1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationElectromagnetic compatibility(EMC)Part 4-8: Testing and measurement techniques Power frequency magnetic field immunity testBS EN 61000-4-8:2010National forewordThis British Stand
2、ard is the UK implementation of EN 61000-4-8:2010. It isidentical to IEC 61000-4-8:2009. It supersedes BS EN 61000-4-8:1994, whichwill be withdrawn on 1 February 2013.The UK participation in its preparation was entrusted by Technical CommitteeGEL/210, EMC - Policy committee, to Subcommittee GEL/210/
3、12, EMC basic,generic and low frequency phenomena Standardization.A list of organizations represented on this committee can be obtained onrequest to its secretary.This publication does not purport to include all the necessary provisions of acontract. Users are responsible for its correct application
4、. BSI 2010ISBN 978 0 580 61441 5ICS 33.100.20Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of the StandardsPolicy and Strategy Committee on 30 April 2010.Amendments issued since publicationAmd. No. Date Text af
5、fectedBRITISH STANDARDBS EN 61000-4-8:2010EUROPEAN STANDARD EN 61000-4-8 NORME EUROPENNE EUROPISCHE NORM February 2010 CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Central Secretariat:
6、 Avenue Marnix 17, B - 1000 Brussels 2010 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 61000-4-8:2010 E ICS 33.100.20 Supersedes EN 61000-4-8:1993 + A1:2001English version Electromagnetic compatibility (EMC) - Part 4-8: Testing
7、 and measurement techniques - Power frequency magnetic field immunity test (IEC 61000-4-8:2009) Compatibilit lectromagntique (CEM) - Partie 4-8: Techniques dessai et de mesure - Essai dimmunit au champ magntique la frquence du rseau (CEI 61000-4-8:2009) Elektromagnetische Vertrglichkeit (EMV) - Teil
8、 4-8: Prf- und Meverfahren - Prfung der Strfestigkeit gegen Magnetfelder mit energietechnischen Frequenzen (IEC 61000-4-8:2009) This European Standard was approved by CENELEC on 2010-02-01. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions f
9、or giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Central Secretariat or to any CENELEC member. This European Standard exists in three off
10、icial versions (English, French, German). A version in any other language made by translation under the responsibility of a CENELEC member into its own language and notified to the Central Secretariat has the same status as the official versions. CENELEC members are the national electrotechnical com
11、mittees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland a
12、nd the United Kingdom. BS EN 61000-4-8:2010EN 61000-4-8:2010 - 2 - Foreword The text of document 77A/694/FDIS, future edition 2 of IEC 61000-4-8, prepared by SC 77A, Low frequency phenomena, of IEC TC 77, Electromagnetic compatibility, was submitted to the IEC-CENELEC parallel vote and was approved
13、by CENELEC as EN 61000-4-8 on 2010-02-01. This European Standard supersedes EN 61000-4-8:1993 + A1:2001. EN 61000-4-8:2010 includes the following significant technical changes with respect to EN 61000-4-8:1993: the scope is extended in order to cover 60 Hz. Characteristics, performance and verificat
14、ion of the test generator and related inductive coils are revised. Modifications are also introduced in the test set-up (GRP) and test procedure. The following dates were fixed: latest date by which the EN has to be implemented at national level by publication of an identical national standard or by
15、 endorsement (dop) 2010-11-01 latest date by which the national standards conflicting with the EN have to be withdrawn (dow) 2013-02-01 Annex ZA has been added by CENELEC. _ Endorsement notice The text of the International Standard IEC 61000-4-8:2009 was approved by CENELEC as a European Standard wi
16、thout any modification. In the official version, for Bibliography, the following notes have to be added for the standards indicated: IEC 60068-1 NOTE Harmonized as EN 60068-1. IEC 61000-2-4 NOTE Harmonized as EN 61000-2-4. _ BS EN 61000-4-8:2010- 3 - EN 61000-4-8:2010 Annex ZA (normative) Normative
17、references to international publications with their corresponding European publications 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 referenced docume
18、nt (including any amendments) applies. NOTE When an international publication has been modified by common modifications, indicated by (mod), the relevant EN/HD applies. Publication Year Title EN/HD Year IEC 60050-161 - International Electrotechnical Vocabulary (IEV) - Chapter 161: Electromagnetic co
19、mpatibility - - BS EN 61000-4-8:2010 2 61000-4-8 IEC:2009 CONTENTS INTRODUCTION.6 1 Scope.7 2 Normative references .7 3 Terms and definitions .7 4 General 8 5 Test levels9 6 Test equipment.10 6.1 General .10 6.2 Test generator.10 6.2.1 Current source.10 6.2.2 Characteristics and performances of the
20、test generator for different inductive coils10 6.2.3 Verification of the characteristics of the test generator 11 6.3 Inductive coil .12 6.3.1 Field distribution12 6.3.2 Characteristics of the inductive standard coils 1 m 1 m and 1 m 2,6 m .12 6.3.3 Characteristics of the inductive coils for table t
21、op and floor standing equipment .12 6.3.4 Measurement of the inductive coil factor13 6.4 Test and auxiliary instrumentation .13 6.4.1 Test instrumentation13 6.4.2 Auxiliary instrumentation .14 7 Test set-up .14 7.1 Test set-up components 14 7.2 Ground (reference) plane for floor standing equipment14
22、 7.3 Equipment under test 14 7.4 Test generator.15 7.5 Inductive coil .15 8 Test procedure .15 8.1 General .15 8.2 Laboratory reference conditions 15 8.2.1 General .15 8.2.2 Climatic conditions 15 8.2.3 Electromagnetic conditions16 8.3 Carrying out the test16 9 Evaluation of the test results 17 10 T
23、est report17 Annex A (normative) Inductive coil calibration method .22 Annex B (normative) Characteristics of the inductive coils .23 Annex C (informative) Selection of the test levels 29 Annex D (informative) Information on power frequency magnetic field strength 31 Bibliography33 BS EN 61000-4-8:2
24、01061000-4-8 IEC:2009 3 Figure 1 Example of application of the test field by the immersion method 18 Figure 2 Example of schematic circuit of the test generator for power frequency magnetic field .18 Figure 3 Example of test set-up for table-top equipment 19 Figure 4 Calibration of the standard coil
25、s .19 Figure 5 Example of test set-up for floor-standing equipment.20 Figure 6 Example of investigation of susceptibility to magnetic field by the proximity method with the 1 m 1 m inductive coil.20 Figure 7 Illustration of Helmholtz coils .21 Figure B.1 Characteristics of the field generated by a s
26、quare inductive coil (1 m side) in its plane .25 Figure B.2 3 dB area of the field generated by a square inductive coil (1 m side) in its plane 25 Figure B.3 3 dB area of the field generated by a square inductive coil (1 m side) in the mean orthogonal plane (component orthogonal to the plane of the
27、coil) 26 Figure B.4 3 dB area of the field generated by two square inductive coils (1 m side) 0,6 m spaced, in the mean orthogonal plane (component orthogonal to the plane of the coils).26 Figure B.5 3 dB area of the field generated by two square inductive coils (1 m side) 0,8 m spaced, in the mean
28、orthogonal plane (component orthogonal to the plane of the coils).27 Figure B.6 3 dB area of the field generated by a rectangular inductive coil (1 m 2,6 m) in its plane 27 Figure B.7 3 dB area of the field generated by a rectangular inductive coil (1 m 2,6 m) in its plane (ground plane as a side of
29、 the inductive coil) 28 Figure B.8 3 dB area of the field generated by a rectangular inductive coil (1 m 2,6 m) with ground plane, in the mean orthogonal plane (component orthogonal to the plane of the coil) 28 Table 1 Test levels for continuous field 9 Table 2 Test levels for short duration: 1 s to
30、 3 s.10 Table 3 Specification of the generator for different inductive coils 11 Table 4 Verification parameter for the different inductive coils .11 Table D.1 Values of the maximum magnetic field produced by household appliances (results of the measurements of 100 different devices of 25 basic types
31、) 31 Table D.2 Values of the magnetic field generated by a 400 kV line 31 Table D.3 Values of the magnetic field in high voltage sub-station areas 32 Table D.4 Values of the magnetic field in power plants 32 BS EN 61000-4-8:2010 6 61000-4-8 IEC:2009 INTRODUCTION This standard is part of the IEC 6100
32、0 series of standards, according to the following structure: Part 1: General General considerations (introduction, fundamental principles) Definitions, terminology Part 2: Environment Description of the environment Classification of the environment Compatibility levels Part 3: Limits Emission limits
33、 Immunity limits (in so far as they do not fall under the responsibility of the product committees) Part 4: Testing and measurement techniques Measurement techniques Testing techniques Part 5: Installation and mitigation guidelines Installation guidelines Mitigation methods and devices Part 9: Misce
34、llaneous Each part is further subdivided into several parts, published either as international standards, as technical specifications or technical reports, some of which have already been published as sections. Others will be published with the part number followed by a dash and a second number iden
35、tifying the subdivision (example: IEC 61000-6-1). This part is an international standard which gives immunity requirements and test procedures related to “power frequency magnetic field“. BS EN 61000-4-8:201061000-4-8 IEC:2009 7 ELECTROMAGNETIC COMPATIBILITY (EMC) Part 4-8: Testing and measurement t
36、echniques Power frequency magnetic field immunity test 1 Scope This part of IEC 61000 relates to the immunity requirements of equipment, only under operational conditions, to magnetic disturbances at power frequencies 50 Hz and 60 Hz related to: residential and commercial locations; industrial insta
37、llations and power plants; medium voltage and high voltage sub-stations. The applicability of this standard to equipment installed in different locations is determined by the presence of the phenomenon, as specified in Clause 4. This standard does not consider disturbances due to capacitive or induc
38、tive coupling in cables or other parts of the field installation. Other IEC standards dealing with conducted disturbances cover these aspects. The object of this standard is to establish a common and reproducible basis for evaluating the performance of electrical and electronic equipment for househo
39、ld, commercial and industrial applications when subjected to magnetic fields at power frequency (continuous and short duration field). The standard defines: recommended test levels; test equipment; test set-up; test procedure. 2 Normative references The following referenced documents are indispensab
40、le for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. IEC 60050(161), International Electrotechnical Vocabulary (IEV) Chapter 161: Electro-magnetic compa
41、tibility 3 Terms and definitions For the purposes of this document the following terms and definitions apply to the restricted field of magnetic disturbances as well as the terms and definitions from IEC 60050(161) IEV. 3.1 current distortion factor ratio of the root-mean square value of the harmoni
42、cs content of an alternating current to the root-mean square value of the fundamental current BS EN 61000-4-8:2010 8 61000-4-8 IEC:2009 3.2 EUT equipment under test 3.3 inductive coil conductor loop of defined shape and dimensions, in which flows a current, generating a magnetic field of defined con
43、stancy in its plane and in the enclosed volume 3.4 inductive coil factor ratio between the magnetic field strength generated by an inductive coil of given dimensions and the corresponding current value; the field is that measured at the centre of the coil plane, without the EUT 3.5 immersion method
44、method of application of the magnetic field to the EUT, which is placed in the centre of an inductive coil (see Figure 1) 3.6 proximity method method of application of the magnetic field to the EUT, where a small inductive coil is moved along the side of the EUT in order to detect particularly sensi
45、tive areas 3.7 ground (reference) plane GRP flat conductive surface whose potential is used as a common reference for the magnetic field generator and the auxiliary equipment (the ground plane can be used to close the loop of the inductive coil, as in Figure 5) IEV 161-04-36, modified 3.8 decoupling
46、 network, back filter electrical circuit intended to avoid reciprocal influence with other equipment not submitted to the magnetic field immunity test 4 General The magnetic fields to which equipment is subjected may influence the reliable operation of equipment and systems. The following tests are
47、intended to demonstrate the immunity of equipment when subjected to power frequency magnetic fields related to the specific location and installation condition of the equipment (e.g. proximity of equipment to the disturbance source). The power frequency magnetic field is generated by power frequency
48、 current in conductors or, more seldom, from other devices (e.g. Ieakage of transformers) in the proximity of equipment. As for the influence of nearby conductors, one should differentiate between: the current under normal operating conditions, which produces a steady magnetic field, with a comparat
49、ively small magnitude; BS EN 61000-4-8:201061000-4-8 IEC:2009 9 the current under fault conditions which can produce comparatively high magnetic fields but of short duration, until the protection devices operate (a few milliseconds with fuses, a few seconds for protection relays). The test with a steady magnetic field may apply to all types of equipment intended for public or industrial low voltage distribu
