But when is A14 expected to be entered into the Official Journal? Quoting from the Sep/Oct 2000 issue of Approval Magazine (page 6):
"The mains harmonic standard continues to be a headache for industry, despite the best efforts of the standards bodies. EN61000-3-2 effectively becomes mandatory from 1 January 2001, and although a much clearer, easier to use version has been approved, it is unlikely to appear in the Official Journal before the middle of next year." ===================================================================================== plaw...@west.net (Patrick Lawler) on 12/12/2000 03:07:41 PM Please respond to plaw...@west.net (Patrick Lawler) To: EMC-PSTC <emc-p...@ieee.org> cc: (bcc: Robert E. Heller/US-Corporate/3M/US) Subject: Re: Passive PFC (original post by lfresea...@aol.com) I was getting ahead of myself (and the standard). Yes, there is a transistion period. Apparently, until January 2004 you can choose to use ammendment 14 or not. The CENELEC web site reports: DOR 2000-10-03 DAV 2000-10-19 DOA 2000-12-01 DOP 2001-01-01 DOW 2004-01-01 On Tue, 12 Dec 2000 11:31:39 -0600, "Lesmeister, Glenn" <glenn.lesmeis...@compaq.com> wrote: >...and thus you might not comply. Has the new A14 been given a DOP and DOW? >I haven't seen it yet. Normally, when new requirements are published there >is a DOW for existing requirements. Isn't it typically about 4 years? If >you've been gearing up to meet the existing EN61000-3-2 how could you be >expected to have this rug pulled out from under you on and immediate basis? > > >Regards, > >Glenn Lesmeister >Product Regulatory Compliance > >Compaq Computer Corp. Tel: 281-514-5163 >20555 SH 249, MS60607 Fax: 281-514-8029 >Houston, TX 77070-2698 Pgr: 713-786-4930 >glenn.lesmeis...@compaq.com > >"I am empowered to do what makes sense!" > > -----Original Message----- >From: plaw...@west.net [mailto:plaw...@west.net] >Sent: Tuesday, December 12, 2000 10:58 AM >To: EMC-PSTC >Subject: Re: Passive PFC (original post by lfresea...@aol.com) > > >When systems are tested using these techniques, make sure the latest >version of EN61000-3-2 is used, incorporating Ammendment 14. > >Previously, simple techniques could be used to modify the input >current waveform, and distort it outside the 'special waveform' >envelope shown in figure 1 of the standard. >This enabled you to use the less-stringent Class A limits. > >With the incorporation of Ammendment 14, there is no evaluation of the >input current waveform to determine the test limit. The application >alone will determine the test limit used. > >---- >Patrick Lawler >plaw...@west.net > > >On Tue, 12 Dec 2000 10:03:50 +1100, Jon Keeble ><j.kee...@fairlightesp.com.au> wrote: >>You may be interested in a paper >> >>Power Factor Correction for AC-DC Converters with Cost Effective Inductive >>Filtering >> >>by >> >>W.Wölfle Convertec Ltd., Wexford, IRELAND >>W.G.Hurley National University of Ireland Galway, IRELAND >>S.Arnold Enserb Bordeaux, FRANCE >> >>To quote the conclusion: >> >>This paper presents a new, simple and cost effective solution >>for the power factor correction of the input current of a >>switch mode power supply, which meets the IEC limits on >>harmonic distortion. A sloped air-gap inductor, which adapts >>its inductance values to the input current conditions of the >>power supply, is used to shape the current to comply with the >>limits for harmonic distortions as defined in EN61000-3-2. >> >>It is shown that using a classical inductor design, the filter >>inductor is too bulky, whereas the volume of the sloped air-gap >>choke is as small as the switching transformer of the >>power (e.g.100 kHz) supply. In fact, the volume required is >>not bigger then that required for an active PFC circuit, but at >>a fraction of the cost. >> >>The .pdf is too large to post, but I'll mail a copy to the first ten >>callers ... >> >>Seasonal Greetings >> >>----------------------------- >>Jon Keeble >>Fairlight >>Hardware Engineering Manager >>8977 9931 >>j.kee...@fairlightesp.com.au > > >------------------------------------------- >This message is from the IEEE EMC Society Product Safety >Technical Committee emc-pstc discussion list. > >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: > Jim Bacher: jim_bac...@mail.monarch.com > Michael Garretson: pstc_ad...@garretson.org > >For policy questions, send mail to: > Richard Nute: ri...@ieee.org > > >------------------------------------------- >This message is from the IEEE EMC Society Product Safety >Technical Committee emc-pstc discussion list. > >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: > Jim Bacher: jim_bac...@mail.monarch.com > Michael Garretson: pstc_ad...@garretson.org > >For policy questions, send mail to: > Richard Nute: ri...@ieee.org > > ------------------------------------------- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. 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: Jim Bacher: jim_bac...@mail.monarch.com Michael Garretson: pstc_ad...@garretson.org For policy questions, send mail to: Richard Nute: ri...@ieee.org ------------------------------------------- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. 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: Jim Bacher: jim_bac...@mail.monarch.com Michael Garretson: pstc_ad...@garretson.org For policy questions, send mail to: Richard Nute: ri...@ieee.org
