Hello Brian,
I Cannot comment on each and every factory, but in my previous employment(s) this was definitely the case. Regards Steve Clarke Test Engineer Unit 3 Compliance Ltd EMC : Electrical Safety : Environmental & Vibration : CE & UKCA : Consultancy <http://www.unit3compliance.co.uk/> www.unit3compliance.co.uk | <mailto:[email protected]> [email protected] | +44(0)1274 911747 2 Wellington Business Park, New Lane, Bradford, BD4 8AL Registered in England and Wales # 10574298 From: Brian Kunde <[email protected]> Sent: Monday, June 24, 2024 1:20 PM To: [email protected] Subject: [PSES] HiPot Testing of 3-Phase PSU Question I understand that commercial products are %100 HiPot tested at the factory. Does this rule hold true for 3-phase industrial machinery? Here is why I am asking. I just pre-tested a German build 400-480Vac to 24Vdc power supply (DIN Rail Mount). It passed all the tests, except it failed the Phase-to-PE HiPot test at around 1000V. I tried both AC and DC voltage and tried connecting it from a single phase to PE and tried all phases connected together to PE. I tested a second power supply of the same model and it did the same exact thing. So I am thinking that it is supposed to perform this way. My concern is that in our factory, they will not be able to HiPot the final product when the power supply is installed. I assume the power supply has some kind of built in surge suppression. So how am I to use this PSU in my final product? Thoughts and comments would be appreciated. Best regards to all. The Other Brian _____ 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: 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. 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
