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本帖最后由 小米 于 2012-9-12 15:38 编辑 ( K" w% m8 i$ ~
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|  DSH 442 | Interpretation of “in close proximity" or “within a distance of 3 mm"8 U B' P5 \: E3 d
| 30.2' b+ F5 }8 [6 T, r
| 60335-1(ed.3)
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Standard: IEC60335-1:1991, 3rd Ed. p1 k! }3 U* j" R- P0 E c S
Sub clause: 30.2- {+ p& t* v9 F6 R
Sheet No.: DSH-442' W, ^* Y6 a: |
Subject: Interpretation of “in close proximity" or “within a distance of 3 mm"6 C, s" b+ A _
Key words: -close proximity - within a distance of 3 mm
- }- ^) T" U! X! K5 lDecision taken at the 40th CTL meeting 2003.
3 B1 H0 B* U7 y/ Q9 M- S3 XQuestion:/ Y1 U: \ }$ c9 r5 @9 a
In the note of sub-clause of 30.2.2 of IEC60335-1:1991, 3rd Ed. , "In close proximity" is
' g- [8 z8 s2 G) Uconsidered to be a distance not exceeding 3 mm. Some say the distance means clearance or
6 U8 T: x; Z. L$ NCreepage distance and the others say it means shortest distance regardless of any non-metallic
2 U* X3 J. `4 f' {2 T" w% Fmaterials between them. How should it be interpreted?# e# a4 l- J' w
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发表于 2012-9-12 15:36
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