Hi Amund, In the term of IEC 62368-1 it would be considered as resistive PIS. You need to apply fire cone to PIS and check if combustible material is inside fire cone. If it is inside, special flammability requirements apply.
You have also other options to prove that combustible material is acceptable, maybe if it is small part (<4g) or it passes fault condition or… Clause 6.4 is very extensive and gives a lot of options. Best regards, Boštjan Glavič SIQ From: Amund Westin <[email protected]> Sent: Thursday, October 27, 2022 7:14 AM To: [email protected] Subject: [PSES] Clearance components 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. Folks, IEC62368-1 or maybe any standards since it would concern all kind of electronics … * Clearance / spacing from a warm component and to nearby components/parts that might be combustible, is this categorized as the PIS issues (Potential Ignition Source) or is it a different category? In this case, it’s a component that dissipate heat, but I assume for sure that the energy is way below the PIS 15W limit. * Best regards Amund - ---------------------------------------------------------------- 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
