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楼主 |
发表于 2012-8-4 19:39
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非常感谢你的回答,但是对于第二点我觉得是必须要用绝缘套管的,60598-1的5.2.7提到 Cable entries through rigid materials for external flexible cables and cords shall have
+ q" W: x' O2 a8 |smoothly rounded edges of minimum radius 0,5 mm. 这里所说的rigid material是指硬质材料,同时要看5.2.8 If, in class II luminaires, in adjustable luminaires or in portable luminaires other than 1 M m( R5 D+ i* a) N
those for wall mounting, a flexible cable or cord where entering or leaving the luminaire passes
/ Q% N2 H8 f7 E4 s4 C, @1 n1 Ythrough accessible metal parts or through metal parts in contact with accessible metal parts,
' L7 j. k! D( ]' zthe opening shall be provided with a tough bushi ng of insulating material having smoothly : f6 u6 S' b' D0 L) a
rounded edges, so fixed that it cannot easily be removed. Bushings of material likely to 0 w, H( F ^5 R/ m& x. O
deteriorate with age shall not be used in openings with sharp edges. 从上面可以看出,只要电线进出口处是和金属材料接触的,必须使用带光滑边角的绝缘材料作为护线保护,对于有些工程师说打0.5MM圆角就能通过的说法是错误的,那是针对硬质非金属材料来说的。 |
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