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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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5.2.10 Luminaires provided with or designed for use with a supply cord or other external
]- @6 b1 }7 V6 T Z6 F/ Qflexible cable or cord shall have a cord anchorage such that the conductors are relieved from8 f4 |" ]& g4 i& T1 J2 ~2 t+ e Y
strain, including twisting, where they are connected to the terminals, and such that their9 M8 d* b R7 N% f2 e' z
covering is protected from abrasion. It shall be clear how the relief from strain and the2 [' U/ m. c! p! a- k J U
prevention of twisting is intended to be effected. For luminaires supplied without a cable or
% g( J6 U$ i5 jcord, suitable test cables or cords of the largest and smallest sizes recommended by the
0 H7 D) h3 V' y! Z V( Fluminaire manufacturer shall be used for the tests.* A- D/ e0 } k/ ^% R
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It shall not be possible to push the flexible cable or cord into the luminaire to such an extent
1 j4 ^+ N) E! q) a' V$ q" [that the cable or cord is subjected to undue mechanical or thermal stress. Methods such as
! }3 ^* i2 n+ utying the cable or cord into a knot or tying the ends with string shall not be used.: m6 [; z) b7 {. R- J$ E& {
+ C7 o8 J' p% O+ x9 @/ R6 F5 dCord anchorage shall be of insulating material or be provided with a fixed insulating lining if an' z7 s! J0 @' H$ L% i5 R
insulation fault on the cable or cord could make accessible metal parts live.5 V3 G+ H2 b3 `" f
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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。8 d! U3 N; z- @; {7 t
: Y' R" X- I1 n o2 D ] W" w8 B大家有什么看法,是否遇到这样的问题? |
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