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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：) i. [- X: ~ c( t
$ N( Y& ~" n+ d/ X0 t m+ U5.2.10 Luminaires provided with or designed for use with a supply cord or other external
! b) \' O5 `/ B! P2 ]flexible cable or cord shall have a cord anchorage such that the conductors are relieved from; C3 V- q0 h* m/ c& \
strain, including twisting, where they are connected to the terminals, and such that their
6 j' z- Z# h: C# Y: ]/ W# H2 lcovering is protected from abrasion. It shall be clear how the relief from strain and the$ q, C3 k3 K9 J+ {. k5 k
prevention of twisting is intended to be effected. For luminaires supplied without a cable or
) u1 Z/ ^) f# M/ Y9 k1 `cord, suitable test cables or cords of the largest and smallest sizes recommended by the; _- ]) B3 G2 K: [
luminaire 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
; ?& ^- [/ b- b0 `5 \that the cable or cord is subjected to undue mechanical or thermal stress. Methods such as' p4 H' A) S" w9 K! r" \, _+ s
tying the cable or cord into a knot or tying the ends with string shall not be used.
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Cord anchorage shall be of insulating material or be provided with a fixed insulating lining if an( l) o4 n( k* X5 F4 O7 h
insulation fault on the cable or cord could make accessible metal parts live.1 x4 K/ w+ }% Z' _
! B" Q. s- V/ L9 j% H4 m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。, h; \2 p' B& k. V4 }$ b: x
3 M1 ~6 d6 m+ B& U) v
大家有什么看法，是否遇到这样的问题？ |
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发表于 2008-8-19 20:27
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