PFC on 150w mains to DC switcher
I have selecting a 150w universal input (110-240 VAC nom) four rail switcher for use in a product (digital audio workstation) to be shipped to USA, Japan, Europe etc. The supply has a CE mark. I notice, however, that there is no PFC stage, and no mention of PFC in the supply data sheet. I thought that PFC was required in Europe - could someone please confirm / deny this? Thanks Jon Keeble --- Hardware Engineering Manager FairlightESP Pty Ltd Phone +61 2 8977 9931 jkee...@alpha.net.au --- --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. 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: Jim Bacher: jim_bac...@mail.monarch.com Michael Garretson:pstc_ad...@garretson.org For policy questions, send mail to: Richard Nute: ri...@ieee.org
RE: TTE and TNE
Both types of equipment fall under the Low Voltage and EMC Directives. The RTTE Directive (Radio and Telecommunications Terminal Equipment) applies only to Termnial equipment. Network equipment has its own EMC Standards EN 300-386 series) and presumably safety as well. As to network requirements, they are found in ETSI standards, but may not be codified in the OJEC. John P. Wagner AVAYA Communication 1300 W. 120th Ave, Room B3-D16 Phone/Fax: (303) 538-4241 johnwag...@avaya.com -- From: rehel...@mmm.com[SMTP:rehel...@mmm.com] Reply To: rehel...@mmm.com Sent: Monday, February 19, 2001 2:09 PM To: emc-p...@majordomo.ieee.org Subject: TTE and TNE Does Telephone Terminal Equipment and Telephone Network Equipment fall under the RTTE Directive? If not, what Directive do they belong to? EMC? Low Voltage? What set of standards apply (or is this question too vague)? Thanks, Bob Heller 3M Company --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. 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: Jim Bacher: jim_bac...@mail.monarch.com Michael Garretson:pstc_ad...@garretson.org For policy questions, send mail to: Richard Nute: ri...@ieee.org --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. 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: Jim Bacher: jim_bac...@mail.monarch.com Michael Garretson:pstc_ad...@garretson.org For policy questions, send mail to: Richard Nute: ri...@ieee.org
RE: TTE and TNE
Compliance to the RTTE is required and it references the essential requirements of the EMC and LV Directives and new ones specific to the RTTE. Compliance with the essential requirements of the EMC and LV Directives can be demonstrated by following those directives and harmonized standards. Some but not all standards supporting the essential requirements particular to the RTTE have been published in the OJ. See http://europa.eu.int/comm/enterprise/rtte/infor.htm http://europa.eu.int/comm/enterprise/rtte/infor.htm for more information. Richard Woods -- From: rehel...@mmm.com [SMTP:rehel...@mmm.com] Sent: Monday, February 19, 2001 4:10 PM To: emc-p...@majordomo.ieee.org Subject: TTE and TNE Does Telephone Terminal Equipment and Telephone Network Equipment fall under the RTTE Directive? If not, what Directive do they belong to? EMC? Low Voltage? What set of standards apply (or is this question too vague)? Thanks, Bob Heller 3M Company --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. 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: Jim Bacher: jim_bac...@mail.monarch.com Michael Garretson:pstc_ad...@garretson.org For policy questions, send mail to: Richard Nute: ri...@ieee.org --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. 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: Jim Bacher: jim_bac...@mail.monarch.com Michael Garretson:pstc_ad...@garretson.org For policy questions, send mail to: Richard Nute: ri...@ieee.org
TTE and TNE
Does Telephone Terminal Equipment and Telephone Network Equipment fall under the RTTE Directive? If not, what Directive do they belong to? EMC? Low Voltage? What set of standards apply (or is this question too vague)? Thanks, Bob Heller 3M Company --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. 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: Jim Bacher: jim_bac...@mail.monarch.com Michael Garretson:pstc_ad...@garretson.org For policy questions, send mail to: Richard Nute: ri...@ieee.org
RE: Surge to 4Kv
You're right, Gary. ITU K.20 (I believe) specifies testing of telecom ports connected to the network. The test levels are 1.5kV if primary protection is present, 4.0 kV if not. The waveform is 10 x 700. CISPR 24 actually references these test levels in Table 2.. One of the European common modifications replaced these test levels with 500V of the 1.2 x 50 waveform. John P. Wagner AVAYA Communication 1300 W. 120th Ave, Room B3-D16 Phone/Fax: (303) 538-4241 johnwag...@avaya.com -- From: Gary McInturff[SMTP:gary.mcintu...@worldwidepackets.com] Reply To: Gary McInturff Sent: Monday, February 12, 2001 11:29 AM To: EMC-PSTC (E-mail) Subject: Surge to 4Kv The last information I have is that EN55024:1998, which becomes effective very soon still only identifies surge test of 2Kv line to ground, but I have a persistant buzzing in my ear from a single source that is claiming it actually requires 4Kv for the surge test. Has anyone else heard of a change to 4 Kv, - maybe ETSI? Except for the Generic heavy industrial 50081-2 - which doesn't apply to ITE equipment very often, I have not seen this 4 Kv level. I would appreciate a sanity check. Thanks Gary --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. 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: Jim Bacher: jim_bac...@mail.monarch.com Michael Garretson:pstc_ad...@garretson.org For policy questions, send mail to: Richard Nute: ri...@ieee.org --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. 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: Jim Bacher: jim_bac...@mail.monarch.com Michael Garretson:pstc_ad...@garretson.org For policy questions, send mail to: Richard Nute: ri...@ieee.org
RE: Shielded Room
Hi Jim, Try http://www.emctest.com/ The standards will depend on what needs to be tested in the room as the field strengths, absorber materials, types of antennae and physical size if the EUT all have a part to play. Regards - Chris Chileshe - Ultronics Ltd - Cheltenham, UK -Original Message- From: Jim Bacher [SMTP:jim_bac...@mail.monarch.com] Sent: Thursday, February 15, 2001 3:31 PM To: Acon Harsono; emc-p...@majordomo.ieee.org Cc: davehe...@mediaone.net Subject:Re:Shielded Room forwarding for a_hars...@telkom.net Reply Separator Subject:Shielded Room Author: Acon Harsono a_hars...@telkom.net List-Post: emc-pstc@listserv.ieee.org Date: 2/15/01 6:46 PM Hello All, I am studying the Shielded Room for Conducted RFI testing. Can anybody tell me the technical requirements or standards for the shielded room ? Thank you, Acon Harsono SUCOFINDO Laboratory - Indonesia Tlp.: +62 21 88321176 ext. 1862 Fax.: +62 21 88321166 email: a_hars...@telkom.net --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. 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: Jim Bacher: jim_bac...@mail.monarch.com Michael Garretson:pstc_ad...@garretson.org For policy questions, send mail to: Richard Nute: ri...@ieee.org This message has been checked for all known viruses, by Star Internet, delivered through the MessageLabs Virus Control Centre. For further information visit: http://www.star.net.uk/stats.asp This message has been checked for all known viruses, by Star Internet, delivered through the MessageLabs Virus Control Centre. For further information visit: http://www.star.net.uk/stats.asp --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. 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: Jim Bacher: jim_bac...@mail.monarch.com Michael Garretson:pstc_ad...@garretson.org For policy questions, send mail to: Richard Nute: ri...@ieee.org
EN 61000-6-2
Shaike, My thoughts on Immunity standards. I feel that considering why the exemptions are given is useful. For DC powered units we are worried about pick up of disturbance on the DC cables or injection of disturbances from the AC supply. Radio Frequency disturbances are considered most likely to be due to pick up on cables - you have short cables (less than 3 metres) so pick up is unlikely - the test is not required. Fast Transient Burst disturbances are considered to be most likely to be generated on the AC supply (passing through the AC /DC supply) so the test is applicable. Voltage surge disturbances are considered to be most likely to be generated on the AC supply (passing through the AC /DC supply) so the test is applicable. If the DC cables were very long (greater than 10 metres) then there would be a possibility of pick up on the cables so the test would be applicable even if there were no connections to the mains via an AC/Dc supply. I hope this helps. Steve Austin austin@cassindustries .com
RE: Compliance Documentation
Chris, Acrobat is very good. In addition to virtues already mentioned by others you can electronically sign PDF documents. Acrobat also has a Paper Capture function which runs an OCR on scanned text, converting it back into text which you can cut'n'paste back to other documents in Word etc. The OCR works well but the documents must be scanned at a certain DPI. It also requires you proof read documents carefully, even if you paste the text back into an application where you can use spell check. I once sent a scanned report out which I'd OCR'd so I could reformat in a document and spell checked it but where the word burn was now bum - and of course spell check don't catch those!! There are also plenty of bureaus who will do bulk scanning of any documents from A5 to A0 size. Some also offer cataloguing services. In the UK I have got work done at about £0.05 per A4 sheet for bulk scanning on an auto feed scanner, rising to £1.50 for A0 drawings done on a flatbed. Doing the scanning yourself is tedious unless you can buy a commercial type scanner (See Canon/Agfa etc. websites). Office/Home user type scanners are pretty slow and only go to A4 size documents. Chris -Original Message- From: Chris Maxwell [mailto:chris.maxw...@gnnettest.com] Sent: 16 February 2001 16:58 To: 'EMC-PSTC Internet Forum' Subject: Compliance Documentation Hi all, I do have a question, but the setup is sort of fun, so here goes: Well, I'm at that point. A few years ago, when the EMC Directive was first effective, we had a couple of products that we put through testing. We started keeping Compliance Folders which consisted of a cover report generated with MS Word combined with our in-house test reports and third party test reports held together with a big rubber band. This was fun for a couple of products. It was also fun when our company could remember what we called ourselves and what our product names/models were. Well, business is good...too good. The corporate captains have been buying other companies, OEMing products from other people, OEMing products to other people, changing the corporate name, changing the corporate logo, changing product model numbers ... (buying 25,000 coffee stirrers with our logo on them, we used about 20 before they changed the logo. Anybody what a now obsolete GN Nettest coffee stirrer?) Now I have about 20 large folders with anywhere from 100 to 600 pages each. Every time we go through these excercises, I spend hours sniffing toner at the copier (may explain some of my personality) putting different headers and revision numbers on these documents. I then go through 1000's of sheets of paper to run off copies for our representatives and then 100's of dollars in shipping costs to get these 10 pound paper packages to the four corners of the Earth. This is on top of the revisions that we normally incorporate for product re-tests, re-designs ... My question is, is there a better way? I have considered buying Adobe Acrobat and then converting all of my Word Documents to Adobe documents. Then I could scan in the attachments. All of this digital information, I could then store on a CD ROM drive with a main directory for my cover report and sub-directories for all of the various 3rd party reports, CDRH filings ... We could then offer our Compliance information via pdf files on the web. Is anyone doing this? Do you have any recommendations for what software to use? What scanners work best? What scanner resolution will duplicate test reports without losing precious information? Better yet. Does anybody know of a service where you can send 1000's of pages of info to them for them to scan and convert to pdf files. This would prove valuable during the initial conversion. Has anybody tried this and been sorry they did? I'm ready to go digital. My goal is to incorporate word processed reports, third party test lab paper copies, third party test lab pictures, hand written data ... into a coherent package for storage and revision. I assume that many of you fight this same battle. Any hints or pitfall warnings would be greatly appreciated. Chris Maxwell Design Engineer NetTest 6 Rhoads Drive, Building 4 Utica,NY 13502 email: chris.maxw...@gnnettest.com phone: 315-266-5128 fax: 315-797-8024 --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. 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: Jim Bacher: jim_bac...@mail.monarch.com Michael Garretson:pstc_ad...@garretson.org For policy questions, send mail to: Richard Nute: ri...@ieee.org --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. To cancel your subscription, send
Spacings from Shielded Enclosure to Floating GND
Dear All, Just wondering if there is a rule of thumb for creepages/clearances for ESD/or other emc requirements between a shielded enclosure and the digital or analog GND (floating) on a backplane. Thanks Peter Merguerian Managing Director Product Testing Division I.T.L. (Product Testing) Ltd. Hacharoshet 26, POB 211 Or Yehuda 60251, Israel Tel: 972-3-5339022 Fax: 972-3-5339019 e-mail: pmerguer...@itl.co.il website: http://www.itl.co.il TO LEARN ABOUT AUSTRALIAN AND NEW ZEALAND REQUIREMENTS, CONTACT ME AT THE EARLIEST STAGES OF YOUR DESIGN; REQUIREMENTS CAN BE TRICKY! --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. 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: Jim Bacher: jim_bac...@mail.monarch.com Michael Garretson:pstc_ad...@garretson.org For policy questions, send mail to: Richard Nute: ri...@ieee.org
RE: 61326-1
Brian I would recommend you get a copy of the standard including the 1999 amendment. It has a lot of good stuff in it including allowing you to chose the pass/Fail criteria on the immunity testing. Also a lot of the pass levels have been relaxed compared to the old general ISM Standards Brian Harlowe Thermo V.G. Scientific Tel +44 (0)1342 327211 Fax +44 (0)1342 315074 -Original Message- From: Brian O'Connell Sent: 16 February 2001 17:58 To: emc-p...@ieee.org Subject: 61326-1 Good people of the group: Are requirements in IEC61326-1 (EMC for lab instruments) similiar to/same/much different than CISPR11/16 and/or the good stuff in 61000-3-x/-4-x ?? If so, is the level of difference enough such that I will have have to buy (yet) another standard? thanx much, Brian O'Connell Taiyo Yuden (USA), Inc. --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. 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: Jim Bacher: jim_bac...@mail.monarch.com Michael Garretson:pstc_ad...@garretson.org For policy questions, send mail to: Richard Nute: ri...@ieee.org --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. 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: Jim Bacher: jim_bac...@mail.monarch.com Michael Garretson:pstc_ad...@garretson.org For policy questions, send mail to: Richard Nute: ri...@ieee.org
RE: Hipot test AC v DC
Hi Peter, Check out the attached web site. Good Info. Praveen -Original Message- From: peterh...@aol.com [mailto:peterh...@aol.com] Sent: Monday, 12 February 2001 5:35 PM To: emc-p...@majordomo.ieee.org Subject: Hipot test AC v DC Hello group, Could someone explain the followings to me please? 1-When to use DC hipot test in place of AC tester. 2-What are the advantages and disadvantages of AC or DC hipot tester?i.e comparing the two. 3-Is the leakage current trip setting different on AC DC tester? Many thanks Pete --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. 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: Jim Bacher: jim_bac...@mail.monarch.com Michael Garretson:pstc_ad...@garretson.org For policy questions, send mail to: Richard Nute: ri...@ieee.org QuadTech Inc. - Application Note Library for Hipot Testers, LCR Meters, Megohmmeters, and Milliohmmeters.url Description: Binary data
