DSH 442 Interpretation of in close proximity or within a distance of 3mm
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30.2
60335-1(ed.3)
Standard: IEC60335-1:1991, 3rd Ed
Sub clause: 30.2
Sheet No.: DSH-442
Subject: Interpretation of “in close proximity" or “within a distance of 3 mm"
Key words:-close proximity - within a distance of 3 mm
Decision taken at the 40th CTL meeting 2003.
Question:
In the note of sub-clause of 30.2.2 of IEC60335-1:1991, 3rd Ed. , "In close proximity" is
considered to be a distance not exceeding 3 mm. Some say the distance means clearance or
Creepage distance and the others say it means shortest distance regardless of any non-metallic
materials between them. How should it be interpreted?
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