RE: Mobile Power Cart
All, I want to thank everyone for the responses. It sounds pretty straight forward now. I will be verifying the compliance of the cart with a printer in place. I will use EN 60950 for safety, EN 55022, EN 55024, EN 61000-3-2, and EN 61000-3-3 for EMC. It also appears I may be using EN 60335-2-29 to verify the charger, but I am told ( I haven't seen it yet) that it is a recognized component. Thanks again, Josh Josh Wiseman EMC/Product Safety
RE: Mobile Power Cart
Joshua - Aside from the other fine responses you've received, there are also issues related to the evolution of flammable/combustible atmospheres from the battery electrolyte during the charging cycle. Venting of the battery box (it will be in a box, won't it?) is a must to prevent a potentially explosive situation. Regards, Peter L. Tarver, PE Product Safety Manager Sanmina-SCI Homologation Services San Jose, CA peter.tar...@sanmina-sci.com -Original Message- From: Joshua Wiseman Hi all, My marketing department has decided it would be a good idea to put a printer on a battery cart. My question is what standards will I need to test to for this. The power cart will be supplied with a battery charger, 12V lead-acid battery, and a 12Vdc to 120Vac or 12Vdc to 230Vac inverter. Thanks in advance for your help, Josh --- 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: Mobile Power Cart
Peter, You are right, the standard does address movable equipment, but movable equipment is not even mentioned with regard to the stability tests of 4.1. It only uses the term relative to fire enclosure and leakage current. The stability tests are essentially unchanged since the larger computer equipment days of IEC 435 and involve only static, not dynamic testing. We had the experience of several mainframes roll over in production due to shock mounted castors on a narrow wheelbase and had to go to palletizing them during production. I'm sure this will be better addressed by the coming hazard based standard IEC is developing. Bob Johnson ITE http://www.itesafety.com/ Safety -Original Message- From: owner-emc-p...@majordomo.ieee.org [mailto:owner-emc-p...@majordomo.ieee.org] On Behalf Of Peter Merguerian Sent: Friday, October 18, 2002 5:03 AM To: 'john...@itesafety.com'; Peter Merguerian; 'Joshua Wiseman'; 'Emc-Pstc (E-mail)' Subject: RE: Mobile Power Cart Bob, You state: Note that 60950 stability requirements are intended to address equipment which is not in motion. I disagree. Parag. 1.2.3.1 of the 60950 standard defines monable equipment as one that is either - 18 kg or less in mass and not fixed, or - equipment with wheels, castors, or other means to facilitate movement by the operator as required to perform its intended use. What I think you meant to say is that the stability requirements in 60950 should be revised by the international standards community to address tipping when they encounter floor joints, elevator thresholds, etc, a special concern when battery acids may be involved. All the Best, attachment: Robert Johnson.vcf
RE: Mobile Power Cart
If the cart can be used with the battery charger in place, I would also do it to EN55014 (since, I assume, that it is basically a motor driven device). Then harmonics and flicker would apply as well. Bob Heller 3M Product Safety, 76-1-01 St. Paul, MN 55107-1208 Tel: 651- 778-6336 Fax: 651-778-6252 Joshua Wiseman jwiseman@printronix.c To: Emc-Pstc (E-mail) emc-p...@majordomo.ieee.org om cc: Sent by: Subject: RE: Mobile Power Cart owner-emc-pstc@majordo mo.ieee.org 10/17/2002 10:15 AM Please respond to Joshua Wiseman I am getting a lot of response about Safety, but I forget to say that I need to know about EMC as well. At this time my plan is to test the unit as an option with my printer in place. I plan to test to EN 55022 and EN 55024 including 61000 series, but would Harmonics and Flicker testing be of concerns as well. Again thanks for the help, Josh -Original Message- From: Joshua Wiseman [mailto:jwise...@printronix.com] Sent: Wednesday, October 16, 2002 3:39 PM To: Emc-Pstc (E-mail) Subject: Mobile Power Cart Hi all, My marketing department has decided it would be a good idea to put a printer on a battery cart. My question is what standards will I need to test to for this. The power cart will be supplied with a battery charger, 12V lead-acid battery, and a 12Vdc to 120Vac or 12Vdc to 230Vac inverter. Thanks in advance for your help, Josh --- 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: Mobile Power Cart
Bob, You state: Note that 60950 stability requirements are intended to address equipment which is not in motion. I disagree. Parag. 1.2.3.1 of the 60950 standard defines monable equipment as one that is either - 18 kg or less in mass and not fixed, or - equipment with wheels, castors, or other means to facilitate movement by the operator as required to perform its intended use. What I think you meant to say is that the stability requirements in 60950 should be revised by the international standards community to address tipping when they encounter floor joints, elevator thresholds, etc, a special concern when battery acids may be involved. All the Best, This e-mail message may contain privileged or confidential information. If you are not the intended recipient, you may not disclose, use, disseminate, distribute, copy or rely upon this message or attachment in any way. If you received this e-mail message in error, please return by forwarding the message and its attachments to the sender. PETER S. MERGUERIAN Technical Director I.T.L. (Product Testing) Ltd. 26 Hacharoshet St., POB 211 Or Yehuda 60251, Israel Tel: + 972-(0)3-5339022 Fax: + 972-(0)3-5339019 Mobile: + 972-(0)54-838175 http://www.itl.co.il http://www.itl.co.il/ http://www.i-spec.com http://www.i-spec.com/ -Original Message- From: Robert Johnson [mailto:john...@itesafety.com] Sent: Thursday, October 17, 2002 6:40 PM To: 'Peter Merguerian'; 'Joshua Wiseman'; 'Emc-Pstc (E-mail)' Subject: RE: Mobile Power Cart Note that 60950 stability requirements are intended to address equipment which is not in motion. It is inadequate to address moving carts. UL 1667 and UL 1678 are meant for that purpose. The first was in response to the deaths of children moving televisions in schools. Moving carts are prone to tipping when they encounter floor joints, elevator thresholds, etc, a special concern when battery acids may be involved. Bob Johnson ITE Safety http://www.itesafety.com/ -Original Message- From: owner-emc-p...@majordomo.ieee.org [mailto:owner-emc-p...@majordomo.ieee.org] On Behalf Of Peter Merguerian Sent: Thursday, October 17, 2002 4:16 AM To: 'Joshua Wiseman'; Emc-Pstc (E-mail) Subject: RE: Mobile Power Cart Joshua, I have NRTL Listed ITE carts to UL60950/C22.2 60950 also certified for GS under EN 60 950. You must make sure the cart complies with all the fire/electrical enclosure requirements as well as stability and sharp edges constructional requirements. If you haev additional questions, please do not hesitate to contact me. Best Regards, This e-mail message may contain privileged or confidential information. If you are not the intended recipient, you may not disclose, use, disseminate, distribute, copy or rely upon this message or attachment in any way. If you received this e-mail message in error, please return by forwarding the message and its attachments to the sender. PETER S. MERGUERIAN Technical Director I.T.L. (Product Testing) Ltd. 26 Hacharoshet St., POB 211 Or Yehuda 60251, Israel Tel: + 972-(0)3-5339022 Fax: + 972-(0)3-5339019 Mobile: + 972-(0)54-838175 http://www.itl.co.il http://www.itl.co.il/ http://www.i-spec.com http://www.i-spec.com/ -Original Message- From: Joshua Wiseman [mailto:jwise...@printronix.com] Sent: Thursday, October 17, 2002 12:39 AM To: Emc-Pstc (E-mail) Subject: Mobile Power Cart Hi all, My marketing department has decided it would be a good idea to put a printer on a battery cart. My question is what standards will I need to test to for this. The power cart will be supplied with a battery charger, 12V lead-acid battery, and a 12Vdc to 120Vac or 12Vdc to 230Vac inverter. Thanks in advance for your help, Josh
RE: Mobile Power Cart
I am getting a lot of response about Safety, but I forget to say that I need to know about EMC as well. At this time my plan is to test the unit as an option with my printer in place. I plan to test to EN 55022 and EN 55024 including 61000 series, but would Harmonics and Flicker testing be of concerns as well. Again thanks for the help, Josh -Original Message- From: Joshua Wiseman [mailto:jwise...@printronix.com] Sent: Wednesday, October 16, 2002 3:39 PM To: Emc-Pstc (E-mail) Subject: Mobile Power Cart Hi all, My marketing department has decided it would be a good idea to put a printer on a battery cart. My question is what standards will I need to test to for this. The power cart will be supplied with a battery charger, 12V lead-acid battery, and a 12Vdc to 120Vac or 12Vdc to 230Vac inverter. Thanks in advance for your help, Josh
RE: Mobile Power Cart
Joshua, I have NRTL Listed ITE carts to UL60950/C22.2 60950 also certified for GS under EN 60 950. You must make sure the cart complies with all the fire/electrical enclosure requirements as well as stability and sharp edges constructional requirements. If you haev additional questions, please do not hesitate to contact me. Best Regards, This e-mail message may contain privileged or confidential information. If you are not the intended recipient, you may not disclose, use, disseminate, distribute, copy or rely upon this message or attachment in any way. If you received this e-mail message in error, please return by forwarding the message and its attachments to the sender. PETER S. MERGUERIAN Technical Director I.T.L. (Product Testing) Ltd. 26 Hacharoshet St., POB 211 Or Yehuda 60251, Israel Tel: + 972-(0)3-5339022 Fax: + 972-(0)3-5339019 Mobile: + 972-(0)54-838175 http://www.itl.co.il http://www.itl.co.il/ http://www.i-spec.com http://www.i-spec.com/ -Original Message- From: Joshua Wiseman [mailto:jwise...@printronix.com] Sent: Thursday, October 17, 2002 12:39 AM To: Emc-Pstc (E-mail) Subject: Mobile Power Cart Hi all, My marketing department has decided it would be a good idea to put a printer on a battery cart. My question is what standards will I need to test to for this. The power cart will be supplied with a battery charger, 12V lead-acid battery, and a 12Vdc to 120Vac or 12Vdc to 230Vac inverter. Thanks in advance for your help, Josh
