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This is a preview - click here to buy the full publication INTERNATIONAL STANDARD IEC - - Edition - NORME INTERNATIONALE Household and similar electrical appliances ?? Test code for the determination of airborne acoustical noise ?? Part - Particular requirements for electric water heaters Appareils électrodomestiques et analogues ?? Code d'essai pour la détermination du bruit aérien ?? Partie - Exigences particulières pour les chau ?e-eau électriques INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE ICS ISBN - - - - Warning Make sure that you obtained this publication from an authorized distributor Attention Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agréé Registered trademark of the International Electrotechnical Commission Marque déposée de la Commission Electrotechnique Internationale CThis is a preview - click here to buy the full publication ?? ?? IEC - - ? IEC CONTENTS FOREWORD INTRODUCTION Scope Normative references Terms and de ?nitions Measurement methods and acoustical environments Instrumentation Operation and location of appliances under test Measurement of sound pressure levels Calculation of sound pressure and sound power levels Information to be recorded Information to be reported Annexes Annex A normative Standard test table Bibliography Figure ?? Scanning patterns according to ISO - Table ?? C values Table ?? S values Table ?? Standard deviations of sound power levels Table ?? Standard deviations for declaration and veri ?cation CThis is a preview - click here to buy the full publication IEC - - ? IEC ?? ?? INTERNATIONAL ELECTROTECHNICAL COMMISSION HOUSEHOLD AND SIMILAR ELECTRICAL APPLIANCES ?? TEST CODE FOR THE DETERMINATION OF AIRBORNE ACOUSTICAL NOISE ?? Part - Particular requirements for electric water heaters FOREWORD 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 questions concerning standardization in the electrical and electronic ?elds To this end and in addition to other activities IEC publishes International Standards Technical Speci ?cations Technical Reports Publicly Available Speci ?cations PAS and Guides hereafter referred to as ??IEC Publication s ? Their preparation is entrusted to technical committees any IEC National Committee interested in the subject dealt with may participate in this preparatory work International governmental and non-governmental organizations liaising with the IEC also participate in this preparation IEC collaborates closely with the International Organization for Standardization ISO in accordance with conditions determined by agreement between the two organizations The formal decisions or agreements of IEC on technical matters express as nearly as possible an international consensus of opinion on the relevant subjects since each technical committee has representation from all interested IEC National Committees IEC Publications have the form of recommendations for international use and are accepted by IEC National Committees in that sense While all reasonable e ?orts are made to ensure that the technical content of IEC Publications is accurate IEC cannot be held responsible for the way in which they are used or for any misinterpretation by any end user In order to promote