Thank you to all who provided a response to my question. Your input and comments are, as always, greatly appreciated.
Happy Holidays to all I look forward to seeing you at ISPCE in Dallas in May. Best regards, > On 12/01/2022 3:51 PM Steve Brody <sgbr...@comcast.net> wrote: > > > I have a client who has a secondary pwb that has traces and vias that may > have 100 vdc on them adjacent to ground. > > Per 61010-1 there is a requirement for spacing and/or dielectric test, > both depending on what the mains voltage is. > > The question is why is the mains voltage a consideration or concern if > the 100vdc secondary voltage is several layers of impedance and circuitry > from the mains? > > Is it a concern that a surge on the mains would trickle down to the > secondary circuit, or is there another reason/rationale? > > I suggested that a dielectric test per Table 6 [in A1] would suffice and > put the issue to rest for this product, but the question from the designers > remains as to why is it a concern in the standard of what the mains voltage > is. > > Is there anything in the standard, that I haven't found, that does not > require Table 6 to be followed if there is no way for a mains surge to impact > the secondary voltage? > > I look to the experts for an explanation. > > Thanks, > > Steve Brody > sgbr...@comcast.net mailto:sgbr...@comcast.net > 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 > <emc-p...@ieee.org mailto:emc-p...@ieee.org > > > 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 <mcantw...@ieee.org mailto:mcantw...@ieee.org > > > For policy questions, send mail to: > Jim Bacher <j.bac...@ieee.org mailto:j.bac...@ieee.org > > David Heald <dhe...@gmail.com mailto:dhe...@gmail.com > > > > --------------------------------------------- > > To unsubscribe from the EMC-PSTC list, click the following link: > https://listserv.ieee.org/cgi-bin/wa?SUBED1=EMC-PSTC&A=1 > Steve Brody sgbr...@comcast.net mailto:sgbr...@comcast.net 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 <emc-p...@ieee.org> 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 <mcantw...@ieee.org> For policy questions, send mail to: Jim Bacher: <j.bac...@ieee.org> David Heald: <dhe...@gmail.com> _________________________________________________ To unsubscribe from the EMC-PSTC list, click the following link: https://listserv.ieee.org/cgi-bin/wa?SUBED1=EMC-PSTC&A=1
