SV: FCC part 15 vs TBR21
Alex, Check this one http://www.cclab.com/europe/tbr21.htm They might help you. Best regards Amund Westin, Oslo, NORWAY -Opprinnelig melding- Fra: owner-emc-p...@majordomo.ieee.org [mailto:owner-emc-p...@majordomo.ieee.org]På vegne av Alex McNeil Sendt: 19. juni 2002 08:08 Til: emc-p...@majordomo.ieee.org Emne: FCC part 15 vs TBR21 Greetings, I wish to market a North American ITE product in Italy based on the product already approved to: * FCC Part 15 Class A (EMC) * FCC Part 68 (Analogue modem, PSTN) I know I have to CE mark the product, so I intend to: * Review the FCC part 15 emissions report and determine if I need to re-test for EN55022 Class A (I want to cut down unnecessary costs) * Test for EN55024 * Test for EN60950 For the PSTN analogue modems I am not so sure: FCC Part 68 vs CTR21 (TBR21)? Can anyone offer some advice here? I assume if the product meets CTR21 then the modem should function OK in Italy? Does Italy have other modem details that I should know about? I would appreciate comments on all ar parts of the above. ps. thanks for all the help I have received in the past from this forum! 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: 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: Transient Voltage Suppressor - Europe approvals?
All: You are correct, but this is generally due to the cost of the TVS diode and the MOV, not the capability. Dave -Original Message- From: owner-emc-p...@majordomo.ieee.org [mailto:owner-emc-p...@majordomo.ieee.org]On Behalf Of Peters, Michael Sent: Wednesday, June 19, 2002 1:51 PM To: Peters, Michael; 'emc-p...@majordomo.ieee.org' Subject: RE: Transient Voltage Suppressor - Europe approvals? I want to thank all those who replied for their responses. We have a lot to think over. To answer questions posed: The concept is to find an alternative to MOVs for surge protection. The attraction to the Transient Voltage Suppressors is their reliability and current clamping characteristics. General Semiconductor (now Vishay) does have a few mains rated, UL approved TVSs. They are rated to 120 VAC which doesn't make them useful for European voltages. The engineer I spoke with for Vishay informed me that they are contemplating UL approvals for their 400 and 440 TVSs up to those voltages. Based on the response, TVSs do not appear to be a popular method of transient protection on the power line. Thanks again, Michael Peters -Original Message- From: Peters, Michael Sent: Wednesday, June 19, 2002 9:33 AM To: 'emc-p...@majordomo.ieee.org' Subject: Transient Voltage Suppressor - Europe approvals? Greetings, Is anyone aware of Transient Voltage Suppressors (General Semiconductor calls them TransZorbs) with any European safety approvals (Semko, Demko, VDE, etc.,)? They would need to be rated for mains voltage. Thanks, Michael Peters --- 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 --- 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: Two Questions concerning the subject of Laser Safety
Chris, As I recall Laser Notice 50 does not exempt you from the record keeping and report of the CFR 21, only the qualification aspects. Regards, Josh -Original Message- From: Chris Maxwell [mailto:chris.maxw...@nettest.com] Sent: Wednesday, June 19, 2002 1:24 PM To: John Juhasz; Davis, Mike; Emc-Pstc (E-mail) Subject: RE: Two Questions concerning the subject of Laser Safety As a follow up to John's reply below: If you are considering taking some kind of class or hiring a consultant for laser safety; you may want to consider buying a copy of the latest version of EN 60825-1. The standard is very thorough, providing methods to determine the class of laser devices either by measurement or calculation. It also has tables of requirements for labeling, manual information, interlocking...requirements for different classes of lasers. The good thing is, the CDRH has issued Laser Notice 50 which essentially states that you can use EN 60825-1 to meet the technical aspects (laser classification, labeling...) of the CDRH requirements. This greatly simplifies the technical aspects of laser compliance. It also means that your copy of EN 60825 will help you with foreign and US laser safety compliance. Chris Maxwell | Design Engineer - Optical Division email chris.maxw...@nettest.com | dir +1 315 266 5128 | fax +1 315 797 8024 NetTest | 6 Rhoads Drive, Utica, NY 13502 | USA web www.nettest.com | tel +1 315 797 4449 | -Original Message- From: John Juhasz [SMTP:john.juh...@ge-interlogix.com] Sent: Wednesday, June 19, 2002 12:57 PM To: 'Davis, Mike'; Emc-Pstc (E-mail) Subject: RE: Two Questions concerning the subject of Laser Safety Mike, Go to the following link of the CDRH (Center for Devices and Radiological Health). They're the ones to whom the reports will be sent. There are further links to information that will be very useful to you and should answer most of the questions you posed below. http://www.fda.gov/cdrh/radhlth/index.html Simply put, at this moment in the US LEDs are not regulated. But the CDRH will be aligning the regs with Europe (EN 60825) where verification that the LEDs are safe is required. GE Interlogix John A. Juhasz Fiber Options Div. Bohemia, NY --- 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: Transient Voltage Suppressor - Europe approvals?
I want to thank all those who replied for their responses. We have a lot to think over. To answer questions posed: The concept is to find an alternative to MOVs for surge protection. The attraction to the Transient Voltage Suppressors is their reliability and current clamping characteristics. General Semiconductor (now Vishay) does have a few mains rated, UL approved TVSs. They are rated to 120 VAC which doesn't make them useful for European voltages. The engineer I spoke with for Vishay informed me that they are contemplating UL approvals for their 400 and 440 TVSs up to those voltages. Based on the response, TVSs do not appear to be a popular method of transient protection on the power line. Thanks again, Michael Peters -Original Message- From: Peters, Michael Sent: Wednesday, June 19, 2002 9:33 AM To: 'emc-p...@majordomo.ieee.org' Subject: Transient Voltage Suppressor - Europe approvals? Greetings, Is anyone aware of Transient Voltage Suppressors (General Semiconductor calls them TransZorbs) with any European safety approvals (Semko, Demko, VDE, etc.,)? They would need to be rated for mains voltage. Thanks, Michael Peters --- 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: Two Questions concerning the subject of Laser Safety
As a follow up to John's reply below: If you are considering taking some kind of class or hiring a consultant for laser safety; you may want to consider buying a copy of the latest version of EN 60825-1. The standard is very thorough, providing methods to determine the class of laser devices either by measurement or calculation. It also has tables of requirements for labeling, manual information, interlocking...requirements for different classes of lasers. The good thing is, the CDRH has issued Laser Notice 50 which essentially states that you can use EN 60825-1 to meet the technical aspects (laser classification, labeling...) of the CDRH requirements. This greatly simplifies the technical aspects of laser compliance. It also means that your copy of EN 60825 will help you with foreign and US laser safety compliance. Chris Maxwell | Design Engineer - Optical Division email chris.maxw...@nettest.com | dir +1 315 266 5128 | fax +1 315 797 8024 NetTest | 6 Rhoads Drive, Utica, NY 13502 | USA web www.nettest.com | tel +1 315 797 4449 | -Original Message- From: John Juhasz [SMTP:john.juh...@ge-interlogix.com] Sent: Wednesday, June 19, 2002 12:57 PM To: 'Davis, Mike'; Emc-Pstc (E-mail) Subject: RE: Two Questions concerning the subject of Laser Safety Mike, Go to the following link of the CDRH (Center for Devices and Radiological Health). They're the ones to whom the reports will be sent. There are further links to information that will be very useful to you and should answer most of the questions you posed below. http://www.fda.gov/cdrh/radhlth/index.html Simply put, at this moment in the US LEDs are not regulated. But the CDRH will be aligning the regs with Europe (EN 60825) where verification that the LEDs are safe is required. GE Interlogix John A. Juhasz Fiber Options Div. Bohemia, NY --- 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: Hipot test at production - requirements for tester
500 VA (and greater) is used for TYPE TESTING only. Any kind of breakdown that pulls more than 5 mA is potentially lethal and non-compliant. There is good reason for limiting the EOL hot-pot current (dynamically - or even with a trip) as low as possible. Best regards Gregg Gregg Kervill DipIM, MIMgt, MIEEE VP Engineering Test4Safety.com Inc PO Box 310, Reedville, VA 22539. USA Phone ( 804) 453-3141 Fax(804) 453-9039 --Original Message- -From: owner-emc-p...@majordomo.ieee.org -[mailto:owner-emc-p...@majordomo.ieee.org]On Behalf Of Pierre SELVA -Sent: Wednesday, June 19, 2002 11:03 AM -To: Forum Safety-emc -Subject: Hipot test at production - requirements for tester - - - -Hi all, - -What is the requirement for the hipot tester used at the end of the -production line, regarding its transformer apparent power ? -For UL and other agencies, do I need a 500 VA tester, or is a -50VA tester OK -? - -Thanks for your answer. - -Pierre - - -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
Line-ground MOV's
Greetings, To meet immunity requirements I will get a line filter which will include three line-ground MOV's, (275V). To my opinion this may be a safety issue due to the danger to increase the leakage current especially after an overload of the MOV's. Am I in the right or is this not an issue regarding the Low Voltage Directive? Joachim Lohr ASTeX GmbH Tel.: ++49 30 464 003 19 jl...@astex.mksinst.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 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: Transient Voltage Suppressor - Europe approvals?
Chris, Not sure what you may be experiencingas far as I know the site is public access. Another way to get there: 1) go to the UL homepage www.ul.com 2) select the link titled certifications on the left hand side of the page 3) use the keyword search or other tools available. Regards, Kaz -Original Message- From: Chris Maxwell [mailto:chris.maxw...@nettest.com] Sent: Wednesday, June 19, 2002 1:37 PM To: kazimier_gawrzy...@exchange.dell.com; mpet...@analogic.com; emc-p...@majordomo.ieee.org Subject: RE: Transient Voltage Suppressor - Europe approvals? Kazimier, I tried the website in your reply below and got You are not authorized to view this site. Is there some kind of login method that must be used? Chris Maxwell | Design Engineer - Optical Division email chris.maxw...@nettest.com | dir +1 315 266 5128 | fax +1 315 797 8024 NetTest | 6 Rhoads Drive, Utica, NY 13502 | USA web www.nettest.com | tel +1 315 797 4449 | -Original Message- From: kazimier_gawrzy...@dell.com [SMTP:kazimier_gawrzy...@dell.com] Sent: Wednesday, June 19, 2002 12:44 PM To: mpet...@analogic.com; emc-p...@majordomo.ieee.org Subject: RE: Transient Voltage Suppressor - Europe approvals? Michael, No ready to go answer for you but a suggestion as to finding a supplier. Pick some company names off the UL Certifications on-line directory and search the web for their sites...might be product offerings with European approvals as well as North American. Go to the link below and plant TVSS (or other useful find term) under the keyword search. http://database.ul.com/cgi-bin/XYV/template/LISEXT/1FRAME/index.htm Thompson Registry might be another source of company names. Regards, Kaz Gawrzyjal Dell Computer Corp. --- 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: Transient Voltage Suppressor - Europe approvals?
JPR: But remember Energy is the factor of Current, Voltage, and Time. From a protection stand-point, TVS components divert currents and clamp voltages. It is for this reason that they are used in the circuit, system. Of course for best results lower clamping voltage is desired. If the current is the same and the waveform the same, the voltage for a TVS diode is lower the energy is also lower, but who cares at least the circuit/system is protected. Dave -Original Message- From: j...@aol.com [mailto:j...@aol.com] Sent: Wednesday, June 19, 2002 11:08 AM To: hutch...@protek-tvs.com; robert_wil...@tirsys.com; mpet...@analogic.com; emc-p...@majordomo.ieee.org Subject: Re: Transient Voltage Suppressor - Europe approvals? In a message dated 6/19/2002, Dave Hutchins writes: Energy has nothing to do with the capability of the TVS device. It is also proven that the energy in the transient threat is not the energy dissipated in the TVS component, just ask any old timer even those at Harris. Hi Dave: I'm not sure I agree with you on this one, but perhaps the issue is simply one of semantics. The energy I referred to was the energy in the surge, not the protection device. For example, a gas tube can handle, without damage, surges of far higher energy than a Transzorb. If I recall correctly, MOVs can also typically handle surges of higher energy than a Transzorb. In the past, when I have used a Transzorb or comparable device, it was for tertiary protection inside a circuit that was already protected by other devices with the ability to handle much higher energy surges. Joe Randolph Telecom Design Consultant Randolph Telecom, Inc. 781-721-2848 http://www.randolph-telecom.com
RE: Transient Voltage Suppressor - Europe approvals?
Kazimier, I tried the website in your reply below and got You are not authorized to view this site. Is there some kind of login method that must be used? Chris Maxwell | Design Engineer - Optical Division email chris.maxw...@nettest.com | dir +1 315 266 5128 | fax +1 315 797 8024 NetTest | 6 Rhoads Drive, Utica, NY 13502 | USA web www.nettest.com | tel +1 315 797 4449 | -Original Message- From: kazimier_gawrzy...@dell.com [SMTP:kazimier_gawrzy...@dell.com] Sent: Wednesday, June 19, 2002 12:44 PM To: mpet...@analogic.com; emc-p...@majordomo.ieee.org Subject: RE: Transient Voltage Suppressor - Europe approvals? Michael, No ready to go answer for you but a suggestion as to finding a supplier. Pick some company names off the UL Certifications on-line directory and search the web for their sites...might be product offerings with European approvals as well as North American. Go to the link below and plant TVSS (or other useful find term) under the keyword search. http://database.ul.com/cgi-bin/XYV/template/LISEXT/1FRAME/index.htm Thompson Registry might be another source of company names. Regards, Kaz Gawrzyjal Dell Computer Corp. --- 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
CE (LVD) for Fruit Juicers
Hi Group, Looking through the OJEC LVD Standards list, I could not find under EN 60335 and its many parts a particular part that covered a juicer. Does anyone know which particular part of this standard this product falls under? Also, not having seen this device, if it has blades like a blender, will the Machinery Directive also be applicable? Thanks for sharing your knowledge. Sincerely, Robert R. Loop Engineering Supervisor - Product Safety ph: (256) 837-4411 x313 fax:(256) 721-0144 email: rl...@hnt.wylelabs.com This email transmission is confidential and intended for the addressee only. It may contain privileged and confidential information. If you are not the person or organization to whom it is addressed, you must not copy, distribute, or take any action in reliance upon 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 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: Transient Voltage Suppressor - Europe approvals?
In a message dated 6/19/2002, Dave Hutchins writes: Energy has nothing to do with the capability of the TVS device. It is also proven that the energy in the transient threat is not the energy dissipated in the TVS component, just ask any old timer even those at Harris. Hi Dave: I'm not sure I agree with you on this one, but perhaps the issue is simply one of semantics. The energy I referred to was the energy in the surge, not the protection device. For example, a gas tube can handle, without damage, surges of far higher energy than a Transzorb. If I recall correctly, MOVs can also typically handle surges of higher energy than a Transzorb. In the past, when I have used a Transzorb or comparable device, it was for tertiary protection inside a circuit that was already protected by other devices with the ability to handle much higher energy surges. Joe Randolph Telecom Design Consultant Randolph Telecom, Inc. 781-721-2848 http://www.randolph-telecom.com
RE: Transient Voltage Suppressor - Europe approvals?
Hello: The question is not the energy handling capability, it is a matter of cost. You can purchase a TVS diode that has the same energy handling capability of the MOV, but the cost is much different. By the way, energy is not a good measure of the capability of a TVS component. The TransZorb has a lower clamping voltage than an MOV for the same peak pulse current and waveform. Therefore the calculated energy is lower in the TransZorb. Energy has nothing to do with the capability of the TVS device. It is also proven that the energy in the transient threat is not the energy dissipated in the TVS component, just ask any old timer even those at Harris. Dave -Original Message- From: owner-emc-p...@majordomo.ieee.org [mailto:owner-emc-p...@majordomo.ieee.org]On Behalf Of j...@aol.com Sent: Wednesday, June 19, 2002 9:51 AM To: robert_wil...@tirsys.com; mpet...@analogic.com; emc-p...@majordomo.ieee.org Subject: Re: Transient Voltage Suppressor - Europe approvals? In a message dated 6/19/2002, Bob Wilson writes: Transzorbs (or TVSs) are basically zener diodes that are rated for their energy absorption capability. Hello All: One thing to keep in mind is that the energy handling capability of a TransZorb is generally not very high compared to other devices such as gas tubes, MOV's, and sidactors. Michael, your original posting did not specify the intended application, but the reference to being rated for mains voltage makes me wonder if you are trying to protect from surges on an AC mains input. If so, I do not think that a TransZorb would have adequate energy handling capability. Joe Randolph Telecom Design Consultant Randolph Telecom, Inc. 781-721-2848 http://www.randolph-telecom.com
RE: Two Questions concerning the subject of Laser Safety
Mike - See below. Regards, Peter L. Tarver, PE Product Safety Manager Sanmina-SCI Homologation Services San Jose, CA peter.tar...@sanmina-sci.com -Original Message- From: Davis, Mike Sent: Wednesday, June 19, 2002 6:59 AM 1.Are manufacturers required by the FDA to record serial numbers of Laser modules. Where is this requirement located? Does this apply to photodiodes also? A) Not in so few words. The requirements imply the need for a tracking method by way of a QC program, but nothing is specifically identified. Also, if there's a field incident, traceability to a manufacturing lot would likely become an issue, especially if the field incident is serious enough to warrant a recall (you would, no doubt, prefer to recall only some modules from the field, rather than all of them). S/Ns are the most common method I've seen used for this. B) photodiodes are not controlled by the FDA; neither are noncoherent LED sources 2.I have a concern of what I need to know about Laser safety but was afraid to ask (because it would cost more than my compliance budget ($0) would allow without manager approval). In other words (what is the second question?... I am getting there.) I am looking to hire a consultant or take a course. My supervisor wants me to create for him a proposal answering the type of questions that support the need to either attend a course or have a consultant educate me or our professionals here so that he can decide whether or not we need to hire a consultant, etc, etc. To keep this short, I will paraphrase by saying that the type of questions he would like to have answered is it worth the expense to getting smart, as engineers and a manufacturer of ITE, in the manufacturing of laser systems? I believe it's worth getting smart. I recommend (you just missed the last one): International Laser Safety Conference March 10-13, 2003 Jacksonville, FL http://www.laserinstitute.org/conferences/ilsc2003/index2003 .htm Here is my question... Is there information available that summarizes the responsibilities to Laser Safety of Compliance, Design, Manufacturing, and Test Engineers that manufacture laser systems? Refer to 21CFR and the CDRH web site for all of this. You'll find copies of the initial and annual reports and links to 21CFR. Some of the information you want is in early sections of Section 1040 (1040.01, .02) so don't ignore them and only review 1040.10. http://www.fda.gov/cdrh/ --- 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: Transient Voltage Suppressor - Europe approvals?
Michael: I worked at General Semiconductor for about 25 years. I do not know of any specific component safety standard for TVS diode components. The one that we, when at General Semiconductor, had to meet was the UL 497B for telecommunications. Generally, there is no safety standard for individual components. It depends on how they are connected in the circuit and their location, that is for creepage and clearance distances. These components are used on AC power, DC power and data lines. Their selection depends upon specific applications and the peak pulse current and waveform. These two conditions are the only threat conditions that are important. But it is location of the device in the circuit or system that might cause of concern for safety. Dave -Original Message- From: owner-emc-p...@majordomo.ieee.org [mailto:owner-emc-p...@majordomo.ieee.org]On Behalf Of Peters, Michael Sent: Wednesday, June 19, 2002 6:33 AM To: 'emc-p...@majordomo.ieee.org' Subject: Transient Voltage Suppressor - Europe approvals? Greetings, Is anyone aware of Transient Voltage Suppressors (General Semiconductor calls them TransZorbs) with any European safety approvals (Semko, Demko, VDE, etc.,)? They would need to be rated for mains voltage. Thanks, Michael Peters --- 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: Transient Voltage Suppressor - Europe approvals?
Agreed. But not all the devices you mention operate in the same way. In particular, Sidactors get their high apparent energy absorption because they crowbar the line being protected, to relatively near ground potential. They are basically energy-rated bidirectional breakover diodes (acting like self-triggered triacs). Thus, although the device handles high spike current, the voltage across it is very low during this period (thus power dissipation in the device is much lower). Devices operating off the AC line being protected by a sidactor, will see an interruption in their power supply (the AC line), as a result of the sidactor clamping it to near-zero volts. Because of the Sidactor's crowbar action, it is not likely acceptable as a normal AC line protection device (they are more commonly used to protect data and telecom lines). A transzorb or a MOV simply limits the rise of voltage to a small increment ABOVE nominal line voltage, hence the power dissipation will be much higher than with a Sidactor. But the benefit is that devices operating from the protected AC line will see no interruption in their power when a hit occurs. Bob Wilson TIR Systems Ltd. Vancouver. -Original Message- From: j...@aol.com [mailto:j...@aol.com] Sent: June 19, 2002 9:51 AM To: Robert Wilson; mpet...@analogic.com; emc-p...@majordomo.ieee.org Subject: Re: Transient Voltage Suppressor - Europe approvals? In a message dated 6/19/2002, Bob Wilson writes: Transzorbs (or TVSs) are basically zener diodes that are rated for their energy absorption capability. Hello All: One thing to keep in mind is that the energy handling capability of a TransZorb is generally not very high compared to other devices such as gas tubes, MOV's, and sidactors. Michael, your original posting did not specify the intended application, but the reference to being rated for mains voltage makes me wonder if you are trying to protect from surges on an AC mains input. If so, I do not think that a TransZorb would have adequate energy handling capability. Joe Randolph Telecom Design Consultant Randolph Telecom, Inc. 781-721-2848 http://www.randolph-telecom.com
Re: Lightning Protection for PA System
Scott, Not knowing how your system is exactly built makes it difficult to second guess the lightning. However, here is one way to protect your amplifiers: Move the protection interface out to the edge of your building. Use rod located there with all referenced to ground. At this same location use a 10A AC mains line filter between the amplifier and the speakers (cheap filtering which should be able to pass the audio) with AC line towards amp and load towards speakers. Between filter and speakers place fusing in series (won't do much for truly high voltage which will jump, but will take care of a lot of nuisance discharges) place gas discharge tubes there. [ If you can get a surplus telephone entry block, the type with the carbon shorts, they work great here, too. ] Back side of filter place tranzorbs, then back at amp place more tranzorbs. You prevent lightning damage by designing a filtering system which limits the maximum amplitude that can get into your electronics. And the most effective rejection filter is always high impedance in series, low impedance to ground, high impedance in series and low impedance to ground, ad nauseum. Just make multiple paths that do this and you can even sustain a direct hit. Speakers and wires will probably fry though. - Robert - Robert A. Macy, PEm...@california.com 408 286 3985 fx 408 297 9121 AJM International Electronics Consultants 619 North First St, San Jose, CA 95112 -Original Message- From: Scott Lacey sco...@world.std.com To: emc-p...@majordomo.ieee.org emc-p...@majordomo.ieee.org List-Post: emc-pstc@listserv.ieee.org Date: Saturday, June 15, 2002 9:19 AM Subject: Lightning Protection for PA System To the group, I am seeking advice as to the best methods of protecting a Public Address system against recurring lightning damage. The system uses several commercial PA amplifiers, each driving several speakers at indoor and outdoor locations. There are also several locations where microphones can be plugged in. The longest speaker wires may be up to 250 yards long. It is believed that the charge is being coupled to the speaker wires where it then returns to ground at the amplifier location within the building, destroying the solid state devices within the amplifier. A technician has added fuses to all external microphone inputs and speaker outputs. While these have blown several times during storms without obvious damage to the amplifiers it is my belief that fuses are generally too slow to protect semiconductor devices. I am seeking advice as to surge suppression devices. System particulars are as follows: 1) The PA amplifiers have 70 volt outputs. All speakers are transformer coupled. 2) All microphones use standard XLR connectors. They plug into metallic conduit mounted jacks at locations inside and outside the building. The outside microphones are unplugged during storms. 3) The amplifiers are located on the second floor of the building. Each amplifier is dedicated to a set of speakers at one location. The amplifier driving the longest wires is the one which most often has to be replaced. 4) The building is in a location known to be susceptible to lightning activity. Electrical appliances have been destroyed on at least two occasions. 5) All protective grounding efforts to date have been made to the conduit. I am recommending that this be supplemented by driven rods. It is pretty easy to buy commercial surge suppression devices for the ac lines. I feel I need advice as to the best methods to protect the audio inputs and outputs. For the 70 volt outputs I am thinking of using gas tubes to earth where the wires enter the building supplemented by MOV, Tranzorb, or other devices near the amplifier location. I welcome suggestions as to device types. For the microphone inputs I am thinking of using semiconductor transient voltage suppressors near the amplifier. Again, any suggestions are welcome. Thanks in advance for any advice and guidance. Scott Lacey sco...@world.std.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 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: FCC part 68 vs CTR21
Alex, In our (painful) experience of transfering a product from the US to Europe, the main sources of FCC Part 68 vs. TBR21 compliance problems have been: 1) TBR21 Subclause 4.7.1 - DC Characteristics Equipment designed for sale in the US is not likely to comply with the 60mA current limit requirement in this subclause of TBR21. 2) TBR21 Subclause 4.7.2 - Impedance Depending on the actual design solution, the return loss limits of this subclause may or may not be a problem. Hope this helps. Victor P.S. I wanted to include some links and a coment on the RTTE directive and TBR21, but Ron Pickard beat me to 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 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: Two Questions concerning the subject of Laser Safety
Mike, Go to the following link of the CDRH (Center for Devices and Radiological Health). They're the ones to whom the reports will be sent. There are further links to information that will be very useful to you and should answer most of the questions you posed below. http://www.fda.gov/cdrh/radhlth/index.html Simply put, at this moment in the US LEDs are not regulated. But the CDRH will be aligning the regs with Europe (EN 60825) where verification that the LEDs are safe is required. GE Interlogix John A. Juhasz Fiber Options Div. Bohemia, NY -Original Message- From: Davis, Mike [mailto:mda...@c-cor.net] Sent: Wednesday, June 19, 2002 9:59 AM To: Emc-Pstc (E-mail) Subject: Two Questions concerning the subject of Laser Safety 1.Are manufacturers required by the FDA to record serial numbers of Laser modules. Where is this requirement located? Does this apply to photodiodes also? 2.I have a concern of what I need to know about Laser safety but was afraid to ask (because it would cost more than my compliance budget ($0) would allow without manager approval). In other words (what is the second question?... I am getting there.) I am looking to hire a consultant or take a course. My supervisor wants me to create for him a proposal answering the type of questions that support the need to either attend a course or have a consultant educate me or our professionals here so that he can decide whether or not we need to hire a consultant, etc, etc. To keep this short, I will paraphrase by saying that the type of questions he would like to have answered is it worth the expense to getting smart, as engineers and a manufacturer of ITE, in the manufacturing of laser systems? Here is my question... Is there information available that summarizes the responsibilities to Laser Safety of Compliance, Design, Manufacturing, and Test Engineers that manufacture laser systems? You may respond either on or off line. Thanks in Advance! Michael S. Davis Compliance Engineer C-C0R.net Tel: 203.630.5788 Fax: 203.630.5762 mike.da...@c-cor.net --- 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: Transient Voltage Suppressor - Europe approvals?
In a message dated 6/19/2002, Bob Wilson writes: Transzorbs (or TVSs) are basically zener diodes that are rated for their energy absorption capability. Hello All: One thing to keep in mind is that the energy handling capability of a TransZorb is generally not very high compared to other devices such as gas tubes, MOV's, and sidactors. Michael, your original posting did not specify the intended application, but the reference to being rated for mains voltage makes me wonder if you are trying to protect from surges on an AC mains input. If so, I do not think that a TransZorb would have adequate energy handling capability. Joe Randolph Telecom Design Consultant Randolph Telecom, Inc. 781-721-2848 http://www.randolph-telecom.com
Re:Transient Voltage Suppressor - Europe approvals?
Michael, I maters if you are trying to place suppressors across the line or from line to chassis. Here is a copy of something you might find useful. Brian Kunde LECO Corp. Transient Suppressors according to EN60950 CCA doc section 1.5 ACROSS THE MAINS Transient suppressors can be connected across the mains if it is separately approved to IEC 1051-1 and IEC 1051-2 (or CECC 42200). If it is not separately approved, then a short-circuit protective device (such as a fuse) is required. BETWEEN LINE AND GROUND (PE) It is NOT recommended that Transient suppressor are used between Line and Ground due to the many safety issue it generates: varistors has the tendency to generate excessive leakage current within a few years of use, and a varistor from line to ground will cause a false production High Pot test failure. Transient suppressors can only be connected from Line to Ground (Protective Earth) on pluggable equipment if a gas tube and fuse is in series with the varistor (transient suppressing device). To solve the High Pot problem, some companies install a special screw in the back on the unit that opens the ground connection to the transient suppressing device when the screw is removed. If this approach is taken, it must be well documented in the User's documentation. Surge Suppressors are allowed from line to ground on Permanently connected equipment. Reply Separator Subject:Transient Voltage Suppressor - Europe approvals? Author: mpet...@analogic.com List-Post: emc-pstc@listserv.ieee.org Date: 6/19/02 9:50 AM Greetings, Is anyone aware of Transient Voltage Suppressors (General Semiconductor calls them TransZorbs) with any European safety approvals (Semko, Demko, VDE, etc.,)? They would need to be rated for mains voltage. Thanks, Michael Peters --- 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: Transient Voltage Suppressor - Europe approvals?
Michael, No ready to go answer for you but a suggestion as to finding a supplier. Pick some company names off the UL Certifications on-line directory and search the web for their sites...might be product offerings with European approvals as well as North American. Go to the link below and plant TVSS (or other useful find term) under the keyword search. http://database.ul.com/cgi-bin/XYV/template/LISEXT/1FRAME/index.htm Thompson Registry might be another source of company names. Regards, Kaz Gawrzyjal Dell Computer Corp. -Original Message- From: Peters, Michael [mailto:mpet...@analogic.com] Sent: Wednesday, June 19, 2002 8:33 AM To: 'emc-p...@majordomo.ieee.org' Subject: Transient Voltage Suppressor - Europe approvals? Greetings, Is anyone aware of Transient Voltage Suppressors (General Semiconductor calls them TransZorbs) with any European safety approvals (Semko, Demko, VDE, etc.,)? They would need to be rated for mains voltage. Thanks, Michael Peters --- 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: FCC part 68 vs CTR21
In a message dated 6/19/2002, Alex McNeil writes: For the PSTN analogue modems I am not so sure: FCC Part 68 vs CTR21 (TBR21)? Can anyone offer some advice here? I assume if the product meets CTR21 then the modem should function OK in Italy? Does Italy have other modem details that I should know about? Hi Alex: If you modem was not designed to meet CTR 21, it will probably fail the CTR 21 tests for current limiting and for transient response. Fortunately, CTR 21 is no longer a mandatory requirement under the RTTE directive. The main regulatory requirements that apply are those for safety and EMC. Regarding general compatibility with the Italian network, keep in mind that dial tone in Italy is cadenced, so your North American dial tone detector may not properly detect it. As far as the other parameters are concerned, it is hard to say with certainty without reviewing the actual design. Since FCC Part 68 is a harms-based standard, the tests are only intended to show that the equipment will not harm the public network. It is not necessary for the equipment to actually function at all, even on the North American network. That being said, I do think that a well designed modem intended for North America is likely to operate reasonably well on the Italian network, provided that the cadenced dial tone does not present a problem. Joe Randolph Telecom Design Consultant Randolph Telecom, Inc. 781-721-2848 http://www.randolph-telecom.com
RE: Transient Voltage Suppressor - Europe approvals?
Transzorbs (or TVSs) are basically zener diodes that are rated for their energy absorption capability. Since they are polar devices (i.e. diodes) they are useless on an AC line. Well, I suppose you could put two of them back to back, but this is not at all common. Typically, these devices are used to protect lower voltage DC busses. Higher voltage (line voltage) AC lines are most commonly protected by varistors (e.g. ZnO types). Bob Wilson TIR Systems Ltd. Vancouver. -Original Message- From: Peters, Michael [mailto:mpet...@analogic.com] Sent: June 19, 2002 6:33 AM To: 'emc-p...@majordomo.ieee.org' Subject: Transient Voltage Suppressor - Europe approvals? Greetings, Is anyone aware of Transient Voltage Suppressors (General Semiconductor calls them TransZorbs) with any European safety approvals (Semko, Demko, VDE, etc.,)? They would need to be rated for mains voltage. Thanks, Michael Peters --- 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
Two Questions concerning the subject of Laser Safety
1. Are manufacturers required by the FDA to record serial numbers of Laser modules. Where is this requirement located? Does this apply to photodiodes also? 2. I have a concern of what I need to know about Laser safety but was afraid to ask (because it would cost more than my compliance budget ($0) would allow without manager approval). In other words (what is the second question?... I am getting there.) I am looking to hire a consultant or take a course. My supervisor wants me to create for him a proposal answering the type of questions that support the need to either attend a course or have a consultant educate me or our professionals here so that he can decide whether or not we need to hire a consultant, etc, etc. To keep this short, I will paraphrase by saying that the type of questions he would like to have answered is it worth the expense to getting smart, as engineers and a manufacturer of ITE, in the manufacturing of laser systems? Here is my question... Is there information available that summarizes the responsibilities to Laser Safety of Compliance, Design, Manufacturing, and Test Engineers that manufacture laser systems? You may respond either on or off line. Thanks in Advance! Michael S. Davis Compliance Engineer C-C0R.net Tel: 203.630.5788 Fax: 203.630.5762 mike.da...@c-cor.net application/ms-tnef
Transient Voltage Suppressor - Europe approvals?
Greetings, Is anyone aware of Transient Voltage Suppressors (General Semiconductor calls them TransZorbs) with any European safety approvals (Semko, Demko, VDE, etc.,)? They would need to be rated for mains voltage. Thanks, Michael Peters --- 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: FCC part 68 vs CTR21
Alex, On the FCC vs EN 55022 testing: Review the radiated emissions data. If any of the emissions from 88 MHz to 216 MHz are within 4 dB of the limit or if emissions from 216 to 230 MHz are within 7 dB of the limit, you probably fail the EN 55022 emissions requirements. Otherwise, you should not need to re-test radiated emissions. You most likely will need to re-test line-conducted for the following reasons: 1) Frequency range for EN 55022 starts at 150 kHz (FCC starts at 450 kHz) 2) You probably tested at only 120 VAC / 60 Hz. Europe testing should be done at 230 VAC /50 Hz 3) Europe requires compliance with average emissions limits. Except under certain circumstances it is unnecessary to perform average detector measurements for FCC compliance. I recommend using the same lab as FCC testing was performed, that way they can use the radiated data previously collected and create an EN 55022 report including the line-conducted data. Michael Peters -Original Message- From: Alex McNeil [mailto:alex.mcn...@ingenicofortronic.com] Sent: Wednesday, June 19, 2002 5:55 AM To: Alex McNeil; emc-p...@majordomo.ieee.org Subject: FCC part 68 vs CTR21 Hi, Sorry for the deliberate(!!) mistake, the subject heading should read as above per my previous query -Original Message- From: Alex McNeil [mailto:alex.mcn...@ingenicofortronic.com] Sent: 19 June 2002 07:08 To: emc-p...@majordomo.ieee.org Subject: FCC part 15 vs TBR21 Greetings, I wish to market a North American ITE product in Italy based on the product already approved to: * FCC Part 15 Class A (EMC) * FCC Part 68 (Analogue modem, PSTN) I know I have to CE mark the product, so I intend to: * Review the FCC part 15 emissions report and determine if I need to re-test for EN55022 Class A (I want to cut down unnecessary costs) * Test for EN55024 * Test for EN60950 For the PSTN analogue modems I am not so sure: FCC Part 68 vs CTR21 (TBR21)? Can anyone offer some advice here? I assume if the product meets CTR21 then the modem should function OK in Italy? Does Italy have other modem details that I should know about? I would appreciate comments on all ar parts of the above. ps. thanks for all the help I have received in the past from this forum! 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: 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 --- 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: NIST vs. ANSI
Dear Amund, Did someone around here say the US system is easy to figure out? There are differences between ANSI and NIST. To put it as simply as possible, NIST traditionally controls weights and measures, while ANSI deals primarily with product standards. There is overlap, but the core activities are different. NIST runs programs for voluntary laboratory accreditation (such as NVLAP for EMC and telecom labs), and it also maintains the calibration standards for measurement of time, weight, distance, etc. ANSI adopts national standards but does not write them. It reviews generic and product-related standards submitted by independent and private standards organizations, then uses a consensus voting procedure to determine whether to adopt those standards as US National Standards. US National Standards are generally voluntary standards that can be used to comply with various US legal codes and regulations. ANSI also sponsors and participates in committees for international standardization and harmonization. Hope this helps. Greg Galluccio www.productapprovals.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 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
FCC part 68 vs CTR21
Hi, Sorry for the deliberate(!!) mistake, the subject heading should read as above per my previous query -Original Message- From: Alex McNeil [mailto:alex.mcn...@ingenicofortronic.com] Sent: 19 June 2002 07:08 To: emc-p...@majordomo.ieee.org Subject: FCC part 15 vs TBR21 Greetings, I wish to market a North American ITE product in Italy based on the product already approved to: * FCC Part 15 Class A (EMC) * FCC Part 68 (Analogue modem, PSTN) I know I have to CE mark the product, so I intend to: * Review the FCC part 15 emissions report and determine if I need to re-test for EN55022 Class A (I want to cut down unnecessary costs) * Test for EN55024 * Test for EN60950 For the PSTN analogue modems I am not so sure: FCC Part 68 vs CTR21 (TBR21)? Can anyone offer some advice here? I assume if the product meets CTR21 then the modem should function OK in Italy? Does Italy have other modem details that I should know about? I would appreciate comments on all ar parts of the above. ps. thanks for all the help I have received in the past from this forum! 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: 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
NIST vs. ANSI
Hi all, From the NIST and ANSI web-sites, I quote: NIST: Technology Services (TS) of the National Institute of Standards and Technology (NIST) provides U.S. industry, government, and the public with measurements, standards, and information services that promote innovation, increase competitiveness, and facilitate trade. ANSI: ANSI is a private, non-profit organization (501(c)3) that administers and coordinates the U.S. voluntary standardization and conformity assessment system. The Institute's mission is to enhance both the global competitiveness of U.S. business and the U.S. quality of life by promoting and facilitating voluntary consensus standards and conformity assessment systems, and safeguarding What are the differences between these two Institutes and what are their roles? Do both parts make EMC standards ? Thanks. Best regards Amund Westin Oslo, NORWAY --- 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
FCC part 15 vs TBR21
Greetings, I wish to market a North American ITE product in Italy based on the product already approved to: * FCC Part 15 Class A (EMC) * FCC Part 68 (Analogue modem, PSTN) I know I have to CE mark the product, so I intend to: * Review the FCC part 15 emissions report and determine if I need to re-test for EN55022 Class A (I want to cut down unnecessary costs) * Test for EN55024 * Test for EN60950 For the PSTN analogue modems I am not so sure: FCC Part 68 vs CTR21 (TBR21)? Can anyone offer some advice here? I assume if the product meets CTR21 then the modem should function OK in Italy? Does Italy have other modem details that I should know about? I would appreciate comments on all ar parts of the above. ps. thanks for all the help I have received in the past from this forum! 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: 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: ISO 9000 --- Or ISO/IEC 17025
Martin, The key issue is the competence of the testing and demonstration of compliance to both EMC and Product Safety requirements. The standard to use is ISO/IEC 17025, General Requirements for the Competence of Calibration and Testing Laboratories. This is the foundation for acceptance of testing worldwide including most mutual recognition agreements. As recognized by various goivernments and and industries as well as ISO and IEC in the Introduction to ISO/IEC 17025: Certification against ISO 9001 and ISO 9002 does not of itself demonstrate the competence of the laboratory to produce technically valid data and results. The acceptance of testing and calibration results between countries should be facilitated if laboratories comply with this International Standard and if they obtain accreditation from bodies which have entered into mutual recognition agreements with equivalent bodies in other countries using this International Standard. The use of this International Standard will facilitate cooperation between laboratories and other bodies, and assist in the exchange of information and experience, and in the harmonization of standards and procedures. Hope this helps. ISO 9000 was not the answer years ago and it still is not. Larry Gradin *** * Larry Gradin, PE, QMS-LA * Email: lgra...@integrity-solutions.org l.gra...@ieee.org * Integrity Solutions Group, Inc. * 6419 Bridgewood TerraceBoca Raton, FL 33433 USA * Phone 561-395-6007Efax: 978-285-6589 * Web Page http://www.Integrity-Solutions.org ___ Remember - Quality depends on Integrity, Attention To Detail, Cost-Effective Action, and Commitment -- not buzzwords. * - Original Message - From: marti...@appliedbiosystems.com To: emc-p...@majordomo.ieee.org Sent: Tuesday, June 18, 2002 10:23 PM Subject: ISO 9000 Greetings, Several years ago most manufacturing companies were getting evaluated to ISO 9000 standards. Since that time, there have been some revisions to the standards. Does your company still spend time and money dealing with ISO 9000 and it's revisions. If so, why. If not, why not? I realize this subject is not directly related to product safety/EMC, so, if you like, you can email me directly with your responses. All responses are appreciated. Regards Joe Martin EMC/Product Safety Engineer Applied Biosystems marti...@appliedbiosystems.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 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
ISO 9000
Greetings, Several years ago most manufacturing companies were getting evaluated to ISO 9000 standards. Since that time, there have been some revisions to the standards. Does your company still spend time and money dealing with ISO 9000 and it's revisions. If so, why. If not, why not? I realize this subject is not directly related to product safety/EMC, so, if you like, you can email me directly with your responses. All responses are appreciated. Regards Joe Martin EMC/Product Safety Engineer Applied Biosystems marti...@appliedbiosystems.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 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
