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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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. ~2 N) h& b6 x1 t0 X: R7 m: [5.2.10 Luminaires provided with or designed for use with a supply cord or other external
, X' o+ w; w7 V+ B9 _flexible cable or cord shall have a cord anchorage such that the conductors are relieved from( k/ w) B. O5 b! ~# R9 |, t
strain, including twisting, where they are connected to the terminals, and such that their
0 q0 ^* m: l# M" {: A# N$ j5 Qcovering is protected from abrasion. It shall be clear how the relief from strain and the. F1 C: \9 X8 F' ~( g
prevention of twisting is intended to be effected. For luminaires supplied without a cable or
4 F/ G& s( i1 [4 z% m, S8 mcord, suitable test cables or cords of the largest and smallest sizes recommended by the3 y+ R, [1 k7 t
luminaire manufacturer shall be used for the tests.
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5 g: P' U% A1 ?3 h- cIt shall not be possible to push the flexible cable or cord into the luminaire to such an extent* q3 i& t5 K; G4 P4 ?
that the cable or cord is subjected to undue mechanical or thermal stress. Methods such as
8 J2 d4 \1 c, U" I% R; W4 _0 x8 Etying the cable or cord into a knot or tying the ends with string shall not be used.5 B) z5 Y7 p2 w; ?9 j m& I
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Cord anchorage shall be of insulating material or be provided with a fixed insulating lining if an( _6 m% K; t& t7 `" m3 ~& ]% L2 T
insulation 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。- p) K8 B9 N- x0 T5 h9 O
- v) i& M/ p3 |/ ^/ Q; B/ y( T大家有什么看法,是否遇到这样的问题? |
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