I read in !emc-pstc that Chris Maxwell <chris.maxw...@nettest.com> wrote (in <83d652574e7af740873674f9fc12dbaaf7e...@utexh1w2.gnnettest.com>) about 'Varistor to Ground', on Mon, 22 Apr 2002: >I read your quote below regarding the safety implications of placing >MOVs between AC power and ground: > > "Some ban it already: others will in due course, AFAIK." > > >What about sidactors? (essentially a specialized Silicon Controlled >Rectifier). > >We have used them on Telecom circuits with good success with hipot and >surge testing. They are more reliable than MOV's as they don't degrade >with every activation. > >Are sidactors banned? Will they be banned? If not, they are an >excellent alternative to MOVs. I know of two manufacturers: Teccor and >Raychem. Small quantities of the Raychem parts are available from >Digi-Key (www.digikey.com).
Very hot news! I have just returned from an IEC TC108 MT1 meeting where this subject was discussed, and I asked about devices other than MOVs. It was said that these devices are only just beginning to be discussed by IEC SC37A, but I have no more details at present. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested in professional sound reinforcement and distribution? Then go to http://www.isce.org.uk PLEASE do NOT copy news posts to me by E-MAIL! ------------------------------------------- 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: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Ron Pickard: emc-p...@hypercom.com Dave Heald: davehe...@attbi.com For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://ieeepstc.mindcruiser.com/ Click on "browse" and then "emc-pstc mailing list"
