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发表于 2014-3-13 22:10
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本帖最后由 jjlamshushushu 于 2014-3-13 22:11 编辑 ) D$ y* R( u" o+ q: x
madeinnp 发表于 2014-3-13 18:20
( s" c/ f3 r4 F3 K {" d$ ^1 w3 \应该是不用。
3 g9 \: O' J: _! Z5 [' n) N$ Apart1 clause25.1 中提到这个测试是"between the terminal so one winding"这个应该是只要测 ... 6 U) N5 B& N+ b7 ~
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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.# l- Q7 i3 P2 V# _* O b/ Y) [
+ u# E. H% h" ~- {1 v+ O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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