ASTM D1389薄固体电绝缘材料的保护电压试验用标准试验方法_防火测试中心_防火资源网

ASTM D1389薄固体电绝缘材料的保护电压试验用标准试验方法
日期:2012-02-08 16:31
ASTM D1389 Standard Test Method for Proof-Voltage Testing of Thin Solid Electrical Insulating Materials
ASTM D1389薄固体电绝缘材料的保护电压试验用标准试验方法
Occasional dielectric defects may be found in commercially available and acceptable thin electric insulating materials. More often than not, these materials are used in multiple layers. The probability that occasional dielectric weak spots will coincide from layer to layer is very small but increases with the frequency of occurrence of the

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