IEC_TS_62997-2017.pdf

IEC TS 62997 Edition 1.0 2017-06 TECHNICA L SPECIFICA TION Industrial electroheating and electromagnetic processing equipment Ev aluation of hazards caused by magnetic nearfields from 1 Hz to 6 MHz IEC TS 62997:2017-06(en)colourinside THIS PUBLICA TION IS COPYRIGHT PROTECTED Copyright 2017 IEC,Geneva,Switzerland All rights reserved.Unless otherwise specified,no par t of this publication may be reproduced or utilized in any for m or by any means,electronic or mechanical,including photocopying and microfilm,without per mission in writing fr om either IEC or IECs member National Committee in the country of the requester.If you have any questions about IEC copyright or have an enquiry about obtaining additional r ights to this publication,please contact the address below or your local IEC member National Committee for further infor mation.IEC Centr al Office Tel.:+41 22 919 02 11 3,rue de Varemb Fax:+41 22 919 03 00 CH-1211 Geneva 20 infoiec.ch Switzerland www.iec.ch About t he IEC The International Electr otechnical Commission(IEC)is the leading global organization that prepar es and publishes Inter national Standards for all electr ical,electronic and related technologies.A bout IEC publications The technical content of IEC publications is kept under constant review by the IEC.Please make sur e that you have the latest edition,a cor rigenda or an amendment might have been published.IEC Cat alogue-webstore.iec.ch/cat alogue The stand-alone application for consulting the entire bibliographical information on IEC International Standards,Technical Specifications,Technical R eports and other documents.A v ailable for PC,Mac OS,A ndroid Tablets and iPad.IEC publications search-w w w.iec.ch/searchpub The adv anced search enables to find IEC publications by a variety of criteria(reference number,text,technical committee,).It also gives information on projec ts,replaced and withdrawn publications.IEC Just Published-webstore.iec.ch/justpublished Stay up to date on all new IEC publications.Just Published details all new publications released.A v ailable online and also once a month by email.Elect ropedia-w w w.elect ropedia.org The worlds leading online dic tionary of elec tronic and electrical terms containing 20 000 terms and definitions in English and French,with equiv alent terms in 16 additional languages.Also known as the International Electrotechnical Vocabulary (IEV)online.IEC Glossar y-st d.iec.ch/glossary 65 000 elec trotechnical terminology entries in English and French extracted from the Terms and Definitions clause of IEC publications issued since 2002.Some entries hav e been collected from earlier publications of IEC TC 37,77,86 and CISPR.IEC Customer Service Cent re-webstore.iec.ch/csc If y ou wish to giv e us y our feedback on this publication or need further assistance,please contact the Customer Serv ice Centre:csciec.ch.IEC TS 62997 Edit ion 1.0 2017-06 TECHNICA L SPECIFICA TION Industrial electroheating and electromagnetic processing equipment Ev aluation of hazards caused by magnetic nearfields from 1 Hz to 6 MHz INTERNATIONAL ELECTROTECHNICAL COMMISSION ICS 25.180.10 ISBN 978-2-8322-4449-4 R egist er ed tr ademar k of t he Int er national Electr ot echnical Commission W arning!Make sure that y ou obtained this publication from an authorized distributor.colourinside 2 IEC TS 62997:2017 IEC 2017 CONTENTS FOREWORD.7 INTRODUCTION.9 1 Scope.11 2 Normative references.11 3 Terms,definitions,symbols and abbreviated terms.11 3.1 Terms and definitions.11 3.2 Quantities and units.14 4 Organisation and use of the technical specification.15 5 The basic relationship for determination of the in situ induced electric field.16 6 Requirements related to immediate nerve and muscle reactions.16 6.1 General.16 6.2 Method using the conductor geometry and current restriction(CGCR).17 6.3 Volunteer test method.18 6.3.1 Volunteer basic test method.18 6.3.2 Method based on volunteer tests and similarity with pre-existing scenario.19 6.3.3 Method based on volunteer tests,using available elevated conductor current or shorter distance between the conductor and bodypart.19 6.3.4 Method using magnetic nearfield reference levels(RLs).19 7 Requirements related to body tissue overheating.19 7.1 General.19 7.2 Intermittent conditions with 6 minutes time integration.20 7.3 Intermittent conditions in fingers and hands with shorter integration times.21 8 Calculations and numerical computations of induced E field and SAR by magnetic nearfields:inaccuracies,uncertainties and safety factors.21 8.1 Principles for handling levels of safety general.21 8.2 The C value variations with B field curvature.22 8.3 Location of parts of the body,instrumentation and measurement issues.22 8.4 Handling of inaccuracies of in sit u E field and SAR numerical values.22 8.5 Approaches to compliance.23 8.5.1 General.23 8.5.2 Cases where verification of levels being below the RL is sufficient.23 8.5.3 Cases where only B flux measurements are sufficient.23 8.5