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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
8 V _$ M9 Z9 S' Gsmoothly 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 6 O! f0 ]& B- I* T J' t8 S2 g. I
those for wall mounting, a flexible cable or cord where entering or leaving the luminaire passes ' _' H! `2 N8 ?( T
through accessible metal parts or through metal parts in contact with accessible metal parts,
5 L9 N. J# Y3 v: |8 Athe opening shall be provided with a tough bushi ng of insulating material having smoothly & {5 M3 w0 G! D# k
rounded edges, so fixed that it cannot easily be removed. Bushings of material likely to
p# T% o4 r/ X3 J6 F5 tdeteriorate 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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