EN 61000-4-7-2002 en Electromagnetic compatibility (EMC) Part 4-7 Testing and measurement techniques - General guide on harmonics and interharmonics measurements and instrumentatio.pdf

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1、BRITISHSTANDARDBSEN 61000-4-7:2002IncorporatingCorrigendaAugust 2004, May 2005 and November 2011Electromagnetic compatibility (EMC) Part 4-7: Testing and measurement techniques General guide on harmonics and interharmonics measurementsandinstrumentation,for power supply systems and equipment connect

2、ed theretoICS 33.100.10; 33.100.20nullnull nullnullnullnullnullnullnull nullnullnullnullnullnullnull nullnullnull nullnullnullnullnullnullnullnullnullnull nullnullnullnullnullnull nullnull nullnullnullnullnullnullnullnullnull nullnull nullnullnullnullnullnullnullnullnull nullnullnull+A1:2009 Nationa

3、l forewordThis British Standard is the UK implementation of EN 61000-4-7:2002+A1:2009. It identical with IEC 61000-4-7:2002 incorporating amendment 1:2009. It supersedes BS EN 61000-4-7:2002, which will be withdrawn on 1 March 2012.The start and finish of text introduced or altered by amendment is i

4、ndicated in the text by tags. Tags indicating changes to IEC text carry the number of the IEC amendment. For example, text altered by IEC amendment 1 is indicated by !“.The UK participation in its preparation was entrusted by Technical Committee GEL/210, EMC Policy committee, to Subcommittee GEL/210

5、/8, EMC Low frequency standards.A list of organizations represented on this subcommittee can be obtained on request to its secretary.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application.Compliance with a British St

6、andard cannot confer immunity from legal obligations.BS EN 61000-4-7:2002+A1:2009This British Standard was published under the authority of the Standards Policy and Strategy Committee on 29 January 2003 BSI 2011Amendments/corrigenda issued since publicationAmd. No. Date Comments 15316Corrigendum No.

7、 118 August 2004Correction to Subclause 3.115665Corrigendum No. 29 May 2005 Correction to text in Subclause 3.130 June 2009 Replacement of Annex ZA30 November 2011Correction to IEC amendment 1:2008 with CENELEC endorsement A1:2009ISBN 978 0 580 77234 4EUROPEAN STANDARD EN 61000-4-7NORME EUROPENNEEUR

8、OPISCHE NORMCENELECEuropean Committee forElectrotechnicalStandardizationComitEuropendeNormalisationElectrotechniqueEuropisches Komitee frElektrotechnischeNormungCentral Secretariat:rue de Stassart35, B-1050 Brussels2002 CENELEC- Allrightsofexploitationinany form and by any means reserved worldwidefo

9、r CENELECmembers.Ref.No. EN 61000-4-7:2002 EICS33.100.10; 33.100.20 Supersedes EN 61000-4-7:1993EnglishversionElectromagnetic compatibility(EMC) Part 4-7: Testing andmeasurement t echniques -General guide on harmonics and interharmonicsmeasurements and instrumentation,for powersupplysystems and equi

10、pment connected thereto(IEC 61000-4-7:2002)Compatibilit lectromagntique(C EM)Partie4-7:Techniques dessaiet de mesure -Guide gnralrelatifaux mesuresdharmoniques et dinterharmoniques,ainsiqulappareillage de mesur e,applicableaux rseaux dalimentationet auxappareils qui ysont raccords(CEI 61000-4-7:2002

11、)ElektromagnetischeVertrglichkeit (EMV)Teil 4-7: Prf-und Messverfahren -Allgemeiner Leitfaden fr Verfahrenund Gertezur MessungvonOberschwingungen undZwischenharmonischeninStromversorgungsnetzen undangeschlossenenGerten(IEC 61000-4-7:2002)This European Standardwas approved by CENELEC on 2002-10-01. C

12、ENELEC membersare bound tocomply with the CEN/CENELECInternalRegulations which stipulate theconditions for giving this EuropeanStandardthe statusofanationalstandard without any alteration.Up-to-date lists and bibliographical referencesconcerning such national standards may be obtained onapplicationt

13、othe Central Secretariat or to any CENELECmember.This EuropeanStandardexistsinthree official versions (English,French, German).Aversion in any otherlanguage made by translation under the responsibility of aCENELEC member into its ownlanguage andnotified to the Central Secretariat has the same status

14、asthe official versions.CENELECmembersare thenational electrotechnicalcommittees of Austria, Belgium, Czech Republic,Denmark, Finland, France, Germany,Greece, Hungary,Iceland, Ireland, Italy,Luxembourg,Malta,Netherlands, Norway,Portugal, Slovakia, Spain, Sweden, Switzerland and United Kingdom.:2002+

15、A1March 2009ForewordThetextofdocument 77A/382/FDIS, futureedition 2ofIEC 61000-4-7, prepared by SC 77A, Lowfrequencyphenomena, of IEC TC 77, Electromagnetic compatibility, was submittedtotheIEC-CENELECparallelvoteand was approved byCENEL EC as EN 61000-4-7on2002-10-01.This European Sta ndardsupersed

16、es EN 61000-4-7:1993.Thefollowing dat es werefixed:latestdate bywhichthe EN has to be implementedat national levelbypublication of an identicalnationalstandardorbyendorsement (dop) 2003-07-01latestdate bywhichthe national standardsconflictingwiththe EN have to be withdrawn(dow) 2005-10-01Annexes des

17、ignated “normative“are partofthe bodyof the standard.Annexes designated “informative“are givenfor informationonly.In this standard, annexZAisnormative andannexes A, Band Care informative.Annex ZA hasbeenadded byCENELEC._EndorsementnoticeThetextofthe International Sta ndardIEC 61000-4-7:2002 wasappro

18、vedbyCENELEC as aEuropeanStandardwithout anymodification.In the official version, forBibliography,the followingnotes have to be addedfor the standardsindicated:IEC 61000-3 (Series)NOTE Partly harmonized in EN 61000-3 series (not modified).IEC 61010-1 NOTE Harmonized as EN 61010-1:2001 (not modified)

19、._Foreword to amendment 1Thetextofdocument 77A/645/FDIS, futureamendment1to IEC61000-4-7:2002, prepared bySC77A,Lowfrequencyphenomena, of IECTC77,Electromagnetic compatibility, was submitted to theIEC-CENELEC parallel vote and was approved byCENELEC as amendmentA1 to EN61000-4-7:2002on 2009-03-01.Th

20、efollowing dates werefixed:latestdatebywhich theamendment has to beimplementedatnational levelbypublicationofan identical nationalstandard or byendorsement (dop) 2009-12-01latestdatebywhich thenationalstandards conflictingwith the amendment have to be withdrawn (dow)2012-03-01Annex ZA hasbeenadded b

21、yCENELEC._EndorsementnoticeThetextofamendment1:2008 to theInternational StandardIEC61000-4-7:2002 wasapproved byCENELEC as an amendmenttothe EuropeanStandardwithoutanymodification._2BS EN 61000-4-7:2002+A1:2009 EN 61000-4-7:2002+A1:2009 (E)CONTENTSINTRODUCTION51Scope. 6.2Normatvie references6.3Defin

22、itions,symoblsand idnices.7.3.1Definitoinsrelatef ot drqeneucyaanlysis7.3.2Definitiosn relatedtoharmonics. 8.3.3Definitiosn relatedtodisotrtion factors. 9.3.4Definitiosn relatedtoinetrharmonics 013.5N s.113.5.1Symoblsand abbreviations113.5.2Idnices.214Geenrla concpetsadn commonruqeirementsfor alltyp

23、es of instrumnetatoin214.1Characteristics fo thesiganl to be maesured . 214.2 Accuracy classesfoinstrumne tation 214.3Typse fo maesurement214.4 Geenral structurefothe instrumnet314.4.1Maininstrument.314.4.2Post-processing aprst415Harmonicmaeserumenst515.1Curretn ipnuticrcuit.515.2Voltag 515.3Accurac

24、yreuqiremstne5.4 Measuremtne set-pu foremissionassessmnet.715.5Assessmtne foharmonciemissions .815.5.1Groupinagnd smoothing915.5.2Compilancewihtemissinolimits.025.6 Assessmtne fo voltageahrmoncisubgroups 026Othre naalysisprinciples.027Trnasitioanl period128Geenral 12AnnexA(informative)eMasuremenfoti

25、nterahrmonics.22AnnxeB(informatvi)eeMasuremenstabove theahrmocin frqeuencyrnaegputo9kHz.42AnnexC(informative)Tecnhicalconsideratiosn forgruopingmethod.62BibliographyFigure 1Generalstructureofthe measuringinstrument.14Figure 2Measurement set-up forsingle-phase emissionmeasurement 17Figure3Measurement

26、 set-up forthree-phase emission measurements17INTRODUCTION51Scope. .62Normative references.63Definitions,symbolsand indices73.1Definitionsrelatedtofrequencyanalysis.73.2Definitions relatedtoharmonics83D itions relatedtodistortion factors. .94D it ns ointerharmonics105Notations.113.5.1 Symbols 113.5.

27、2 Subscripts 124General conceptsand commonrequirementsfor alltypes of instrumentation124.1Characteristics of thesignal to be measured . 124.2Accuracyclasses of instrumentation123Types of measurement124.4General structureofthe instrument. . 134.4.1Maininstrument.134.4.2Post-processing parts145Harmoni

28、cmeasurements155.1Current inputcircuit.155.2Voltage inputcircuit.153Accuracyrequirements165.4 Measurement set-up and supply voltage175.5 Assessment of harmonic emissions .195.5.1 Grouping and smoothing5.5.2 Compliance with emission limits.215.6 Assessment of voltage harmonic subgroups 216 Other anal

29、ysis principles.227 Transitional period228 General 23Annex A (informative) Measurement of interharmonics.24Annex B (informative) Measurements above the harmonic frequency range up to 9 kHz.26Annex C (informative) Technical considerations for grouping method.Annex ZA (normative) Normative references

30、to international publications with theircorresponding European publications.3BS EN 61000-4-7:2002+A1:2009 EN 61000-4-7:2002+A1:2009 (E)20314041Figure 4 Illustration of harmonic and interharmonic groups (here shown for a 50-Hzsupply)Figure 5 Realisation of a digital low-pass filter: z-1 designates a

31、window width delay, and are the filter coefficients (see Table 2 for values) .Figure 6Illust rationofaharmo nicsubgroup and an interharmonic centred subgroup(here shown for a 50 Hz supply)22Figure B.1 Illustration of frequency bands for measurement in the range above the 40th27Figure C.1 Large 5th h

32、armonic current fluctuationFigure C.2 Large 5th harmonic voltage fluctuationFigure C.3 Fluctuating 3rd harmonic current of a micro-wave appliance.35Figure C.4 Communication signal of 178 Hz together with 3rd and 5th harmonics 36Figure C.5 Interharmonic at 287 Hz, 5th and 6th harmonic.36Figure C.6 Mo

33、dulated 5th harmonic and interharmonic at 287 Hz.38Figure C.7 Component vectors at frequencies of 245 Hz and 255Hz.39Table1Accuracyrequirementsfor current,voltage andpower measurements 16Table2Smoothing filter coefficients accordingtothe window width.214BS EN 61000-4-7:2002+A1:2009 EN 61000-4-7:2002

34、+A1:2009 (E)20203434harmonic order for 50 Hz power system up to 9 kHz Figure B.2 General measurement setup 28Figure B.3 Artificial mains network for 16-A current and below . 29Figure B.4 Artificial mains network impedance viewed by the EUT .30INTRODUCTIONIEC61000ispublished inseparate parts, accordi

35、ngtothe following structure:Part 1: GeneralGeneral considera tions (introducti on,fundamental p rinciples)Definitions,terminologyPart 2: EnvironmentDescriptionofthe environmentClassificationofthe environmentCompatibility levelsPart 3: LimitsEmission limitsImmunity limits (in so farastheydonot fall u

36、nder theresponsibilityofthe productcommittees)Part 4: Testingand measurementtechniquesMeasurement techniquesTestingtechniquesPart 5: Installation andmitigation guidelinesInstallationguidelinesMitigationmethods anddevicesPart 6: GenericstandardsPart 9: MiscellaneousEach part is furthersubdivided into

37、severalparts,published eitherasInternational Standardsor as technical specifications or technicalreports,someofwhich have alreadybeen publishedas sections. Otherwill be published with the part numberfollowed by adashand asecondnumberidentifying thesubdivision (example:61000-6-1).Thesepublicationswil

38、l be published in chronological orderand numbered accordingly.This part is an InternationalStandard forthe measurementofharmoniccurrentsand voltagesin powersupplysystems andharmoniccurrents emittedbyequipment. It also specifiestheperformanceofastandardmeasuringinstrument.5BS EN 61000-4-7:2002+A1:200

39、9 EN 61000-4-7:2002+A1:2009 (E)ELECTROMAGNETICCOMPATIBILITY (EMC)Part 4-7: Testingand measurement techniquesGeneral guide on harmonics andinterharmonics measurementsandinstrumentation,for power supplysystemsandequipment connected thereto1ScopeThis part of IEC61000 is applicable to instrumentation in

40、tendedfor measuringspectralcomponents in the frequency rangeupto9kHzwhich aresuperimposed on thefundamentalof the powersupplysystems at 50 Hz and 60 Hz.For practical considerations, thisstandarddistinguishesbetween harmonics, interharmonics and othercomponentsabove theharmonicfrequencyrange, up to 9

41、kHz.This standarddefinesthe measurementinstrumentation intended fortesting individualitemsof equipmentinaccordance with e mission limits given in certainstandards(forexample,harmoniccurrent limits asgiveninIEC 61000-3-2)aswellasfor the measurementofharmonic currentsand voltages in actualsupplysystem

42、s.Instrumentationfor measurementsabove theharmonicfrequency range,upto9kHzistentativelydefined(seeAnnexB).NOTE1 This document deals in detailwithinstruments based on thediscreteFouriertransform.NOTE2 Thedescription of thefunctions andstructure of themeasuring instrumentsinthisstandardisveryexplicit

43、andmeant to be takenliterally.Thisisdue to thenecessity of having referenceinstrumentswithreproducible resultsirrespective of thecharacteristics of theinput signals.NOTE3 Theinstrument is defined to accommodatemeasurementsofharmonics up to the50thorder.2NormativereferencesThefollowingreferenced docu

44、mentsare indispensable forthe application of thisdocument.Fordated references,onlythe editioncited applies.For undated references,the latesteditionof thereferenced document (including anyamendments)applies.IEC60050-161, International Electrotechnical Vocabulary Chapter161:Electromagneticcompatibilit

45、yIEC61000-3-2, Electromagneticcompatibility (EMC)Part3-2:Limits Limitsfor harmoniccurrentemissions (equipmentinputcurrent 16 Aper phase)6!Text deleted“IEC 60038, IEC standard voltages IEC 61000-2-2, Electromagnetic compatibility (EMC) Part 2-2: Environment Compatibility levels for low-frequency cond

46、ucted disturbances and signalling in public low-voltage power supply systems ! “!“IEC 61000-3-12, Electromagnetic compatibility (EMC) Part 3-12: Limits Limits for harmonic currents produced by equipment connected to public low-voltage systems with input current 16 A and 75 A per phase !“BS EN 61000-

47、4-7:2002+A1:2009 EN 61000-4-7:2002+A1:2009 (E)3Definitions, symbolsand indicesForthe purposes of thispartofIEC 61000, thedefinitionsgiven in IEC60050-161(IEV)andthefollowing, apply.3.1 Definitions related to frequencyanalysis7Notations: The following notations are used in the present guide for the F

48、ourier series development because it is easier to measure phase angles by observations of the zero crossings: ()=+=110sinkkktNkcctf (1) with: =16 A and 75 A per phase shall be met: !“BS EN 61000-4-7:2002+A1:2009 EN 61000-4-7:2002+A1:2009 (E)185.5 Assessment of harmonic emissionsThefollowing relates

49、to thepost-processing partsoffigure1.a) The output voltage U shall be the rated voltage of the equipment. In the case of a voltage range, the output voltage shall be a nominal system voltage according to IEC 60038 (for example: 120 V or 230 V for single-phase or 400 V line-line for three-phase). In order to facilitate ease of measurements, for three-wire, three-phase delta connections, an artificial neutral point realized