|

楼主 |
发表于 2014-3-13 22:10
|
显示全部楼层
本帖最后由 jjlamshushushu 于 2014-3-13 22:11 编辑 ) J) u+ E. ^, f
madeinnp 发表于 2014-3-13 18:20 
3 v( R( ?# U7 ?# K5 }- z0 T i应该是不用。
$ W; l a& u+ C! g# |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 ... # i5 S1 J4 y( f& {- r( R9 Q
; Z/ @5 ?) [. Y! {) m0 A% ^, W6 @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.
) O$ `# Q3 L* W1 L) D& @
+ K8 H: Y) O7 M. \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? |
|