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不知道是不是这份264文件+ F, D9 i9 H# Q4 q
' Z) F2 L/ l6 O0 V) YStandard: IEC 60598-1/1999
9 _" v- K. C c5 ^Sub clause: 4.15 8 s+ q" `: Y4 @ v
1 Y* U2 J$ L& J5 I
Sheet N°: 264/03
4 R. p6 M6 e8 U1 n: UPage: 1(1)
7 h& K0 u, j8 ?' a+ }) n% q
3 ], X% Q# q$ M H3 q# SSubject: Flammable materials ) {3 w8 y+ o+ `( ]* d9 o5 E; S T
% w" R6 n! \& j6 z/ AKey words: : R5 h; j8 Q4 | W
- Ignition 6 m4 p& @# Q3 O5 H$ |- X7 l
temperature ( ]5 B( L8 w: V5 D4 }
- Life time 8 ~6 F' C$ u+ U& F# c6 d/ B
- Glow wire test
% g: D) ?3 s5 r' d3 B- _! R
: Y% G6 v" o$ ~( Y5 c$ Q* PMeeting: & v% V% e2 o9 ?7 `
OSM/LUM No. 19 * K- e7 y4 l. N4 g' b
+ G: F- f4 E5 p/ sItem: 13.1.9 ) M, @( ]8 b' `/ @$ G7 U0 B. h- } ^
Question:
$ @& z( s1 G& N8 r Covers / shades and similar parts, which do not withstand the 650°C glow wire test, 0 s" g" H% k0 w) _" ]
shall be adequately spaced from any heated part that could raise the material to its ! L$ e9 U, p' o
ignition temperature. Generally the temperature of the lamp or the ballast /
3 [; N+ q# T6 Stransformer will not rise the material to its ignition temperature, because the maximum ( `+ n9 Z1 v' B) f1 k+ M
temperature of the outside of a (compact) fluorescent lamp or small incandescent , k V7 m- N% i4 G0 c! N
lamp is simply too less. Besides there is a difference between the flash-ignition * O1 _* X; |, n. B
temperature of materials. Practical example is a lighting chain with plastic decorative
, V4 ^1 l% @9 Ccover, spaced about 15 mm from the lamp. The maximum temperature on the outside
( R% h2 v& n% X3 | a; cof the lamp (measured during the bridging test) was 180°C and the ignition % {, U0 i' F; ]& ~& u9 ]7 `
temperature of the relevant material is much more than 180°C. - b1 v8 _8 \: h! @8 M
( a- s- c! R/ D/ r/ `/ @3 V
Decision:
, G4 t- b- ]3 jAs the ignition temperature is not known over the life time, the ignition temperature of
% {# A6 T# A; r5 Wthe relevant material shall not be considered. |
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