|
|
不知道是不是这份264文件/ H4 G/ g; f4 r' g1 D6 K5 x
- L& }: D% a4 d8 h. R: O. o N1 w
Standard: IEC 60598-1/1999 - X% Y9 _, A; y
Sub clause: 4.15
& W( i: }: @3 z# [8 ~( V
" v9 Z! ^7 [- e4 j% g, }% @Sheet N°: 264/03 / E" ~* i+ E0 y- F7 x6 T# F
Page: 1(1) ; S0 k6 M% [% w, m% g9 x; W1 ~
4 i; Q9 I& F J0 r0 X) i5 U5 Q
Subject: Flammable materials
) N0 w& i. G1 w# g
! ]# U, ^0 X0 u/ }/ { s. \2 ?' m: UKey words: + F. y0 _) P: {9 l2 l: N
- Ignition
2 x/ K! a. r5 {* @+ b6 ytemperature
( F& _3 F! p& @( @- Life time
* y8 x1 h, K# L* I- Glow wire test
) C2 p4 f" `& \% {% d' [6 b
2 m. n$ M! C6 D* |* d/ {9 bMeeting:
0 C8 w8 [9 J5 X$ o# u$ |; G& r UOSM/LUM No. 19 5 A! s$ Q% @+ {0 G, h7 }5 [
3 [# ^& f E5 g+ D, o( @* {
Item: 13.1.9
3 a& ?# @7 }' D4 i' |Question:
+ P$ s: z. q9 j# l Covers / shades and similar parts, which do not withstand the 650°C glow wire test,
# z3 f# y: d/ Tshall be adequately spaced from any heated part that could raise the material to its
5 G% f4 B: _: N+ s- [, iignition temperature. Generally the temperature of the lamp or the ballast /
4 H) L% Z8 @0 H) x3 e) Wtransformer will not rise the material to its ignition temperature, because the maximum ; ?2 c4 p6 J: f4 R s- ` z
temperature of the outside of a (compact) fluorescent lamp or small incandescent
A/ I# E; S* ?3 e4 Wlamp is simply too less. Besides there is a difference between the flash-ignition . \( y+ D7 W3 K R6 S! ]- C
temperature of materials. Practical example is a lighting chain with plastic decorative
7 S8 C( n5 [3 m/ {& H$ W# O" fcover, spaced about 15 mm from the lamp. The maximum temperature on the outside & G+ c: z6 @# T+ U" X
of the lamp (measured during the bridging test) was 180°C and the ignition
5 j% U- d/ N" W' G: ?8 R6 Etemperature of the relevant material is much more than 180°C. & b/ ]( T5 J5 P+ |' r( h
5 T5 O4 E+ Y% T0 B; V3 iDecision: 4 m* O4 g0 s' R
As the ignition temperature is not known over the life time, the ignition temperature of
3 {! P! F b/ A* |+ @ zthe relevant material shall not be considered. |
|
/1 
|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 2010-11-18 13:41
显身卡
楼主
