If anyone is working on such a paper, please consider presenting it at the TC-8 session of either the 2001 or 2002 IEEE EMC Symposium.
Jim (Yes I am a little behind in reading the postings). ____________________Reply Separator____________________ Subject: Insulation failure - recent data Author: "Pete Perkins" <[email protected]> List-Post: [email protected] Date: 11/12/00 11:46 PM PSNet We don't seem to get published data based upon testing to the standards with which we normally work. Dr Pfeiffer (whom we know from the 28A/664 work) and his colleagues have performed an evaluation of the failures of equipment to impulses as defined in 61000-4-5, which are in agreement with the principles of insulation coordination. Failures of electronic equipment caused by transient overvoltages are increasing rapidly is a part of the header for this paper. The particulars are contained in the article, but the thrust of the evaluation is that the equipment failed what is considered to be a reasonable test. 13 of 20 power supplies failed the test. Although this is described as an EMC test, it certainly has safety implications. The abrogation of protective insulation can lead to fire or electric shock from the failure. The article suggests the addition of a series impedance as a step in protection until the insulation in the capacitors is improved. The article is from the IEEE Electrical Insulation Magazine, March/April 2000 - Vol 16, No 2. Get your librarian to chase it down for you... It would be nice to get more published data on this... anyone putting together a paper??? br, Pete Peter E Perkins, PE Principal Product Safety Consultant Tigard, ORe 97281-3427 503/452-1201 fone/fax [email protected] ------------------------------------------- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. To cancel your subscription, send mail to: [email protected] with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Jim Bacher: [email protected] Michael Garretson: [email protected] For policy questions, send mail to: Richard Nute: [email protected] Received: from ruebert.ieee.org ([199.172.136.3]) by mail.monarch.com with SMTP (IMA Internet Exchange 3.14) id 00002C1E; Mon, 13 Nov 2000 04:46:39 -0800 Received: by ruebert.ieee.org (8.9.3/8.9.3) id CAA09446; Mon, 13 Nov 2000 02:47:51 -0500 (EST) From: "Pete Perkins" <[email protected]> To: "PSNet" <[email protected]> Subject: Insulation failure - recent data List-Post: [email protected] Date: Sun, 12 Nov 2000 23:46:22 -0800 Message-ID: <[email protected]> MIME-Version: 1.0 Content-Type: text/plain; Content-Transfer-Encoding: 7bit X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook IMO, Build 9.0.2416 (9.0.2911.0) Importance: Normal X-MimeOLE: Produced By Microsoft MimeOLE V5.50.4133.2400 X-Apparently-From: [email protected] Sender: [email protected] Precedence: bulk Reply-To: "Pete Perkins" <[email protected]> X-Resent-To: Multiple Recipients <[email protected]> X-Listname: emc-pstc X-Info: Help requests to [email protected] X-Info: [Un]Subscribe requests to [email protected] X-Moderator-Address: [email protected] ------------------------------------------- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. To cancel your subscription, send mail to: [email protected] with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Jim Bacher: [email protected] Michael Garretson: [email protected] For policy questions, send mail to: Richard Nute: [email protected]
