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songbolove 发表于 2012-2-13 10:31 $ m( w5 G/ w* d0 U, `2 k
基本绝缘的供电电线是可以接触安装表面的。
. ^( ~. D( J0 \( n5.2.2 Supply cords used as a means of connection to the supply, when supplied by the' f# X( x% @% o
luminaire manufacturer, shall be at least equal in their mechanical and electrical properties to5 P; p! K% h1 @8 i& Z+ R+ ]4 y, [! J' E
those specified in IEC 60227 and IEC 60245, as indicated in Table 5.1, and shall be capable of. b* h2 F, j1 h$ E
withstanding, without deterioration, the highest temperature to which they may be exposed. I- j1 [4 f9 ^9 z6 p/ X: w6 S$ X1 P
under normal conditions of use.9 j r5 \2 o( B C! Q
Materials other than polyvinyl chloride and rubber are suitable if the above requirements are
. K t* X+ b4 e! z% g3 Qmet, but in such cases, the particular specifications of part 2 of the above publications do not. _1 z$ ?1 b7 x
apply.
+ K; x- b0 s6 _5 ?6 lTable 5.1 – Supply cords
* ~4 B9 u% d8 o$ b% Y" {1 `4 FLuminaire Rubber PVC: U6 g. I7 Z! z8 l q1 \
Ordinary class I luminaires 60245 IEC 89 60227 IEC 52
& _% s1 q; h+ x1 JOrdinary class II luminaires 60245 IEC 53 60227 IEC 52
$ [- j1 ]8 y) e4 b! qLuminaires which are other than ordinary 60245 IEC 57 –
% @+ t, E/ _( v; `5 m# UPortable rough service luminaires 60245 IEC 66 –
8 a! ^) {% P5 mNOTE For supply voltages greater than 250 V, higher voltage grade cables and cords than those given in the
1 C& M2 S; p+ \# pabove table may be necessary.
4 A# F ~4 |7 r) M+ `: u1 UTo provide adequate mechanical strength, the nominal cross-sectional area of the conductors
1 k8 D& i( \2 cshall be not less than:
+ q$ I! A# K. T! o( N+ y– 0,75 mm2 for ordinary luminaires;4 d5 o3 a4 [+ h j# o& Z6 n! c: a
– 1,0 mm2 for other luminaires.
6 O7 X7 R- z4 A* \If the luminaire is provided with a 10/16 A socket-outlet, the flexible conductor nominal crosssection
- c! ?* g0 b& F! n% x3 zarea shall be at least 1,5 mm2. |
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