|
|
不知道是不是这份264文件; @5 s: w! T7 J5 @: b
7 \& V% T$ `$ d. l9 |- EStandard: IEC 60598-1/1999
5 r) B" s# L% rSub clause: 4.15
& H2 [# D& C3 ~1 j+ L: }# g 2 k, b5 W/ y* S. ^! g8 |1 \
Sheet N°: 264/03
, z( X( ?( \' b2 B$ mPage: 1(1) 2 D8 E' u4 f8 R4 e
' Q* P7 o8 W" i4 x( D5 z. a1 [Subject: Flammable materials
3 c3 O F5 i' |# ]2 e6 ?0 U+ ]
# i: Z% S8 ?( |0 D8 G4 W; xKey words:
2 j/ ~% }$ @2 {3 @! D- _ C' }: D- Ignition
& w, \6 a+ @2 i1 e% ytemperature
3 O; N0 q( b w+ v# U, \" T- Life time
2 d7 o' x$ ?/ B1 ?7 G9 K I- Glow wire test " U% \. z4 F$ d7 i/ ]; g
. o# @3 t5 `' r5 x& H
Meeting:
3 T2 C: @4 ?6 iOSM/LUM No. 19 % s7 ^( e( D: ^; v' Q2 G. Q A5 o
5 Z1 w4 y% d1 R( aItem: 13.1.9
( m6 z: ?5 ?: L2 `4 zQuestion: " j+ @0 ?. ] Q5 z$ e+ V U
Covers / shades and similar parts, which do not withstand the 650°C glow wire test,
, ]7 z6 A/ @7 _shall be adequately spaced from any heated part that could raise the material to its
' q" y/ @9 X- u1 z7 dignition temperature. Generally the temperature of the lamp or the ballast / & |- _3 s- c t2 u. ~' {' B
transformer will not rise the material to its ignition temperature, because the maximum
3 G8 @3 @. A. O5 s5 o) V; dtemperature of the outside of a (compact) fluorescent lamp or small incandescent ( [4 I* M+ s7 V% @! b
lamp is simply too less. Besides there is a difference between the flash-ignition
, W/ Y- s' @( j0 j; ]( W1 A, Xtemperature of materials. Practical example is a lighting chain with plastic decorative
0 s% e( [4 x! g( C: ?; ccover, spaced about 15 mm from the lamp. The maximum temperature on the outside
( t& G' ^7 }9 l/ m: T6 {8 rof the lamp (measured during the bridging test) was 180°C and the ignition
& H# X: P8 A) f3 O+ G! I: t" dtemperature of the relevant material is much more than 180°C.
' t7 }9 L. J1 s6 z( X- r% X" H ' m( }7 Y7 S" r4 z
Decision: % R# Z o3 r! Q1 o. Z- `/ a- @
As the ignition temperature is not known over the life time, the ignition temperature of + ?( H# u+ D' Q2 U
the relevant material shall not be considered. |
|
|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