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songbolove 发表于 2012-2-13 10:31 : n& O0 B0 W. o. O7 t4 P
基本绝缘的供电电线是可以接触安装表面的。
0 e6 g% G6 l: K7 x: V+ e" s e/ ]5.2.2 Supply cords used as a means of connection to the supply, when supplied by the5 Z9 p2 P. _1 P, \$ F. y; m
luminaire manufacturer, shall be at least equal in their mechanical and electrical properties to
$ r1 a: ^6 @* [% w+ qthose specified in IEC 60227 and IEC 60245, as indicated in Table 5.1, and shall be capable of
, Y: t3 A6 ~2 ^3 l6 q. @withstanding, without deterioration, the highest temperature to which they may be exposed& ? b( w7 y W' G
under normal conditions of use.- V! j; P- K* n9 R* c% J
Materials other than polyvinyl chloride and rubber are suitable if the above requirements are- n6 p' r! X& [+ x* w
met, but in such cases, the particular specifications of part 2 of the above publications do not+ x; P$ j- T: f* `/ i+ E
apply.9 T, p' h! ^7 y7 D2 A/ v
Table 5.1 – Supply cords
3 _# J1 _3 \3 Y; ?; v/ gLuminaire Rubber PVC
9 V) D! V F% O. y" q9 Y1 SOrdinary class I luminaires 60245 IEC 89 60227 IEC 52+ _: ]- C/ D9 y+ A4 p+ @
Ordinary class II luminaires 60245 IEC 53 60227 IEC 52, a% _4 `5 f$ o5 {- H+ [2 n5 Z! s
Luminaires which are other than ordinary 60245 IEC 57 –
: m, K+ S7 n# G1 _' h- M. ZPortable rough service luminaires 60245 IEC 66 –7 V W. m1 u7 Y
NOTE For supply voltages greater than 250 V, higher voltage grade cables and cords than those given in the- m: g; K0 Y& `5 b! j: E T$ P2 b
above table may be necessary.( e7 H& G& b' d8 c0 X8 O3 G$ _
To provide adequate mechanical strength, the nominal cross-sectional area of the conductors
/ u9 e( K+ ~; B+ d' A. y& Gshall be not less than:
: f* f |2 P# u0 _/ f5 r, B– 0,75 mm2 for ordinary luminaires;$ z1 m) h" G9 V: y% t5 Y
– 1,0 mm2 for other luminaires.
1 E" P5 a: w% x2 UIf the luminaire is provided with a 10/16 A socket-outlet, the flexible conductor nominal crosssection6 Z+ q0 k. {* U" e
area shall be at least 1,5 mm2. |
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