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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:! v7 f0 E6 _1 d! S+ ]
8 M' {* b2 J8 H+ N/ R4 \5.2.10 Luminaires provided with or designed for use with a supply cord or other external
1 H) C! P& \& n. m) \6 G2 `flexible cable or cord shall have a cord anchorage such that the conductors are relieved from* L1 c4 p( `6 i/ `$ b
strain, including twisting, where they are connected to the terminals, and such that their
+ N8 r0 g r5 G m2 ocovering is protected from abrasion. It shall be clear how the relief from strain and the* n% `8 M. j5 Z
prevention of twisting is intended to be effected. For luminaires supplied without a cable or& I2 ]- W0 D9 {5 F* X
cord, suitable test cables or cords of the largest and smallest sizes recommended by the, X! H1 ?% v1 @& k# P y
luminaire manufacturer shall be used for the tests.# i& }; g; ~0 \7 f0 I
: P; V2 T0 D! w0 G, h$ TIt shall not be possible to push the flexible cable or cord into the luminaire to such an extent
6 z8 M4 X/ [: ^" n3 |! R& qthat the cable or cord is subjected to undue mechanical or thermal stress. Methods such as4 u! t* P+ @( i& H/ E% s7 K' g
tying the cable or cord into a knot or tying the ends with string shall not be used." F! F, [) c: D; x
! z" A: w4 m U7 e7 a9 eCord anchorage shall be of insulating material or be provided with a fixed insulating lining if an
: \ P ?- Q- e5 h3 Minsulation fault on the cable or cord could make accessible metal parts live.. j' U- @0 @1 y O, v. B
6 |/ }3 g- P" ~% w0 l) e& ?) v; y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。
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; n' K# e3 O' ^- j% S* j) I大家有什么看法,是否遇到这样的问题? |
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