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songbolove 发表于 2012-2-13 10:31 * t3 x0 u/ U+ h+ |3 e/ S2 `
基本绝缘的供电电线是可以接触安装表面的。
/ m. v3 U: A+ o" {5.2.2 Supply cords used as a means of connection to the supply, when supplied by the, m& b; C9 b9 Y$ l
luminaire manufacturer, shall be at least equal in their mechanical and electrical properties to' }& f8 h! S0 ^' @, d
those specified in IEC 60227 and IEC 60245, as indicated in Table 5.1, and shall be capable of4 c; `, s' ~6 d9 E
withstanding, without deterioration, the highest temperature to which they may be exposed- S- M3 R* @+ _) a! s
under normal conditions of use.+ I! m# ~) h7 S
Materials other than polyvinyl chloride and rubber are suitable if the above requirements are( D8 I' m1 _' U0 g S; h5 T" I" P
met, but in such cases, the particular specifications of part 2 of the above publications do not+ i# X' q. l% h
apply.+ u4 {3 p8 g1 ]
Table 5.1 – Supply cords
1 z9 a! s ]4 i* aLuminaire Rubber PVC% E$ ]" d) z: c: P2 Z
Ordinary class I luminaires 60245 IEC 89 60227 IEC 52
; O' \ e: ]6 Q3 _2 rOrdinary class II luminaires 60245 IEC 53 60227 IEC 52
% t! }& t; @) HLuminaires which are other than ordinary 60245 IEC 57 –
C' r3 y/ U$ E$ }* t$ ~5 }) IPortable rough service luminaires 60245 IEC 66 –5 J1 k5 }) A, j* k5 v r$ q
NOTE For supply voltages greater than 250 V, higher voltage grade cables and cords than those given in the O( b. t$ E* p, I
above table may be necessary.
$ u5 l# {- V+ J% B$ P8 ?" i8 RTo provide adequate mechanical strength, the nominal cross-sectional area of the conductors
: A+ g5 p* P% j" wshall be not less than:7 A* N4 e2 B6 c/ p7 p. S
– 0,75 mm2 for ordinary luminaires;5 o5 O9 u: `- G2 p/ r0 n8 T. j6 W
– 1,0 mm2 for other luminaires.
* M9 Y! h _1 x9 V8 ^' S) xIf the luminaire is provided with a 10/16 A socket-outlet, the flexible conductor nominal crosssection
4 {3 G) f" g. |6 S. h marea shall be at least 1,5 mm2. |
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