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Ageing and degradation of silicone rubber insulators in contaminated environments is a major concern due to their organic nature. Understanding the flashover process of silicone rubber insulators under contamination is very important and needs standardized tests and procedures. Surface resistance measurement can be used as an indication of ageing and contamination severity of outdoor silicone rubber...
Chemical changes along the surface of silicone rubber material due to partial arcs and dry band arcing were studied in this paper. Rectangular samples of silicone rubber were used for experiments and pollution was applied using the modified solid layer method based on IEC 60507. All tests were carried out in a climate chamber having temperature, humidity and fog rate control. Clean bands of 1 cm were...
This paper investigates the flashover and ageing behavior of silicone rubber insulators under various contamination and dry band conditions. Effect of pollution severity, leakage distance and dry band location on the flashover characteristics of silicone rubber insulator was investigated. Flashover voltage and electric field distribution were measured under different pollution severity levels and...
This paper investigates the formation of dry bands along a rectangular silicone rubber surface and their effect on the flashover characteristics. Plate samples of silicone rubber were used for experiments and pollution was applied using the modified solid layer method based on IEC 60507. Dry bands of various widths were inserted at the ground end, high voltage end and middle part of the samples. Experiments...
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