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本帖最后由 jjlamshushushu 于 2014-3-13 22:11 编辑 4 V5 i+ t" ^/ P) l: R a" c
madeinnp 发表于 2014-3-13 18:20
$ _1 `' s. S. l2 @& B: [6 g, b应该是不用。% X3 q, m% K) Z7 ~1 _- t
part1 clause25.1 中提到这个测试是"between the terminal so one winding"这个应该是只要测 ... 8 a1 I- |. a% a, R( y# z9 h
/ t/ }0 j. z' C9 c2 K3 c4 T这个测试项目的频率为400HZ,这是5085-2里的,而5085-3里的这项测试的要求是 the dielectric voltage withstand test after rated output heating test, twice the rated voltage was applied to the transformer's winding with the remaining [winding] open circuited. The frequency of the applied voltage potential was not less than twice the rated frequency and was maintained for a period of 7200 c.( s/ M+ ?% s% P0 t( X' T' p" {
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问题来了----为什么二者同一个测试项目区别这么大呢?7200C的含义是什么? |
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