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节选自 IEC 60529: 2001% v7 z* ~4 y3 |( y9 T$ S' t& v
对于IPX3: u7 Y! v, H" x1 t
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.
- r* ^9 C* Y7 k {! E' I) w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
5 `, a; X# p, U0 b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.
/ i; z' F* W; I3 h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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