Here is a typical red tape example on interpretation of two very similar standards. However the IEC/TC 108 try to unify these two standards (950 and 65). Better is to work with an "open mind" testing house or Agency.
Steli Loznen, M.Sc., SM-IEEE Q.A & Certification Manager I.T.L (Product Testing) Ltd. Convener IEC/TC62/SC62A/WG17 1 Bat Sheva St., POB 87 Lod 71100, Israel V: +972-(0)8-9153100 Ext.203 F: +972-(0)8-9153101 M: +972-(0)54-7245794 [email protected] http://www.itl.co.il From: Umbdenstock, Don [mailto:[email protected]] Sent: Thursday, December 03, 2009 2:39 PM To: [email protected] Subject: Re: [PSES] IEC 60065 vs IEC 60950-1 Although they both address the same hazard, they do so differently. As I recall from an issue I had a couple of years ago from a similar situation, 60950 allowed a product to be built without a fire enclosure if it was powered by a Class II or certified LPS power supply along with certain other conditions, whereas 60065 mandated that the power input was no greater than 15W. Thus there were 2 different approaches to controlling the same hazard. This might be part of why your agency is hedging a bit. On the other hand, a more reasonable agency sounds more logical... Don Umbdenstock My own opinion. From: [email protected] [mailto:[email protected]] On Behalf Of James, Chris Sent: Thursday, December 03, 2009 5:10 AM To: Scott Douglas; EMC PSTC Subject: RE: IEC 60065 vs IEC 60950-1 Scott - I would agree with John - press your case with them or take the business elsewhere. There's nothing to say they HAVE to be tested to the same standard, bottom line is you (the customer) are seeking to prove presumption of conformity to a suitable safety standard applicable to the item. If having them tested to different standards satisfies your needs then they should comply. If the speaker system is powered by an EPS does it require testing at all? Chris From: [email protected] [mailto:[email protected]] On Behalf Of Scott Douglas Sent: 03 December 2009 05:43 To: 'EMC PSTC' Subject: IEC 60065 vs IEC 60950-1 There is a product that is a speaker system. It could be connected to a computer and be considered ITE. It can also connect to other audio sources that are not computers and so could be considered AV. The primary market target is not computers, but other devices. The product is powered by an External Power Supply (EPS). The EPS is already approved to IEC/EN/UL 60950-1 (ITE). A safety agency was asked to test the product to IEC/EN/UL 60065 (AV). The agency said the EPS and product should be tested to the same standards in order to be consistent. If they test the product to the AV standard, they say they will treat the EPS as an unapproved component, implying they will do all the extra testing normally done for an EPS. But if they test the product to the ITE standard, then they do not need to test the EPS at all. UL 60065 makes allowances to accept a power supply tested under UL 60950-1. I do not find these same allowances directly within IEC/EN 60065. My comment was that the product should be tested without regard for the EPS provided the EPS is a Class II LPS supply (it is). And the test reports for the product should just say that the product is required to be provided with or to use a Class II LPS supply. Is there anything in IEC/EN 60065 that permits or prevents using a IEC/EN/UL 60950-1 EPS with the product? Or that would require such an EPS to be treated as an unapproved component? Any suggestions on what to tell the safety agency? Thank you for your comments. Scott Douglas - 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.ieeecommunities.org/emc-pstc Graphics (in well-used formats), large files, etc. can be posted to that URL. 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.ieeecommunities.org/emc-pstc Graphics (in well-used formats), large files, etc. can be posted to that URL. 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.ieeecommunities.org/emc-pstc Graphics (in well-used formats), large files, etc. can be posted to that URL. 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.ieeecommunities.org/emc-pstc Graphics (in well-used formats), large files, etc. can be posted to that URL. 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]>
