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本帖最后由 jjlamshushushu 于 2014-3-13 22:11 编辑
; R6 W, {% ?& K" ~; f/ Y! @madeinnp 发表于 2014-3-13 18:20 1 k" {; ~) l+ K! M5 @
应该是不用。
6 \; T; C) C# V p$ npart1 clause25.1 中提到这个测试是"between the terminal so one winding"这个应该是只要测 ... ; C C3 S# x2 A( [* b0 G# B
7 K+ n% ]8 ^/ J D% l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.3 ?8 {3 g9 F- D% u& z
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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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