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这个问题我也很想知道，能指出在标准什么地方描述吗？作者: songnic 时间: 2007-9-2 22:05
电木算不算木材啊,另外,楼主的线是内部线吗?电源线会有单绝缘的?作者: wwnw_007 时间: 2007-9-3 09:18
电木实际是一种塑料的俗名,并不是木材.所以电要是绝缘材料.作者: RodgerLan 时间: 2007-9-3 09:37
1.2.23. X. _/ f) e B% n* I- g
class II luminaire* T5 ~: D8 t& I& h/ T
luminaire in which protection against electric shock does not rely on basic insulation only, but in9 W" S( F) N/ N1 q
which additional safety precautions such as double insulation or reinforced insulation are ; y0 x" [3 _6 {6 vprovided, there being no provision for protective earthing or reliance upon installation 9 E; B8 [5 Z! w" M7 b0 rconditions.+ S+ E/ k7 U' S
NOTE 1 Such a luminaire may be of one of the following types: ' e: w& ~, D4 T4 x' La) A luminaire having a durable and substantially continuous enclosure of insulating material which envelopes all % D) a1 _9 N. _( U* _! X1 `metal parts with the exception of small parts such as nameplates, screws and rivets which are isolated from live 7 ? W6 ?- S' ^: g+ f2 R B" Zparts by insulation at least equivalent to reinforced insulation. Such a luminaire is called an insulation encased 4 H5 _! w& l- ^4 H9 z5 Pclass II luminaire. , \" E9 m' ?- N$ ]# Hb) A luminaire having a substantially continuous enclosure of metal, in which double insulation is used throughout, 0 l7 y' R% ~$ w4 Mexcept for those parts where reinforced insulation is used because the application of double insulation is ) ^/ P" X/ E7 umanifestly impracticable. Such a luminaire is called a metal-encased class II luminaire. 8 u, J, P$ P5 s; i: Q+ F0 _& Bc) A luminaire which is a combination of types a) and b) above. , l2 Z+ s0 J. K$ zNOTE 2 The enclosure of an insulation-encased class II luminaire may form a part or the whole of the% c; h" m- V2 X8 [
supplementary insulation or the reinforced insulation. 7 ~' P7 m! b0 Y% ?: tNOTE 3 If earthing is provided to assist starting, but is not connected to an accessible metal part, the luminaire4 ?% H6 {6 M/ ^0 k
may still be deemed to be of class II. Accessible metal parts in compliance with the appropriate IEC lamp ; _3 e: v5 f1 J2 u Vspecification and other metal parts not normally earthed and not normally accessible during normal use are not ; U& \: b2 ~- W+ R+ {regarded to be conductive parts which may cause an electric shock unless the tests of Annex A show them to be7 ^& ^2 o4 W# t8 P
live parts. # S) S) h' }0 P% {NOTE 4 If a luminaire with double insulation and/or reinforced insulation throughout has an earthing terminal or an ' b' u% {7 w0 L5 Kearthing contact, it is class I construction. However, a fixed class II luminaire intended for looping-in may have an 1 O5 o) T4 v) R3 ^4 I# l0 E9 Rinternal terminal for maintaining the electrical continuity of an earthing conductor not terminating in the luminaire, 2 h2 o+ s& k7 k6 o( h( }1 iprovided that the terminal is insulated from accessible metal parts by class II insulation.0 }! m% o8 {; r5 ?- L
NOTE 5 Class II luminaires may have parts in which protection against electric shock relies on operation at safety , G- t8 c' \2 i7 x- d' q! Aextra-low voltage (SELV).作者: jacobchang 时间: 2007-9-3 10:50
照此看来，软电线，在要国标还是可以浸锡的了，但就是不能再用这种接线端子接了（是用螺丝来锁紧的）作者: af204 时间: 2007-9-3 12:34
6 |+ H) C$ a! k2 I! _' o! F这个问题原来我也问过，在灯具的标准里没有具体的哪一条可以说明：木材不能作为绝缘材料 ( W$ I: \* w- m* G6 C% W& w. v只有一条：载流部件不能直接接触木材！ # g4 N& @0 t( Y; D) m B 5 j( n. I6 `/ t5 F% E当然，从安全的角度考虑，木材是不能用作绝缘材料的，经过特殊处理的除外！作者: 红叶 时间: 2007-9-3 22:27
大家看看相关的CTL决议，可能对这个问题有帮助，转述如下： 8 q) {+ S) p4 E& u' h5 @8 G; a! ~Question: 1) In case a luminaire has decorative wooden parts in contact with current carrying8 J, c u3 Z: k4 q8 _6 c) x
parts, can it be accepted? 2 b# @. T8 s( O! I) J2) Can wood be used as insulating material? (For class III luminaires too)? ! n# v3 R$ t* v: l) m+ xDecision: 1) Not acceptable.$ j. _0 @9 C. @1 O. Y# z3 k2 l1 ~* w
2) Wood can be accepted as supplementary insulation, if all relevant3 `! e7 c* q5 u
requirements of the standard are comply with.7 |) F4 z# A" n+ P0 ~) z h7 i+ ~
这是IEC 60598-1(ed.5) 关于4.11.5的决议。具体内容我不翻译了，应该看起来没有问题。作者: yzyjy 时间: 2007-9-4 08:04
因为木材在湿度状态下会受潮而带电,故不能用.作者: canon 时间: 2007-9-4 08:41
标准规定绝缘材料部件应经受针焰试验或灼热丝试验,木材不能通过此两项试验之一,因此不能做为绝缘材料使用.作者: tianchi0305 时间: 2010-3-15 18:35
有谁知道电木的一些特性？