Art, I cannot help with your immediate question regarding a source, but I used this type of wire several years ago and was unable to make a transformer that complied with EN 60335-1 despite the wire being appropriately rated. I would strongly recommend an alternative solution.
Best regards Neil R. Barker CEng MIEE FSEE MIEEE Manager Compliance Engineering e2v technologies (uk) ltd 106 Waterhouse Lane Chelmsford Essex CM1 2QU UK Tel: (+44) 1245 453616 Fax: (+44) 1245 453410 Mob: (+44) 7801 723735 From: Arthur Michael [mailto:[email protected]] Sent: 14 February 2006 14:50 To: [email protected] Subject: Help Needed Sourcing Wire Meeting EN 61558-1 (2005) Annex K Hello All, I have run into a wall and seek your collective guidance. Background: EN 60335-1 references EN 61558-1 (Transformers), which references EN 61558-2-17 (SMPS Transformers) I'm trying to source triple-insulated wire that meets Annex K of EN 61558-1 (2005). Annex K is titled, Insulated winding wires for use as multiple layer insulation". Annex K of EN-61558-1 is similar to Annex U of EN 60950-1 but the requirements are more stringent than specified in EN 61558-1. For those unfamiliar with this type of wire, it is used to reduce the mandated creepage and clearances in Switch Mode Power Supply transformers and yields a much smaller transformer for a given rating. That's its claim to fame. To my knowledge, tri-insulated wire is manufactured by: Furukawa Rubadue * Virgina Insulated Products * * Requires stripping, which the transformer manufacturer is not fond of - they seek wire meeting this requirement - which does not need stripping of insulation. I cannot find evidence that any of them meet the Annex K requirements of EN 61558-1 There must be someone out in this World who manufactures such wire - but I can't find them. Helppppppppppppppppp me - please. Vendors - please contact me directly. ThanX and regards, Art Michael A.E. Michael, Dir. of Engineering PSI 166 Congdon St. East Middletown CT 06457-2107 U.S.A. Phone : (860) 344-1651 Fax : (860) 346-9066 Email : [email protected] Website: http://www.safetylink.com - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. Website: http://www.ieee-pses.org/ To post a message to the list, send your e-mail to [email protected] Instructions: http://listserv.ieee.org/request/user-guide.html 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] All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc
