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节选自 IEC 60529: 2001
3 t. {+ _" s' B+ N对于IPX3:
& ^, G% s: f9 y/ ~3 F 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." a$ H# W4 B6 ?/ r
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
* M4 Q; N3 S1 ~. F& l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.% M, a7 T, R( E3 B3 H/ y
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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