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节选自 IEC 60529: 2001
& ^ d, Z' C- C" X6 m0 u5 w对于IPX3:2 h% p, }+ `. s2 u; j
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.
# E& W/ `" l/ [3 C5 z) j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 ' o, w1 Q* \: ?- o9 y2 D
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.8 B( J* w4 G: Y. l: z
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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