John, "No" means the switch is considered as the isolating switch and must be the type of all-pole switch.
I have learnt from some accredited laboratories to suggest changing the marking to “.” To avoid in breach of the |O marking for all-pole switch. Is it a way of compromise to this requirement in EN 60065? Regards, Scott From: [email protected] [mailto:[email protected]] On Behalf Of John Woodgate Sent: Saturday, September 15, 2007 3:16 PM To: [email protected] Subject: Re: I O power switch In message <[email protected]>, dated Sat, 15 Sep 2007, Scott Xe <[email protected]> writes: >The interpretation query came from EN 60065. Since the switch is an >addition to the mains plug to isolate the power supply, the designer >employs a single pole switch. If we use O, it seems to violate the >requirement but it is permitted if the switch is not considered as >isolating switch. No; if you look at 8.19.2, it requires an indication of the 'ON' condition, maybe by marking, and in that case refers to the whole of clause 5. The last paragraph of 5.4.2 restricts the IO marking to an all-pole mains switch. -- OOO - Own Opinions Only. Try www.jmwa.demon.co.uk and www.isce.org.uk There are benefits from being irrational - just ask the square root of 2. John Woodgate, J M Woodgate and Associates, Rayleigh, Essex UK - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. Website: http://www.ieee-pses.org/ To post a message to the list, send your e-mail to [email protected] 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] All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc ______________________________________________________________________ This email has been scanned by the MessageLabs Email Security System. For more information please visit http://www.messagelabs.com/email ______________________________________________________________________ - ---------------------------------------------------------------- This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. Website: http://www.ieee-pses.org/ To post a message to the list, send your e-mail to [email protected] 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] All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc
