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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。; n/ N* R9 W- x4 X3 d8 L
仅以IEC 60598-1为例：
$ Y2 C: \7 N3 e4 }& `3 H" i( w( U1. 套管安装：
/ {' K" a. Q9 B8 A* ^# y4.9.1 Insulating linings and sleeves shall be so designed that they are reliably retained in
* @6 B% L$ ?: k. u8 S. E* N( uposition when switches, lampholders, terminals, wires or similar parts have been mounted.9 @- A! e- _% N8 R" X" F$ Z
" U; }$ d# @* X9 H2 L( F& K! V
2. 用于温度保护功能：
, Y7 G1 M' d8 g4 x4 d* V+ M4.7.5 If the external wiring or supply cord is unsuitable for the temperatures reached inside
2 s. F8 n* |$ B0 ?% g ?, J: Vthe luminaire, either a connection shall be provided at the point of entry of the external wiring
9 s4 P4 y U% hinto the luminaire for the use of heat-resistant wiring after this point, or heat-resisting parts# z c( D2 u! y+ d! X. _
shall be supplied with the luminaire to cover the part of the wiring placed inside it, which
2 d& }* e; O9 ]/ M4 U/ L8 Q0 Hexceeds the wiring temperature limit./ i% Q7 u( h. l. o: k
3 E) f. P8 M0 K" d& Q
3. 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）# b* L! x2 d5 j6 G- W
4.9.2 Insulated linings, sleeves and similar parts shall have adequate mechanical, electrical% h" |+ H. F0 s$ G/ I
and thermal strength. $ O1 D0 g! \! J
Compliance is checked by inspection, by manual test and by the electric strength test in
" m7 J" q8 n) `2 I% b7 X0 aaccordance with Section 10. The thermal properties of wire and sleeve are checked in
: b; U8 l, V( e7 P2 {: s* a5 d* haccordance with Section 12. Heat resistant sleeves used as covering for wires attaining a
4 @" @9 d+ f4 K6 p) u* B- Ttemperature exceeding the values given in Table 12.2 of Section 12 shall comply with the9 d# j+ z$ n& X
requirements of IEC 60684, taking into account the temperature measured on the wire in
3 c, o. b" ?+ l5 q" dquestion. The sleeve shall be resistant to a temperature exceeding the temperature measured
6 A& s2 P* Y' d2 ion 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）2 C6 @7 g' i4 c9 x0 x% L0 R; D
% U5 V" Y# }' {5 h& n% H. D
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。
# l+ H& C( u7 i4 X3 Q! _6 ~附电线的绝缘层厚度：+ r5 v3 D0 S9 T9 v' E8 [
5.3.1.1 For wiring which is directly connected to the fixed wiring, e.g. via a terminal block, and6 u9 I* V9 |! r( p' J d \0 w
the disconnection from the mains is relied upon by the external protection device(s), the
' w. O" {2 I" x2 e3 U0 M) cfollowing is applicable:) v6 M$ s( j) B" ?/ j
For normal operating currents higher than 2 A:
- L6 Q' x0 L$ r7 G2 [% c1 v8 {– nominal cross-sectional area: minimum 0,5 mm2,
& X4 n1 d6 y: x: Z– for through-wiring of fixed luminaires: minimum 1,5 mm2,! o) W0 c4 }- h: T* e. t
– nominal insulation thickness: minimum 0,6 mm (PVC or rubber).. e3 P5 A; D8 M/ O9 C
For mechanical protected wiring carrying normal operating currents lower than 2 A:* k1 m ?) d/ U+ Z6 f. v" w& L# r- |
– nominal cross-sectional area: minimum 0,4 mm2,, h* Z3 q. I( M. V$ Z! v7 w
– nominal insulation thickness: minimum 0,5 mm (PVC or rubber). |
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发表于 2011-6-24 12:46
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