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不知道是不是这份264文件
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' D$ u, Z! T+ Q eStandard: IEC 60598-1/1999 & E+ Q' g! \( a" |
Sub clause: 4.15 " o- D7 e- w0 ]9 u
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Sheet N°: 264/03 ' | P5 i u' S+ _3 R5 Y' h* r
Page: 1(1) + s4 V v3 W( v: W$ B
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Subject: Flammable materials ; V" R1 S) N* J
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Key words: & |, f5 g7 u0 W }1 K; ~
- Ignition
6 w0 }* [6 P5 A+ Ntemperature h" c M( y! S4 N/ w$ n
- Life time
1 I" z8 O( U) v5 P; e- Glow wire test 4 \6 K* D) G& Q" h5 a
; [" n6 o" F1 YMeeting:
$ w3 e" `' C8 r/ |2 u& M. C% G4 }OSM/LUM No. 19 # m) d/ e Q) J5 ^# C
$ r$ K% v3 o4 b/ ~0 i' _5 V, wItem: 13.1.9 7 {) K1 z9 F8 O. _ @
Question: , O! e0 O: V! u$ V& w
Covers / shades and similar parts, which do not withstand the 650°C glow wire test,
) F5 z( X! X6 R, @/ Rshall be adequately spaced from any heated part that could raise the material to its
. m, f& r8 C% L) hignition temperature. Generally the temperature of the lamp or the ballast / 8 @1 s6 n& h( d' C% V: s5 v( R# }
transformer will not rise the material to its ignition temperature, because the maximum ; Q% l. k( o3 X9 ^! o! b
temperature of the outside of a (compact) fluorescent lamp or small incandescent 3 z! V F! j* n
lamp is simply too less. Besides there is a difference between the flash-ignition
6 X; q( E2 ]$ k% T# Y& @& gtemperature of materials. Practical example is a lighting chain with plastic decorative
# N9 H! \, `( m) ]. i! t, bcover, spaced about 15 mm from the lamp. The maximum temperature on the outside
8 p0 A2 A( v, C, P8 Rof the lamp (measured during the bridging test) was 180°C and the ignition 0 T# h" g% _- W6 Z
temperature of the relevant material is much more than 180°C. ; a; b* ?* f3 f, @4 X' G
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Decision:
{1 o% U# F* B: K8 U5 }0 y1 Z3 r% UAs the ignition temperature is not known over the life time, the ignition temperature of
* V. I# l7 U. m! F6 e1 T# E6 c8 ]the relevant material shall not be considered. |
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发表于 2010-11-18 13:41
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