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不知道是不是这份264文件
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. B9 W6 x+ x5 W# x, p1 SStandard: IEC 60598-1/1999
~$ T0 x, M' e1 q* |( pSub clause: 4.15
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7 T/ ^5 Y. z: Y3 v1 o: BSheet N°: 264/03 1 s# v( ^! m/ }" H
Page: 1(1) 7 _) m' g2 O5 V$ Y; s! I" `! c
* B: F4 n! S5 Y0 q0 USubject: Flammable materials - q* t# u4 h4 T- C1 g
* S: u) V6 y- p' c1 MKey words: 4 F( X- G$ c! N: C b, F
- Ignition ) R. E: G+ Y: K: C1 J1 \
temperature
6 l& f ~" n A- Life time " E6 `% D T- H7 _4 ~
- Glow wire test + P9 H4 @+ [2 S& J5 s
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Meeting:
: ]) Y5 L. |. P: OOSM/LUM No. 19
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Item: 13.1.9 5 L8 N7 k; Q0 X1 ?* S3 n+ O
Question: d1 }0 [& D& ]4 l, Y$ Q
Covers / shades and similar parts, which do not withstand the 650°C glow wire test,
7 \, Q0 c, c% h8 n4 U3 @) p; v5 Vshall be adequately spaced from any heated part that could raise the material to its
5 Z, i* m8 O% Q; m- H' {ignition temperature. Generally the temperature of the lamp or the ballast / % j" F: x. n: v+ n9 O
transformer will not rise the material to its ignition temperature, because the maximum
, m) \- o' `9 _temperature of the outside of a (compact) fluorescent lamp or small incandescent Y7 c% c7 G4 z' a5 |% H6 M$ B
lamp is simply too less. Besides there is a difference between the flash-ignition , h/ V9 @; @/ L6 b6 t
temperature of materials. Practical example is a lighting chain with plastic decorative
, H9 v2 t( A% }7 s# [# l3 F0 L. wcover, spaced about 15 mm from the lamp. The maximum temperature on the outside
% J& ?6 v+ e v' Fof the lamp (measured during the bridging test) was 180°C and the ignition : y" p# @) [6 M$ {2 p: c: b# x
temperature of the relevant material is much more than 180°C. + f' d2 `4 V( b' R) n F" B1 B3 S
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Decision:
! x2 T3 u6 q( W6 _. i2 _2 fAs the ignition temperature is not known over the life time, the ignition temperature of ; A$ g5 T+ K1 }! v
the relevant material shall not be considered. |
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发表于 2010-11-18 13:41
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