ten past two show only occur short time prior failure with some types mechanisms. Thus prevent in-service failures, continuous monitoring is necessary. An inexpensive monitor described. It seems will be cost-effective very critical process where failures large financial consequences.

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