|
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:; V* F7 K4 b+ w/ }! W/ k% I
8 t0 [6 G9 f. Q5 U5.2.10 Luminaires provided with or designed for use with a supply cord or other external* }% J3 c$ I# N! ?2 q
flexible cable or cord shall have a cord anchorage such that the conductors are relieved from
' J1 F9 Y0 H* v( c0 h4 m( pstrain, including twisting, where they are connected to the terminals, and such that their5 `8 ?3 F+ h4 j$ R! N2 y
covering is protected from abrasion. It shall be clear how the relief from strain and the; c9 [4 \" c, Y5 G" ]# ?+ W
prevention of twisting is intended to be effected. For luminaires supplied without a cable or! l( o# f7 V# Y, {5 @: N
cord, suitable test cables or cords of the largest and smallest sizes recommended by the
7 N# i0 T+ k" v0 L$ Dluminaire manufacturer shall be used for the tests.! m* |9 a) ~! v2 D! ]. _- V
- p2 T# F0 h( s/ vIt shall not be possible to push the flexible cable or cord into the luminaire to such an extent' j% }8 }+ Q* z
that the cable or cord is subjected to undue mechanical or thermal stress. Methods such as: u$ l7 s3 m4 V
tying the cable or cord into a knot or tying the ends with string shall not be used.% {$ d. ?" P) X! I V
* a& Y, W* ~6 }% D# ~
Cord anchorage shall be of insulating material or be provided with a fixed insulating lining if an
1 Z2 C1 s I* V, P+ L$ [insulation fault on the cable or cord could make accessible metal parts live.
* B' C8 ?/ d% m( d _' ^4 b7 I( D1 p; ?$ C! V6 `; E! W
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。4 }& W$ K! R$ I8 c
. J- u' P# N2 |3 F8 ?- ?0 G大家有什么看法,是否遇到这样的问题? |
|