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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。9 Q. c/ W" E$ K y2 i7 H5 P
仅以IEC 60598-1为例：* r6 c G; K# [0 e% W
1. 套管安装：
# A. ?8 j4 L! l; `4.9.1 Insulating linings and sleeves shall be so designed that they are reliably retained in3 I# ~. b3 M2 P _$ J8 T, V
position when switches, lampholders, terminals, wires or similar parts have been mounted.
& Q/ t l. u$ \" T b) P& r
: e+ b; t6 C. W" N0 B# R2. 用于温度保护功能：" X- B, \$ @' s7 i* T" J4 \
4.7.5 If the external wiring or supply cord is unsuitable for the temperatures reached inside1 A+ F5 m k) @3 U4 B
the luminaire, either a connection shall be provided at the point of entry of the external wiring; ^- G' o' O1 e
into the luminaire for the use of heat-resistant wiring after this point, or heat-resisting parts/ R D% ~# ^* t( \
shall be supplied with the luminaire to cover the part of the wiring placed inside it, which
: ~+ b! @4 t! R8 |: b+ U( K# wexceeds the wiring temperature limit.* U% y) ^% J6 L. E! D
$ O2 j! L& c2 C" e
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）
l8 ]( S. C" y; n% B2 n5 J4.9.2 Insulated linings, sleeves and similar parts shall have adequate mechanical, electrical
; F% f: P, @& Z* \, X1 Tand thermal strength. . l3 b* c. {1 T3 P, r
Compliance is checked by inspection, by manual test and by the electric strength test in
4 b0 }# | M) i0 s8 @: @) Iaccordance with Section 10. The thermal properties of wire and sleeve are checked in
1 o7 h9 Q- f7 u+ eaccordance with Section 12. Heat resistant sleeves used as covering for wires attaining a
4 v1 x: ^8 T! c- a7 Dtemperature exceeding the values given in Table 12.2 of Section 12 shall comply with the1 m4 h0 K6 p+ K, N. y
requirements of IEC 60684, taking into account the temperature measured on the wire in
3 S3 V7 O5 d8 K3 }" b- wquestion. The sleeve shall be resistant to a temperature exceeding the temperature measured: J+ V- l% D+ s) K% {
on 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）
6 @% x: A5 _) m, y
) s$ _8 C- ?' _2 l( n4. 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。( [6 ], ^( ~# X& k
附电线的绝缘层厚度：
/ P7 D6 c) g7 _: v% G5.3.1.1 For wiring which is directly connected to the fixed wiring, e.g. via a terminal block, and& s; m: {0 n9 u. P- {& s* @! y
the disconnection from the mains is relied upon by the external protection device(s), the# Z0 c$ N9 U8 o* R% B/ ]6 W ]
following is applicable:
3 [; U/ M9 h* B2 ]) a. ^For normal operating currents higher than 2 A:* r. f# x h' {* ]3 S
– nominal cross-sectional area: minimum 0,5 mm2,
% o/ A3 E6 f$ K9 U4 I. q– for through-wiring of fixed luminaires: minimum 1,5 mm2,
% B3 h8 P( I( D0 J( k, j* c ]– nominal insulation thickness: minimum 0,6 mm (PVC or rubber).
J, ]* l! t- G, m. E6 e0 ?1 E! E0 EFor mechanical protected wiring carrying normal operating currents lower than 2 A:) ~! s* W7 ]+ o+ X( c
– nominal cross-sectional area: minimum 0,4 mm2,5 Z c4 W2 ]: d+ m/ d$ K$ b
– 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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