Actually A14, in addition to redefining class D, it extends the "no limits" clause to all equipment less than 75W, except lighting equipment. ---------------------- Forwarded by Jim Hulbert/MSD/US/PBI on 01/03/2001 04:19 PM --------------------------- (Embedded Jim Hulbert image moved 01/03/2001 03:23 PM to file: (Embedded image moved to file: pic13449.pcx) pic02511.pcx)
To: "Craig Hensley" <hens...@iomega.com> cc: emc-p...@ieee.org Subject: Re: EN61000-3-2 / EN61000-3-3 (Again) (Document link: Jim Hulbert) Depends on the class of your equipment. No limits apply to class D equipment under 75W (reduced to 50W four years after implementation date of the standard). I believe class A, class B, and class C equipment do need to meet their respective limits regardless of power as long as the input current per phase is less than or equal to 16A as described in the standard's scope. Of course A14 to the standard changes the definition of class D. You may have equipment that is class D today but it becomes by default class A equipment under this amendment. "Craig Hensley" <hens...@iomega.com> on 01/03/2001 12:49:32 PM Please respond to "Craig Hensley" <hens...@iomega.com> To: emc-p...@ieee.org cc: "Craig Hensley" <hens...@iomega.com> (bcc: Jim Hulbert/MSD/US/PBI) Subject: EN61000-3-2 / EN61000-3-3 (Again) This is probably a gross over-simplification, but I want to make sure I understand the applicability of the new EN61000-3-2 (harmonic) and EN61000-3-3 (flicker) standards. In reviewing the standards as well as previous communications within this group I have arrived at the following conclusions. EN61000-3-2 - Applies only to products with input power higher than 75W. Per paragraph 7.4 of the standard, "no limits apply for equipment with an active input power up to and including 75W". EN61000-3-3 - Per paragraph 6.1 of the standard, "Tests shall not be made on equipment which is unlikely to produce significant voltage fluctuations or flicker". Per an earlier e-mail from Gert Gremmen "unlikely" means that the equipment has no variations in power supply current, or variations that cause voltage fluctuations below the most stringent level in the standard. In general: - Equipment with a power consumption below 100 VA max is unlikely to create flicker problems, and, - Most equipment under 500VA will not create flicker problems. You could actually do a simple check the 230V mains side to see if the product causes dips or fluctuations. If there are no dips there is no need to measure. If a product does not fall under the applicability of EN61000-3-2 or EN61000-3-3 per the above explanations, what is the consensus regarding referencing these standards on the DoC? Based on some earlier e-mails, it appears that a few of you are going to add these to the DoC. This should take away questions that may arise with DoC's that do not contain these standards. Based on this approach, couldn't you also reference other non-applicable harmonized standards? Recently I have been asked to sign a document from one of our distributors that states all product provided after 01/01/01 will comply with EN61000-3-2 and EN61000-3-3. However, my products fall outside the scope of these standards (per above explanations), so what I am wondering is can I say I comply because I have evaluated the standards and found they are not applicable. I face the same dilemma on the DoC's. Is it reasonable to claim compliance via non-applicability? I apologize for the conversational tone of this e-mail, but I am interested in any other views and opinions. Best Regards for 2001, Craig Hensley Iomega Corp. Roy, UT ------------------------------------------- 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
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