Looks like the end product (SELV powered unit) does not meet the fire enclosure requirements of the standard; either openings in enclosure are too large or minimum flammability ratings for fire enclosure is not met. As such, requiring a limited power source (LPS) power supply (Class 2 output for us here in the US), eliminates the need for an enclsoure fully meeting the requirements in the standard. Peter Merguerian
--- On Wed, 9/16/09, Scott Douglas <[email protected]> wrote: From: Scott Douglas <[email protected]> Subject: Looking for Source of Requirement To: "'EMC PSTC'" <[email protected]> Date: Wednesday, September 16, 2009, 6:07 PM To All, I find this statement is a user manual: "This product is intended to be supplied by a Listed Power Unit, marked with “Limited Power Source,” “LPS” and “Class II” on the unit, and output rated ..." The product is usually approved to either ITE (60950) or to A/V (60065) standards. I am curious to know where this requirement comes from, specifically page, paragraph, and rule. I looked in both and did not find it. Can anyone point me to a source? As always, thanks in advance for your help. Kind regards, Scott - ---------------------------------------------------------------- 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] <http://us.mc1120.mail.yahoo.com/mc/[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] <http://us.mc1120.mail.yahoo.com/mc/[email protected]> > Mike Cantwell <[email protected] <http://us.mc1120.mail.yahoo.com/mc/[email protected]> > For policy questions, send mail to: Jim Bacher: <[email protected] <http://us.mc1120.mail.yahoo.com/mc/[email protected]> > David Heald: <[email protected] <http://us.mc1120.mail.yahoo.com/mc/[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]>
