Maybe a clarification sheet for IEC 60079-15 is needed.
Best regards
Helge Knudsen
Denmark
From: John Cochran [mailto:jcoch...@strongarm.com]
Sent: 28. september 2015 03:31
To: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: [PSES] Low Power exemption for ATEX / IECEx
In IEC 60079-15 Clause 13, Low power device or components are exempt from
evaluation of creepage and clearance, as defined in Clause 6.4 of the
standard. I designed a computer system which uses an i7 quad-core CPU
module (COMe). The problem is the module draws 37W of power, and Note 1 in
Clause 13 states Low power is typically considered 20W or less. The word
typically bothers me, but also the fact some competitors have gotten their
systems certified with a 45W i7 quad-core CPU. The notified body we are
using is insisting that our CPU cannot be approved. Does anyone in the
group have experience with certifying a higher wattage CPU module for
international hazardous locations?
Thanks,
John Cochran
STRONGARM Designs
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27-09-2015
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This message is from the IEEE Product Safety Engineering Society emc-pstc
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All emc-pstc postings are archived and searchable on the web at:
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Attachments are not permitted but the IEEE PSES Online Communities site at
http://product-compliance.oc.ieee.org/ can be used for graphics (in well-used
formats), large files, etc.
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