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节选自 IEC 60529: 2001- Y A) N; I) {& g9 G. l
对于IPX3:) z9 Y* x) v) Y
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.
+ o3 r/ Q! [6 G/ R4 g7 g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 8 N9 g- _* j* G' R3 A1 O
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.! J \0 n6 ]% ^
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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