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不知道是不是这份264文件
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Standard: IEC 60598-1/1999
7 ^- i! W' F2 p5 E9 _5 RSub clause: 4.15
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Sheet N°: 264/03
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" g; `+ h0 n9 |, kSubject: Flammable materials ( y: M: F, S# W! n
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Key words:
/ ^; A2 P N6 U- Ignition # l& G: i; d6 q/ o9 v1 M$ f
temperature
% A, ?" n6 p. H- Life time
' U/ y& q9 d: M0 l- Glow wire test 0 S( A5 a7 w. U4 S
9 G- P4 T0 o8 B2 r5 Y% @Meeting: ) a& y4 j" ?/ y- d' c
OSM/LUM No. 19
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Item: 13.1.9
1 j9 ~' k* I8 E0 G$ NQuestion: # ?/ `& g. I9 P
Covers / shades and similar parts, which do not withstand the 650°C glow wire test, , r( k% O/ C9 R# J- x+ Z' k) b
shall be adequately spaced from any heated part that could raise the material to its 2 {, u4 A4 m8 \
ignition temperature. Generally the temperature of the lamp or the ballast /
5 l5 U+ @2 `4 J) B& S! ytransformer will not rise the material to its ignition temperature, because the maximum
0 p) ]6 ?2 |# E! B7 o- E6 w6 Ytemperature of the outside of a (compact) fluorescent lamp or small incandescent . F- l/ c8 W" v
lamp is simply too less. Besides there is a difference between the flash-ignition 7 U( y, ?0 ~6 l6 N
temperature of materials. Practical example is a lighting chain with plastic decorative
2 Q$ N# ~& ?% G3 \& s" b4 D: v ~cover, spaced about 15 mm from the lamp. The maximum temperature on the outside
- Q$ G3 | S G6 K5 I4 Aof the lamp (measured during the bridging test) was 180°C and the ignition
) g$ \+ x, R! ]% _( \8 Ytemperature of the relevant material is much more than 180°C. 4 a) O8 ]3 p/ J) ]0 m
b- ?5 o B; @) T( E; J" J+ }Decision:
* F% t% }" L9 l, SAs the ignition temperature is not known over the life time, the ignition temperature of ! R! x. e4 D2 t0 R/ s
the relevant material shall not be considered. |
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发表于 2010-11-18 13:41
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