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节选自 IEC 60529: 2001) u* x1 Z0 P( h+ G$ T9 I0 ^
对于IPX3:
6 g/ S8 L" L0 Q2 f0 _! h' M 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.
+ W$ V; }- H% B/ @# J$ k) }- C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 , D, y7 u* A/ i
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.
) f a& P0 b6 h& D5 u. M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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