Hi John After resistor you might have ES1 circuit and safety distances do not apply. However resistor need to comply with special requirements of Annex G.
See table 4 for ES1 limit for DC current. I think it is 2mA. You have to simulate short accross resistor unles resistor comply with searate requirements Similar as limited current circuit in 60950-1. I hope this helps. Best regards Bostjan Glavic SIQ Ljubljana Poslano iz Outlook za Android<https://aka.ms/AAb9ysg> ________________________________ Od: John Woodgate <[email protected]> Poslano: sobota, april 27, 2024 4:18:41 PM Za: [email protected] <[email protected]> Zadeva: [PSES] IEC 62368-1: clearance and creepage CAUTION: This email originated from outside of our organisation. Do not click links or open attachments unless you recognise the sender and know the content is safe. It isn't clear to me whether the requirements of 5.4.2 and 5.4.3 (Edition 4) apply if the product remains safe with relevant clearances and creepages short-circuited (one at a time). The specific case is at a point fed by a 1 kV DC source behind two 4.7 megohm resistors in series. Please advise. -- OOO - Own Opinions Only Best wishes John Woodgate, Rayleigh, Essex UK Keep trying [https://s-install.avcdn.net/ipm/preview/icons/icon-envelope-tick-green-avg-v1.png]<http://www.avg.com/email-signature?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=emailclient> Virus-free.www.avg.com<http://www.avg.com/email-signature?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=emailclient> ________________________________ 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: https://www.mail-archive.com/[email protected]/ Website: https://ewh.ieee.org/soc/pses/ Instructions: https://ewh.ieee.org/soc/pses/list.html (including how to unsubscribe)<https://ewh.ieee.org/soc/pses/list.html> List rules: https://ewh.ieee.org/soc/pses/listrules.html For help, send mail to the list administrators: Mike Sherman at: [email protected]<mailto:[email protected]> Rick Linford at: [email protected]<mailto:[email protected]> For policy questions, send mail to: Jim Bacher at: [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: https://www.mail-archive.com/[email protected]/ Website: https://ewh.ieee.org/soc/pses/ Instructions: https://ewh.ieee.org/soc/pses/list.html (including how to unsubscribe) List rules: https://ewh.ieee.org/soc/pses/listrules.html For help, send mail to the list administrators: Mike Sherman at: [email protected] Rick Linford at: [email protected] For policy questions, send mail to: Jim Bacher: <[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
