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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:9 e" E/ |6 `9 [
2 c0 q9 g i2 `. I& f8 e; Y5.2.10 Luminaires provided with or designed for use with a supply cord or other external
; W0 F& P% l% g- ^( w$ g8 qflexible cable or cord shall have a cord anchorage such that the conductors are relieved from/ ?" h9 X! B0 ~0 D" N0 B
strain, including twisting, where they are connected to the terminals, and such that their
! _6 ^ w, `. q8 fcovering is protected from abrasion. It shall be clear how the relief from strain and the# z; z- R# t$ N" g8 c: ?3 R
prevention of twisting is intended to be effected. For luminaires supplied without a cable or2 X2 m+ D% K! z7 \& e% p: q- k5 e
cord, suitable test cables or cords of the largest and smallest sizes recommended by the Z6 Z1 q; d6 p; U; g. J
luminaire manufacturer shall be used for the tests.+ A1 W \* k) f7 P2 E: D) B
$ a6 U2 S) O& C6 N7 E/ PIt shall not be possible to push the flexible cable or cord into the luminaire to such an extent
% u: ]' {: ~: z- g3 e) Nthat the cable or cord is subjected to undue mechanical or thermal stress. Methods such as
8 v" L8 d1 d7 Vtying the cable or cord into a knot or tying the ends with string shall not be used.
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. u. m) t$ h/ L8 i8 f+ mCord anchorage shall be of insulating material or be provided with a fixed insulating lining if an
& q7 M [( n' z( H- A5 g* Y6 y6 I+ qinsulation fault on the cable or cord could make accessible metal parts live./ j# u" v3 K" S+ h o
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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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; ?1 ~" f' C' j& V大家有什么看法,是否遇到这样的问题? |
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