1、BSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06Sound system equipmentPart 3: AmplifiersBS EN IEC 602683:2018EUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN IEC 60268-3June 2018ICS 33.160.10 Supersedes EN 60268-3:2013 English VersionSound system equipment - Part 3:
2、 Amplifiers(IEC 60268-3:2018)Equipements pour systmes lectroacoustiques - Partie 3:amplificateurs(IEC 60268-3:2018)Elektroakustische Gerte - Teil 3: Verstrker(IEC 60268-3:2018)This European Standard was approved by CENELEC on 2018-05-30. CENELEC members are bound to comply with the CEN/CENELECIntern
3、al Regulations which stipulate the conditions for 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 CEN-CENELEC Management Centre or to any CE
4、NELEC member.This European Standard exists in three official 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 CEN-CENELEC Management Centre has thesame status as the official
5、 versions.CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,Lithuania, Luxembourg, Malta,
6、the Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden,Switzerland, Turkey and the United Kingdom.European Committee for Electrotechnical StandardizationComit Europen de Normalisation ElectrotechniqueEuropisches Komitee fr Elektrotechnische NormungCEN-CENELEC M
7、anagement Centre: Rue de la Science 23, B-1040 Brussels 2018 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.Ref. No. EN IEC 60268-3:2018 ENational forewordThis British Standard is the UK implementation of EN IEC 602683:2018. It is identical to
8、IEC 602683:2018. It supersedes BS EN 602683:2013, which will be withdrawn on 30 May 2021.The UK participation in its preparation was entrusted to Technical Committee EPL/100, Audio, video and multimedia systems and equipment.A list of organizations represented on this committee can be obtained on re
9、quest to its secretary.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2018 Published by BSI Standards Limited 2018ISBN 978 0 580 96620 0ICS 33.160.10Compliance with a Britis
10、h Standard cannot confer immunity from legal obligations. This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 June 2018.Amendments/corrigenda issued since publicationDate Text affectedBRITISH STANDARDBS EN IEC 602683:2018EUROPEAN STANDARD NORM
11、E EUROPENNE EUROPISCHE NORM EN IEC 60268-3 June 2018 ICS 33.160.10 Supersedes EN 60268-3:2013 English Version Sound system equipment - Part 3: Amplifiers (IEC 60268-3:2018) Equipements pour systmes lectroacoustiques - Partie 3: amplificateurs (IEC 60268-3:2018) Elektroakustische Gerte - Teil 3: Vers
12、trker (IEC 60268-3:2018) This European Standard was approved by CENELEC on 2018-05-30. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date l
13、ists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CENELEC member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
14、 under the responsibility of a CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions. CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic, Denmark
15、, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. Europ
16、ean Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels 2018 CENELEC All rights of exploitation in any form and by any means reserved world
17、wide for CENELEC Members. Ref. No. EN IEC 60268-3:2018 E BS EN IEC 602683:2018EN IEC 60268-3:2018 (E) 2 European foreword The text of document 100/2960/CDV, future edition 5 of IEC 60268-3, prepared by IEC/TC 100 “Audio, video and multimedia systems and equipment“ was submitted to the IEC-CENELEC pa
18、rallel vote and approved by CENELEC as EN IEC 60268-3:2018. The following dates are fixed: latest date by which the document has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2019-02-28 latest date by which the national standards conflic
19、ting with the document have to be withdrawn (dow) 2021-05-30 This document supersedes EN 60268-3:2013. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CENELEC shall not be held responsible for identifying any or all such patent ri
20、ghts. Endorsement notice The text of the International Standard IEC 60268-3:2018 was approved by CENELEC as a European Standard without any modification. In the official version, for Bibliography, the following notes have to be added for the standards indicated: IEC 61606 series NOTE Harmonized as E
21、N 61606 series. IEC 60268-5:2003 NOTE Harmonized as EN 60268-5:2003. IEC 60268-5:2003/A1:2007 NOTE Harmonized as EN 60268-5:2003/A1:2009. BS EN IEC 602683:2018EN IEC 60268-3:2018 (E) 3 Annex ZA (normative) Normative references to international publications with their corresponding European publicati
22、ons The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) ap
23、plies. NOTE 1 Where an International Publication has been modified by common modifications, indicated by (mod), the relevant EN/HD applies. NOTE 2 Up-to-date information on the latest versions of the European Standards listed in this annex is available here: www.cenelec.eu. Publication Year Title EN
24、/HD Year IEC 60065 (mod) 2014 Audio, video and similar electronic apparatus - Safety requirements EN 60065 2014 - - + A11 2017 IEC 60268-1 1985 Sound system equipment - Part 1: General HD 483.1 S2 1989 + A1 1988 - - + A2 1988 - - IEC 60268-2 1987 Sound system equipment - Part 2: Explanation of gener
25、al terms and calculation methods HD 483.2 S2 1993 + A1 1991 - - IEC 60417 2002 Graphical symbols for use on equipment - - IEC 60958 series Digital audio interface EN 60958 series IEC 61000-4-13 2002 Electromagnetic compatibility (EMC) - Part 4-13: Testing and measurement techniques - Harmonics and i
26、nterharmonics including mains signaling at a.c. power port, low frequency immunity tests EN 61000-4-13 2002 + A1 2009 + A1 2009 + A2 2015 + A2 2016 IEC 61000-4-17 1999 Electromagnetic compatibility (EMC) - Part 4-17: Testing and measurement techniques - Ripple on d.c. input power port immunity test
27、EN 61000-4-17 1999 + A1 2001 + A1 2004 + A2 2008 + A2 2009 IEC 61000-4-29 2000 Electromagnetic compatibility (EMC) - Part 4-29: Testing and measurement techniques - Voltage dips, short interruptions and voltage variations on d.c. input power port immunity tests EN 61000-4-29 2000 IEC 61606-1 2009 Au
28、dio and audiovisual equipment - Digital audio parts - Basic measurement methods of audio characteristics - Part 1: General EN 61606-1 2009 IEC 61883-6 2014 Consumer audio/video equipment - Digital interface - Part 6: Audio and music data transmission protocol EN 61883-6 2014 IEC 61938 2013 Multimedi
29、a systems - Guide to the recommended characteristics of analogue interfaces to achieve interoperability EN 61938 2013 BS EN IEC 602683:2018 2 IEC 60268-3:2018 IEC 2018 CONTENTS FOREWORD . 5 1 Scope 7 2 Normative references 7 3 Terms, definitions and rated values . 8 3.1 Terms and definitions 8 3.2 R
30、ated values . 9 4 Conditions . 9 4.1 Rated conditions and standard measuring conditions 9 4.1.1 Overview . 9 4.1.2 Rated conditions 10 4.1.3 Standard measuring conditions 11 4.2 Other conditions 11 5 Classes of operation 11 6 Interchangeable parts 11 7 Automatic controls . 11 8 Power supply . 12 9 P
31、osition of the volume controls 12 10 Pre-conditioning for measurements . 12 11 Series of measurements 12 12 Variable consumption apparatus 13 13 Marking . 13 14 Operating environment 13 15 Characteristics to be specified, and their methods of measurement . 14 15.1 Power supply characteristics . 14 1
32、5.1.1 Characteristics to be specified . 14 15.1.2 Method of measurement 14 15.2 Tolerance of (long-term) power supply voltage variations 14 15.2.1 Characteristic to be specified . 14 15.2.2 Methods of measurement 15 15.3 Tolerance of power supply frequency variations 16 15.3.1 Characteristics to be
33、specified . 16 15.3.2 Methods of measurement 16 15.4 Tolerance of power supply harmonics and ripple . 16 15.4.1 Characteristics to be specified . 16 15.4.2 Methods of measurement 17 15.5 Input characteristics 17 15.5.1 Rated source impedance, characteristic to be specified . 17 15.5.2 Input impedanc
34、e 17 15.5.3 Rated source e.m.f., characteristic to be specified . 19 15.5.4 Minimum source e.m.f. for rated distortion-limited output voltage . 19 15.6 Output characteristics . 19 15.6.1 Rated load impedance, characteristic to be specified . 19 15.6.2 Output source impedance 20 15.6.3 Output voltage
35、 and power (distortion-limited) . 21 15.6.4 Maximum effective output power (distortion-limited at 10 %) 22 BS EN IEC 602683:2018IEC 60268-3:2018 IEC 2018 3 15.6.5 Regulation . 23 15.6.6 Overload restoring time . 24 15.7 Limiting characteristics . 24 15.7.1 Overload source e.m.f. 24 15.7.2 Short-term
36、 maximum output voltage and power . 25 15.7.3 Long-term maximum output voltage and power 25 15.7.4 Temperature-limited output power . 26 15.8 Characteristics of protection circuits . 27 15.8.1 General . 27 15.8.2 Protection against potentially damaging combinations of output voltage and current 28 1
37、5.8.3 Characteristics of d.c. offset protection circuits 29 15.9 Sustaining-time for rated (distortion-limited) output voltage or power 30 15.9.1 General . 30 15.9.2 Characteristic to be specified . 31 15.9.3 Method of measurement 31 15.10 Gain 31 15.10.1 Voltage gain and e.m.f. gain 31 15.10.2 Maxi
38、mum e.m.f. gain . 32 15.10.3 Attenuation characteristic of the volume control . 32 15.10.4 Attenuation characteristic of balance controls for multi-channel equipment 33 15.11 Response . 33 15.11.1 Gain-frequency response . 33 15.11.2 Gain-limited effective frequency range . 34 15.11.3 Distortion-lim
39、ited effective frequency range . 34 15.11.4 Phase-frequency response 34 15.12 Amplitude non-linearity . 35 15.12.1 General . 35 15.12.2 Rated total harmonic distortion, characteristic to be specified 35 15.12.3 Total harmonic distortion under standard measuring conditions . 35 15.12.4 Total harmonic
40、 distortion as a function of amplitude and frequency . 36 15.12.5 Harmonic distortion of the nth order under standard measuring conditions 36 15.12.6 Harmonic distortion of the nth order as a function of amplitude and frequency 37 15.12.7 Modulation distortion of the nth order (where n = 2 or n = 3)
41、 38 15.12.8 Difference-frequency distortion of the nth order (where n = 2 or n = 3) . 40 15.12.9 Dynamic intermodulation distortion (DIM) 41 15.12.10 Total difference frequency distortion 43 15.12.11 Weighted total harmonic distortion . 44 15.13 Noise 45 15.13.1 Characteristic to be specified . 45 1
42、5.13.2 Method of measurement 45 15.14 Hum 46 15.14.1 General . 46 15.14.2 Characteristics to be specified . 46 15.14.3 Method of measurement 46 15.15 Balanced inputs and outputs . 47 15.15.1 Balance of the input . 47 BS EN IEC 602683:2018 4 IEC 60268-3:2018 IEC 2018 15.15.2 Overload (distortion-limi
43、ted) peak-to-peak common-mode input voltage . 48 15.15.3 Balance of the output . 49 15.16 Cross-talk and separation in multi-channel amplifiers 50 15.16.1 Characteristics to be specified . 50 15.16.2 Method of measurement 50 15.17 Gain and phase differences between channels in multi-channel amplifie
44、rs 51 15.17.1 Gain difference 51 15.17.2 Phase difference 52 15.18 Dimensions and mass, characteristics to be specified . 52 Annex A (informative) Balanced interfaces . 59 Annex B (informative) Specification of a multi-channel amplifier. 60 B.1 General . 60 B.2 Example specification of a 5.1 channel
45、 amplifier . 60 B.3 Example specification of a 5 channel amplifier 60 Bibliography 62 Figure 1 Example block diagram for multi-channel amplifier . 53 Figure 2 Connection diagram of equipment for digital input 53 Figure 3 Arrangements for the Class D amplifier 54 Figure 4 Arrangements for measuring i
46、nput impedance 54 Figure 5 Oscillogram when measuring overload restoring time . 55 Figure 6 Protection against potentially damaging combinations of output voltage and current 56 Figure 7 Arrangement for combining two input signals . 57 Figure 8 Frequency spectrum below 30 kHz of the signal for measu
47、ring dynamic intermodulation distortion 57 Figure 9 Arrangement for measuring the balance of a balanced input 58 Figure 10 Arrangement for measuring the internal impedance balance of a balanced output . 58 Figure 11 Arrangement for measuring the voltage symmetry of a balanced output . 58 Figure B.1
48、Block diagram for a 5.1 channel surround amplifier . 60 Figure B.2 Block diagram for a 5 channel surround amplifier 61 Table 1 Different rated total harmonic distortion and rated distortion-limited output power specifications for the same amplifier . 30 Table 2 Distortion components due to dynamic i
49、ntermodulation distortion falling in the frequency range up to 20 kHz . 41 BS EN IEC 602683:2018IEC 60268-3:2018 IEC 2018 5 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ SOUND SYSTEM EQUIPMENT Part 3: Amplifiers FOREWORD 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international co-operation on all qu
