IEC_60939-2-2005.pdf

INTERNATIONAL STANDARD IEC60939-2 Second edition2005-02 Passive filter units for electromagnetic interference suppression Part 2:Sectional specification Passive filter units for which safety tests are appropriate Test methods and general requirements Reference number IEC 60939-2:2005(E)LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.Publication numbering As from 1 January 1997 all IEC publications are issued with a designation in the 60000 series.For example,IEC 34-1 is now referred to as IEC 60034-1.Consolidated editions The IEC is now publishing consolidated versions of its publications.For example,edition numbers 1.0,1.1 and 1.2 refer,respectively,to the base publication,the base publication incorporating amendment 1 and the base publication incorporating amendments 1 and 2.Further information on IEC publications The technical content of IEC publications is kept under constant review by the IEC,thus ensuring that the content reflects current technology.Information relating to this publication,including its validity,is available in the IEC Catalogue of publications(see below)in addition to new editions,amendments and corrigenda.Information on the subjects under consideration and work in progress undertaken by the technical committee which has prepared this publication,as well as the list of publications issued,is also available from the following:IEC Web Site(www.iec.ch)Catalogue of IEC publications The on-line catalogue on the IEC web site(www.iec.ch/searchpub)enables you to search by a variety of criteria including text searches,technical committees and date of publication.On-line information is also available on recently issued publications,withdrawn and replaced publications,as well as corrigenda.IEC Just Published This summary of recently issued publications(www.iec.ch/online_news/justpub)is also available by email.Please contact the Customer Service Centre(see below)for further information.Customer Service Centre If you have any questions regarding this publication or need further assistance,please contact the Customer Service Centre:Email:custserviec.ch Tel:+41 22 919 02 11 Fax:+41 22 919 03 00 LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.INTERNATIONAL STANDARD IEC60939-2 Second edition2005-02 Passive filter units for electromagnetic interference suppression Part 2:Sectional specification Passive filter units for which safety tests are appropriate Test methods and general requirements IEC 2005 Copyright-all rights reserved No part of this publication may be reproduced or utilized in any form or by any means,electronic or mechanical,including photocopying and microfilm,without permission in writing from the publisher.International Electrotechnical Commission,3,rue de Varemb,PO Box 131,CH-1211 Geneva 20,SwitzerlandTelephone:+41 22 919 02 11 Telefax:+41 22 919 03 00 E-mail:inmailiec.ch Web:www.iec.ch X For price,see current catalogue PRICE CODE Commission Electrotechnique InternationaleInternational Electrotechnical Commission LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.2 60939-2 IEC:2005(E)CONTENTS FOREWORD.4 1 General.6 1.1 Scope.6 1.2 Normative references.6 1.3 Information to be given in a detail specification.7 1.4 Definitions.8 1.5 Marking.9 2 Preferred ratings and characteristics.10 2.1 Preferred characteristics.10 2.2 Preferred values of ratings.10 3 Quality assessment procedures.11 3.1 Primary stage of manufacture.11 3.2 Structurally similar filters.11 3.3 Certified records of released lots.11 3.4 Approval testing.11 3.5 Quality conformance inspection.13 4 Test and measurement procedures.18 4.1 Earth inductors incorporated in filters.18 4.2 Capacitance and tan measurements.18 4.3 Visual examination and check of dimensions.18 4.4 Voltage proof.19 4.5 Insulation resistance.20 4.6 DC line resistance or voltage drop at rated current.20 4.7 Insertion loss.21 4.8 Discharge resistance.21 4.9 Robustness of terminations.22 4.10 Resistance to soldering heat.22 4.11 Solderability.22 4.12 Rapid change of temperature.22 4.13 Vibration.23 4.14 Bump.23 4.15 Shock.24 4.16 Container sealing.24 4.17 Climatic sequence.25 4.18 Damp heat,steady state.26 4.19 Temperature rise.26 4.20 Impulse voltage.28 4.21 Endurance.29 4.22 Charge and discharge.31 4.23 Passive flammability.32 4.24 Current overload.32 4.25 Solvent resistance of the marking.32 4.26 Component solvent resistance.33 4.27 Active flammability.33 LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.60939-2 IEC:2005(E)3 Annex A(normative)Test schedule for qualification approval Assessment level D/DZ.34 Annex B(normative)Test schedule for safety requirements only.38 Annex C(normative)Circuit for the impulse voltage test.40 Annex D(normative)Circuit for the endurance test.42 Annex E(normative)Declara