Re: EN 61326 Vs EN 61131-2
Hi, here are the important differences: EN 61326 is a product family standard. EN 61131-2 is a product standard: IEC 61000-4-3 1,4 - 2,0 GHz / 800 / 960 MHz with 10 V/m, more detailed requirements and test setups for conducted disturbances in specific EMC zones. The product standard has pre-eminence to the the product family standard. Mit freundlichen Grüßen Yours sincerely Dipl.-Ing. Michael Loerzer Managing Director Regulatory Affairs Specialist Chairman of the Product Conformity Group (DIN ANP German Committee of Standards Users) GLOBALNORM - Global Regulatory Compliance Fon: +49 30 6392-3860, Direct Call: 3861 Fax: +49 30 6392-3863 Rudower Chaussee 29 12489 Berlin Germany http://www.globalnorm.ca www.globalnorm.ca http://www.Globalnorm.de www.Globalnorm.de - Original Message - From: Derek Walton mailto:lfresea...@aol.com To: IEEE EMC Discussion Group mailto:emc-p...@ieee.org Sent: Thursday, June 15, 2006 8:03 AM Subject: EN 61326 Vs EN 61131-2 Morning all, can anyone give me a quick overview of how these stds differ please? I'm familier with EN 61326, but not EN 61131-2 Thanks, Derek. - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. Website: http://www.ieee-pses.org/ To post a message to the list, send your e-mail to emc-p...@ieee.org Instructions: http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas emcp...@ptcnh.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher: j.bac...@ieee.org David Heald: emc-p...@daveheald.com All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. Website: http://www.ieee-pses.org/ To post a message to the list, send your e-mail to emc-p...@ieee.org Instructions: http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas emcp...@ptcnh.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher: j.bac...@ieee.org David Heald: emc-p...@daveheald.com All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc
VCCI-NVLAP, Site Registration MOU Status?
Dear Peers, Summary: Has anyone an authoritative and current word on the state of the NVLAP/VCCI MOU/MRA? In early March 2006 a VCCI person informed me that a MOU with NVLAP was to be in place by the end of that month. Indeed, the subsequent annual April update of the VCCI regulations showed NVLAP added to the accreditation bodies - with some vague phrase about when notification occurs. Last month I arranged for VCCI technical requirements to be added to our NVLAP accreditation scope in preparation for some upcoming and overdue site registrations. All seemed to be going smoothly... Then this week, in an email exchange with VCCI I was informed that the MOU did not happen yet and may not for a few months. Resolving this is important with regard to VCCI site registration fees: the old scheme costs money, the accreditation site registration scheme has no fees (and presumably, much faster). I have at least 5 sites to register for my employer real soon now, including our recently acquired 10 meter semi-anechoic facility. So the registration method will involve thousands of dollars and many hours of work if I the accreditation route is not available soon. Best Regards, Eric Lifsey - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list.Website: http://www.ieee-pses.org/ To post a message to the list, send your e-mail to emc-p...@ieee.org Instructions: http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas emcp...@ptcnh.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher: j.bac...@ieee.org David Heald:emc-p...@daveheald.com All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc
RE: NRTL mark required for goods shipped into USA?
Hello Samuel, And, what say you of products not used in the workplace (I don't necessarily agree with the position stated by some that one's home is a workplace - other than for home based businesses)? Best regards, Art Michael -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- |http://www.safetylink.com | || | The Safety Link is the most comprehensive collection | | of product safety and standards resources on the WEB | || | Int'l Product Safety News | |(It's our 18th Anniversary 1988-2006) | | P.O.Box 1561 - WWW | |Middletown CT 06457-8061 U.S.A. | | Phone: (860) 344-1651 Fax: (860) 346-9066 | |http://www.safetylink.com/#IPSN | -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- === On Fri, 16 Jun 2006, Samuel Lifshutz wrote: Group: Here are the reasons for safety compliance in USA. In United States, Code of Federal Regulations, CFR 29, Subpart S, Part 1910.399 states that installation or equipment that utilizes electricity and used in the workplace must be acceptable to the Assistant Secretary of Labor. Acceptable. An installation or equipment is acceptable to the Assistant Secretary of Labor, and approved within the meaning of this Subpart S: (i) If it is accepted, or certified, or listed, or labeled, or otherwise determined to be safe by a nationally recognized testing laboratory; or (ii) With respect to an installation or equipment of a kind which no nationally recognized testing laboratory accepts, certifies, lists, labels, or determines to be safe, if it is inspected or tested by another Federal agency, or by a State, municipal, or other local authority responsible for enforcing occupational safety provisions of the National Electrical Code, and found in compliance with the provisions of the National Electrical Code as applied in this subpart; or (iii) With respect to custom-made equipment or related installations which are designed, fabricated for, and intended for use by a particular customer, if it is determined to be safe for its intended use by its manufacturer on the basis of test data which the employer keeps and makes available for inspection to the Assistant Secretary and his authorized representatives. Refer to 1910.7 for definition of nationally recognized testing laboratory. CFR 29 provides the list of NRTL and a list of standards acceptable to the Assistant Secretary of Labor. Failure to have product listed by NRTL is a violation of law. States laws, municipal, local and industry regulations may have additional acceptability requirements. Non-compliance may result in criminal and civil penalties. Samuel Lifshutz Manager QA MRV Communications Inc. 20520 Nordhoff Street Chatsworth, CA 91311, USA Tel: (818) 772-6235 x265 Fax: (818) 772-0576 email: slifsh...@mrv.com Registered by QMI to ISO 9001:2000 From: emc-p...@ieee.org [mailto:emc-p...@ieee.org] On Behalf Of Jayasinghe, Ryan Sent: Wednesday, June 14, 2006 11:34 AM To: ted.eck...@apcc.com; charles.black...@sulisconsultants.com Cc: emc-p...@ieee.org Subject: RE: NRTL mark required for goods shipped into USA? Hello All, Also from GR1089: 7.2 Listing Requirements R7-1 [22] All network equipment that is directly powered by commercial ac, either through a hard-wire or plug-and-cord connection, shall be listed for the purpose by a Nationally Recognized Testing Laboratory (NRTL)and is mentioned in several other sections depending on product type-required tests. Applies also Customer Premise Equipment powered by AC. The folks performing NEBS testing might require NRTL listing. Ryan Jazz JayasingheCompliance Engineer x1198 Canoga Perkins Direct:(818) 678-3898 20600 Prairie StreetCompany:(818) 718-6300 Chatsworth, CA 91311-6008 e-mail: r...@canoga.com www.canoga.com FAX:(818) 678-3798 -Original Message- From: emc-p...@ieee.org [mailto:emc-p...@ieee.org]On Behalf Of ted.eck...@apcc.com Sent: Wednesday, June 14, 2006 6:56 AM To: charles.black...@sulisconsultants.com Cc: emc-p...@ieee.org Subject: Re: NRTL mark required for goods shipped into USA? Hello Charlie, The United States National Electrical Code does not require NRTL Listing for general installations, but it is a benefit. Products that are not NRTL marked are subject to the approval of the local electrical inspector. That person has the ability to accept unmarked product, but then you have to deal with their preferences and
Re: Pop rivets as protective bonding devices
John, Expanding on what Peter said, the contact pressure between two items joined by a pop rivet(s) can only decrease from the as-manufactured value, especially if there is any movement in the joint from rotation, vibration, expansion/contraction from temperature changes, etc. Thus the contact resistance will increase with use and age, especially if there is any oxidation or corrosion of the metals. I developed network adapters for IBM Lexington and Lexmark for 11 years. At first we pop-riveted the shielding brackets onto printed circuit boards. Then we discovered that we could reduce some radiated emissions by up to 10dB -- ON BRAND-NEW CARDS -- by instead using: * A machine screw. * A split lock washer or star washer under the screw head. * The items to be joined. * Another split lock washer or star washer. * A nut. The split lock washers or star washers ensured that the contact was held under a high, constant pressure throughout the life of the product. We later simplified the assembly to: * A machine screw with integral Belleville washer. * The items to be joined. * A nut with a captive external-tooth star washer. A further simplification for high-volume products was to pierce and tap holes into the bottom piece of metal, making it into the nut(s). This information is from pages 33-2 through 33-3 of my book, Robust Electronic Design Reference Book, Volume 1 (Kluwer Academic Publisher, 2004). John Barnes KS4GL, PE, NCE, NCT, ESDC Eng, ESDC Tech, PSE, SM IEEE dBi Corporation http://www.dbicorporation.com/ - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list.Website: http://www.ieee-pses.org/ To post a message to the list, send your e-mail to emc-p...@ieee.org Instructions: http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas emcp...@ptcnh.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher: j.bac...@ieee.org David Heald:emc-p...@daveheald.com All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc
