You might want to take a look at UL/IEC/EN 60950-1 which I know definitely has requirements for multiple power sources. 62368 may have guidance as well
Get Outlook for iOS<https://aka.ms/o0ukef> ________________________________ From: Richard Nute <[email protected]> Sent: Thursday, April 6, 2023 8:15:02 PM To: [email protected] <[email protected]> Subject: Re: [PSES] Multiple electrical power sources Hi Steve: The TV broadcast industry electronic products have used two (redundant) AC sources for their products for many years. You may have some help there. Rich From: Steve Brody <[email protected]> Sent: Thursday, April 6, 2023 1:42 PM To: [email protected] Subject: [PSES] Multiple electrical power sources A new question. A client's product is using two independent AC power sources on a product, but I can't find anything in 61010-1 60204-1 that provide any guidance on compliance. The obvious is that the sections of the product that are fed from source A or B are not interrelated in any way that would create a hazard for for the other section, that there be a warning label adjacent to each input that says there are multiple AC sources, and that each section has it's own circuit protection and disconnect, even if a facility disconnect is used for both. What am I missing? Thanks, Steve Brody [email protected]<mailto:[email protected]> C - 603 617 9116 - ---------------------------------------------------------------- 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]<mailto:[email protected]>> All emc-pstc postings are archived and searchable on the web at: http://www.ieee-pses.org/emc-pstc.html Website: http://www.ieee-pses.org/ Instructions: http://www.ieee-pses.org/list.html (including how to unsubscribe)<http://www.ieee-pses.org/list.html> List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Mike Cantwell <[email protected]<mailto:[email protected]>> For policy questions, send mail to: Jim Bacher <[email protected]<mailto:[email protected]>> David Heald <[email protected]<mailto:[email protected]>> ________________________________ To unsubscribe from the EMC-PSTC list, click the following link: https://listserv.ieee.org/cgi-bin/wa?SUBED1=EMC-PSTC&A=1 - ---------------------------------------------------------------- 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 Website: http://www.ieee-pses.org/ Instructions: http://www.ieee-pses.org/list.html (including how to unsubscribe) List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Mike Cantwell <[email protected]> For policy questions, send mail to: Jim Bacher: <[email protected]> David Heald: <[email protected]> _________________________________________________ To unsubscribe from the EMC-PSTC list, click the following link: https://listserv.ieee.org/cgi-bin/wa?SUBED1=EMC-PSTC&A=1
