IEC 62311-2007 Assessment of electronic and electrical equipment related to human exposure restrictions for electromagnetic fields (0 Hz - 300 GHz)《电磁场(0Hz～300GHz)用与人类辐射限制相关的电子和电气设备的评估》.pdf

1、 IEC 62311Edition 1.0 2007-08INTERNATIONAL STANDARD NORME INTERNATIONALEAssessment of electronic and electrical equipment related to human exposure restrictions for electromagnetic fields (0 Hz 300 GHz) Evaluation des quipements lectroniques et lectriques en relation avec les restrictions dexpositio

2、n humaine aux champs lectromagntiques (0 Hz 300 GHz) IEC62311:2007THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2007 IEC, Geneva, Switzerland All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mech

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16、tion ou si vous avez des questions, visitez le FAQ du Service clients ou contactez-nous: Email: csciec.ch Tl.: +41 22 919 02 11 Fax: +41 22 919 03 00 IEC 62311Edition 1.0 2007-08INTERNATIONAL STANDARD NORME INTERNATIONALEAssessment of electronic and electrical equipment related to human exposure res

17、trictions for electromagnetic fields (0 Hz 300 GHz) Evaluation des quipements lectroniques et lectriques en relation avec les restrictions dexposition humaine aux champs lectromagntiques (0 Hz 300 GHz) INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE XBICS 97.030

18、PRICE CODECODE PRIXISBN 2-8318-9269-4 2 62311 IEC:2007 CONTENTS FOREWORD.4 1 Scope and object6 2 Normative references .6 3 Terms and definitions .6 4 Compliance criteria.10 5 Assessment methods .10 6 Evaluation of compliance to limits.11 7 Applicability of compliance assessment methods12 7.1 General

19、 .12 7.2 Generic procedure for assessment of equipment .14 8 Sources with multiple frequencies 17 8.1 Introduction .17 8.2 Frequency range from 1 Hz 10 MHz (ICNIRP-based)17 8.2.1 Frequency domain assessment17 8.2.2 Time domain assessment 19 8.3 Frequency range from 100 kHz 300 GHz (ICNIRP-based) 21

20、8.4 Frequency range from 0 kHz 5 MHz (IEEE-based)22 8.4.1 Frequency domain assessment22 8.4.2 Time domain assessment 22 8.5 Frequency range from 3 kHz 300 GHz (IEEE-based) 23 9 Assessment report23 9.1 General .23 9.2 Items to be recorded in the assessment report 24 9.2.1 Assessment method 24 9.2.2 P

21、resentation of the results.24 9.2.3 Equipment using external antennas .24 10 Information to be supplied with the equipment 24 Annex A (informative) Field calculation 25 Annex B (informative) SAR compliance assessment .30 Annex C (informative) Information for numerical modelling.32 Annex D (informati

22、ve) Measurements of physical properties and body currents .61 Annex E (informative) Specific absorption rate (SAR) .65 Annex F (informative) Measurement of E and H field67 Annex G (informative) Source modelling .70 Bibliography73 Figure 1 Assessment flowchart 16 Figure 2 Schematic of “weighting circ

23、uit”19 Figure 3 Dependency on frequency of the reference levels V plotted with smoothing edges .19 Figure 4 Transfer function A.20 62311 IEC:2007 3 Figure A.1 Geometry of antenna with largest linear dimension D25 Figure A.2 Current element Idlsin( t) at the origin of spherical coordinate system 26 F

24、igure A.3 Ratio of E2, H2, and E H field components .27 Figure A.4 Ratio of E H field components for three typical antennas28 Figure A.5 Far-field = straight line, radiated near-field = lower line any IEC National Committee interested in the subject dealt with may participate in this preparatory wor

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32、ation of this publication. 9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of patent rights. IEC shall not be held responsible for identifying any or all such patent rights. International Standard IEC 62311 has been prepared by IEC techni

33、cal committee 106: Methods for the assessment of electric, magnetic and electromagnetic fields associated with human exposure. The text of this standard is based on the following documents: FDIS Report on voting 106/129/FDIS 106/134/RVD Full information on the voting for the approval of this standar

34、d can be found in the report on voting indicated in the above table. This publication has been drafted in accordance with the ISO/IEC Directives, Part 2. 62311 IEC:2007 5 The committee has decided that the contents of this publication will remain unchanged until the maintenance result date indicated

35、 on the IEC web site under “http:/webstore.iec.ch“ in the data related to the specific publication. At this date, the publication will be reconfirmed; withdrawn; replaced by a revised edition, or amended. 6 62311 IEC:2007 ASSESSMENT OF ELECTRONIC AND ELECTRICAL EQUIPMENT RELATED TO HUMAN EXPOSURE RE

36、STRICTIONS FOR ELECTROMAGNETIC FIELDS (0 Hz 300 GHz) 1 Scope and object This International Standard applies to electronic and electrical equipment for which no dedicated product- or product family standard regarding human exposure to electromagnetic fields applies. The frequency range covered is 0 H

37、z to 300 GHz. The object of this generic standard is to provide assessment methods and criteria to evaluate such equipment against basic restrictions or reference levels on exposure of the general public related to electric, magnetic and electromagnetic fields and induced and contact current. NOTE T

38、his standard is intended to cover both intentional and non-intentional radiators. If the equipment complies with the requirements in another relevant standard, e.g. EN 50371 covering low power equipment, then the requirements of this standard (IEC 62311) are considered to be met and the application

39、of this standard to that equipment is not necessary. See also Clause 7.2. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenc

40、ed document (including any amendments) applies. IEC 60050-161, International Electrotechnical Vocabulary Chapter 161: Electromagnetic compatibility 3 Terms and definitions For the purposes of this document, the terms and definitions contained in IEC 60050-161 as well as the following terms and defin

41、itions apply. 3.1 averaging time tavgappropriate time over which exposure is averaged for purposes of determining compliance 3.2 basic restriction maximum exposure level that should not be exceeded under any conditions NOTE Examples of basic restrictions can be found in Annex II of the Council Recom

42、mendation 1999/519/EC 61), ICNIRP Guidelines 1 IEEE Std C95.6 2 and IEEE Std C95.1 3. 1) Figures in square brackets refer to the Bibliography. 62311 IEC:2007 7 3.3 contact current current flowing into the body resulting from contact with a conductive object in an electromagnetic field. This is the l

43、ocalised current flow into the body (usually the hand, for a light brushing contact) 3.4 current density J current per unit cross-sectional area flowing inside the human body as a result of exposure to electromagnetic fields 3.5 duty factor duty cycle ratio of pulse duration to the pulse period of a

44、 periodic pulse train. Also, a measure of the temporal transmission characteristic of an intermittently transmitting RF source such as a paging antenna by dividing average transmission duration by the average period for transmissions. A duty factor of 1,0 corresponds to continuous operation 3.6 elec

45、tric field strength E magnitude of a field vector at a point that represents the force (F) on an infinitely small charge (q) divided by the charge qFE = 3.7 equipment under test EUT an electrical or electronic apparatus that is tested for compliance with exposure limits 3.8 exposure exposure occurs

46、whenever and wherever a person is subjected to electric, magnetic or electromagnetic fields or to contact current other than those originating from physiological processes in the body and other natural phenomena 3.9 exposure level value of the quantity used to assess exposure NOTE This may be an ind

47、uced current density, SAR, power density, electric or magnetic field strength, a limb current or a contact current. 3.10 exposure limit value of an electric, magnetic or electromagnetic field derived from the basic restrictions using worst-case assumption about exposure. If the exposure limit is not

48、 exceeded, then the basic restrictions will never be exceeded 3.11 exposure, direct effect of result of a direct interaction in the exposed human body from exposure to electromagnetic fields 8 62311 IEC:2007 3.12 exposure, indirect effect of result of a secondary interaction between the exposed huma

49、n body and an electromagnetic field, often used to describe a contact current, shock or burn arising from contact with a conductive object 3.13 exposure, partial-body localised exposure of part of the body, producing a corresponding localised SAR or induced current density, as distinct from a whole-body exposure 3.14 exposure, whole-body exposure of the whole body (or the torso when ind