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节选自 IEC 60529: 2001
/ Q2 j; \- x$ t! F4 V' j9 ^* L对于IPX3:
u% g, J1 c: \& x7 \$ ~7 o 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. x; [1 G3 m: m3 d. W* D% e
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 % T6 \. z- V1 u* V, k9 E) 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.. N$ M2 U# E! K# P/ C4 `+ }1 Q# E0 I
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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