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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 ?! D; q- N z) {) S+ |5 q( F6 ]; f+ O
9 H! N! O7 o0 m R# O5.2.10 Luminaires provided with or designed for use with a supply cord or other external
( y* F5 ?9 w n2 @/ s t" tflexible cable or cord shall have a cord anchorage such that the conductors are relieved from; l. ?9 m/ j! `: P& C* q" {* n
strain, including twisting, where they are connected to the terminals, and such that their
: N$ ]( C4 R5 x) ~covering is protected from abrasion. It shall be clear how the relief from strain and the* f p% d- O* b, Y) ]0 B
prevention of twisting is intended to be effected. For luminaires supplied without a cable or
0 M6 M8 F$ L+ o9 A3 L1 E5 Mcord, suitable test cables or cords of the largest and smallest sizes recommended by the
/ \5 ?; l* ^8 g" y- J( }+ a' Z/ gluminaire manufacturer shall be used for the tests.
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It shall not be possible to push the flexible cable or cord into the luminaire to such an extent
8 G5 s/ t$ A& H. c @* z% D1 lthat the cable or cord is subjected to undue mechanical or thermal stress. Methods such as4 F6 G6 C8 b3 B( y3 ^# [# }
tying the cable or cord into a knot or tying the ends with string shall not be used.
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) A5 ?; {0 e( y4 P8 @Cord anchorage shall be of insulating material or be provided with a fixed insulating lining if an
5 U+ [8 w( ]8 {; _- G2 n5 f4 Linsulation fault on the cable or cord could make accessible metal parts live.
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% s8 c6 q$ T; H: E' o8 k$ d( r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。+ r E" f7 U4 \+ D+ K, F6 z
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大家有什么看法,是否遇到这样的问题? |
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