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二类灯具,压线架是金属,在一塑胶外壳内,实验室的工程师说不接受这种结构,要求用塑胶的压线架,但查标准如下:
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( h" U2 Q/ o1 Q/ [9 S5.2.10 Luminaires provided with or designed for use with a supply cord or other external6 J3 X# L+ L" L* F
flexible cable or cord shall have a cord anchorage such that the conductors are relieved from" p0 L+ Y7 C8 J% s+ q8 b6 ?: T
strain, including twisting, where they are connected to the terminals, and such that their
5 I! r. F4 A6 y) z2 |* ^# v9 w6 vcovering is protected from abrasion. It shall be clear how the relief from strain and the
) d, W- v* \) z1 A7 j- sprevention of twisting is intended to be effected. For luminaires supplied without a cable or/ _: Y, q6 k- W7 A& ~
cord, suitable test cables or cords of the largest and smallest sizes recommended by the
* ?6 ?# l: N# X, x2 P" `luminaire manufacturer shall be used for the tests.
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' K' b9 n# m% KIt shall not be possible to push the flexible cable or cord into the luminaire to such an extent
, N a3 y& P' b* m) i' Mthat the cable or cord is subjected to undue mechanical or thermal stress. Methods such as
; t7 H8 t, `- p8 r0 Gtying the cable or cord into a knot or tying the ends with string shall not be used.0 e+ p6 w) U( J- X% h
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Cord anchorage shall be of insulating material or be provided with a fixed insulating lining if an
: A+ {1 K- n9 [- t {) v2 G9 n7 linsulation fault on the cable or cord could make accessible metal parts live.
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红色部分应该说明了这一点,如果绝缘失效而不使可接触金属带电就可以了,因我们压线架的塑胶外壳内,不可能使金属部件带电,应该是符合要求的。
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! L9 }) N5 ?3 {' S大家有什么看法,是否遇到这样的问题? |
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