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不知道是不是这份264文件7 B9 i4 ]; G. f3 l! k
% J [' A' b' V- [3 O8 ?1 R; r6 aStandard: IEC 60598-1/1999
1 C* l, a+ T$ l* ^' \4 ?% e- QSub clause: 4.15
4 R$ \9 e' @* H5 ] 2 O& R7 s i" ?9 R/ \# L
Sheet N°: 264/03 5 W+ n$ `: G& M& ]
Page: 1(1) 7 o8 H7 v* A& y E* I/ Y. `7 G' S
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Subject: Flammable materials . l5 F( I% F; m l4 z- F3 f
0 @5 F; b3 ]# c( Z* a. t3 _; C# SKey words:
4 X- f" A: r1 @3 D* B/ C- Ignition
' {1 ^' I! E; Htemperature
}& j% o; z! g- Life time 5 [1 S- U$ B0 I9 l6 S
- Glow wire test 6 Y J% G) w* m" W( `' I. a
2 m! h3 ~* }) C) F4 h, ~' n+ f
Meeting:
* k- w, m* D+ h4 N! C5 fOSM/LUM No. 19 7 L; f" c% `6 |; d7 w
7 z% z& Q1 T* r z1 \2 s; oItem: 13.1.9 3 U- ^- `% D0 N- ~
Question:
+ I6 h8 n. Q( O. W r Covers / shades and similar parts, which do not withstand the 650°C glow wire test, # K1 C4 ^7 F3 [; F$ h
shall be adequately spaced from any heated part that could raise the material to its ! d8 w$ }$ d' e: @
ignition temperature. Generally the temperature of the lamp or the ballast / ( c+ i1 b2 ^) @) S
transformer will not rise the material to its ignition temperature, because the maximum . S/ L' v P6 x5 ]
temperature of the outside of a (compact) fluorescent lamp or small incandescent
& C7 e3 h3 w. P; l$ Y' ?0 y# k' hlamp is simply too less. Besides there is a difference between the flash-ignition
. m2 J, C+ K: `5 Q6 ktemperature of materials. Practical example is a lighting chain with plastic decorative
( H0 k% |$ F- E+ Z- l) s& L4 c1 |cover, spaced about 15 mm from the lamp. The maximum temperature on the outside
/ F& o$ l3 }% w. L' K! A2 o0 iof the lamp (measured during the bridging test) was 180°C and the ignition : X' Y* F3 T1 \) @5 V! y' F
temperature of the relevant material is much more than 180°C. & e8 S C4 }' b+ }
+ f# z( J: `3 Z- D9 P, U" WDecision: 8 Z" s! E; S, m& q A( D
As the ignition temperature is not known over the life time, the ignition temperature of ! Z+ T( v# g* h, k$ @0 P: A0 E4 b$ l7 {
the relevant material shall not be considered. |
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