ASTM D2275固体电绝缘材料表面对局部放电(电晕)的耐电压性标准试验方法
日期:2012-02-08 11:38
cal apparatus in those regions where the voltage gradient in the gas exceeds the corona inception level. On other types of equipment, where detectable corona is absent initially, it may appear later due to transient over-voltages or changes in insulation properties attending aging. Certain inorganic materials can tolerate corona for a long time. Many organic materials are damaged quickly by corona, and for these, operation with no detectable corona is imperative. This test method intensifies som
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