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节选自 IEC 60529: 2001* D9 s# H! w: m" j
对于IPX3:. ?% \; K9 L) }. d0 E
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.
# f9 p* Y+ [0 Q9 j2 Q2 k' \+ N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( Y- J( t! S4 _ `, q0 a; _- q! G
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.
4 r" c ^9 y+ S/ `8 K* X( y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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