'UL', as an organization or a standard is not considered "valid", nor is it considered "not Valid" in Canada. UL's accreditation as an NRTL does not necessarily give it any standing in Canada - the NRTL program is administered by the U.S. OSHA. The Canadian government administers their own programs for compliance with the Canadian Electric Code.
The CSA and UL have produced several bi-national standards, and UL and CSA have MRAs for some products. 'cUL' is not "better", it is required, for some products, to place on the market in Canada. The national version of IEC 60950-1, for North America, is published as the bi-national standard CSA C22.2 No 60950-1-07, UL 60950-1 2d Ed. Limits for exposed circuits that are 'safe to touch' are dependent on the operating environment and the intended end-use installation. If the environment is CO, then UL/CSA 60950-1 has national-specific TNV/SELV requirements, and the CEC has additional requirements, depending on wiring location. That is, while 48V is low enough V to not require LCC, there are also fire-code requirements. luck, Brian From: emc-p...@ieee.org [mailto:emc-p...@ieee.org]On Behalf Of Kevin Keegan Sent: Friday, June 06, 2008 5:45 AM To: Paul Dobrovolny; emc-p...@ieee.org Subject: Re: need for cUL/CSA approvals on 48VDC electrical distribution equipment Hi Paul, I'm not sure why you are saying UL is not valid in Canada. They are an NRTL and therefore recognized. I agree a cUL would be better if there is a specific requirement difference for Canada. Regards, Kevin Keegan Senior Associate KES & Associates 1 Stonecroft Terrace Kanata, Ontario Canada K2K 2V1 Tel: 613-592-0820 Email: kkee...@kesandassociates.com On 5 Jun 2008 at 22:16, Paul Dobrovolny wrote: > > Hi > > I'm wondering if there are safety standards, perhaps such as IEC/UL 60950, > that requirea safety approvals certification file listing on 48VDCelectrical distribution equipment > - i.e. fused disconnect switch, with blown fuse indicator (could be a QIFFI fuse or electronic > circuit module). > Application is a station battery needinga 1200A disconnect means,with 66 kA short- circuit amps > capability. > > I've found that some OEMs offer only products with UL recognition - which is notvalid in > Canada. > Other OEMs (even Canadian ones) claim that approvals are unnecessary because 48V is a safe > touch voltage (never mind the energy discharge and arc flashhazards!) > signed, "PERPLEXED" > Thanks! > > Please reply directly to: > ============================ > Paul.Dobrovolny <at> nasittuq.com - 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 emc-p...@ieee.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 emcp...@ptcnh.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher: j.bac...@ieee.org David Heald: emc-p...@daveheald.com All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc
