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不知道是不是这份264文件
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Standard: IEC 60598-1/1999 * }( u3 s6 O# |
Sub clause: 4.15
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Sheet N°: 264/03
P7 A, d3 Z) z2 m& E* i3 M) W" KPage: 1(1)
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Subject: Flammable materials ) W8 J, G& J$ h) d+ x
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Key words: " E& D$ h# n4 u# V( h& W8 \1 |
- Ignition
; }, ^1 h0 B5 k! ~temperature
( N% Q" @3 j, B# o* ?- Life time % Q7 s; k5 {$ Z# i
- Glow wire test 3 ?+ c/ a" s! ^4 r+ t X5 T
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Meeting:
" @/ B2 U2 i. Q/ `7 x# G( u% OOSM/LUM No. 19
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# }: W8 _. r( J5 f3 a" J+ mItem: 13.1.9
b) q5 Q w2 F; s$ iQuestion: 4 x K! ?1 \3 @
Covers / shades and similar parts, which do not withstand the 650°C glow wire test, 7 h- l9 _( L9 l! @8 z
shall be adequately spaced from any heated part that could raise the material to its
) T8 _) K7 f* T+ A& wignition temperature. Generally the temperature of the lamp or the ballast /
/ z v1 [# T, g7 ~transformer will not rise the material to its ignition temperature, because the maximum
6 ?! X4 f; e& q9 z9 ^( O! n6 Htemperature of the outside of a (compact) fluorescent lamp or small incandescent ) L% P, k7 h, P( R
lamp is simply too less. Besides there is a difference between the flash-ignition
4 N2 m. l0 P6 X3 ` _. itemperature of materials. Practical example is a lighting chain with plastic decorative $ n9 Z6 m% e+ e
cover, spaced about 15 mm from the lamp. The maximum temperature on the outside # l; a( Z d6 b! v% Q% P
of the lamp (measured during the bridging test) was 180°C and the ignition
$ R& K, N c: t8 w- b5 g9 Utemperature of the relevant material is much more than 180°C.
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Decision: 7 H: t& q" W/ F; Z/ N& V- Y
As the ignition temperature is not known over the life time, the ignition temperature of
$ w ?: t" J& cthe relevant material shall not be considered. |
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发表于 2010-11-18 13:41
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