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本帖最后由 小米 于 2012-9-12 15:38 编辑
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|  DSH 442 | Interpretation of “in close proximity" or “within a distance of 3 mm"2 _! P/ g- K. ^7 ?
| 30.2
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1 |3 w, s0 e3 X( e" ^4 xStandard: IEC60335-1:1991, 3rd Ed0 c; p9 P! v6 d; U! L
Sub clause: 30.2. v" v H. b0 {$ N
Sheet No.: DSH-442' j5 V: H! |0 o* J: s' S' }" o
Subject: Interpretation of “in close proximity" or “within a distance of 3 mm"0 [' C9 S9 P' K2 f
Key words: -close proximity - within a distance of 3 mm
5 Z( F6 V) H% L% ~# C( z5 RDecision taken at the 40th CTL meeting 2003.
8 Y! g2 }/ m; M4 [Question:
$ Y- {2 Z: ]) e0 e: v9 aIn the note of sub-clause of 30.2.2 of IEC60335-1:1991, 3rd Ed. , "In close proximity" is
# |3 p+ x9 P0 j! R. y: \considered to be a distance not exceeding 3 mm. Some say the distance means clearance or9 V q+ v% N; Y) W' A
Creepage distance and the others say it means shortest distance regardless of any non-metallic/ Y# c% G- p+ y6 m
materials between them. How should it be interpreted?6 a5 Y+ t- M2 k+ G5 \, H
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发表于 2012-9-12 15:36
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