<4203d61676d0ae468aa5cea90a891c13235...@cof110avexu4.global.avaya.com>, Wagner, John P (John) <[email protected]> inimitably wrote: > There is a manufacturer in the US who makes filters to eliminate low order > harmonic current, particularly the 3rd. The product is made to mitigate > real or imagined harmonic problems, not to meet some harmonic standard. > The > product is called "3rd Out" I think. It is available as a plug-in device > for individual products and also available for installation at a > distribution panel board.
I would want to know a great deal about such a device before I used it. It is possible to design efficient filters, although the parts are costly and large, BUT there are major problems with voltage-raising if the filter is lightly loaded. Maybe the devices you describe have overcome this, but I would take a lot of convincing. Maybe they haven't overcome it, but work on US mains that have very little voltage distortion. Use in Europe (even if the voltage and frequency differences were overcome) could be dangerous, since up to 5% voltage distortion is present almost everywhere. -- Regards, John Woodgate, OOO - Own Opinions Only. Phone +44 (0)1268 747839 Fax +44 (0)1268 777124. http://www.jmwa.demon.co.uk Foxhunters suffer from tallyhosis. PLEASE do not mail copies of newsgroup posts to me. ------------------------------------------- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: [email protected] with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Michael Garretson: [email protected] Dave Heald [email protected] For policy questions, send mail to: Richard Nute: [email protected] Jim Bacher: [email protected] All emc-pstc postings are archived and searchable on the web at: http://www.rcic.com/ click on "Virtual Conference Hall,"
