|
|
songbolove 发表于 2012-2-13 10:31 
6 x6 v# o3 H" B基本绝缘的供电电线是可以接触安装表面的。
: ~- S# j k0 Z* t5.2.2 Supply cords used as a means of connection to the supply, when supplied by the( {9 T) X% k+ _8 c* M$ P
luminaire manufacturer, shall be at least equal in their mechanical and electrical properties to
1 e& f B8 D3 l9 m2 lthose specified in IEC 60227 and IEC 60245, as indicated in Table 5.1, and shall be capable of
( Q/ @8 X) o* V; ^, a" zwithstanding, without deterioration, the highest temperature to which they may be exposed
/ m- m Z5 b/ S. [, gunder normal conditions of use.2 M8 \6 R( U- U; Y4 z( ]
Materials other than polyvinyl chloride and rubber are suitable if the above requirements are
( y+ |' @! L" }7 J/ L9 Qmet, but in such cases, the particular specifications of part 2 of the above publications do not
9 G, ]' m0 Q2 m" [8 Vapply.( v0 B1 g1 }% R6 |0 |1 t( l
Table 5.1 – Supply cords
7 _& ~' R' x; s) a; ^/ }6 `Luminaire Rubber PVC$ J' S- a7 _5 r, t' g! J
Ordinary class I luminaires 60245 IEC 89 60227 IEC 52 D% K, H# } D5 i, @& e$ a7 w
Ordinary class II luminaires 60245 IEC 53 60227 IEC 52
9 Q) F. R$ j1 F5 b+ }Luminaires which are other than ordinary 60245 IEC 57 –# B) j% N3 k* ]6 v# H3 k! _% f
Portable rough service luminaires 60245 IEC 66 –" V0 M/ u& P# c! q5 `
NOTE For supply voltages greater than 250 V, higher voltage grade cables and cords than those given in the" C# r6 e9 L6 B3 T
above table may be necessary.3 a: p7 V) v' k0 h' J& l
To provide adequate mechanical strength, the nominal cross-sectional area of the conductors! z- N( {( ^+ P, u; d
shall be not less than: w- k, P6 ~$ ?. v6 w4 Z4 ]
– 0,75 mm2 for ordinary luminaires;
+ `8 L; A4 B0 |- i5 h– 1,0 mm2 for other luminaires.
! `) {$ p4 ~6 @% T8 {( \If the luminaire is provided with a 10/16 A socket-outlet, the flexible conductor nominal crosssection- _ U7 g* N% e% t: A3 ^
area shall be at least 1,5 mm2. |
|