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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 ; N- V2 k" n1 m5 {8 \& g
madeinnp 发表于 2014-3-13 18:20 9 w {. K" ~6 A6 K2 v- A
应该是不用。( @6 x. s# ~- G+ I0 v
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 ... 7 W4 q( W4 J) X a; X# }/ q
! a; T. Y Q6 u$ Z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.2 u7 T! U( k" q& x7 [3 y
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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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