I would think the device only needs to pass the required surge testing of EN61000-4-5 as well as associated EFT/Burst and Ringwave, if required.
Doug Douglas E Powell http://www.linkedin.com/in/dougp01 ------Original Message------ From: Richard Nute To: Doug Powell To: EMC-PSTC ReplyTo: Richard Nute Subject: Re: [PSES] Why use an MOV? Sent: Dec 15, 2012 5:51 PM Hi Doug: In both of these cases, what would be the energy the MOV would be required to dissipate? Thanks, Rich -----Original Message----- From: doug...@gmail.com Sent: Saturday, December 15, 2012 3:16 PM To: Richard Nute ; EMC-PSTC Subject: Re: [PSES] Why use an MOV? In the case of IEC 61010-1 Ed 3, it is possible to reduce clearance requirements utilizing Annex K. In another case, say you have a brick power supply approve for use in OV Cat II but your application has an extended environmental condition of OV Cat III. In order to use this power supply, you must reduce the Category by one step. MOVs are just one possibility for achieving this. Of course, use of MOVs also has a certain added concerns that must be addressed. Doug Douglas E Powell http://www.linkedin.com/in/dougp01 http://www.linkedin.com/in/dougp01 - ---------------------------------------------------------------- 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 <emc-p...@ieee.org> 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://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 <emcp...@radiusnorth.net> Mike Cantwell <mcantw...@ieee.org> For policy questions, send mail to: Jim Bacher: <j.bac...@ieee.org> David Heald: <dhe...@gmail.com>
