The customer should also consider that he is not only to meet regulations, but a product with
this large amount of harmonic distortion might actually interfere with other equipment using the zero crossing of the mains, such as solid state relays. These are common found in industrial applications such this suggests. The limits have been established based on real cases, with a margin of course. Using the margin might be costly in some cases. Regards, Ing. Gert Gremmen, BSc [email protected] <mailto:[email protected]> www.cetest.nl Kiotoweg 363 3047 BG Rotterdam T 31(0)104152426 F 31(0)104154953 Before printing, think about the environment. Van: Julian Jones [mailto:[email protected]] Verzonden: Tuesday, October 22, 2013 8:00 PM Aan: [email protected] Onderwerp: [PSES] EN61000-3-2 Clause 4 - and how best to use it We have a product which is failing to meet harmonic limits. It is professional equipment ( in that you can only buy it from them and you need a team to install it ) and is essentially a fan with speed control. Power consumption is from 400 watts up to 1200 watts depending on fan speed. The customer cannot install any active filtering and wants to use the Clause 4 route by stating it does not need to comply because it is professional equipment etc etc My question to the group is, what do labs put in reports in this situation ? Fails EN61000-3-2 or meets by route of Clause 4 ? At minimum load it just passes, but any more than that it is a fail up to 100% fan speed. I accept people may not wish to post replies online, I would be grateful for any input. Rgds Julian Julian Jones Hursley EMC Services Tel: 023 8027 1111 ddi: 023 8024 0851 Mob: 07787 523 607 [email protected] <mailto:[email protected]> Trafalgar House, Trafalgar Close, Chandlers Ford EASTLEIGH, Hampshire, SO53 4BW Company Registration 3301279 - ---------------------------------------------------------------- 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) <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 <[email protected]> Mike Cantwell <[email protected]> For policy questions, send mail to: Jim Bacher <[email protected]> David Heald <[email protected]> - ---------------------------------------------------------------- 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]>
