UL/CUL漏电流测试疑点

纸水仙

近期做一个UL/CUL 65案子的时候,一类设备,测试U2有390mV,开始认为FAIL了,但是UL工程师看了下标准后说CLASS I对此有放松,可以放过,但我看了下UL 60065标准的确有提到只要测MIU值就行了,但是CUL用的是IEC的标准,里面没提到不用测U2也没有看到对CLASS I有放松条款啊?迷惑中,请各位帮忙解释一下,谢谢.

xmozlx

看CAN/CSA22.2 No。60065的9.1.1.1下面的叙述:
For CLASS I constructions the r.m.s. TOUCH-CURRENT to earth shall not be more than 3,5 mA.
The measurement shall be carried out with the measurement network described in annex D of
this standard and with the protective earthing connection disconnected.