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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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1 _9 F: x' P, D1 [9 G' v5 X4 F5.2.10 Luminaires provided with or designed for use with a supply cord or other external
: s0 S( o8 p* g; }( R; Mflexible cable or cord shall have a cord anchorage such that the conductors are relieved from
2 D% K' L8 S; R$ Z1 C2 Xstrain, including twisting, where they are connected to the terminals, and such that their) H8 f, n. [& _5 Z8 g9 q% z& L
covering is protected from abrasion. It shall be clear how the relief from strain and the4 u+ V1 k4 K- B& B( R
prevention of twisting is intended to be effected. For luminaires supplied without a cable or# x; n) ?. V( ^1 \0 ], e& ^
cord, suitable test cables or cords of the largest and smallest sizes recommended by the
4 {( j' ^0 M, R! vluminaire manufacturer shall be used for the tests.% c- O4 d7 z/ r0 C/ ?
, O% c2 d; [! _# H% YIt shall not be possible to push the flexible cable or cord into the luminaire to such an extent! n, R; r, z3 K
that the cable or cord is subjected to undue mechanical or thermal stress. Methods such as, c: {. K) X/ |/ j3 c5 ?
tying the cable or cord into a knot or tying the ends with string shall not be used.& ?8 q% B& `& w/ m" C% I2 c
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Cord anchorage shall be of insulating material or be provided with a fixed insulating lining if an2 s; W3 b0 {1 }/ [0 |
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。$ R# }) T1 @9 @9 U) X
/ `7 y# q, B# u) V大家有什么看法,是否遇到这样的问题? |
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