Hello James, the immunity tests in EN 60335-1, 19.11.4 serve a different purpose than the EMC immunity tests required by the EMC directive during normal operation. These tests shall demonstrate that the EUT stays in a safe state, i.e. it is not turned on by EMC impact when electronically turned off or in standby by user interaction, and even more important, stays in a safe state when electronically turned off due to automatic fault detection (e.g. overtemperature). The requirements in 19.11.4 (and Annex R) are equivalent to those in EN 60730-1 for automatic electrical controls.
Kind regards, Bernd Von: James Pawson (U3C) [mailto:ja...@unit3compliance.co.uk] Gesendet: Dienstag, 20. März 2018 10:28 An: EMC-PSTC@LISTSERV.IEEE.ORG Betreff: [PSES] EMC tests called up in Safety standards Hello experts, I note that EN 60335-1 (household and similar appliances) specifically calls up EMC immunity tests in clause 19.11.4 where the controls for the EUT are set in the "off position" and a set of immunity tests are applied. For something that controls a heating element, I can see why this would be a concern. A couple of questions / thoughts: * It sounds like this at least doubles the amount of immunity testing required - one with the EUT "on" and one with it "off". Would that be how you read this? * Are there any other safety standards that explicitly call up EMC tests within them like this one does? This is the first one I've come across where this is the case but I'm not very familiar with safety standards in general. Thanks and all the best, James - ---------------------------------------------------------------- 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 <mailto: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://www.ieee-pses.org/list.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas <mailto:sdoug...@ieee.org> Mike Cantwell <mailto:mcantw...@ieee.org> For policy questions, send mail to: Jim Bacher <mailto:j.bac...@ieee.org> David Heald <mailto:dhe...@gmail.com> ________________________________ WILO SE Nortkirchenstrasse 100, 44263 Dortmund Amtsgericht Dortmund, HRB 21356 www.wilo.com Vorstand/Executive Board: Oliver Hermes (Vorsitzender/Chairman), Carsten Krumm, Georg Weber, Mathias Weyers Aufsichtsratsvorsitzender/Chairman of the Supervisory Board: Prof. Dr. Norbert Wieselhuber Dieses Dokument ist vertraulich zu behandeln. Die Weitergabe sowie Vervielfaeltigung, Verwertung und Mitteilung seines Inhalts ist nur mit unserer ausdruecklichen Genehmigung gestattet. Alle Rechte vorbehalten, insbesondere fuer den Fall der Schutzrechtsanmeldung. This document has to be treated confidentially. Its contents are not to be passed on, duplicated, exploited or disclosed without our expressed permission. All rights reserved, especially the right to apply for protective rights. - ---------------------------------------------------------------- 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://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 <sdoug...@ieee.org> Mike Cantwell <mcantw...@ieee.org> For policy questions, send mail to: Jim Bacher: <j.bac...@ieee.org> David Heald: <dhe...@gmail.com>
