IEC INTERNATIONAL STANDARD 61000-4-33 First edition 2005-09 BASIC EMC PUBLICATION Electromagnetic compatibility (EMC) - Part 4-33: Testing and measurement techniques - Measurement methods for high-power transient parameters JEC Referencenumber IEC 61000-4-33:2005(E) Copyright Inte 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, 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 inthe IECCatalogue 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 committees IECJustPublished 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, CustomerServiceCentre If you have any questions regarding this publication or need further assistance, please contact the Customer Service Centre: Email: [email protected] Tel: +41229190211 Fax: +4122919 0300 Copyright Intemational Electrotechnical Commission IEC INTERNATIONAL STANDARD 61000-4-33 First edition 2005-09 BASICEMCPUBLICATION Electromagnetic compatibility (EMC) - Part 4-33: Testingand measurement techniques- Measurement methods for high-power transient parameters 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 Intemational Electrotechnical Commission, 3, rue de Varembe, PO Box 131, CH-1211 Geneva 20, Switzerland Telephone: +41 22 919 02 11 Telefax: +41 22 919 03 00 E-mail: [email protected]: www.iec.ch XB PRICE CODE LEC Commission Electrotechnique _Internationale International Electrotechnical Commission For price, see current catalogue Copyright Intem 61000-4-33 4 CONTENTS FOREWORD INTRODUCTION Scope 2 Normative references.. Terms and definitions. 3 Measurementof highepowertransient responses 4 4.1Overall measurement concepts and requirements. 9 4.2 Representation of a measured response .12 4.3 Measurement equipment.. 12 4.4 Measurement procedures... ..27 Measurement of low frequency responses 27 5 Calibration procedures. 6 28 6.1 Calibration of the entire measurement channel.. ..28 6.2 Calibration of individual measurement channel components .31 6.3 Approximate calibrationtechniques ..37 AnnexA (normative)Methods of characterizing measured responses. AnnexB(informative)Characteristics of measurement sensors. ..45 AnnexC(normative)HPEMmeasurement procedures. .59 AnnexD (informative)Two'port representations of measurement chain components.. ..62 Bibliography 69 Figure 1 - Illustration of a typical instrumentation chain for measuring high·power transientresponses.. 10 Figure 2 - Illustration of a balanced sensor and cable connecting to an unbalanced (coaxial) line where lout + lin = /1... 16 Figure 3-Examples of some simple baluns [4b]... Figure 4-A typical circuit for an in-line attenuator in the measurement chain Figure 5- Illustration of the typical attenuation of a nominal 20 dB attenuator for a 50-0 system, as a function of frequency. 19 Figure 6 -Typical circuit diagram for an in·line integrator. Figure 7 - Plot of the transfer function of the integrating circuit of Figure 6.. .20 Figure 8 -Illustration of the frequency de