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节选自 IEC 60529: 2001
. W3 G+ ~# e2 S( L2 ~对于IPX3:; ~% @9 `& j4 l* b3 D/ o5 P
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.; n: S/ R" k: x
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 3 s+ U6 j! |, w2 M0 h
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.
, g1 z9 G# c5 N& D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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