IEC 60704-2-4-2011 Household and similar electrical appliances - Test code for the determination of airborne acoustical noise - Part 2-4 Particular requirements.pdf

1、 IEC 60704-2-4 Edition 3.0 2011-11 INTERNATIONAL STANDARD NORME INTERNATIONALE Household and similar electrical appliances Test code for the determination of airborne acoustical noise Part 2-4: Particular requirements for washing machines and spin extractors Appareils lectrodomestiques et analogues

2、Code dessai pour la dtermination du bruit arien Partie 2-4: Exigences particulires pour les machines laver le linge et les essoreuses centrifuges IEC60704-2-4:2011 THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2011 IEC, Geneva, Switzerland All rights reserved. Unless otherwise specified, no part

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17、DARD NORME INTERNATIONALE Household and similar electrical appliances Test code for the determination of airborne acoustical noise Part 2-4: Particular requirements for washing machines and spin extractors Appareils lectrodomestiques et analogues Code dessai pour la dtermination du bruit arien Parti

18、e 2-4: Exigences particulires pour les machines laver le linge et les essoreuses centrifuges INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE Q ICS 17.140.20; 97.060 PRICE CODE CODE PRIX ISBN 978-2-88912-789-4 Registered trademark of the International Electrotechn

19、ical Commission Marque dpose de la Commission Electrotechnique Internationale 2 60704-2-4 IEC:2011 CONTENTS FOREWORD . 3 INTRODUCTION . 5 1 Scope and object 6 1.1 Scope 6 1.2 Object . 6 1.3 Measurement uncertainty 6 1.101 Standard deviation for declaration and verification 7 2 Normative references .

20、 7 3 Terms and definitions . 7 4 Measurement methods and acoustical environments 8 4.2 Direct method 8 4.3 Comparison method 9 5 Instrumentation 9 5.3 Instrumentation for measuring operating conditions . 9 6 Operation and location of appliances under test . 9 6.1 Equipping and pre-conditioning of ap

21、pliances 9 6.2 Supply of electric energy and of water or gas 9 6.4 Loading and operating of appliances during tests 10 6.5 Location and mounting of appliances . 10 6.101 Standard test programme for noise measurements 10 6.102 Standard test load for noise measurements . 10 7 Measurement of sound powe

22、r levels . 12 7.1 Microphone array, measurement surface and RSS location for essentially free-field conditions over reflecting plane(s) 12 7.4 Measurements . 12 8 Calculation of sound pressure and sound power levels . 12 8.101 Final result 12 9 Information to be recorded 13 9.2 Description of applia

23、nce under test . 13 9.7 Electric supply, water supply, etc. . 13 9.9 Operation of the appliance under test 13 9.12 Measured data 13 10 Information to be reported 13 10.3 Test conditions for the appliance . 13 10.4 Acoustical data 14 Annexes . 15 Annex A (normative) . 15 Bibliography 16 Table 101 Sta

24、ndard deviations of sound power levels for washing machines . 7 Table 102 Standard deviations of sound power levels for spin extractors . 7 Table 103 Standard deviations for declaration and verification for washing machines 7 Table 104 Standard deviations for declaration and verification for spin ex

25、tractors 7 60704-2-4 IEC:2011 3 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ HOUSEHOLD AND SIMILAR ELECTRICAL APPLIANCES TEST CODE FOR THE DETERMINATION OF AIRBORNE ACOUSTICAL NOISE Part 2-4: Particular requirements for washing machines and spin extractors FOREWORD 1) The International Electrotechnic

26、al 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 questions concerning standardization in the electrical and electronic fields. To this e

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35、blication or any other IEC Publications. 8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is indispensable for the correct application of this publication. 9) Attention is drawn to the possibility that some of the elements of this IEC Pu

36、blication may be the subject of patent rights. IEC shall not be held responsible for identifying any or all such patent rights. International Standard IEC 60704-2-4 has been prepared by subcommittee 59D: Home laundry appliances, of IEC technical committee 59: Performance of household and similar ele

37、ctrical appliances. This third edition cancels and replaces the second edition (2001). Main changes are: measurement uncertainty and standard deviations are taken into account, definitions of standard test load and standard test program are modified, test enclosure was replaced by common test enclos

38、ure defined in Part 1, information to be reported is modified. 4 60704-2-4 IEC:2011 The text of this standard is based on the following documents: CDV Report on voting 59D/379/CDV 59D/387/RVC Full information on the voting for the approval of this standard can be found in the report on voting indica

39、ted in the above table. This publication has been drafted in accordance with the ISO/IEC Directives, Part 2. This Part 2-4 is intended to be used in conjunction with the third edition (2010) of IEC 60704-1, Household and similar electrical appliances Test code for the determination of airborne acous

40、tical noise Part 1: General requirements. NOTE When “Part 1” is mentioned in this standard, it refers to IEC 60704-1. The relevant text of Part 1 as amended by this publication establishes the test code for washing machines and spin extractors. This Part 2-4 supplements or modifies the corresponding

41、 clauses in IEC 60704-1. When a particular subclause of Part 1 is not mentioned in this Part 2-4, that subclause is applicable as far as reasonable. Where this standard states “addition“, “modification“ or “replacement“, the relevant requirements, test specifications or explanatory matter in Part 1

42、should be adapted accordingly. Subclauses, tables and figures that are additional to those in Part 1 are numbered starting from 101. Additional annexes are lettered AA, BB, etc. Unless notes are in a new subclause or involve notes in Part 1, they are numbered starting from 101, including those in a

43、replaced clause or subclause. A list of all the parts in the IEC 60704 series, under the general title Household and similar electrical appliances Test code for the determination of airborne acoustical noise, can be found on the IEC website. The committee has decided that the contents of this public

44、ation will remain unchanged until the stability date indicated 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. 60704-2-4 IEC:2011 5 INTRODUCTION

45、 The measuring conditions specified in this Part 2-4 provide for sufficient accuracy in determining the noise emitted and comparing the results of measurements taken by different laboratories, whilst simulating as far as possible the practical use of household washing machines and spin extractors. I

46、t is recommended to consider the determination of noise levels as part of a comprehensive testing procedure covering many aspects of the properties and performance of household washing machines and spin extractors. NOTE As stated in the introduction to IEC 60704-1, this test code is concerned with a

47、irborne noise only. 6 60704-2-4 IEC:2011 HOUSEHOLD AND SIMILAR ELECTRICAL APPLIANCES TEST CODE FOR THE DETERMINATION OF AIRBORNE ACOUSTICAL NOISE Part 2-4: Particular requirements for washing machines and spin extractors 1 Scope and object This clause of Part 1 is applicable except as follows: 1.1 S

48、cope 1.1.1 General Addition: These particular requirements apply to single unit electrical washing machines and the washing and spinning function of combined appliances for household and similar use and to spin extractors for household and similar use. NOTE 101 For drying function, see IEC 60704-2-6

49、. 1.1.2 Types of noise Replacement: The methods specified in ISO 3743-1, ISO 3743-2 and ISO 3744 can be used for measuring noise emitted by washing machines and spin extractors. 1.1.3 Size of the source Replacement: The method specified in ISO 3744 is applicable to noise sources of any size. When applying ISO 3743-1 and ISO 3743-2, care should be taken that the maximum size of the washing machine