|
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:
% [7 {- Q. X/ s6 a" E! o( W
" U& x V) M2 Q- ]7 @5.2.10 Luminaires provided with or designed for use with a supply cord or other external2 p! X- ^7 \3 g) B# Q
flexible cable or cord shall have a cord anchorage such that the conductors are relieved from
/ o7 X& ]: u, Y- xstrain, including twisting, where they are connected to the terminals, and such that their- Y5 Y. ^1 [" U# s0 A$ V) W% ^
covering is protected from abrasion. It shall be clear how the relief from strain and the! Y* q# o& r& U
prevention of twisting is intended to be effected. For luminaires supplied without a cable or
3 Y, z. }' J& v: u1 S* _cord, suitable test cables or cords of the largest and smallest sizes recommended by the
8 R0 J4 G0 j* c) }8 jluminaire manufacturer shall be used for the tests.
v, a/ Q- a5 k8 C* K( h' v+ O8 X1 k9 T8 J
It shall not be possible to push the flexible cable or cord into the luminaire to such an extent; y* T, Z' D) T. O0 }
that the cable or cord is subjected to undue mechanical or thermal stress. Methods such as: e+ W8 n$ G! @# r& i, }8 d
tying the cable or cord into a knot or tying the ends with string shall not be used.
) @0 @5 q* ~! v( L; p# |/ u3 N1 f( L0 `
Cord anchorage shall be of insulating material or be provided with a fixed insulating lining if an
) l8 R0 p* u2 ^: i- F( f! Minsulation fault on the cable or cord could make accessible metal parts live.
& J% x8 p8 m x5 q
& b) s. E- v5 c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。0 h& u" a* h, l2 R! _
' n+ m* P. q7 u$ r5 T, u; w) B8 y大家有什么看法,是否遇到这样的问题? |
|