> - Asia site - auditor writes variation notice because hi- > pot test level is too high. Their agency required 2500V, > another wanted 3kV.
> - Asia site - auditor writes variation notice because > product is being hi-potted twice during production > process, and because one test level is a bit higher than > the report. Conventional wisdom is that too high hi-pot test voltage or repeated hi-pot test damages solid insulation. Demonstrates a lack of science and engineering. There is no evidence of this. Damage to solid insulation is due to partial discharge which occurs in small voids in the solid insulation. And, at much higher than 3000 volts. Rich - ---------------------------------------------------------------- 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 Attachments are not permitted but the IEEE PSES Online Communities site at http://product-compliance.oc.ieee.org/ can be used for graphics (in well-used formats), large files, etc. 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: Scott Douglas <[email protected]> Mike Cantwell <[email protected]> For policy questions, send mail to: Jim Bacher: <[email protected]> David Heald: <[email protected]>
