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节选自 IEC 60529: 20016 ?* ~! M% Y2 j
对于IPX3:
s/ t3 `. N( O* p( w2 Z) o The tube is caused to oscillate throuth an angle of 120 o, 60 o on eitherside of the vertical, the time for one complete oscilaltion (2 x 120 o) being about 4 s and the test duration being 5 min.0 {& w9 R5 t) p7 Y \+ |
离竖直中心位置各60度,两边加起来120度,但要返回原位是2 x120度=240度,所用时间是4s 7 |) Q& z# v( k* H/ T& ?1 {" g
对于IPX4:The tube is caused to oscillate through an angle of almost 360 o, 180 o on eihter side of the vertical, the time for one complete oscillation (2 x 360 o) being about 12 s.
% I0 H U8 f H# T( x/ `/ U离竖直中心位置各180度,两边加起来360度,但要返回原位是2 x360度=720度,所用时间是12s . |
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