|
|
songbolove 发表于 2012-2-13 10:31 " ^- _- F. H, y# A
基本绝缘的供电电线是可以接触安装表面的。
0 n- F. T7 E8 w3 T/ N3 ^5.2.2 Supply cords used as a means of connection to the supply, when supplied by the
9 ~9 w- Y% G3 P2 Uluminaire manufacturer, shall be at least equal in their mechanical and electrical properties to% }' [0 T# i4 }/ \/ e
those specified in IEC 60227 and IEC 60245, as indicated in Table 5.1, and shall be capable of; t1 L; |/ ^: c( \, t
withstanding, without deterioration, the highest temperature to which they may be exposed
+ h; o6 B& ]- w& V% N! \under normal conditions of use.
6 J: Q/ a9 v7 h: B# r$ G" uMaterials other than polyvinyl chloride and rubber are suitable if the above requirements are
: f: d$ X6 p6 ~. f% U" D. |/ o2 Bmet, but in such cases, the particular specifications of part 2 of the above publications do not
$ ^; E; W4 D. _# x# ]$ Eapply.
* c% i( E; @4 j8 S' QTable 5.1 – Supply cords
" H2 e9 y9 W* I) j fLuminaire Rubber PVC
5 y8 d8 n- @! FOrdinary class I luminaires 60245 IEC 89 60227 IEC 52
# i& Y/ H5 |- o5 @; r/ @) kOrdinary class II luminaires 60245 IEC 53 60227 IEC 524 Q) n' m) W9 q. x& ` t
Luminaires which are other than ordinary 60245 IEC 57 –
4 | m2 z, D* {Portable rough service luminaires 60245 IEC 66 –
5 Y; c z* H. V: LNOTE For supply voltages greater than 250 V, higher voltage grade cables and cords than those given in the* u) w0 m4 o+ h8 K) I% i4 z! d
above table may be necessary.
" l ~/ O3 C& c6 C3 S/ {To provide adequate mechanical strength, the nominal cross-sectional area of the conductors( M6 f! c" @1 ?& `$ P
shall be not less than:, u; X2 Q6 L! g1 B8 x" B* r' m
– 0,75 mm2 for ordinary luminaires;
5 j. S T7 C8 r+ x% s– 1,0 mm2 for other luminaires.) u/ b ?, @6 l! Q
If the luminaire is provided with a 10/16 A socket-outlet, the flexible conductor nominal crosssection
- H& d; g. i5 O) ~: Oarea shall be at least 1,5 mm2. |
|