As others have posted I think goes way back to the time when you had to hire a VDE engineer to come over the US about every 6 months and then witness the test for themselves. A whole slew of things have changed since then, include harmonization of the emissions limits international agreement to test facility national accreditation of the labs and mutual agreements to accept accredited test body results etc. Obviously there is still the whole other issue as ED said - what is a critical components etc, including the message snippet that you include below. I remember it, but haven't seen it required by US test facilities in 10 or 20 years.
Gary -----Original Message----- From: John Woodgate [mailto:[email protected]] Sent: Wednesday, March 13, 2013 1:13 PM To: [email protected] Subject: Re: [PSES] Critical component in EMC report In message <20913492.1771256.1363202897828.JavaMail.root@vms170033>, dated Wed, 13 Mar 2013, [email protected] writes: >Where do you draw the line without having to do a great deal of testing >to determine what truly is critical from an EMC peformance point of >view? Indeed. I don't recall that any IEC or CISPR standard mentions 'EMC critical components'. It's in most if not all safety standards, and most components don't affect, or don't directly affect, safety. -- OOO - Own Opinions Only. See www.jmwa.demon.co.uk SHOCK HORROR! Dinosaur-like DNA found in chicken and turkey meals John Woodgate, J M Woodgate and Associates, Rayleigh, Essex UK - ---------------------------------------------------------------- This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to <[email protected]> All emc-pstc postings are archived and searchable on the web at: http://www.ieee-pses.org/emc-pstc.html 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. Website: http://www.ieee-pses.org/ Instructions: http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas <[email protected]> Mike Cantwell <[email protected]> For policy questions, send mail to: Jim Bacher: <[email protected]> David Heald: <[email protected]> - ---------------------------------------------------------------- This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to <[email protected]> All emc-pstc postings are archived and searchable on the web at: http://www.ieee-pses.org/emc-pstc.html 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. Website: http://www.ieee-pses.org/ Instructions: http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas <[email protected]> Mike Cantwell <[email protected]> For policy questions, send mail to: Jim Bacher: <[email protected]> David Heald: <[email protected]>
