ASTM D3300在脉冲条件下石油成因的绝缘油的电介质击穿电压的标准试验方法
日期:2012-02-10 11:51
breakdown strength of an oil in uniform fields, polarity does have a marked effect on the breakdown voltage of an oil in nonuniform electric fields.
Transient voltages may also vary over a wide range in both the time to reach crest value and the time to decay to half crest or to zero magnitude. The IEEE standard lightning impulse test (see 2.2) specifies a 1.2 by 50-s negative polarity wave.
1. Scope
1.1 This test method covers the determination of the dielectric breakdown voltage of insulatin
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