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本帖最后由 小米 于 2012-9-12 15:38 编辑 ' x& d5 F/ r u& V3 m+ w% Q) {
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|  DSH 442 | Interpretation of “in close proximity" or “within a distance of 3 mm"
" Q0 A( @8 Z( |6 `! C | 30.2
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Standard: IEC60335-1:1991, 3rd Ed3 o- h7 n) z# u8 ?5 ?
Sub clause: 30.26 @8 }3 x# ]# r4 _7 ?2 c
Sheet No.: DSH-442$ Q" D A( ~8 E( i
Subject: Interpretation of “in close proximity" or “within a distance of 3 mm"% V8 R( d% _# {( m7 J: a' Q
Key words: -close proximity - within a distance of 3 mm
: Y9 Y( r, Y5 G, [$ [Decision taken at the 40th CTL meeting 2003.
4 a: E- J/ _! F5 @9 S8 g& PQuestion:
3 r% }" o# a+ jIn the note of sub-clause of 30.2.2 of IEC60335-1:1991, 3rd Ed. , "In close proximity" is
+ s' S4 |& A2 A/ P5 y: hconsidered to be a distance not exceeding 3 mm. Some say the distance means clearance or
% D6 n* H& }# X8 U; l+ @6 q5 MCreepage distance and the others say it means shortest distance regardless of any non-metallic! x' x. q: v9 |* k* a" u
materials between them. How should it be interpreted?1 I, o+ ]" c, H2 F
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发表于 2012-9-12 15:36
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