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Behavior of insoluble materials in artificial contamination tests

1996; Institute of Electrical and Electronics Engineers; Volume: 3; Issue: 3 Linguagem: Inglês

10.1109/94.506217

1558-4135

Masaru Ishii, Minoru Komatsubara, Ryosuke Matsuoka, Taku Matsumoto, Masaaki Kurokawa, K. Naito,

Thermal Analysis in Power Transmission

It was reported that the dc flashover voltage under an artificial contamination test sometimes was affected considerably by the type of insoluble materials in the contaminant. To clarify the cause of this phenomenon, the physical characteristics of some contamination slurries and the conductivity of the artificially contaminated insulator surfaces are investigated experimentally. The test results lead to the conclusion that the variation in the flashover voltage is caused mainly by the characteristics of conductive films formed on the insulator surface in the clean fog test.