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节选自 IEC 60529: 2001
& G1 Z G7 \9 t对于IPX3:
8 {! w3 h6 r" j: S4 }, k 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.
2 Q) l' N0 f, ?& M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
, v- @1 H8 ~' u. u( S) S; g/ Z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.
6 {0 t, _/ H2 z; k$ g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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