RE: PFC or Harmonic Current Limitations outside Europe
Quite right John - thanks for catching the slip. Here's my amended running compilation: - Japan - Has requirements based on the previous rev. of 61000-3-2 (still has the special waveshape in it) that appear to be guidelines only (ie voluntary) unless you are a member of JEITA. - China - standard is GB17625.1, presently aligned to IEC61000-3-2:1995, amendment 1 (reflecting EN61000-3-2:A14) is in the works. - USA - IEEE 519 covers distortion, which is related to harmonic content. It is a utility standard that doesn't seem likely to get applied to product approvals. I was also told that it seems exceedingly unlikely...that the present edition of IEC 61000-3-2 will get adopted in the US. - Australia / New Zealand - I'm told the current edition of IEC 61000-3-2 is being studied, but the level of controversy over it makes adoption unlikely. - Korea - moving in this direction For the forum, here's my amended running compilation. If anyone has anything more to add, I'll keep this going for a while. Jim Eichner, P.Eng. Manager, Engineering Services Xantrex Technology Inc. phone: (604) 422-2546 fax: (604) 420-1591 e-mail: jim.eich...@xantrex.com web: www.xantrex.com Confidentiality Notice: This email message, including any attachments, is for the sole use of the intended recipient(s) and may contain confidential and privileged information. Any unauthorized review, use, disclosure or distribution is prohibited. If you are not the intended recipient, please contact the sender by reply e-mail and destroy all copies of the original message. -Original Message- From: John Woodgate [mailto:j...@jmwa.demon.co.uk] Sent: Friday, September 06, 2002 6:41 PM To: emc-p...@majordomo.ieee.org Subject: Re: PFC or Harmonic Current Limitations outside Europe I read in !emc-pstc that Jim Eichner jim.eich...@xantrex.com wrote (in 67C475A5ECE7D4118AEC0002B325CAB60176826D@BCMAIL1) about 'PFC or Harmonic Current Limitations outside Europe' on Fri, 6 Sep 2002: - China - standard is GB17625.1, presently aligned to IEC61000-3-2:1995, amendment 1 (EN60950:A14) is in the works. No, that 'amendment 1' is EN61000-3-2:A14. EN 60950 has nothing to do with it. -- 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 --- 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
RE: PFC or Harmonic Current Limitations outside Europe
Tom, As I understand it, if you are a member of JEITA then it is a requirement. Regards, Josh Josh Wiseman EMC/Product Safety (714) 368-2737 [mailto:jwise...@printronix.com] -Original Message- From: T.Sato [mailto:vef00...@nifty.ne.jp] Sent: Friday, August 30, 2002 10:06 PM To: emc-p...@majordomo.ieee.org Subject: RE: PFC or Harmonic Current Limitations outside Europe On Fri, 30 Aug 2002 12:36:50 -0700, Jim Eichner jim.eich...@xantrex.com wrote: Joshua: Re Japan, I didn't have much luck on the JEITA website. Can you give me a specific reference (standard name/number, URL, etc.)? Also, is there a list of what types of products this requirement applies to? http://home.jeita.or.jp/eps/harmonics/guideline/data/guideline_eng.pdf It is a guideline issued by Ministry of Economy, Trade and Industry, and I think it can be applied to almost any products if you want. Regards, Tom -- Tomonori Sato vef00...@nifty.ne.jp URL: http://member.nifty.ne.jp/tsato/ --- 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
RE: PFC or Harmonic Current Limitations outside Europe
On Fri, 30 Aug 2002 12:36:50 -0700, Jim Eichner jim.eich...@xantrex.com wrote: Joshua: Re Japan, I didn't have much luck on the JEITA website. Can you give me a specific reference (standard name/number, URL, etc.)? Also, is there a list of what types of products this requirement applies to? http://home.jeita.or.jp/eps/harmonics/guideline/data/guideline_eng.pdf It is a guideline issued by Ministry of Economy, Trade and Industry, and I think it can be applied to almost any products if you want. Regards, Tom -- Tomonori Sato vef00...@nifty.ne.jp URL: http://member.nifty.ne.jp/tsato/ --- 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
Re: PFC or Harmonic Current Limitations outside Europe
I read in !emc-pstc that Wagner, John P (John) johnwag...@avaya.com wrote (in 4203D61676D0AE468AA5CEA90A891C13012FAB6A@cof110avexu4.global. avaya.com) about 'PFC or Harmonic Current Limitations outside Europe' on Fri, 30 Aug 2002: IEEE 519 is a Recommended Practice. It suggests voltage distortion limits at the Point of Common Coupling based upon the customer load vs short circuit current capabillity. It has nothing to do with paroduct harmonics. Well, that last sentence is a bit misleading. IEEE 519 certainly doesn't apply to individual products (unless someone had a single high-power product as his whole load), but the OP asks about 'PFC or Harmonic Current Limitations outside Europe', not specifically about limits for products. Clearly, the harmonic currents produced by the products on a site are responsible for *part* of the voltage distortion measured at the site's PCC, the rest being due to all the other non-linear loads on the system. It is not a regulation, but electric utilities may adopt it as a company requirement for customers to meet. Yes, a 'de facto standard' or 'contractually enforced requirement'. -- 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
Re: PFC or Harmonic Current Limitations outside Europe
I read in !emc-pstc that Jim Eichner jim.eich...@xantrex.com wrote (in 67C475A5ECE7D4118AEC0002B325CAB60176820C@BCMAIL1) about 'PFC or Harmonic Current Limitations outside Europe' on Fri, 30 Aug 2002: Re the US: Is IEEE519 given force in any way? Is there any agency, body, or utility that is requiring IEEE519 compliance? Re Japan: Do you know the name/number of the trial standard and where I can find a list of what types of products it applies to? Sorry, I don't know answers to either of those questions. I understand that some Canadian electricity suppliers (Hydro Quebec?) ARE applying IEEE 519 to selected customers. -- 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
RE: PFC or Harmonic Current Limitations outside Europe
IEEE 519 is a Recommended Practice. It suggests voltage distortion limits at the Point of Common Coupling based upon the customer load vs short circuit current capabillity. It has nothing to do with paroduct harmonics. It is not a regulation, but electric utilities may adopt it as a company requirement for customers to meet. John P. Wagner Regulatory Compliance Mandatory Standards AVAYA Strategic Standards. 1300 W. 120th Ave, Room B3-D16 Westminster, CO 80234-2726 Phone/Fax: (303) 538-4241 johnwag...@avaya.com -- From: Jim Eichner[SMTP:jim.eich...@xantrex.com] Reply To: Jim Eichner Sent: Friday, August 30, 2002 1:39 PM To: 'EMC-PSTC - forum' Subject: RE: PFC or Harmonic Current Limitations outside Europe John: Re the US: Is IEEE519 given force in any way? Is there any agency, body, or utility that is requiring IEEE519 compliance? Re Japan: Do you know the name/number of the trial standard and where I can find a list of what types of products it applies to? Thanks, Jim Eichner, P.Eng. Manager, Engineering Services Xantrex Technology Inc. phone: (604) 422-2546 fax: (604) 420-1591 e-mail: jim.eich...@xantrex.com web: www.xantrex.com Confidentiality Notice: This email message, including any attachments, is for the sole use of the intended recipient(s) and may contain confidential and privileged information. Any unauthorized review, use, disclosure or distribution is prohibited. If you are not the intended recipient, please contact the sender by reply e-mail and destroy all copies of the original message. -Original Message- From: John Woodgate [mailto:j...@jmwa.demon.co.uk] Sent: Tuesday, August 27, 2002 11:54 PM To: emc-p...@majordomo.ieee.org Subject: Re: PFC or Harmonic Current Limitations outside Europe I read in !emc-pstc that Jim Eichner jim.eich...@xantrex.com wrote (in 67C475A5ECE7D4118AEC0002B325CAB6017681D7@BCMAIL1) about 'PFC or Harmonic Current Limitations outside Europe' on Mon, 26 Aug 2002: Can anyone provide any information on the requirements for (or lack of) PFC or harmonic current limitation now or in the future, in the following areas: 1. Japan Japan has had a 'trial standard' for some years. It is not the same as IEC/EN 61000-3-2, but is based on it. It does not apply to everything, as the EN does. 2. North America (I think I've heard rumours) There is already IEEE 519. I think it is exceedingly unlikely that USA will adopt the present edition of IEC 61000-3-2, particularly since it doesn't claim to apply to 120V 60 Hz systems. 3. Australia / New Zealand I understand that the current edition of IEC 61000-3-2 is being studied, but the level of controversy over it makes adoption unlikely. -- 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 --- 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
RE: PFC or Harmonic Current Limitations outside Europe
John: Re the US: Is IEEE519 given force in any way? Is there any agency, body, or utility that is requiring IEEE519 compliance? Re Japan: Do you know the name/number of the trial standard and where I can find a list of what types of products it applies to? Thanks, Jim Eichner, P.Eng. Manager, Engineering Services Xantrex Technology Inc. phone: (604) 422-2546 fax: (604) 420-1591 e-mail: jim.eich...@xantrex.com web: www.xantrex.com Confidentiality Notice: This email message, including any attachments, is for the sole use of the intended recipient(s) and may contain confidential and privileged information. Any unauthorized review, use, disclosure or distribution is prohibited. If you are not the intended recipient, please contact the sender by reply e-mail and destroy all copies of the original message. -Original Message- From: John Woodgate [mailto:j...@jmwa.demon.co.uk] Sent: Tuesday, August 27, 2002 11:54 PM To: emc-p...@majordomo.ieee.org Subject: Re: PFC or Harmonic Current Limitations outside Europe I read in !emc-pstc that Jim Eichner jim.eich...@xantrex.com wrote (in 67C475A5ECE7D4118AEC0002B325CAB6017681D7@BCMAIL1) about 'PFC or Harmonic Current Limitations outside Europe' on Mon, 26 Aug 2002: Can anyone provide any information on the requirements for (or lack of) PFC or harmonic current limitation now or in the future, in the following areas: 1. Japan Japan has had a 'trial standard' for some years. It is not the same as IEC/EN 61000-3-2, but is based on it. It does not apply to everything, as the EN does. 2. North America (I think I've heard rumours) There is already IEEE 519. I think it is exceedingly unlikely that USA will adopt the present edition of IEC 61000-3-2, particularly since it doesn't claim to apply to 120V 60 Hz systems. 3. Australia / New Zealand I understand that the current edition of IEC 61000-3-2 is being studied, but the level of controversy over it makes adoption unlikely. -- 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 --- 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
RE: PFC or Harmonic Current Limitations outside Europe
Joshua: Re Japan, I didn't have much luck on the JEITA website. Can you give me a specific reference (standard name/number, URL, etc.)? Also, is there a list of what types of products this requirement applies to? Thanks, Jim Eichner, P.Eng. Manager, Engineering Services Xantrex Technology Inc. phone: (604) 422-2546 fax: (604) 420-1591 e-mail: jim.eich...@xantrex.com web: www.xantrex.com Confidentiality Notice: This email message, including any attachments, is for the sole use of the intended recipient(s) and may contain confidential and privileged information. Any unauthorized review, use, disclosure or distribution is prohibited. If you are not the intended recipient, please contact the sender by reply e-mail and destroy all copies of the original message. -Original Message- From: Joshua Wiseman [mailto:jwise...@printronix.com] Sent: Wednesday, August 28, 2002 8:34 AM To: 'Jim Eichner'; 'EMC-PSTC - forum' Subject: RE: PFC or Harmonic Current Limitations outside Europe Jim, When China converted to the CCC approval scheme they adopted the Chinese version of EN 61000-3-2. Japan has a requirement under JEITA to test harmonics at 120V while using an impedance in line. I have heard that Australia and Korea are also moving in this direction. Taiwan follows the US for the most part and I have not heard anything in this arena. I am curious to hear the responses you get on this one. Good luck. Regards, Josh Josh Wiseman EMC/Product Safety (714) 368-2737 [ mailto:jwise...@printronix.com mailto:jwise...@printronix.com ] -Original Message- From: Jim Eichner [ mailto:jim.eich...@xantrex.com mailto:jim.eich...@xantrex.com ] Sent: Monday, August 26, 2002 12:33 PM To: 'EMC-PSTC - forum' Subject: PFC or Harmonic Current Limitations outside Europe Can anyone provide any information on the requirements for (or lack of) PFC or harmonic current limitation now or in the future, in the following areas: 1. Japan 2. North America (I think I've heard rumours) 3. Australia / New Zealand 4. Any other location you are aware of where it definitely IS a requirement Thanks as always for the group's input. Regards, Jim Eichner, P.Eng. Manager, Engineering Services Xantrex Technology Inc. Mobile Power web: www.xantrex.com http://www.xantrex.com http://www.xantrex.com Any opinions expressed are those of my invisible friend, who really exists. Honest. Confidentiality Notice: This email message, including any attachments, is for the sole use of the intended recipient(s) and may contain confidential and privileged information. Any unauthorized review, use, disclosure or distribution is prohibited. If you are not the intended recipient, please contact the sender by reply e-mail and destroy all copies of the original message. --- 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/ 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/ http://ieeepstc.mindcruiser.com/ Click on browse and then emc-pstc mailing list
RE: PFC or Harmonic Current Limitations outside Europe
Jim, When China converted to the CCC approval scheme they adopted the Chinese version of EN 61000-3-2. Japan has a requirement under JEITA to test harmonics at 120V while using an impedance in line. I have heard that Australia and Korea are also moving in this direction. Taiwan follows the US for the most part and I have not heard anything in this arena. I am curious to hear the responses you get on this one. Good luck. Regards, Josh Josh Wiseman EMC/Product Safety (714) 368-2737 [mailto:jwise...@printronix.com] -Original Message- From: Jim Eichner [mailto:jim.eich...@xantrex.com] Sent: Monday, August 26, 2002 12:33 PM To: 'EMC-PSTC - forum' Subject: PFC or Harmonic Current Limitations outside Europe Can anyone provide any information on the requirements for (or lack of) PFC or harmonic current limitation now or in the future, in the following areas: 1. Japan 2. North America (I think I've heard rumours) 3. Australia / New Zealand 4. Any other location you are aware of where it definitely IS a requirement Thanks as always for the group's input. Regards, Jim Eichner, P.Eng. Manager, Engineering Services Xantrex Technology Inc. Mobile Power web: www.xantrex.com http://www.xantrex.com Any opinions expressed are those of my invisible friend, who really exists. Honest. Confidentiality Notice: This email message, including any attachments, is for the sole use of the intended recipient(s) and may contain confidential and privileged information. Any unauthorized review, use, disclosure or distribution is prohibited. If you are not the intended recipient, please contact the sender by reply e-mail and destroy all copies of the original message. --- 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
Re: PFC or Harmonic Current Limitations outside Europe
I read in !emc-pstc that Jim Eichner jim.eich...@xantrex.com wrote (in 67C475A5ECE7D4118AEC0002B325CAB6017681D7@BCMAIL1) about 'PFC or Harmonic Current Limitations outside Europe' on Mon, 26 Aug 2002: Can anyone provide any information on the requirements for (or lack of) PFC or harmonic current limitation now or in the future, in the following areas: 1. Japan Japan has had a 'trial standard' for some years. It is not the same as IEC/EN 61000-3-2, but is based on it. It does not apply to everything, as the EN does. 2. North America (I think I've heard rumours) There is already IEEE 519. I think it is exceedingly unlikely that USA will adopt the present edition of IEC 61000-3-2, particularly since it doesn't claim to apply to 120V 60 Hz systems. 3. Australia / New Zealand I understand that the current edition of IEC 61000-3-2 is being studied, but the level of controversy over it makes adoption unlikely. -- 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
PFC or Harmonic Current Limitations outside Europe
Can anyone provide any information on the requirements for (or lack of) PFC or harmonic current limitation now or in the future, in the following areas: 1. Japan 2. North America (I think I've heard rumours) 3. Australia / New Zealand 4. Any other location you are aware of where it definitely IS a requirement Thanks as always for the group's input. Regards, Jim Eichner, P.Eng. Manager, Engineering Services Xantrex Technology Inc. Mobile Power web: www.xantrex.com http://www.xantrex.com Any opinions expressed are those of my invisible friend, who really exists. Honest. Confidentiality Notice: This email message, including any attachments, is for the sole use of the intended recipient(s) and may contain confidential and privileged information. Any unauthorized review, use, disclosure or distribution is prohibited. If you are not the intended recipient, please contact the sender by reply e-mail and destroy all copies of the original message. --- 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
Re: PC power supply with PFC
nebbjkpamlaglbmfcdnnielhceaa.jo...@medson.com, Jon Griver jo...@medson.com inimitably wrote: To the best of my knowledge, EU regulations do not require power factor correction. What is required under the EMC directive is compliance with EN61000-3-2, the standard for limitation of harmonic current emissions. There is, of course, an indirect relationship between power factor and harmonics, but the EU requirement concerns harmonics, not power factor. What you say is correct as far as it goes, but it is difficult to meet the harmonic limits without introducing active compensation, which is nowadays called 'power factor correction'. This terminology comes for the extension of the concept of power factor to the case of a non-linear load, where the definition: power factor = true power/(r.m.s. volts x r.m.s. amps) still applies. Power factor is then divided into: - displacement power factor, due to V and I not being exactly in-phase, and - distortion power factor, due to (in general) the current having harmonic components that are not present in the voltage, and/or vice versa. -- Regards, John Woodgate, OOO - Own Opinions Only. Phone +44 (0)1268 747839 Fax +44 (0)1268 777124. http://www.jmwa.demon.co.uk Why not call a vertically- applied manulo-pedally-operated quasi-planar chernozem-penetrating and excavating implement a SPADE? --- 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: Michael Garretson:pstc_ad...@garretson.org Dave Healddavehe...@mediaone.net 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://www.rcic.com/ click on Virtual Conference Hall,
RE: PC power supply with PFC
Peter, To the best of my knowledge, EU regulations do not require power factor correction. What is required under the EMC directive is compliance with EN61000-3-2, the standard for limitation of harmonic current emissions. There is, of course, an indirect relationship between power factor and harmonics, but the EU requirement concerns harmonics, not power factor. Best Wishes, Jon Griver Medson Ltd. Dear Colleagues, I appreciate if you could help me with my problem please. We use PC power supply in our control machine for feeding our motherboard. The end product is intended for EU. I am unable to locate a PC power supply with PFC and all the vendors that I have approached say to me it is not needed. My question in particular to those of you who work in PC industry is what is the situation with PC power supplies as far as PFC is concerned? Are there are PC power supply with PFC around? Many thanks Peter --- 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: Michael Garretson:pstc_ad...@garretson.org Dave Healddavehe...@mediaone.net 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://www.rcic.com/ click on Virtual Conference Hall,
PC power supply with PFC
Dear Colleagues, I appreciate if you could help me with my problem please. We use PC power supply in our control machine for feeding our motherboard. The end product is intended for EU. I am unable to locate a PC power supply with PFC and all the vendors that I have approached say to me it is not needed. My question in particular to those of you who work in PC industry is what is the situation with PC power supplies as far as PFC is concerned? Are there are PC power supply with PFC around? Many thanks Peter --- 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: Michael Garretson:pstc_ad...@garretson.org Dave Healddavehe...@mediaone.net 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://www.rcic.com/ click on Virtual Conference Hall,
Re: PFC filter
4203d61676d0ae468aa5cea90a891c13235...@cof110avexu4.global.avaya.com, Wagner, John P (John) johnwag...@avaya.com 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: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Michael Garretson:pstc_ad...@garretson.org Dave Healddavehe...@mediaone.net 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://www.rcic.com/ click on Virtual Conference Hall,
RE: PFC filter
Possible Conflict of Interest Alert: I am employed by Taiyo Yuden. This issue is directely addressed in this article on ECN: http://www.ecnmag.com/ecnmag/issues/2001/03012001/ec13pss102_.asp R/S, Brian O'Connell Taiyo Yuden (USA), Inc. -Original Message- From: John Woodgate [mailto:j...@jmwa.demon.co.uk] Sent: Thursday, March 15, 2001 12:19 PM To: emc-p...@majordomo.ieee.org Subject: Re: PFC filter ad.82daed6.27e25...@aol.com, peterh...@aol.com inimitably wrote: I have been told by a customer that there are PFC filter available commercially off the shelf just like the EMI filter that I can buy and put it in front of my power supply and the PFC filter will cure most of the harmonic problems. Is this ture? If so can anyone let me have some manufacturer name or web address for these filters please? It is substantially not true, in that no such device will, for example, eliminate even the low-order harmonic currents of an SMPS. If you had something that produced only, or mainly, one specific harmonic, then a filter would be practicable. -- Regards, John Woodgate, OOO - Own Opinions Only. Phone +44 (0)1268 747839 --- 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: Michael Garretson:pstc_ad...@garretson.org Dave Healddavehe...@mediaone.net 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://www.rcic.com/ click on Virtual Conference Hall,
RE: PFC filter
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. John P. Wagner AVAYA Communication 1300 W. 120th Ave, Room B3-D16 Phone/Fax: (303) 538-4241 johnwag...@avaya.com -- From: John Woodgate[SMTP:j...@jmwa.demon.co.uk] Reply To: John Woodgate Sent: Thursday, March 15, 2001 1:19 PM To: emc-p...@majordomo.ieee.org Subject: Re: PFC filter ad.82daed6.27e25...@aol.com, peterh...@aol.com inimitably wrote: I have been told by a customer that there are PFC filter available commercially off the shelf just like the EMI filter that I can buy and put it in front of my power supply and the PFC filter will cure most of the harmonic problems. Is this ture? If so can anyone let me have some manufacturer name or web address for these filters please? It is substantially not true, in that no such device will, for example, eliminate even the low-order harmonic currents of an SMPS. If you had something that produced only, or mainly, one specific harmonic, then a filter would be practicable. -- 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: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Michael Garretson:pstc_ad...@garretson.org Dave Healddavehe...@mediaone.net 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://www.rcic.com/ click on Virtual Conference Hall,
Re: PFC filter
ad.82daed6.27e25...@aol.com, peterh...@aol.com inimitably wrote: I have been told by a customer that there are PFC filter available commercially off the shelf just like the EMI filter that I can buy and put it in front of my power supply and the PFC filter will cure most of the harmonic problems. Is this ture? If so can anyone let me have some manufacturer name or web address for these filters please? It is substantially not true, in that no such device will, for example, eliminate even the low-order harmonic currents of an SMPS. If you had something that produced only, or mainly, one specific harmonic, then a filter would be practicable. -- 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: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Michael Garretson:pstc_ad...@garretson.org Dave Healddavehe...@mediaone.net 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://www.rcic.com/ click on Virtual Conference Hall,
RE: PFC filter
Hi Peter, Try Ro Associates Inc. http://www.roassoc.com or Vicor http://www.vicr.com or Motorola Regards, Carmen, Leitch -Original Message- From: peterh...@aol.com [SMTP:peterh...@aol.com] Sent: Thursday, March 15, 2001 12:06 PM To: emc-p...@majordomo.ieee.org Subject: PFC filter Hello All, I have been told by a customer that there are PFC filter available commercially off the shelf just like the EMI filter that I can buy and put it in front of my power supply and the PFC filter will cure most of the harmonic problems. Is this ture? If so can anyone let me have some manufacturer name or web address for these filters please? Thanks Peter --- 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: Michael Garretson:pstc_ad...@garretson.org Dave Healddavehe...@mediaone.net 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://www.rcic.com/ click on Virtual Conference Hall, --- 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: Michael Garretson:pstc_ad...@garretson.org Dave Healddavehe...@mediaone.net 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://www.rcic.com/ click on Virtual Conference Hall,
Re: PFC filter
If it is passive check its effect on power factor. I saw one yesterday that reduced power factor to - 0.33. on 3/15/01 11:05 AM, peterh...@aol.com at peterh...@aol.com wrote: Hello All, I have been told by a customer that there are PFC filter available commercially off the shelf just like the EMI filter that I can buy and put it in front of my power supply and the PFC filter will cure most of the harmonic problems. Is this ture? If so can anyone let me have some manufacturer name or web address for these filters please? Thanks Peter --- 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: Michael Garretson:pstc_ad...@garretson.org Dave Healddavehe...@mediaone.net 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://www.rcic.com/ click on Virtual Conference Hall, --- 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: Michael Garretson:pstc_ad...@garretson.org Dave Healddavehe...@mediaone.net 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://www.rcic.com/ click on Virtual Conference Hall,
PFC filter
Hello All, I have been told by a customer that there are PFC filter available commercially off the shelf just like the EMI filter that I can buy and put it in front of my power supply and the PFC filter will cure most of the harmonic problems. Is this ture? If so can anyone let me have some manufacturer name or web address for these filters please? Thanks Peter --- 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: Michael Garretson:pstc_ad...@garretson.org Dave Healddavehe...@mediaone.net 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://www.rcic.com/ click on Virtual Conference Hall,
RE: PFC
Don't forget that 61000-3-2 has been amended with A14, which gives you the option of avoiding the special wave shape criteria and classifying most items (excepting PCs and televisions) as Class A. Paul O'Shaughnessy Affymetrix, Inc. -Original Message- From: Steve Austin [mailto:aus...@cassindustries.com] Sent: Tuesday, February 20, 2001 5:34 AM To: emc-p...@majordomo.ieee.org Subject: PFC Jon, There is no specific requirement for power factor correction as far as I know. The Harmonics Emissions Standard BS EN 61000-3-2 1995 became mandatory 01/01/2001, this sets limits for the harmonic disturbance permitted on the mains - so it adds up to the same thing. . It applies to all equipment having a mains input power consumption over 75 watts. Your type of equipment must meet limits defined as being Class A or Class D. Units fall within Class A unless they have a wave shape lying within a special wave shape, in which case they are Class D. Class D limits are more onerous. Computers, monitors and televisions must meet Class D limits, irrespective of wave shape.. You need a copy of the standard for the limit tables and the special wave shape. Regards Steve Austin aus...@cassindustries.com mailto:aus...@cassindustries.com - Original Message - From: Jon Keeble j.kee...@fairlightesp.com.au mailto:j.kee...@fairlightesp.com.au To: emc-p...@majordomo.ieee.org mailto:emc-p...@majordomo.ieee.org Sent: Monday, February 19, 2001 11:24 PM Subject: PFC on 150w mains to DC switcher I have selecting a 150w universal input (110-240 VAC nom) four rail switcher for use in a product (digital audio workstation) to be shipped to USA, Japan, Europe etc. The supply has a CE mark. I notice, however, that there is no PFC stage, and no mention of PFC in the supply data sheet. I thought that PFC was required in Europe - could someone please confirm / deny this? Thanks Jon Keeble --- Hardware Engineering Manager FairlightESP Pty Ltd Phone +61 2 8977 9931 jkee...@alpha.net.au mailto:jkee...@alpha.net.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
RE: PFC
Steve, Your comments regarding power factor correction are on target. You are correct about the standard becoming effective the beginning of this year. Don't miss the advantage of A14 which is also now in effect. It is my understanding that Class D applies to computers, TVs, and monitors; other equipment considered commercial and industrial equipment is Class A irrespective of the waveform. This is why so many people were eager to see A14 implemented as soon as possible. Best regards, Don Umbdenstock Sensormatic -- From: Steve Austin[SMTP:aus...@cassindustries.com] Reply To: Steve Austin Sent: Tuesday, February 20, 2001 5:34 AM To: emc-p...@majordomo.ieee.org Subject: PFC Jon, There is no specific requirement for power factor correction as far as I know. The Harmonics Emissions Standard BS EN 61000-3-2 1995 became mandatory 01/01/2001, this sets limits for the harmonic disturbance permitted on the mains - so it adds up to the same thing. . It applies to all equipment having a mains input power consumption over 75 watts. Your type of equipment must meet limits defined as being Class A or Class D. Units fall within Class A unless they have a wave shape lying within a special wave shape, in which case they are Class D. Class D limits are more onerous. Computers, monitors and televisions must meet Class D limits, irrespective of wave shape.. You need a copy of the standard for the limit tables and the special wave shape. Regards Steve Austin aus...@cassindustries.com - Original Message - From: Jon Keeble j.kee...@fairlightesp.com.au To: emc-p...@majordomo.ieee.org Sent: Monday, February 19, 2001 11:24 PM Subject: PFC on 150w mains to DC switcher I have selecting a 150w universal input (110-240 VAC nom) four rail switcher for use in a product (digital audio workstation) to be shipped to USA, Japan, Europe etc. The supply has a CE mark. I notice, however, that there is no PFC stage, and no mention of PFC in the supply data sheet. I thought that PFC was required in Europe - could someone please confirm / deny this? Thanks Jon Keeble --- Hardware Engineering Manager FairlightESP Pty Ltd Phone +61 2 8977 9931 jkee...@alpha.net.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
PFC
Jon, There is no specific requirement for power factor correction as far as I know. The Harmonics Emissions Standard BS EN 61000-3-2 1995 became mandatory 01/01/2001, this sets limits for the harmonic disturbance permitted on the mains - so it adds up to the same thing. . It applies to all equipment having a mains input power consumption over 75 watts. Your type of equipment must meet limits defined as being Class A or Class D. Units fall within Class A unless they have a wave shape lying within a special wave shape, in which case they are Class D. Class D limits are more onerous. Computers, monitors and televisions must meet Class D limits, irrespective of wave shape.. You need a copy of the standard for the limit tables and the special wave shape. Regards Steve Austin aus...@cassindustries.com - Original Message - From: Jon Keeble j.kee...@fairlightesp.com.au To: emc-p...@majordomo.ieee.org Sent: Monday, February 19, 2001 11:24 PM Subject: PFC on 150w mains to DC switcher I have selecting a 150w universal input (110-240 VAC nom) four rail switcher for use in a product (digital audio workstation) to be shipped to USA, Japan, Europe etc. The supply has a CE mark. I notice, however, that there is no PFC stage, and no mention of PFC in the supply data sheet. I thought that PFC was required in Europe - could someone please confirm / deny this? Thanks Jon Keeble --- Hardware Engineering Manager FairlightESP Pty Ltd Phone +61 2 8977 9931 jkee...@alpha.net.au
PFC on 150w mains to DC switcher
I have selecting a 150w universal input (110-240 VAC nom) four rail switcher for use in a product (digital audio workstation) to be shipped to USA, Japan, Europe etc. The supply has a CE mark. I notice, however, that there is no PFC stage, and no mention of PFC in the supply data sheet. I thought that PFC was required in Europe - could someone please confirm / deny this? Thanks Jon Keeble --- Hardware Engineering Manager FairlightESP Pty Ltd Phone +61 2 8977 9931 jkee...@alpha.net.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
Re: Passive PFC (original post by lfresea...@aol.com)
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, MS60607Fax: 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
RE: Passive PFC (original post by lfresea...@aol.com)
...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
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
Passive PFC (original post by lfresea...@aol.com)
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 _ The bounds of Time, Space or Mechanics should never stand in the way of a perfectly good idea... --- 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
PFC..
Hello All, I might be behind the 8-ball on this one... can anyone tell me if Europe is imposing / enforcing PFC requirements for residential products using unregulated linear supplies (wall warts) or switch mode supplies as of 01/2001 or any time soon ? If yes, please identify the applicable std(s). Thanks Once Again, George.
RE: PC Power Supply w/ PFC
John, Try Nemic Lambda, Israel. I am sure they or one of their subsidiary cmpanies around the world can help you out. If you need specific names of people, let me know. John, When you find one, post the vendor here on the list. -we looked for one also, but with ATX wiring, and could not find one that had international compliance. The vendor is Sunpower model SAP 6300P. It is CE marked and specifically marked with 'passes harmonics' and standard, but there is no international compliance markings (or UL). The vendor is aware of the harmonics issue. I don't have a model number for the straight pc version supply. I have tested this supply and I can tell you it is much cleaner than the non-pfc counterpart. Since I had to probe this supply with thermocouples for the heating test, I examined the innards and saw that the PFC circuitry is actually a module and is more of an optional upgrade. The case of the supply was not intended for this upgrade, but the circuit board of the supply did have a connector where the PFC module wiring was connected. The mounting of the module was a bit ad hoc. Interestingly, the vendor offered to upgrade the other supplies we had on hand in the lab. Kyle -Original Message- From: John Radomski [SMTP:john_radom...@inter-tel.com] Sent: Tuesday, August 17, 1999 12:34 PM To: emc-p...@majordomo.ieee.org Subject:PC Power Supply w/ PFC We are looking for a supplier of 300 Watt PS2, PC power supplies that have PFC (Power Correction Factor). Here is the spec: It must comply with: EN 60950 (safety approval required), EN 50082-1, EN 61000-3-2/3, CISPR 22 (or EN 55022). REQUIRED RATED INPUT: 220-240VAC, 50-60Hz, 3.5A (auto ranging power supplies with input ratings from 100VAC, are accepted) OUTPUT: +5VDC 30A; -5VDC 0.5A; +12VDC 12A; -12VDC 0.5A John Radomski Compliance Engineer Inter-Tel Integrated Systems, Chandler, Arizona, USA john_radom...@inter-tel.com - This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to majord...@ieee.org with the single line: unsubscribe emc-pstc (without the quotes). For help, send mail to ed.pr...@cubic.com, jim_bac...@monarch.com, ri...@sdd.hp.com, or roger.volgst...@compaq.com (the list administrators). - This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to majord...@ieee.org with the single line: unsubscribe emc-pstc (without the quotes). For help, send mail to ed.pr...@cubic.com, jim_bac...@monarch.com, ri...@sdd.hp.com, or roger.volgst...@compaq.com (the list administrators). PETER S. MERGUERIAN MANAGING DIRECTOR PRODUCT TESTING DIVISION I.T.L. (PRODUCT TESTING) LTD. HACHAROSHET 26, P.O.B. 211 OR YEHUDA 60251, ISRAEL TEL: 972-3-5339022 FAX: 972-3-5339019 E-MAIL: pe...@itl.co.il Visit our Website: http://www.itl.co.il - This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to majord...@ieee.org with the single line: unsubscribe emc-pstc (without the quotes). For help, send mail to ed.pr...@cubic.com, jim_bac...@monarch.com, ri...@sdd.hp.com, or roger.volgst...@compaq.com (the list administrators).
FW: PC Power Supply w/ PFC
Apparently these power supplies are hard to find. I may be slightly off the track here but we designed some a couple of years ago (up to 1000 Watts) using Microlinear Power Factor Regulator Chip ML 4812. It featured a boost buck configuration. We got efficiencies of up to 88 % using powdered iron (not ferrite chokes) material (we had 5% loss in boost and 5% lost in buck). The boost segment corrects the power factor in that it forces the ac line current to track the supply voltage. The buck section is your normal regulator. Our power factor was almost 1 and THD was down to less than 2%. But, they were mainly intended for bulk fluorescent lighting application where the PFC/THD requirements are very stringent. In the lighting industry you couldn't sell something with a THD of say 90% and a Power Factor of 0.3 (I mean the plain Rectifier/ Electrolytic Capacitor/ Switching regulator types). And we did not have to do any fancy design, just followed the Application Note at the back of the Catalogue. Thermals were a bit of a problem though. Microlinear have (and this goes back to 1992) some prototyping kits too. Regards Arun Kaore EMC Engineer ADI Limited Systems Group Test Evaluation Centre Forrester Road, St Marys NSW 2760 P O Box: 315, St Marys NSW 1790 Tel: 61 2 9673 8375 Fax: 61 2 9673 8321 Email: kao...@sg.adi-limited.com.au mailto:kao...@sg.adi-limited.com.au -Original Message- From: John Radomski [SMTP:john_radom...@inter-tel.com] mailto:[SMTP:john_radom...@inter-tel.com] Sent: Tuesday, August 17, 1999 12:34 PM To: emc-p...@majordomo.ieee.org mailto:emc-p...@majordomo.ieee.org Subject:PC Power Supply w/ PFC We are looking for a supplier of 300 Watt PS2, PC power supplies that have PFC (Power Correction Factor). Here is the spec: It must comply with: EN 60950 (safety approval required), EN 50082-1, EN 61000-3-2/3, CISPR 22 (or EN 55022). REQUIRED RATED INPUT: 220-240VAC, 50-60Hz, 3.5A (auto ranging power supplies with input ratings from 100VAC, are accepted) OUTPUT: +5VDC 30A; -5VDC 0.5A; +12VDC 12A; -12VDC 0.5A John Radomski Compliance Engineer Inter-Tel Integrated Systems, Chandler, Arizona, USA john_radom...@inter-tel.com mailto:john_radom...@inter-tel.com - This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to majord...@ieee.org mailto:majord...@ieee.org with the single line: unsubscribe emc-pstc (without the quotes). For help, send mail to ed.pr...@cubic.com mailto:ed.pr...@cubic.com , jim_bac...@monarch.com mailto:jim_bac...@monarch.com , ri...@sdd.hp.com mailto:ri...@sdd.hp.com , or roger.volgst...@compaq.com mailto:roger.volgst...@compaq.com (the list administrators). - This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to majord...@ieee.org mailto:majord...@ieee.org with the single line: unsubscribe emc-pstc (without the quotes). For help, send mail to ed.pr...@cubic.com mailto:ed.pr...@cubic.com , jim_bac...@monarch.com mailto:jim_bac...@monarch.com , ri...@sdd.hp.com mailto:ri...@sdd.hp.com , or roger.volgst...@compaq.com mailto:roger.volgst...@compaq.com (the list administrators). - This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to majord...@ieee.org with the single line: unsubscribe emc-pstc (without the quotes). For help, send mail to ed.pr...@cubic.com, jim_bac...@monarch.com, ri...@sdd.hp.com, or roger.volgst...@compaq.com (the list administrators).
RE: PC Power Supply w/ PFC
I suggest contacting Cherokee International in Tustin, CA at 714 544 6665. According to my records from 1997 they had a new (at that time) MQT250 series power supplies that come close to your requirements. Maybe with a little tweeking they can get you what you want. George Seminsky Nuera Communications, Inc. Compliance Engineering Ph 619 625 9220 X1248 Fx 619 625 2422 -Original Message- From: Ehler, Kyle [mailto:kyle.eh...@lsil.com] Sent: Wednesday, August 18, 1999 6:30 AM To: John Radomski; emc-p...@majordomo.ieee.org Subject: RE: PC Power Supply w/ PFC John, When you find one, post the vendor here on the list. -we looked for one also, but with ATX wiring, and could not find one that had international compliance. The vendor is Sunpower model SAP 6300P. It is CE marked and specifically marked with 'passes harmonics' and standard, but there is no international compliance markings (or UL). The vendor is aware of the harmonics issue. I don't have a model number for the straight pc version supply. I have tested this supply and I can tell you it is much cleaner than the non-pfc counterpart. Since I had to probe this supply with thermocouples for the heating test, I examined the innards and saw that the PFC circuitry is actually a module and is more of an optional upgrade. The case of the supply was not intended for this upgrade, but the circuit board of the supply did have a connector where the PFC module wiring was connected. The mounting of the module was a bit ad hoc. Interestingly, the vendor offered to upgrade the other supplies we had on hand in the lab. Kyle -Original Message- From: John Radomski [SMTP:john_radom...@inter-tel.com] Sent: Tuesday, August 17, 1999 12:34 PM To: emc-p...@majordomo.ieee.org Subject:PC Power Supply w/ PFC We are looking for a supplier of 300 Watt PS2, PC power supplies that have PFC (Power Correction Factor). Here is the spec: It must comply with: EN 60950 (safety approval required), EN 50082-1, EN 61000-3-2/3, CISPR 22 (or EN 55022). REQUIRED RATED INPUT: 220-240VAC, 50-60Hz, 3.5A (auto ranging power supplies with input ratings from 100VAC, are accepted) OUTPUT: +5VDC 30A; -5VDC 0.5A; +12VDC 12A; -12VDC 0.5A John Radomski Compliance Engineer Inter-Tel Integrated Systems, Chandler, Arizona, USA john_radom...@inter-tel.com - This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to majord...@ieee.org with the single line: unsubscribe emc-pstc (without the quotes). For help, send mail to ed.pr...@cubic.com, jim_bac...@monarch.com, ri...@sdd.hp.com, or roger.volgst...@compaq.com (the list administrators). - This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to majord...@ieee.org with the single line: unsubscribe emc-pstc (without the quotes). For help, send mail to ed.pr...@cubic.com, jim_bac...@monarch.com, ri...@sdd.hp.com, or roger.volgst...@compaq.com (the list administrators). - This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to majord...@ieee.org with the single line: unsubscribe emc-pstc (without the quotes). For help, send mail to ed.pr...@cubic.com, jim_bac...@monarch.com, ri...@sdd.hp.com, or roger.volgst...@compaq.com (the list administrators).
RE: PC Power Supply w/ PFC
John, When you find one, post the vendor here on the list. -we looked for one also, but with ATX wiring, and could not find one that had international compliance. The vendor is Sunpower model SAP 6300P. It is CE marked and specifically marked with 'passes harmonics' and standard, but there is no international compliance markings (or UL). The vendor is aware of the harmonics issue. I don't have a model number for the straight pc version supply. I have tested this supply and I can tell you it is much cleaner than the non-pfc counterpart. Since I had to probe this supply with thermocouples for the heating test, I examined the innards and saw that the PFC circuitry is actually a module and is more of an optional upgrade. The case of the supply was not intended for this upgrade, but the circuit board of the supply did have a connector where the PFC module wiring was connected. The mounting of the module was a bit ad hoc. Interestingly, the vendor offered to upgrade the other supplies we had on hand in the lab. Kyle -Original Message- From: John Radomski [SMTP:john_radom...@inter-tel.com] Sent: Tuesday, August 17, 1999 12:34 PM To: emc-p...@majordomo.ieee.org Subject:PC Power Supply w/ PFC We are looking for a supplier of 300 Watt PS2, PC power supplies that have PFC (Power Correction Factor). Here is the spec: It must comply with: EN 60950 (safety approval required), EN 50082-1, EN 61000-3-2/3, CISPR 22 (or EN 55022). REQUIRED RATED INPUT: 220-240VAC, 50-60Hz, 3.5A (auto ranging power supplies with input ratings from 100VAC, are accepted) OUTPUT: +5VDC 30A; -5VDC 0.5A; +12VDC 12A; -12VDC 0.5A John Radomski Compliance Engineer Inter-Tel Integrated Systems, Chandler, Arizona, USA john_radom...@inter-tel.com - This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to majord...@ieee.org with the single line: unsubscribe emc-pstc (without the quotes). For help, send mail to ed.pr...@cubic.com, jim_bac...@monarch.com, ri...@sdd.hp.com, or roger.volgst...@compaq.com (the list administrators). - This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to majord...@ieee.org with the single line: unsubscribe emc-pstc (without the quotes). For help, send mail to ed.pr...@cubic.com, jim_bac...@monarch.com, ri...@sdd.hp.com, or roger.volgst...@compaq.com (the list administrators).
Re: PC Power Supply w/ PFC
Try Digital Power Corp in Fremont, CA 510 657 2635 or their VP Mktg: bh...@digipwr.com - Robert - We are looking for a supplier of 300 Watt PS2, PC power supplies that have PFC (Power Correction Factor). Here is the spec: It must comply with: EN 60950 (safety approval required), EN 50082-1, EN 61000-3-2/3, CISPR 22 (or EN 55022). REQUIRED RATED INPUT: 220-240VAC, 50-60Hz, 3.5A (auto ranging power supplies with input ratings from 100VAC, are accepted) OUTPUT: +5VDC 30A; -5VDC 0.5A; +12VDC 12A; -12VDC 0.5A John Radomski Compliance Engineer Inter-Tel Integrated Systems, Chandler, Arizona, USA john_radom...@inter-tel.com - This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to majord...@ieee.org with the single line: unsubscribe emc-pstc (without the quotes). For help, send mail to ed.pr...@cubic.com, jim_bac...@monarch.com, ri...@sdd.hp.com, or roger.volgst...@compaq.com (the list administrators).
Re: PC Power Supply w/ PFC
John, I don't think that you will be able to find many off the shelf PC type power supply that satisfies yourrequirements.i.e with PFC and autorange. In order to keep the cost down, they manufacturers of the PC power supplies avoid PFC which automatically bring the universal input anyway. I suggest you try some of the big name in the industry and perhaps get someone to custom design it for you. Good luck Peter - This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to majord...@ieee.org with the single line: unsubscribe emc-pstc (without the quotes). For help, send mail to ed.pr...@cubic.com, jim_bac...@monarch.com, ri...@sdd.hp.com, or roger.volgst...@compaq.com (the list administrators).
PC Power Supply w/ PFC
We are looking for a supplier of 300 Watt PS2, PC power supplies that have PFC (Power Correction Factor). Here is the spec: It must comply with: EN 60950 (safety approval required), EN 50082-1, EN 61000-3-2/3, CISPR 22 (or EN 55022). REQUIRED RATED INPUT: 220-240VAC, 50-60Hz, 3.5A (auto ranging power supplies with input ratings from 100VAC, are accepted) OUTPUT: +5VDC 30A; -5VDC 0.5A; +12VDC 12A; -12VDC 0.5A John Radomski Compliance Engineer Inter-Tel Integrated Systems, Chandler, Arizona, USA john_radom...@inter-tel.com - This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to majord...@ieee.org with the single line: unsubscribe emc-pstc (without the quotes). For help, send mail to ed.pr...@cubic.com, jim_bac...@monarch.com, ri...@sdd.hp.com, or roger.volgst...@compaq.com (the list administrators).
Re: PFC on PS2 power supplies
Hi, Sparkle Power, Inc has a 300W, either with internal or external fan form factor. I can not say if it passes flicker and power line harmonics, nor can I vouch for the quality or reliability of the supply. The contact is David Hwang @ 408-945-1314 x105 FAX: 408-945-1385 Good luck. tony_fredriks...@netpower.com -- From: robert.macy To: emc-pstc Subject: Re: PFC on PS2 power supplies List-Post: emc-pstc@listserv.ieee.org Date: Wednesday, April 30, 1997 4:26PM cc: Paul Herrick cc: emc-p...@ieee.org 00From: Paul Herrick 0007515...@mcimail.com 00Subject: PFC on PS2 power supplies 00Does anyone know of a power supply manufacturer that presently has a power 00factor corrected, PS2 form factor, (or ATX form factor) power supply? Digital Power 510 657 2635 Fremont, CA Sorry, don't know if they have one, or are developing one. It's worth checking, though. - Robert - robert.m...@engineers.com AJM Electronics --- ~ OLX 2.1 TD ~ It seems I have a hole in my marble bag.
Re: PFC on PS2 power supplies
cc: Paul Herrick cc: emc-p...@ieee.org 00From: Paul Herrick 0007515...@mcimail.com 00Subject: PFC on PS2 power supplies 00Does anyone know of a power supply manufacturer that presently has a power 00factor corrected, PS2 form factor, (or ATX form factor) power supply? Digital Power 510 657 2635 Fremont, CA Sorry, don't know if they have one, or are developing one. It's worth checking, though. - Robert - robert.m...@engineers.com AJM Electronics --- ~ OLX 2.1 TD ~ It seems I have a hole in my marble bag.
