I do not know what the view of an approvals body such as ASTA might be, but I can see no technical reason provided that the insulation requirements between the live parts and the metal pin are met and can be assured. I am sure that the use of a plastic pin is both to simplify the design and to reduce cost, since the plastic is usually moulded integral with the case. Best regards
Neil R. Barker CEng MIET FSEE MIEEE Manager Quality Engineering e2v technologies (uk) ltd 106 Waterhouse Lane Chelmsford Essex CM1 2QU UK Tel: (+44) 1245 453616 Fax: (+44) 1245 453571 Mob: (+44) 7801 723735 P Please consider the environment before printing this email. From: Carpentier Kristiaan [mailto:[email protected]] Sent: 16 February 2007 11:10 To: EMC-PSTC Subject: Class I or II UK Wall plu power supplies Hi group, UK wall plug power supplies have a ground pin to open the slutter of the wall socket outlet. When the design of the power supply does not rely on Protective Earth, then this earth pin can be made of plastic. There is a Class 2 marking on the wall plug adaptor. If the PSU design is the same but there is a metal earth pin that is not connected inside the adaptor, can the Class II marking still be affixed? Vriendelijke groeten, meilleures salutations, mit freundlichen Gruessen, Best regards, Kristiaan Carpentier Regulatory & Approvals Thomson Telecom Belgium Prins Boudewijnlaan 47 B-2650 Edegem - Belgium Tel.: +32 3 443 6407 Fax: +32 3 443 6632 E-mail: <mailto:[email protected]> [email protected] <http://www.spepedtouch.com/> www.speedtouch.com ______________________________________________________________________ This email has been scanned by the MessageLabs Email Security System. For more information please visit http://www.messagelabs.com/email ______________________________________________________________________ - ---------------------------------------------------------------- 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
