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jsspace 发表于 2014-6-27 08:38 i5 `2 h9 _" y4 q! M* c
以前小家电我记得SELV是不用做球压的
" z; w. F0 J+ ?# u# {6 D* ^难道小家电就不用考虑过热?
$ \' w% C% O/ s: e9 ~4 p可以对比下两个标准的描述:家电没有提及SELV, 符号8.1.4要求的不算live part,也就不用做, 灯具直接提及SELV也需要,我想主要是从使用环境上考虑。灯具允许直接与可燃物接触。& N, R5 U: f+ B5 X' h7 k- m( ~) s
7 a0 z6 g% }. m' b13.2 Resistance to heat (EN 60598:2008)6 h- j+ X% I% y, U7 y' Z
External parts of insulating material providing protection against electric shock, and parts of2 O# X& H9 i- ~& x% C7 h7 O( N( s8 y
insulating material retaining current-carrying parts or SELV parts in position shall be sufficiently& u5 O$ r- `1 @4 `1 {5 V
resistant to heat.$ j! ]+ m# u2 @
The ball pressure test does not have to be applied to plastic parts of a luminaire which provide' M+ q, h. W! w: D) a% A, t3 f
supplementary insulation." Z7 e i# B" I& d1 g8 n
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live part" }* P7 i2 g `8 ~& m, B A5 t
conductive part which may cause an electric shock in normal use. The neutral conductor is,however, regarded as a live part.
5 O4 r$ z$ o& R6 X7 _NOTE The test to determine whether or not a conductive part is a live part which may cause an electric shock is
( Y* h3 N1 l) I2 \given in Annex A.8 `& b! E8 ?7 ^9 U( I7 |: N, W
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, H& V R/ n" p30 Resistance to heat and fire (EN 60335-1:2012)
# u& d6 {9 k8 G) H6 M1 o3 J30.1 External parts of non-metallic material, parts of insulating material supporting live3 ]2 O8 {- N( T! p% ~: Y& o3 B; L
parts including connections, and parts of thermoplastic material providing supplementary/ i0 F. K8 W" |8 l/ [: v/ o m- W+ K& i
insulation or reinforced insulation, shall be sufficiently resistant to heat if their deterioration7 o& |1 E1 O2 S% H
could cause the appliance to fail to comply with this standard.
( C6 u4 K3 g6 Z8 e UThis requirement does not apply to the insulation or sheath of flexible cords or internal wiring.) C+ t+ ?1 ^! l( Z: `
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3.6.4& D0 m" \6 D; H: e+ C
live part1 \7 M/ h0 E( U" c. h8 j. \1 o
conductor or conductive part intended to be energized in normal use, including a neutral7 {- o* R! t8 }5 q F0 |
conductor but, by convention, not a PEN conductor
+ V" }- d5 o' L7 E8 yNOTE 1 Parts, accessible or not, complying with 8.1.4 are not considered to be live parts.; ?: H4 S& @9 d" C' A& t! F( p
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