1、 g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58determination of airborne acoustical noise Part 3: Procedure for determining and verifying declared
2、 noise emission valuesThe European Standard EN 60704-3:2006 has the status of a British StandardICS 17.140.20; 97.040Household and similar electrical appliances Test code for the BRITISH STANDARDBS EN 60704-3:2006BS EN 60704-3:2006This British Standard was published under the authority of the Standa
3、rds Policy and Strategy Committee on 30 June 2006 BSI 2006ISBN 0 580 48708 3A list of organizations represented on this committee can be obtained on request to its secretary.Cross-referencesThe British Standards which implement international or European publications referred to in this document may
4、be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online.This publication does not purport to include all the necessary provisions of a contract. Users are
5、 responsible for its correct application.Compliance with a British Standard does not of itself confer immunity from legal obligations.Summary of pagesThis document comprises a front cover, an inside front cover, the EN title page, pages 2 to 19 and a back cover.The BSI copyright notice displayed in
6、this document indicates when the document was last issued.Amendments issued since publicationAmd. No. Date Comments aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep UK interests in
7、formed; monitor related international and European developments and promulgate them in the UK.National forewordThis British Standard is the official English language version of EN 60704-3:2006. It is identical with IEC 60704-3:2006. It supersedes BS EN 60704-3:1995 which will be withdrawn on 1 March
8、 2009.The UK participation in its preparation was entrusted to Technical Committee CPL/59, Performance of household electrical appliances, which has the responsibility to:EUROPEAN STANDARD EN 60704-3 NORME EUROPENNE EUROPISCHE NORM May 2006 CENELEC European Committee for Electrotechnical Standardiza
9、tion Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Central Secretariat: rue de Stassart 35, B - 1050 Brussels 2006 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 60704-3:2006 E I
10、CS 17.140.20; 97.040 Supersedes EN 60704-3:1994English version Household and similar electrical appliances Test code for the determination of airborne acoustical noise Part 3: Procedure for determining and verifying declared noise emission values (IEC 60704-3:2006) Appareils lectrodomestiques et ana
11、logues Code dessai pour la dtermination du bruit arien Partie 3: Procdure pour dterminer et vrifier lannonce des valeurs dmission acoustique (CEI 60704-3:2006) Elektrische Gerte fr den Hausgebrauch und hnliche Zwecke Prfvorschrift fr die Bestimmung der Luftschallemission Teil 3: Verfahren zur Bestim
12、mung und Nachprfung angegebener Geruschemissionswerte (IEC 60704-3:2006) This European Standard was approved by CENELEC on 2006-03-01. 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 nation
13、al 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 official versions (English, French, German). A version in
14、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 committees of Austria, Belgium, Cyprus, the Czech Republic
15、, 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 and the United Kingdom. Foreword The text of document 59/434/FDIS, future e
16、dition 2 of IEC 60704-3, prepared by IEC TC 59, Performance of household electrical appliances, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as EN 60704-3 on 2006-03-01. This European Standard supersedes EN 60704-3:1994. Major changes in EN 60704-3:2006 involve revised
17、values in Table A.1, including added values for fans and ovens and designation of values for standard deviations of production as informative rather than normative. Additionally, it was determined that standard deviations specified in part 2 documents of the IEC/EN 60704 series supersede the values
18、given in Table A.1. 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 endorsement (dop) 2006-12-01 latest date by which the national standards conflicting with the EN have to be withdrawn (dow) 2
19、009-03-01 Annex ZA has been added by CENELEC. _ Endorsement notice The text of the International Standard IEC 60704-3:2006 was approved by CENELEC as a European Standard without any modification. _ 2 EN 60704-3:2006CONTENTS INTRODUCTION.4 1 Scope.5 2 Normative references .5 3 Terms and definitions .
20、6 4 General 10 4.1 Test method 10 4.2 Values and symbols 11 4.3 Reference standard deviation11 5 Verification of declared noise emission values11 5.1 Basis of the procedure 11 5.2 Verification procedure .12 6 Determination of noise emission values for declaration on the basis of investigations perfo
21、rmed with an adequate number of appliances taken from production and choosing the risk of rejection.13 6.1 Basis of the procedure 13 6.2 Determination procedure .13 6.3 Presentation of noise emission values.13 Annex A (normative) Noise emission of household appliances Standard deviations .14 Annex B
22、 (informative) Verification of noise emission values Examples.15 Annex C (informative) Determination of noise emission values Examples 16 Bibliography18 3 EN 60704-3:2006Annex ZA (normative) Normative references to international publications with their corresponding European publications 19 INTRODUC
23、TION Although the noise levels produced by household appliances are not known to present a hazard to the hearing of users or other exposed persons, and as a result no noise limits have been specified by relevant authorities responsible for health protection, a comprehensive and correct declaration o
24、f noise emission will be very helpful to enable the potential buyer to make a good choice between appliances of the same category (serving for the same purpose) of different makes or for different models. In order to ensure a correct declaration of noise emission values, this part of IEC 60704 presc
25、ribes a simple method for verifying declared values and provides information for determining the noise emission values. The necessary measurements are carried out according to the relevant parts of IEC 60704. 4 EN 60704-3:2006HOUSEHOLD AND SIMILAR ELECTRICAL APPLIANCES TEST CODE FOR THE DETERMINATIO
26、N OF AIRBORNE ACOUSTICAL NOISE Part 3: Procedure for determining and verifying declared noise emission values 1 Scope This part of IEC 60704 describes procedures for determining and verifying the declared values of the noise emitted by household and similar appliances. It applies to all categories o
27、f household and similar electrical appliances covered by IEC 60704-1 and IEC 60704-2 dealing with particular requirements for special categories of appliances. It applies to appliances being produced in quantity (in series, batches, lots) manufactured to the same technical specification and characte
28、rized by the same labeled value of noise emission. This part of IEC 60704 considers the term “declaration“ to include all means for providing information on the noise emission values to potential users (consumers) of the appliances; this includes labels, brochures, advertisements, commercial and tec
29、hnical information papers, etc.; considers the declaration for appliances manufactured by mass production, with the same declared value for the lot (batch); specifies a simple statistical method for verifying the declared values by investigating a sample of only three appliances. 2 Normative referen
30、ces 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 document (including any amendments) applies. IEC 60704-1:1997, Household and similar elect
31、rical appliances Test code for the determination of airborne acoustical noise Part 1: General requirements IEC 60704-2 (all parts), Household and similar electrical appliances Test code for the determination of airborne acoustical noise Part 2: Particular requirements ISO 3534-1:1993, Statistics Voc
32、abulary and symbols Part 1: Probability and general statistical terms 5 EN 60704-3:20063 Terms and definitions For the purposes of this document, the terms and definitions given in IEC 60704-1 as well as the following apply: 3.1 sound power level LW ten times the logarithm to the base 10 of the rati
33、o of the sound power of a source to the reference sound power, expressed in decibels: 0Wlg10WWL = dB The reference sound power is 1pW (1012W). The frequency weighting, or the midband frequency of the frequency band used, is indicated in the symbol. NOTE For example, the A-weighted sound power level
34、is LWA. 3.2 A-weighted sound power level LWAsound power level of an appliance, in decibels, determined according to the appropriate requirements specified in IEC 60704-1 and the relevant IEC 60704-2 NOTE Henceforth the subscript WAis left out for reason of simplicity. 3.3 noise emission value single
35、 value of the noise emission quantity 3.4 measured value Li: noise emission value for an individual appliance determined in accordance with the appropriate requirements of IEC 60704 3.5 family of appliances category of appliances appliances of similar design or type or intended to perform the same f
36、unctions ISO 7574-1, definition 3.5, modified 3.6 declared value Lcvalue of the noise emission quantity which is rounded to the nearest decibel stated for all appliances of a complete series of production or of a batch thereof, when the appliances are new NOTE The declared value indicates the upper
37、statistical value below which a specified large proportion of noise emission values of the relevant batch lies. Lcdepends on the specified verification procedure which is designed such that there is a probability of acceptance of 95 % for the batch, when no more than 6,5 % of all noise emission valu
38、es exceeds Lc, and if the specified reference standard deviations Mequals the actual total standard deviation t. ISO 7574-1, definition 3.6, modified 6 EN 60704-3:20063.7 declaration statement of the declared value, Lc, which is included in brochures, advertisements, product or commercial literature
39、 and/or affixed to an appliance or part thereof for providing information on the noise emission values to potential users (buyers, consumers) of the appliance ISO 7574-1, definition 3.7, modified 3.8 batch of appliances group of the same family produced in quantity, manufactured to the same technica
40、l specifications and characterized by the same declared value, LcNOTE A batch may be either an entire production series or a portion thereof. ISO 7574-1, definition 3.8, modified. 3.9 size of the batch (or of the population) N number of items (appliances in the batch or noise emission values in the
41、population) of the batch (or of the population) ISO 7574-1, definition 3.9, modified. 3.10 sample one or more appliances (or measured values) randomly selected from a lot (or population) ISO 7574-1, definition 3.10, modified. 3.11 size of the sample n number of items in the sample ISO 7574-1, defini
42、tion 3.11. 3.12 arithmetic mean of a batch (or of a population) sum of the noise emission values in a batch (or in a population) divided by the size of the batch (or of the population) ISO 7574-1, definition 3.12 7 EN 60704-3:20063.13 arithmetic mean of a sample L sum of the measured values, Li, in
43、a sample divided by the size of the sample The arithmetic mean value of the sample, L , is used as an estimator of the mean value of a batch (or of a population), . ISO 7574-1, definition 3.13 3.14 standard deviation of a batch (or of a population) standard deviation of the noise emission values of
44、the batch (or of the population) of the size N is given by the equation ISO 7574-1, definition 3.14 3.15 standard deviation of a sample s standard deviation of the sample is given by the equation The standard deviation of the sample, s, is used as an estimator of the standard deviation of a batch (o
45、r of a population), . ISO 7574-1, definition 3.15 3.16 standard deviation of repeatability rstandard deviation of noise emission values obtained under repeatability conditions, that is the repeated application of the same noise emission measurement method on the same noise source within a short inte
46、rval of time under the same conditions (same laboratory, same operator, same measuring equipment) ISO 7574-1, definition 3.16, modified. NOTE Values for the standard deviation of repeatability, r, obtained in practice, are given in Annex A. 8 EN 60704-3:20063.17 standard deviation of reproducibility
47、 Rstandard deviation of noise emission values obtained under reproducibility conditions, that is the repeated application of the same noise emission measurement method on the same noise source at different times and under different conditions (different laboratory, different operator, different meas
48、uring apparatus). The standard deviation of reproducibility, therefore, includes the standard deviation of repeatability (see 3.16) NOTE Estimates of the standard deviation of reproducibility, R, obtained in practice, are given in annex A. ISO 7574-1, definition 3.17, modified. 3.18 standard deviati
49、on of production pstandard deviation of noise emission values obtained on different appliances from batches of the same category (family), using the same noise emission measurement method under repeatability conditions (same laboratory, same operator, same measuring apparatus). NOTE Estimates of the standard deviation of production, P, obtained in practice, are given in Annex A. ISO 7574-1
