RMCEMC August Presentation Download available
To all interested parties: The presentation slides and photos from our August meeting "Troubleshooting IC Package Noise" are now available for download. To get the slides please go to our website http://www.ieee.org/rmcemc ** The UMR EMC Course comes to Colorado IALabs promotional offering * For full details please go to our website at http://www.ieee.org/rmcemc Thanks to Doug Smith for making this available. Charles Grasso RMCEMC Chair/Vice-Chair 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: emc_p...@symbol.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: MOV's (Varistor to Earth)
Spencer, It is possible to get UL 1449 approved MOVs up to 16 Amps, I think. See http://ulstandardsinfonet.ul.com/scopes/1449.html I find that because of the added capacitance of the MOV, the leakage current can go up unacceptably. I will typically couple the MOV with a gas tube that is rated higher than the line voltage. You now have to think about the voltages of the two keeping in mind the trip points and the fact that the gas tube clamps to ground while the MOV clamps to a voltage. -doug end Douglas E. Powell Corporate Compliance Dept. Advanced Energy Industries, Inc. Fort Collins, CO 80535 USA From: Spencer, David H [mailto:david.spen...@usa.xerox.com] Sent: Wednesday, September 10, 2003 9:49 AM To: 'emc-p...@ieee.org' Subject: MOV's (Varistors to Earth) Howdy All, I was curious if anyone out there has place a "separately certified" MOV >from Line (or Neutral) to Earth as a solution for Surge and placement in the EU. The specific application is a pluggable Type B. The OSM/EE Note 1.5.1 98/2 indicates that for Pluggable Type B (and permanently connected) equipment that provided the MOV is "separately certified" it is an acceptable option. See: http://www.lyons.demon.co.uk/cenlec01.pdf For my part this is a check to insure there are no other superceding requirements that would not allow a MOV from Line to Earth in the EU. Also, are most MOV's separately certified? Any additional information would be appreciated. Best Regards David Spencer 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: emc_p...@symbol.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 ___ This message, including any attachments, may contain information that is confidential and proprietary information of Advanced Energy Industries, Inc. The dissemination, distribution, use or copying of this message or any of its attachments is strictly prohibited without the express written consent of Advanced Energy Industries, Inc. 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: emc_p...@symbol.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
MOV's (Varistors to Earth)
Howdy All, I was curious if anyone out there has place a "separately certified" MOV >from Line (or Neutral) to Earth as a solution for Surge and placement in the EU. The specific application is a pluggable Type B. The OSM/EE Note 1.5.1 98/2 indicates that for Pluggable Type B (and permanently connected) equipment that provided the MOV is "separately certified" it is an acceptable option. See: http://www.lyons.demon.co.uk/cenlec01.pdf For my part this is a check to insure there are no other superceding requirements that would not allow a MOV from Line to Earth in the EU. Also, are most MOV's separately certified? Any additional information would be appreciated. Best Regards David Spencer 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: emc_p...@symbol.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: ITE Approvals Matrix (for small low power products)
Alex, I have just taken one of our products along this route. To answer your questions, yes you are right in your general conclusion, but I would make the following comments; 1. While all these countries standards have CISPR 22 as their parentage, it is best to make sure that your test house references all the National standards numbers in their reports. 2. An IEC CB report will maximise your international coverage, but for the US and Canada your report needs to reference the common standard UL/CSA 60950, and if I understood a recent thread on this forum correctly, you need to have your safety test and assessment carried out by an NRTL. Again, the common parentage of the standards make a one-stop assessment fairly straightforward. The only issue is that the IEC report needs to be in the prescribed format for the CB scheme, and you have to pay extra to BEAB to ratify the report. 3. I believe that you will need to conform to the relevant Ethernet or USB protocols for your device to work universally with these interfaces. There are certainly standards for USB 1.0 and 2.0, presumably also similar for Ethernet. Best regards, Neil R. Barker Compliance Engineering Manager e2v technologies ltd Waterhouse Lane Chelmsford Essex CM1 2QU U.K. Tel: +44 (01245) 453616 Fax: +44 (01245) 453410 E-mail: neil.bar...@e2vtechnologies.com > -Original Message- > From: Alex McNeil [mailto:alex.mcn...@ingenicofortronic.com] > Sent: 10 September 2003 15:20 > To: 'EMC-PSTC (E-mail)' > Subject: ITE Approvals Matrix (for small low power products) > > > > Hi Group, > > May I first of all thank all of you who contributed to my > query. As always I > got a very comprehensive response from obviously a very > experienced and > talented bunch. I have also contributed more information through other > sources. I have to admit that I did not realise the > complexity of getting, > what looks like a simple ITE product, Approved for worldwide useage. > > I have attached the Matrix, duly modified. There are still a > few oustanding > items and it is never too late for someone to try and provide more > information. I feel this document will require several modifications, > including a back-up text to further explain the applicable > standards dates, > before it is considered complete but lets see what > transpires. If you have > any disagreements with the updated Matrix, please feel free > to contact me. > Eventually, I am sure the Matrix will help many members of this group. > > Further Questions > 1. It seems it would be better to have the products tested > against CISPR22 > Class B as this would cover all the countries, particularly > the ones listed > on this Matrix, one stop test and fee (Countries are Self > Declaration or > Verification)? > 2. Similarly, it would seem that it would be better to have > the products > tested against IEC60950 with the Country deviations and > obtain a CB Report, > as this would cover all the countries, particularly the ones > listed on this > Matrix, one stop test and fee! For USA/Canada I could use > this CB Report to > help gain UL/CSA 60950? > 3. No Ethernet nor USB standards to meet (Regulatory or > non-Regulatory)? > > Notes: > I decided to leave out the various dates from the Matrix so > that I could > simplify it for my Quality Group (I will have the information > and it will be > myself who will need to get the Approvals actioned anyhow!). > > > > > Kind Regards > Alex McNeil > Principal Engineer > Tel: +44 (0)131 479 8375 > Fax: +44 (0)131 479 8321 > email: alex.mcn...@ingenicofortronic.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: emc_p...@symbol.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
ITE Approvals Matrix (for small low power products)
This is a multi-part message in MIME format. Hi Group, May I first of all thank all of you who contributed to my query. As always I got a very comprehensive response from obviously a very experienced and talented bunch. I have also contributed more information through other sources. I have to admit that I did not realise the complexity of getting, what looks like a simple ITE product, Approved for worldwide useage. I have attached the Matrix, duly modified. There are still a few oustanding items and it is never too late for someone to try and provide more information. I feel this document will require several modifications, including a back-up text to further explain the applicable standards dates, before it is considered complete but lets see what transpires. If you have any disagreements with the updated Matrix, please feel free to contact me. Eventually, I am sure the Matrix will help many members of this group. Further Questions 1. It seems it would be better to have the products tested against CISPR22 Class B as this would cover all the countries, particularly the ones listed on this Matrix, one stop test and fee (Countries are Self Declaration or Verification)? 2. Similarly, it would seem that it would be better to have the products tested against IEC60950 with the Country deviations and obtain a CB Report, as this would cover all the countries, particularly the ones listed on this Matrix, one stop test and fee! For USA/Canada I could use this CB Report to help gain UL/CSA 60950? 3. No Ethernet nor USB standards to meet (Regulatory or non-Regulatory)? Notes: I decided to leave out the various dates from the Matrix so that I could simplify it for my Quality Group (I will have the information and it will be myself who will need to get the Approvals actioned anyhow!). Kind Regards Alex McNeil Principal Engineer Tel: +44 (0)131 479 8375 Fax: +44 (0)131 479 8321 email: alex.mcn...@ingenicofortronic.com Title: ITE Approvals Matrix (for small low power products) Hi Group, May I first of all thank all of you who contributed to my query. As always I got a very comprehensive response from obviously a very experienced and talented bunch. I have also contributed more information through other sources. I have to admit that I did not realise the complexity of getting, what looks like a simple ITE product, Approved for worldwide useage. I have attached the Matrix, duly modified. There are still a few oustanding items and it is never too late for someone to try and provide more information. I feel this document will require several modifications, including a back-up text to further explain the applicable standards dates, before it is considered complete but lets see what transpires. If you have any disagreements with the updated Matrix, please feel free to contact me. Eventually, I am sure the Matrix will help many members of this group. Further Questions 1. It seems it would be better to have the products tested against CISPR22 Class B as this would cover all the countries, particularly the ones listed on this Matrix, one stop test and fee (Countries are Self Declaration or Verification)? 2. Similarly, it would seem that it would be better to have the products tested against IEC60950 with the Country deviations and obtain a CB Report, as this would cover all the countries, particularly the ones listed on this Matrix, one stop test and fee! For USA/Canada I could use this CB Report to help gain UL/CSA 60950? 3. No Ethernet nor USB standards to meet (Regulatory or non-Regulatory)? Notes: I decided to leave out the various dates from the Matrix so that I could simplify it for my Quality Group (I will have the information and it will be myself who will need to get the Approvals actioned anyhow!). Kind Regards Alex McNeil Principal Engineer Tel: +44 (0)131 479 8375 Fax: +44 (0)131 479 8321 email: alex.mcn...@ingenicofortronic.com Approvals Matrix_100903.xls Description: Binary data
RE: OATS NSA Measurements
If you plan on doing any final emissions testing at 3 meters, then the answer is yes. Have fun. Bill From: jim.hulb...@pb.com [mailto:jim.hulb...@pb.com] Sent: Tuesday, September 09, 2003 9:58 AM To: emc-p...@majordomo.ieee.org Subject: OATS NSA Measurements If a weather-protected OATS complies with volumetric NSA criteria at the 10 meter measurement distance using broadband antennas, is it necessary to repeat volumetric NSA measurements at the 3 meter distance? Jim Hulbert Pitney Bowes
