1、 IEC 61000-2-10 Edition 2.0 2021-11 INTERNATIONAL STANDARD Electromagnetic compatibility(EMC)Part 2-10:Environment Description of HEMP environment Conducted disturbance IEC 61000-2-10:2021-11(en)BASIC EMC PUBLICATION colourinside THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2021 IEC,Geneva,Swit
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9、anguages.Also known as the International Electrotechnical Vocabulary(IEV)online.IEC 61000-2-10 Edition 2.0 2021-11 INTERNATIONAL STANDARD Electromagnetic compatibility(EMC)Part 2-10:Environment Description of HEMP environment Conducted disturbance INTERNATIONAL ELECTROTECHNICAL COMMISSION ICS 33.100
10、.01 ISBN 978-2-8322-1050-6 BASIC EMC PUBLICATION Registered trademark of the International Electrotechnical Commission Warning!Make sure that you obtained this publication from an authorized distributor.colourinside 2 IEC 61000-2-10:2021 IEC 2021 CONTENTS FOREWORD.5 INTRODUCTION.7 1 Scope.8 2 Normat
11、ive references.8 3 Terms and definitions.8 4 General.12 5 Description of HEMP environment,conducted parameters.13 5.1 Introductory remarks.13 5.2 Early-time HEMP external conducted environment.13 5.3 Intermediate-time HEMP external conducted environment.15 5.4 Late-time HEMP external conducted envir
12、onment.15 5.5 Antenna currents.17 5.6 HEMP internal conducted environments.21 Annex A(informative)Discussion of early-time HEMP coupling for long lines.23 A.1 Elevated line coupling.23 A.2 Buried line coupling.24 Annex B(informative)Discussion of intermediate-time HEMP coupling for long lines.26 B.1
13、 General.26 B.2 Elevated line coupling.26 B.3 Buried line coupling.26 Annex C(informative)Responses of simple linear antennas to the IEC early-time HEMP environment.28 C.1 Overview.28 C.2 IEC early-time HEMP environment.28 C.3 Evaluation of the antenna responses.31 C.3.1 General.31 C.3.2 Monopole an
14、tenna.31 C.3.3 Dipole antenna.32 C.4 Calculated results.33 C.5 Summary of results.34 Annex D(informative)Measured cable currents inside telephone buildings.43 Annex E(informative)Time waveform description for the responses of simple linear antennas to the early-time HEMP environment.44 E.1 General.4
15、4 E.2 Description of the recommended waveform.44 E.3 Procedure for determining the test waveform.46 Bibliography.47 Figure 1 Geometry for the definition of polarization and of the angles of elevation and azimuth .9 Figure 2 Geometry for the definition of the plane wave.10 Figure 3 Geomagnetic dip an
16、gle.11 Figure 4 Three-phase line and equivalent circuit for computing late-time HEMP conducted current.16 IEC 61000-2-10:2021 IEC 2021 3 Figure 5 Centre-loaded dipole antenna of length l and radius a,excited by an incident early-time HEMP field.18 Figure A.1 Variation of peak coupled cable current versus local geomagnetic dip angle.23 Figure C.1 Illustration of the incident HEMP field.29 Figure C.2 HEMP tangent radius Rt defining the illuminated region,shown as a function of burst height(HOB).29
