|
|
我认为各个标准会有不同的要求，所以想得出一个统一的答案是比较困难的。
6 @8 Y0 [0 t9 i5 C8 K5 c7 `仅以IEC 60598-1为例：4 e) x$ ~* h) Z- C
1. 套管安装：
+ L) U( Q+ g. `4.9.1 Insulating linings and sleeves shall be so designed that they are reliably retained in: m- L: L; A4 D8 \3 O% [" A- t5 u
position when switches, lampholders, terminals, wires or similar parts have been mounted. ~0 s( a6 i0 e6 e
7 `' c/ K- w9 ^6 D2. 用于温度保护功能：. o; B2 s, g' E+ ?
4.7.5 If the external wiring or supply cord is unsuitable for the temperatures reached inside
' u1 ]9 c! z$ v1 p3 {6 c z1 |the luminaire, either a connection shall be provided at the point of entry of the external wiring
4 G; ] x! C! `- Q6 Sinto the luminaire for the use of heat-resistant wiring after this point, or heat-resisting parts
2 n3 B. H' v; K* _* k9 O8 ]/ ?: [; ~shall be supplied with the luminaire to cover the part of the wiring placed inside it, which( ]- C+ D$ _: k4 D2 V4 z8 y
exceeds the wiring temperature limit.
; \4 m5 T. L& T* x5 c& }; b
' J/ O: g; h2 |5 v3. 类似的绝缘功能（具体是基本绝缘，附加绝缘或是加强绝缘看材料达到的测试等级）
4 D4 k/ L0 F. U7 {8 U) k4.9.2 Insulated linings, sleeves and similar parts shall have adequate mechanical, electrical9 j8 V2 I8 N0 {' y2 t6 H
and thermal strength.
+ Y C0 ]% T6 ICompliance is checked by inspection, by manual test and by the electric strength test in7 @( I `7 v2 _" K, f
accordance with Section 10. The thermal properties of wire and sleeve are checked in5 |+ i7 H4 s* w9 w; x- r6 ]
accordance with Section 12. Heat resistant sleeves used as covering for wires attaining a2 [) ]% f% [5 \ |
temperature exceeding the values given in Table 12.2 of Section 12 shall comply with the
6 x" j+ o5 I) S' E/ A" y0 E, ?requirements of IEC 60684, taking into account the temperature measured on the wire in
6 e' C" w) o3 ]8 Tquestion. The sleeve shall be resistant to a temperature exceeding the temperature measured
& u8 m5 \6 e4 u# Y( L& }+ Ron the wire by 20 °C or withstand the following test（潮态处理，温度处理，耐压测试，泄漏电流测量）
5 d. b4 d/ `) T; {2 b% y- f0 c' @3 m3 G4 q) O
4. 套管厚度，在IEC60598里面没有相应条款指出，是否可用电线绝缘层厚度做参考，我认为不合适。
* U# g3 J6 z) A附电线的绝缘层厚度：/ L; ]) ~4 l* J
5.3.1.1 For wiring which is directly connected to the fixed wiring, e.g. via a terminal block, and
+ u/ I8 Q" X1 E1 c, |the disconnection from the mains is relied upon by the external protection device(s), the
( ^5 @/ V: Q; B% R- dfollowing is applicable:
* n. a; q4 u% Q9 ~/ sFor normal operating currents higher than 2 A:7 h) C0 j3 `% Y2 f) Q
– nominal cross-sectional area: minimum 0,5 mm2,
; r$ d* N6 [7 d! @6 l2 O2 [– for through-wiring of fixed luminaires: minimum 1,5 mm2,
% ^+ Y* h, l: r8 h1 t- T0 f– nominal insulation thickness: minimum 0,6 mm (PVC or rubber).
0 m4 G/ p2 A$ G2 ~For mechanical protected wiring carrying normal operating currents lower than 2 A:& b5 [9 Y m. w3 P9 w9 k0 K
– nominal cross-sectional area: minimum 0,4 mm2,
" { w+ ~* w Z- w: u– nominal insulation thickness: minimum 0,5 mm (PVC or rubber). |
|
|关于安规|小黑屋|安规QQ群|Archiver|手机版|安规网
( 粤ICP13023453-10 )
窥视卡
雷达卡
发表于 2011-6-24 12:46
显身卡
楼主