Hi Boštjan
Great input! 2500V test will be done. The PCB temperature was measured to maximum 80C degrees. But will the clearance distance apply anyway? BR Amund Fra: Boštjan Glavič Sendt: 5. november 2024 17:54 Til: [email protected] Emne: Re: [PSES] Creepage Live-Ground Hi Amund, Correct. Hipot shall be higher, 2500VDC for OVC II. Please keep in mind that 90degC limit applies for complete PCB. This limit is somehow connected to delamination of PCB. It is considered if temp is below 90degC, no delamination is likely. Best regards, Boštjan From: Amund Westin <[email protected] <mailto:[email protected]> > Sent: Tuesday, November 5, 2024 5:39 PM To: Boštjan Glavič <[email protected] <mailto:[email protected]> >; [email protected] <mailto:[email protected]> Subject: SV: [PSES] Creepage Live-Ground Thanks Boštjan PCB temp is below 90C. So, it means no actual creepage distance requirement, but high-voltage test (1500V) must be done? BR Amund Fra: Boštjan Glavič Sendt: 5. november 2024 17:26 Til: 'Amund Westin' <[email protected] <mailto:[email protected]> >; [email protected] <mailto:[email protected]> Emne: RE: [PSES] Creepage Live-Ground Dear Amund, Depends on many factors. 1. If PCB temperature is less than 90degC then only dti applies, without the need for cemented joint test. Since you are talking about basic insulation, there is no minimum dti for basic, just hipot test. 2. If temperature of PCB is above 90degC, then either * You perform thermal cycling test to reduce inner pollution degree to PD1, then minimum creepage is same as minimum clearance (table 10 with input of TOV and table 14 with input of transient level). * You perform cemented joint test and apply same as under 1) * You comply with the same requirements as for top/bottom distances (table 10 with input of TOV and table 14 with input of transient level). If you have OVC II and PD2 and TOV of 2000V, minimum required creepage (without reduction for inner layers) is 2,3mm coming from table 17 I hope this helps. Best regards, Boštjan From: Amund Westin <[email protected] <mailto:[email protected]> > Sent: Tuesday, November 5, 2024 2:51 PM To: [email protected] <mailto:[email protected]> Subject: [PSES] Creepage Live-Ground 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. Pin with 230VAC through the FR4 PCB with spacing to the inner ground plane. Creepage: Which table in the EN 62368-1:2020 apply? BR Amund _____ This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. 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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: https://www.mail-archive.com/[email protected]/ <https://www.mail-archive.com/[email protected]/%20> Website: https://ewh.ieee.org/soc/pses/ <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 <https://listserv.ieee.org/cgi-bin/wa?SUBED1=EMC-PSTC&A=1> &A=1 - ---------------------------------------------------------------- This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. 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