RE: CE mark on development/evaluation boards ?
I don't want to self-certify and so a competent body looks like the way to go. Dave, As I understand the EMCD, the manufacturer is the only person responsible for the conformity of the apparatus, so he (or his authorized representative in the EEA) has to issues a written EC Declaration of Conformity (and affix the CE marking). Competent bodies are to help complete the conformity assessment. John Radomski Schneider Electric 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 Archive is being moved, we will announce when it is back on-line. All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc
Capacitors bridging basic and supplementary insulation
I am designing a filter for a TNV-3 telephone interface to help pass EN 55024 rf conducted immunity tests. As I understand it, for 60950, basic insulation is required between TNV-3 circuits and chassis ground, and supplementary insulation for Sweden and Norway. Do capacitors bridging basic and supplementary insulation (i.e. tip and ring to frame ground) have to comply with IEC 60384-14? Best regards, David. David Gelfand Approvals/Design Engineer Memotec Inc. Tel: 514 738 4781 x4151 Fax: 514 738 4436 david.gelf...@memotec.com 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 Archive is being moved, we will announce when it is back on-line. All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc
Approval of WLAN 802.11 in Latvia
Hi all, We got information from the Ministry of Transport of the Republic of Latvia that the Telecommunications state inspection is passing an accreditation which is required according to the new regulations of the Cabinet of Ministers of Latvia. That is apparently impacting timescales for obtaining WLAN products type approved in Latvia. Does anybody heard about it and have further details? Best regards Pierre-Marie Andre Senior Approval Engineer
RE: Fw, Yahoo Groups Recommendation?: Changes to IEEE emc-pstc we b-based services...
The problem isn't with Yahoo. You need to spank your net nanny. From: Garnier, David S (MED) [mailto:david.garn...@med.ge.com] Sent: Thursday, March 13, 2003 9:54 AM To: 'Guy Boone'; emc-p...@majordomo.ieee.org Subject: RE: Fw, Yahoo Groups Recommendation?: Changes to IEEE emc-pstc we b-based services... Pardon me if this has been decided already but I think you need to be made aware of this. Our corporate net nanny has blocked access to all Yahoo accounts (and other free mail accounts) - moving the EMC listserve there would prevent access from anyone within the GE.COM domain. Our local IEEE EMC chapter is blocked, (all appeals for access have been ignored.) You might me asking yourself why should I care? (Dave could certainly subscribe to the listserve at home - ((please enable the digest mode.)) This company is a trendsetter and many others emulate our practices, your impending move may impact other subscribers in the future. David Garnier e GE Medical Systems ___ David S. Garnier Senior Technician PET Engineering 3000 N. Grandview Ave - M/S W-1250 Waukesha, Wi. 53188 Tel: 262.312.7246 From: Guy Boone [mailto:bo...@sympatico.ca] Sent: Wednesday, March 05, 2003 3:24 PM To: emc-p...@majordomo.ieee.org Subject: Fw, Yahoo Groups Recommendation?: Changes to IEEE emc-pstc web-based services... Jim/Richard; Any update on the data transfer from http://ieeepstc.mindcruiser.com/ http://ieeepstc.mindcruiser.com/ to ttps://www.ieeecommunities.org/emc-pstc https://www.ieeecommunities.org/emc-pstc... or a tentative date? For your information... the Yahoo group http://groups.yahoo.com/group/emc-pstc/ http://groups.yahoo.com/group/emc-pstc/ can be easily configured to operate both as a listserver-based service and a web-based service. As a web-based service, https://www.ieeecommunities.org/emc-pstc https://www.ieeecommunities.org/emc-pstc does offer some advantages over Yahoo Groups (as referenced below)... but as a listserver-based service, it's advantage over majordomo is that it allows the member to control the delivery of messages (ie, individual emails, daily digest or no email) and messages can be viewed online http://groups.yahoo.com/group/emc-pstc/messages. I would recommend that you consider a migration to Yahoo Groups, once the data transfer to https://www.ieeecommunities.org/emc-pstc https://www.ieeecommunities.org/emc-pstc is complete. Should the planned data transfer be not possible, you may want to consider a full migration to Yahoo Groups, as listserver/web-based solution. Here in Ottawa, Canada... we have a group called RAFT - Regulatory Approvals Forum for Technology, and have been using Yahoo Groups http://groups.yahoo.com/group/RAFT-Global/ http://groups.yahoo.com/group/RAFT-Global/ for the past 2 years. I have joined http://groups.yahoo.com/group/emc-pstc/ http://groups.yahoo.com/group/emc-pstc/ some time ago... If you want to give it some consideration, I can volunteer to make the additional configuration changes. Please let me know your thought, and the Group owner will need to have me assigned as Moderator. Regards, http://ca.geocities.com/guyboone/My_Page.html Guy Boone, P. Eng Electrical Engineer, specializing in Safety Compliance, Power/Control Systems Design Buildings Engineering Steering Committee Member - http://www.raft-global.org/ www.RAFT-Global.org 35 Athena Way Tel: 613-823-7534 Ottawa (Nepean), ON K2G 6S1 Cell: 613-850-6533 From: owner-emc-p...@majordomo.ieee.org [mailto:owner-emc-p...@majordomo.ieee.org]On Behalf Of Jim Bacher Sent: January 23, 2003 10:54 AM To: 'Andre, Pierre-Marie'; emc-p...@majordomo.ieee.org Subject: RE: EMC-PSTC Email Forum We have had a couple major glitches with the movement of data. We are working on an alternate solution to the issue. As soon as we have worked out the details we will let you know. Jim From: owner-emc-p...@majordomo.ieee.org [mailto:owner-emc-p...@majordomo.ieee.org]On Behalf Of Andre, Pierre-Marie Sent: January 23, 2003 4:24 AM To: emc-p...@majordomo.ieee.org Subject: EMC-PSTC Email Forum On the http://www.ewh.ieee.org/soc/emcs/pstc/index.html http://www.ewh.ieee.org/soc/emcs/pstc/index.html I can read : The EMC-PSTC archives will be moved to another site shortly. The new location will be announced shortly. Make sure you check here often. Is there any target date to make the new location available? Many thanks for your answer This forum is really useful Pierre-Marie Andre Senior Approval Engineer From: owner-emc-p...@majordomo.ieee.org [mailto:owner-emc-p...@majordomo.ieee.org]On Behalf Of Rich Nute Sent: January 2, 2003 12:22 PM To: Product Safety Technical Committee Cc: Jim Bacher; mg.ca...@ieee.org Subject: The listserver WILL continue. Thank you for all the comments on the
Re: flicker harmonics currents reduction
I read in !emc-pstc that Eurtronik Studioerre studioe...@eurtronik.it wrote (in 000201c2ea17$1d29a0d0$6401a8c0@Seinternet) about 'flicker harmonics currents reduction' on Fri, 14 Mar 2003: does anybody know a way to reduce flickering harmonics currents in order to meet EN 61000-3-2 EN 61000-3-3 in consumer electronics products? It can be easy or almost impossible, but if it's really impossible, there are special provisions to overcome that. Especially, I have a steam cleaning machine with phase-cut power control (similar to light dimmers) that doesn't want to meet the two standards together. The phase-cut control gives a lot of problems in harmonic currents, but goes well for the flicker. You don't give enough information. What is the power? Which Class of EN 61000-3-2 do you think the product falls into? On the other hand, switching the power on and off in a slow (seconds) duty cycle, goes well for the harmonic currents limits, but it creates an hard flicker problem! Yes. I know that introducing a Power Factor Corrector circuit helps so much in harmonic currents reduction, but this is very expensive It is indeed, and there MAY be no need. Please answer the questions above and then we'll see what can be done. -- 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 Archive is being moved, we will announce when it is back on-line. All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc
Re: Fw, Yahoo Groups Recommendation?: Changes to IEEE emc-pstc web-based services...
Sure seems like a case of control mania by a service provider Czar. Surely one address within a domain can be accepted. Dave George - Original Message - From: Garnier, David S (MED) mailto:david.garn...@med.ge.com To: 'Guy Boone' mailto:bo...@sympatico.ca ; emc-p...@majordomo.ieee.org Sent: Thursday, March 13, 2003 12:54 PM Subject: RE: Fw, Yahoo Groups Recommendation?: Changes to IEEE emc-pstc web-based services... Pardon me if this has been decided already but I think you need to be made aware of this. Our corporate net nanny has blocked access to all Yahoo accounts (and other free mail accounts) - moving the EMC listserve there would prevent access from anyone within the GE.COM domain. Our local IEEE EMC chapter is blocked, (all appeals for access have been ignored.) You might me asking yourself why should I care? (Dave could certainly subscribe to the listserve at home - ((please enable the digest mode.)) This company is a trendsetter and many others emulate our practices, your impending move may impact other subscribers in the future. David Garnier e GE Medical Systems ___ David S. Garnier Senior Technician PET Engineering 3000 N. Grandview Ave - M/S W-1250 Waukesha, Wi. 53188 Tel: 262.312.7246 From: Guy Boone [mailto:bo...@sympatico.ca] Sent: Wednesday, March 05, 2003 3:24 PM To: emc-p...@majordomo.ieee.org Subject: Fw, Yahoo Groups Recommendation?: Changes to IEEE emc-pstc web-based services... Jim/Richard; Any update on the data transfer from http://ieeepstc.mindcruiser.com/ http://ieeepstc.mindcruiser.com/ to ttps://www.ieeecommunities.org/emc-pstc https://www.ieeecommunities.org/emc-pstc... or a tentative date? For your information... the Yahoo group http://groups.yahoo.com/group/emc-pstc/ http://groups.yahoo.com/group/emc-pstc/ can be easily configured to operate both as a listserver-based service and a web-based service. As a web-based service, https://www.ieeecommunities.org/emc-pstc https://www.ieeecommunities.org/emc-pstc does offer some advantages over Yahoo Groups (as referenced below)... but as a listserver-based service, it's advantage over majordomo is that it allows the member to control the delivery of messages (ie, individual emails, daily digest or no email) and messages can be viewed online http://groups.yahoo.com/group/emc-pstc/messages. I would recommend that you consider a migration to Yahoo Groups, once the data transfer to https://www.ieeecommunities.org/emc-pstc https://www.ieeecommunities.org/emc-pstc is complete. Should the planned data transfer be not possible, you may want to consider a full migration to Yahoo Groups, as listserver/web-based solution. Here in Ottawa, Canada... we have a group called RAFT - Regulatory Approvals Forum for Technology, and have been using Yahoo Groups http://groups.yahoo.com/group/RAFT-Global/ http://groups.yahoo.com/group/RAFT-Global/ for the past 2 years. I have joined http://groups.yahoo.com/group/emc-pstc/ http://groups.yahoo.com/group/emc-pstc/ some time ago... If you want to give it some consideration, I can volunteer to make the additional configuration changes. Please let me know your thought, and the Group owner will need to have me assigned as Moderator. Regards, http://ca.geocities.com/guyboone/My_Page.html Guy Boone, P. Eng Electrical Engineer, specializing in Safety Compliance, Power/Control Systems Design Buildings Engineering Steering Committee Member - http://www.raft-global.org/ www.RAFT-Global.org 35 Athena Way Tel: 613-823-7534 Ottawa (Nepean), ON K2G 6S1 Cell: 613-850-6533 From: owner-emc-p...@majordomo.ieee.org [mailto:owner-emc-p...@majordomo.ieee.org]On Behalf Of Jim Bacher Sent: January 23, 2003 10:54 AM To: 'Andre, Pierre-Marie'; emc-p...@majordomo.ieee.org Subject: RE: EMC-PSTC Email Forum We have had a couple major glitches with the movement of data. We are working on an alternate solution to the issue. As soon as we have worked out the details we will let you know. Jim From: owner-emc-p...@majordomo.ieee.org [mailto:owner-emc-p...@majordomo.ieee.org]On Behalf Of Andre, Pierre-Marie Sent: January 23, 2003 4:24 AM To: emc-p...@majordomo.ieee.org Subject: EMC-PSTC Email Forum On the http://www.ewh.ieee.org/soc/emcs/pstc/index.html http://www.ewh.ieee.org/soc/emcs/pstc/index.html I can read : The EMC-PSTC archives will be moved to another site shortly. The new location will be announced shortly. Make sure you check here often. Is there any target date to make the new location available? Many thanks for your answer This forum is really useful Pierre-Marie Andre Senior Approval Engineer From: owner-emc-p...@majordomo.ieee.org [mailto:owner-emc-p...@majordomo.ieee.org]On Behalf Of Rich Nute Sent: January 2, 2003 12:22 PM To: Product Safety Technical
RE: Fw, Yahoo Groups Recommendation?: Changes to IEEE emc-pstc we b-based services...
Brian, the firewalls exist for many of us, concerning emailing and free accounts, your right,its with corporate, not Yahoo.. From: Brian Epstein [mailto:brian.epst...@veeco.com] Sent: Thursday, March 13, 2003 2:59 PM To: 'Garnier, David S (MED)'; 'Guy Boone'; emc-p...@majordomo.ieee.org Subject: RE: Fw, Yahoo Groups Recommendation?: Changes to IEEE emc-pstc we b-based services... The problem isn't with Yahoo. You need to spank your net nanny. From: Garnier, David S (MED) [mailto:david.garn...@med.ge.com] Sent: Thursday, March 13, 2003 9:54 AM To: 'Guy Boone'; emc-p...@majordomo.ieee.org Subject: RE: Fw, Yahoo Groups Recommendation?: Changes to IEEE emc-pstc we b-based services... Pardon me if this has been decided already but I think you need to be made aware of this. Our corporate net nanny has blocked access to all Yahoo accounts (and other free mail accounts) - moving the EMC listserve there would prevent access from anyone within the GE.COM domain. Our local IEEE EMC chapter is blocked, (all appeals for access have been ignored.) You might me asking yourself why should I care? (Dave could certainly subscribe to the listserve at home - ((please enable the digest mode.)) This company is a trendsetter and many others emulate our practices, your impending move may impact other subscribers in the future. David Garnier e GE Medical Systems ___ David S. Garnier Senior Technician PET Engineering 3000 N. Grandview Ave - M/S W-1250 Waukesha, Wi. 53188 Tel: 262.312.7246 From: Guy Boone [mailto:bo...@sympatico.ca] Sent: Wednesday, March 05, 2003 3:24 PM To: emc-p...@majordomo.ieee.org Subject: Fw, Yahoo Groups Recommendation?: Changes to IEEE emc-pstc web-based services... Jim/Richard; Any update on the data transfer from http://ieeepstc.mindcruiser.com/ http://ieeepstc.mindcruiser.com/ to ttps://www.ieeecommunities.org/emc-pstc https://www.ieeecommunities.org/emc-pstc... or a tentative date? For your information... the Yahoo group http://groups.yahoo.com/group/emc-pstc/ http://groups.yahoo.com/group/emc-pstc/ can be easily configured to operate both as a listserver-based service and a web-based service. As a web-based service, https://www.ieeecommunities.org/emc-pstc https://www.ieeecommunities.org/emc-pstc does offer some advantages over Yahoo Groups (as referenced below)... but as a listserver-based service, it's advantage over majordomo is that it allows the member to control the delivery of messages (ie, individual emails, daily digest or no email) and messages can be viewed online http://groups.yahoo.com/group/emc-pstc/messages. I would recommend that you consider a migration to Yahoo Groups, once the data transfer to https://www.ieeecommunities.org/emc-pstc https://www.ieeecommunities.org/emc-pstc is complete. Should the planned data transfer be not possible, you may want to consider a full migration to Yahoo Groups, as listserver/web-based solution. Here in Ottawa, Canada... we have a group called RAFT - Regulatory Approvals Forum for Technology, and have been using Yahoo Groups http://groups.yahoo.com/group/RAFT-Global/ http://groups.yahoo.com/group/RAFT-Global/ for the past 2 years. I have joined http://groups.yahoo.com/group/emc-pstc/ http://groups.yahoo.com/group/emc-pstc/ some time ago... If you want to give it some consideration, I can volunteer to make the additional configuration changes. Please let me know your thought, and the Group owner will need to have me assigned as Moderator. Regards, http://ca.geocities.com/guyboone/My_Page.html Guy Boone, P. Eng Electrical Engineer, specializing in Safety Compliance, Power/Control Systems Design Buildings Engineering Steering Committee Member - http://www.raft-global.org/ www.RAFT-Global.org 35 Athena Way Tel: 613-823-7534 Ottawa (Nepean), ON K2G 6S1 Cell: 613-850-6533 From: owner-emc-p...@majordomo.ieee.org [mailto:owner-emc-p...@majordomo.ieee.org]On Behalf Of Jim Bacher Sent: January 23, 2003 10:54 AM To: 'Andre, Pierre-Marie'; emc-p...@majordomo.ieee.org Subject: RE: EMC-PSTC Email Forum We have had a couple major glitches with the movement of data. We are working on an alternate solution to the issue. As soon as we have worked out the details we will let you know. Jim From: owner-emc-p...@majordomo.ieee.org [mailto:owner-emc-p...@majordomo.ieee.org]On Behalf Of Andre, Pierre-Marie Sent: January 23, 2003 4:24 AM To: emc-p...@majordomo.ieee.org Subject: EMC-PSTC Email Forum On the http://www.ewh.ieee.org/soc/emcs/pstc/index.html http://www.ewh.ieee.org/soc/emcs/pstc/index.html I can read : The EMC-PSTC archives will be moved to another site shortly. The new location will be announced shortly. Make sure you check here often. Is there any target date to make the new location available? Many thanks for
Re: Capacitors bridging basic and supplementary insulation
In a message dated 3/14/2003, you write: As I understand it, for 60950, basic insulation is required between TNV-3 circuits and chassis ground, and supplementary insulation for Sweden and Norway. Do capacitors bridging basic and supplementary insulation (i.e. tip and ring to frame ground) have to comply with IEC 60384-14? Hi David: In Annex ZB of EN 60950, Third Edition, Norway and Sweden explicitly call out Y2 caps per EN 132400:1994, which I believe is based on IEC 384-14. Under EN 60950, Second Edition, the situation is less clear and there are some different interpretations in use. I believe that Semko has issued an interpretation that under the Second Edition, Y3 caps can be used if they are subjected to an additional surge test. Some other labs, however, will accept any cap as long as it meets the applicable requirements for creepage, clearance, and hipot. I think the Second Edition will be withdrawn in 2006, so there are a few years still where Y3 caps can be used. Novacap (http://www.novacap.com) sells surface mount versions of both Y2 and Y3 caps. In general, the through-hole ceramic disc versions are much less expensive, since they are manufactured by a large number of companies including some Asian suppliers. Joe Randolph Telecom Design Consultant Randolph Telecom, Inc. 781-721-2848 j...@randolph-telecom.com http://www.randolph-telecom.com
Re: flicker harmonics currents reduction
I can think of only two way to reduce flicker, provide the control you need, and keep harmonics low. The first you already mentioned - a power factor corrector (really a harmonic corrector that also corrects power factor at the same time). What you need should be quite a bit less expensive than a typical power factor corrected switching power supply. You need no more than the power factor correction circuitry, with power flow controlled by heat demand rather than the need to maintain voltage on an energy storage capacitor (as in a switching power supply). The design is a bit different, but not greatly so. The other solution would be to have several heater elements and switch them carefully. For example, if you presently have a 1500 watt heater, you might be able to break it up into a 500 watt heater and a 1000 watt heater. The switching would be done so that there was never more than a 500 watt change at any time. For example, when the device is first switched on, it would not start immediately at 1500 watts, but would start at 500 watts, switch to 1000 watts, and then switch to 1500 watts. These smaller steps, properly timed, might be enough to pass the flicker standard. NOTE: I have not done any analysis to prove that this would meet the flicker standard. The only other thing that comes to mind is a circuit with a power transistor. The circuit makes the power transistor look like a controllable resistor, and the transistor is the heater. Well, it was just a thought. Don Borowski Schweitzer Engineering Labs Pullman, WA, USA Eurtronik Studioerre studioe...@eurtronik.it@majordomo.ieee.org on 03/14/2003 02:45:27 AM Please respond to Eurtronik Studioerre studioe...@eurtronik.it Sent by:owner-emc-p...@majordomo.ieee.org To:emc-p...@majordomo.ieee.org cc: Subject:flicker harmonics currents reduction Hi, does anybody know a way to reduce flickering harmonics currents in order to meet EN 61000-3-2 EN 61000-3-3 in consumer electronics products? Especially, I have a steam cleaning machine with phase-cut power control (similar to light dimmers) that doesn't want to meet the two standards together. The phase-cut control gives a lot of problems in harmonic currents, but goes well for the flicker. On the other hand, switching the power on and off in a slow (seconds) duty cycle, goes well for the harmonic currents limits, but it creates an hard flicker problem! I know that introducing a Power Factor Corrector circuit helps so much in harmonic currents reduction, but this is very expensive Many thanks for your help, Federico Quadri emc lab test engineer Eurtronik Studioerre Srl Via Andrea Costa, 35 40013 Castelmaggiore (BO) - Italy T +39-051-703284 F +39-051-700904 e-mail studioe...@eurtronik.it 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 Archive is being moved, we will announce when it is back on-line. All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc
flicker harmonics currents reduction
Hi, does anybody know a way to reduce flickering harmonics currents in order to meet EN 61000-3-2 EN 61000-3-3 in consumer electronics products? Especially, I have a steam cleaning machine with phase-cut power control (similar to light dimmers) that doesn't want to meet the two standards together. The phase-cut control gives a lot of problems in harmonic currents, but goes well for the flicker. On the other hand, switching the power on and off in a slow (seconds) duty cycle, goes well for the harmonic currents limits, but it creates an hard flicker problem! I know that introducing a Power Factor Corrector circuit helps so much in harmonic currents reduction, but this is very expensive Many thanks for your help, Federico Quadri emc lab test engineer Eurtronik Studioerre Srl Via Andrea Costa, 35 40013 Castelmaggiore (BO) - Italy T +39-051-703284 F +39-051-700904 e-mail studioe...@eurtronik.it
