Flicker problem
I have a number of products that must meet the requirements of EN 61000-3-3 for voltage fluctuation but I am having problems complying. The failure happens when a vacuum pump is switched on during a cycle of the machine and then it is switched off. The inrush that occurs is about 35 amps with a running current of 5 amps. We switch the pump on and off with a SSR zero crossing. I would like to solve this problem with the least cost to meet the test requirement. I have tried powering the pump with a 25ohm power resistor in series and a time delay relay to switch the resistor out. This works reasonably well and reduces the inrush to 10 amps but the time delay relay I am using is about $60 and it doesn't have a high enough current rating for the contacts to use it in production. I will be getting in a Crydom SST soft start relay combination to try but it has other implementation problems such as my control voltage is +24 Vdc and it is rated to +10 Vdc plus the soft start module is not VDE approved so it might not have the creepage require to satisfy the safety guys. Does anyone have a suggestion such as a certified soft start relay or some elegant fix that I could implement. I would appreciate any comments or personal triumphs in solving flicker problems. The circuit specs are; AC input 200-240Vac, pump current 5 amps, control +24Vdc. Thanks, Ray Levasseur EMC Compliance CreoScitex _ Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.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: 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: Harmonics - A14 revision
3.0.6.32.20010301104158.007f5...@mail.cinepower.com, Enci e...@cinepower.com inimitably wrote: When is the next revision due and can you tell us anything more about it? It will probably be published in 2003 or 2004 and become mandatory in Europe 3 years later. As yet there is no text other than 'housekeeping' text. But there is a great deal of work going on in order to produce a realistic, consensual standard. Limits will need to be fully justified technically. -- 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: Battery terminals isolation
008a01c0a262$97a76a80$0f133ad8@zi8755, Ralph Cameron ral...@igs.net inimitably wrote: How about an insulated wrench? Missing, just when you want it. -- 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: SLIM
In message 002301c0a16a$27dbdea0$9641c0c1@oemcomputer Brian Jones writes: The seventh draft of the revised EMC Directive has been produced by the European Commission for discussion at the meeting of the EMC Working Party on 6-7 March 2001. This meeting of member state governments (with some representation from industry) is one of a regular series, the SLIM Working Group having held its last meeting in November 2000 with EMCD2000.6 being the final outcome. The main change in 2000.7 is the removal of the various options. The options selected in 2000.7 are FI2, NB1, ED1, ENV3 and HS1. These are of course open to debate and change at the meeting. In my view two of the option selections are seriously mistaken and I hope those able to debate and (hopefully) change will reconsider them: The adoption of ED1 rather than ED2: The phrase technically competent could become an excuse for introducing licensing or registration. As well as increasing the cost of compliance, the possibility of different licensing/registration criteria applying in different Member States would constitute a barrier to trade. More important, the adoption of HS1 is seriously wrong as it mandates the use of the methods the harmonised standard describes or refers to without provision for the use of equivalent or newly evolved methods that may be simpler, cheaper and/or use existing test equipment rather than that mandated in the standard. Bill Lyons -- Bill Lyons - b...@lyons.demon.co.uk / w.ly...@ieee.org Claude Lyons Limited, Brook Road, Waltham Cross, Herts EN8 7LR, UK Tel: +44 1992 768 888 http://www.lyons.demon.co.uk Fax: +44 1992 769 849 http://www.claudelyons.co.uk --- 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: Fiber optic Compliance
Cortland, et al; Fiber optic cable is provided with fire resistant lo smoke coatings, just like other cable... this is usually specified for installations... generally the driver device folks don't supply the fiber optic cable, but... The copper to fiber optic converters usually contain lasers and need to comply to North American (CDRH Can equivalent) and Euro 825 laser requirements... Component suppliers usually provide component recognition on their unit to aid the equipment suppliers in their certification process... (and to keep the equipment suppliers from digging into the design of their unit too deeply)... Some equipment suppliers also want some level of NEBS certification of the FO driver unit, too... Wot else??? br, Pete Peter E Perkins, PE Principal Product Safety Consultant Tigard, ORe 97281-3427 503/452-1201 fone/fax p.perk...@ieee.org --- 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: HP684XA harmonics analyser software
Hi Chris, I spoke with Agilent in Rockaway a couple of weeks ago and they assured me they will be addressing A14 with a software update. That is the good news. However, it will not be ready for another 4 -6 months!!! Best regards, Jim Colgan, Chris wrote on 2/28/01 8:41 am: Hi all Does anyone know if Agilent have written a software upgrade (for A14 of EN61000-3-2) for their harmonics analysers yet? The Agilent website won't tell and their contact link is broken. Regards Chris Colgan Compliance Engineer TAG McLaren Audio Ltd The Summit, Latham Road Huntingdon, Cambs, PE29 6ZU *Tel: +44 (0)1480 415 627 *Fax: +44 (0)1480 52159 * Mailto:chris.col...@tagmclarenaudio.com http://www.tagmclarenaudio.com ** Please visit us at www.tagmclarenaudio.com ** The contents of this E-mail are confidential and for the exclusive use of the intended recipient. If you receive this E-mail in error, please delete it from your system immediately and notify us either by E-mail, telephone or fax. You should not copy, forward or otherwise disclose the content of the E-mail. TAG McLaren Audio Ltd The Summit, 11 Latham Road Huntingdon, Cambs, PE29 6ZU Telephone : 01480 415600 (+44 1480 415600) Facsimile : 01480 52159 (+44 1480 52159) ** Please visit us at www.tagmclarenaudio.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: Michael Garretson: pstc_ad...@garretson.org Dave Healdapplication/ms-tnef
Re: Battery terminals isolation
John: How about an insulated wrench? Ralph Cameron EMC Consulting and Suppression of Consumer Electronics (After sale) - Original Message - From: John Woodgate j...@jmwa.demon.co.uk To: emc-p...@majordomo.ieee.org Sent: Wednesday, February 28, 2001 3:47 PM Subject: Re: Battery terminals isolation sa9d1398.077@sao0002n, SERGIO LUIZ DA ROCHA LOURES SERGIO sergioro...@siemens.com.br inimitably wrote: Can the group tell me if there is any requirement about isolations of lead acid battery terminals? We have a 48V equipment powered by lead acid batteries. The negative of the batteries set is connected to the enclosure. When the batteries need to be replaced, short circuit happens if the tool used to detach the connectors touch the enclosure and the positive of the batteries. Information to disconnect the negative terminal first before replace the batteries is clear in the service manual, but I don't know if only this is sufficient. I don't know of anything explicit in any standard, but the consequences of shorting a 48 V battery could be very serious, up to loss-of-life. Therefore I would think in terms of the General Safety Directive, which says, in effect, 'make it safe, then make it safer'. So: - put a warning notice **next to the battery** saying 'Disconnect THIS terminal first.' Don't rely on a drunken blind, idiot knowing which is the negative one. - if possible, fix to the negative connector a plastic shield that covers up the positive terminal and connector, so you can't even get at the positive terminal without first removing the negative one. If you need to be able to measure the battery voltage with a multimeter, put a small hole in the shield that will just admit a test-prod. You could perhaps put the warning notice on the shield itself. -- 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, --- 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: RTTE Directive
Hi Amund, I am not familiar with this type of device, however if you have confirmed that all standards that apply to the device are harmonized under the directive, you are correct that you can apply Annex III of the directive without the assistance of a NB. You are correct again that since the frequency band is not harmonized throughout the EU, you must Notify each member state of your intention to place the product on their market. Since you are using non-harmonized frequency bands, you must also apply the alert symbol on your device alerting the user that there are restrictions to the use of this device in some countries. Those restrictions should be placed on your label and in the operators guide. ~ Sam Wismer Lead Regulatory Engineer/ Radio Approvals Engineer LXE, Inc. (770) 447-4224 Ext. 3654 Visit Our Website at: http://www.lxe.com -Original Message- From: am...@westin.org [mailto:am...@westin.org] Sent: Thursday, March 01, 2001 4:29 AM To: emc-p...@majordomo.ieee.org Cc: wo...@sensormatic.com Subject: RE: RTTE Directive Hi all, Regarding RTTE and the NB role, we have this case: 1. Product: Satellite transmitter/reveicer, KU-band (10-14GHz) 2. Harmonized standards exist As far as I understand, we do not need a NB for certification. Apply annex III and issue a DoC. If the product shall be put into marked in EU countries, which the KU-band is not harmonized, a statement must be forwarded to the national authorities that the product soon will be introduced to the marked. Wait 4 weeks, no responds, you can go on selling. Am I right or am I totally ? The last one, any WEB-site that describes the Harmonized Frequency bands ? Best regards Amund Westin On Tue, 27 Feb 2001 15:55:15 -0500 wo...@sensormatic.com wrote: A representative is necessary if the manufacture is not resident in the EU. That entity keeps the technical file and performs any other duties expressly assigned by the manufacturer. This procedure is not related to any procedural requirements to use or not use a Notified Body. A Notified Body is needed if Annex III, IV or V applies. For example, our product is a short range device where the spectrum standard has not been published; so we must follow Annex IV and use a Notified Body. However, once the standard is harmonized, we will switch to following Annex III and a Notified Body will not be required. Richard Woods -- From: Courtland Thomas [SMTP:ctho...@patton.com] Sent: Tuesday, February 27, 2001 5:07 PM To: emcpost Subject: RTTE Directive Hello group, I have been reading through different articles on the RTTE Directive and getting somewhat confused. I have concluded that there is no requirement for an authorized representative within the Community any longer. This may have been the case all along, but it was good to have that person to submit the technical files to a notified body. I believe the notified body requirement goes away with the RTTE directive also. Now all that is required is for the manufacturer to maintain the technical file and produce the Declaration of Conformity. Am I on the right page? Thanks, Courtland Thomas Patton Electronics --- 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, -- Get your firstname@lastname email for FREE at http://Nameplanet.com/?su --- 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
Re: Harmonics - A14 revision
At 21:33 28/02/01 +, John Woodgate wrote: 31891b757c09184bbfec5275f85d55950b0...@cceexc18.americas.cpqcorp.net, Lesmeister, Glenn glenn.lesmeis...@compaq.com wrote: Why should all equipment need harmonic control when only some equipment cause problems? That's what the Amendment A14 to EN61000-3-2 (also voted positive by a majority of IEC P-members) attempts to address. The next revision will go even further. Hi John, When is the next revision due and can you tell us anything more about it? Regards, Enci --- 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: RTTE Directive
Hi all, Regarding RTTE and the NB role, we have this case: 1. Product: Satellite transmitter/reveicer, KU-band (10-14GHz) 2. Harmonized standards exist As far as I understand, we do not need a NB for certification. Apply annex III and issue a DoC. If the product shall be put into marked in EU countries, which the KU-band is not harmonized, a statement must be forwarded to the national authorities that the product soon will be introduced to the marked. Wait 4 weeks, no responds, you can go on selling. Am I right or am I totally ? The last one, any WEB-site that describes the Harmonized Frequency bands ? Best regards Amund Westin On Tue, 27 Feb 2001 15:55:15 -0500 wo...@sensormatic.com wrote: A representative is necessary if the manufacture is not resident in the EU. That entity keeps the technical file and performs any other duties expressly assigned by the manufacturer. This procedure is not related to any procedural requirements to use or not use a Notified Body. A Notified Body is needed if Annex III, IV or V applies. For example, our product is a short range device where the spectrum standard has not been published; so we must follow Annex IV and use a Notified Body. However, once the standard is harmonized, we will switch to following Annex III and a Notified Body will not be required. Richard Woods -- From: Courtland Thomas [SMTP:ctho...@patton.com] Sent: Tuesday, February 27, 2001 5:07 PM To: emcpost Subject: RTTE Directive Hello group, I have been reading through different articles on the RTTE Directive and getting somewhat confused. I have concluded that there is no requirement for an authorized representative within the Community any longer. This may have been the case all along, but it was good to have that person to submit the technical files to a notified body. I believe the notified body requirement goes away with the RTTE directive also. Now all that is required is for the manufacturer to maintain the technical file and produce the Declaration of Conformity. Am I on the right page? Thanks, Courtland Thomas Patton Electronics --- 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, -- Get your firstname@lastname email for FREE at http://Nameplanet.com/?su --- 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,
Revisions to 98/37/EC
The EC have finally published the proposals for revisions to 98/37/EC (the Machinery Directive). The document can be downloaded from http://europa.eu.int/comm/enterprise/mechan_equipment/machinery/direct /proposal_en.pdf I've not had time to read it yet, but it looks evolutionary rather than revolutionary. Nick. --- 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: Harmonics
Glenn, One answer is that one PC on its own can't be a problem, 200 PC's in different locations can in total have an effect on the supply system (and thus on other equipment connected to it - so with items in widespread use some individual product limit is needed) but with 200 PC's in a single location the total harmonic current drawn may be sufficient to cause serious site problems. Other examples we've been involved with include banks, trading floors, etc. A good analogy would be with leakage current. Even if a single device meets the product spec, supplying a number of devices in parallel (e.g. thru a socket strip) might be sufficient to exceed safe limits and trip protective devices. So site-level harmonic mitigation is a neccessary intermediate step between control of individual items of equipment at one end and protection of the supply system at the other. I expect John Woodgate can explain this much better than me! Regards, Bill Lyons Claude Lyons Limited Claude Lyons Limited, Brook Road, Waltham Cross, Herts EN8 7LR, UK Tel: +44 (0)1992 768 888 email: b...@lyons.demon.co.uk Fax: +44 (0)1992 769 849 URL: http://www.claudelyons.co.uk -Original Message- From: Lesmeister, Glenn glenn.lesmeis...@compaq.com To: emc-p...@ieee.org Subject: RE: Harmonics List-Post: emc-pstc@listserv.ieee.org Date: Wed, 28 Feb 2001 14:06:15 -0600 There may be a lot more to the story, but it sounds like the HRT is doing a good job. It also sounds like the frequency converter was the culprit and not the 200 PC's (or whatever) that was also connected to the power system. Why should all equipment need harmonic control when only some equipment cause problems? 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: m...@cjbdev.demon.co.uk [mailto:m...@cjbdev.demon.co.uk] Sent: Wednesday, February 28, 2001 11:48 AM To: emc-p...@ieee.org Subject:RE: Harmonics This month's Electrical Review (a free trade magazine in the UK) has just fallen on my desk, with this text and its associated picture taking up about a fifth of the area of the front page - I'm quoting it just for interest with regard to this thread! Perfect Harmony? Power conditioning equipment specialist Claude Lyons has installed a 200A harmonic rejection transformer at RAF Lakenheath to reduce the problems caused by harmonic currents. The recent installation of a frequency converter had caused harmonic distortion on the low-voltage network. Cables were overheating and equipment was failing. The HRT was specified to redirect the harmful currents. After installation, Claude Lyon monitored the unit and found a reduction in the production of harmonic currents - from 72 to 19A in the main neutral cable. Regards, Mark PS Disclaimer: any copyright breaches are my fault (in my ignorance) and not those of my employer. -- Mark Hone Wellman CJB Limited Email: m...@cjbdev.demon.co.uk Airport Service Road Tel: +44 (0)2392 629239 (Direct) Portsmouth, HampshireTel: +44 (0)2392 664911 PO3 5PG, ENGLAND Fax: +44 (0)2392 697864 --- 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,
