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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。! j' T/ J) @( I+ w" e* B
仅以IEC 60598-1为例:' N T0 Q$ ~% h& l
1. 套管安装:. p m" {2 i+ |: t1 ?4 Q' y, Z! R
4.9.1 Insulating linings and sleeves shall be so designed that they are reliably retained in( d, N, `2 R Z: N8 u- Y
position when switches, lampholders, terminals, wires or similar parts have been mounted.
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4 n. F% i* y7 U1 I# U$ ~( @; c2. 用于温度保护功能:
" f: U3 T; D% a6 B7 R# z* C4.7.5 If the external wiring or supply cord is unsuitable for the temperatures reached inside
$ T( x& V# R9 P% t2 C2 qthe luminaire, either a connection shall be provided at the point of entry of the external wiring! Q2 j; c& w; d1 N
into the luminaire for the use of heat-resistant wiring after this point, or heat-resisting parts
5 f! \, X! M/ V2 Cshall be supplied with the luminaire to cover the part of the wiring placed inside it, which
: O6 P2 {. \7 L% M8 nexceeds the wiring temperature limit.
9 j& h& ~9 }, \7 r9 U, V9 E, {, A' F# O" m# n g9 H1 f
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)
3 ]; }; a/ R5 |2 P& Y m4 M4.9.2 Insulated linings, sleeves and similar parts shall have adequate mechanical, electrical
) L! l2 f. j& ]and thermal strength.
S* @8 l& h3 V$ G$ @* e$ HCompliance is checked by inspection, by manual test and by the electric strength test in
" L4 j$ H! q: g4 O1 raccordance with Section 10. The thermal properties of wire and sleeve are checked in2 a6 a" A4 w' c# ]
accordance with Section 12. Heat resistant sleeves used as covering for wires attaining a" F0 A. M6 l! w2 i! b
temperature exceeding the values given in Table 12.2 of Section 12 shall comply with the
3 R0 E7 I4 A: I& }6 w; }requirements of IEC 60684, taking into account the temperature measured on the wire in
) B' B1 Z/ q- `4 ]% s$ N6 @9 }, rquestion. The sleeve shall be resistant to a temperature exceeding the temperature measured
2 W- @2 K% H8 V, aon 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 R4 `, f6 y$ X7 y3 }/ r0 i% w
! }( B4 ?' ^4 \5 a' f, D& l4. 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。% z) F1 g6 R6 p1 S
附电线的绝缘层厚度:' d' b6 }8 a. D+ A4 F, W7 w
5.3.1.1 For wiring which is directly connected to the fixed wiring, e.g. via a terminal block, and
; ]$ `5 w) o$ h& j6 ethe disconnection from the mains is relied upon by the external protection device(s), the/ x/ \: ]: }! X
following is applicable:- t* x& N0 |8 d# I' v/ r
For normal operating currents higher than 2 A:
2 o+ K. g8 g5 k7 A- ^8 ]– nominal cross-sectional area: minimum 0,5 mm2,- c) D* u+ N# s# _/ _ i; f' A
– for through-wiring of fixed luminaires: minimum 1,5 mm2,8 ]& W4 \7 `( e/ u
– nominal insulation thickness: minimum 0,6 mm (PVC or rubber)., ^8 @! g( Z5 W, K5 @
For mechanical protected wiring carrying normal operating currents lower than 2 A:
8 d- G/ U0 P. t) {3 [' U; j8 k– nominal cross-sectional area: minimum 0,4 mm2, L: M2 R1 L' q
– nominal insulation thickness: minimum 0,5 mm (PVC or rubber). |
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