EN 28960:1993
(Main)Refrigerators, frozen-food storage cabinets and food freezers for household and similar use - Measurement of emission of airborne acoustical noise (ISO 8960:1991)
Refrigerators, frozen-food storage cabinets and food freezers for household and similar use - Measurement of emission of airborne acoustical noise (ISO 8960:1991)
2011-11-07 GVN: This EN should be withdrawn at the publication date of CLC/TC 59X future EN 60704-2-14 (CELIS PR=23530)
2010-03-09 EMA: Through BT C53/2007, CEN/BT approved the transfer of EN 28960:1993 to CENELEC. This WI will be withdrawn at the DOW of the new edition.
Kühlgeräte, Tiefkühlgeräte und Gefriergeräte für den Hausgebrauch und ähnliche Zwecke - Prüfung der Luftschallemission (ISO 8960:1991)
Diese Internationale Norm gilt für die Prüfverfahren der Luftschallemission von elektrischen Kühlgeräten, Tiefkühlgeräten und Gefriergeräten für den Haushalt und ähnliche Zwecke und von Kombinationen solcher Geräte, die zum Anschluss an das Netz oder für Batteriebetrieb bestimmt sind. Unter "ähnliche Zwecke" wird "die Verwendung unter ähnlichen Bedingungen wie im Haushalt~ verstanden, z. B. in Kaffeehäusern, Gaststätten, Hotels und ähnlichen Einrichtungen.
Réfrigérateurs, conservateurs et congélateurs à usage ménager et analogue - Mesure de l'émission du bruit aérien (ISO 8960:1991)
La présente Norme internationale prescrit des méthodes de mesure du bruit aérien émis par des réfrigérateurs, conservateurs et congélateurs électriques à usage ménager et analogue, et leurs combinaisons, alimentés par le réseau ou par accumulateurs. Le terme «usage analogue» signifie l'usage dans des conditions similaires à l'usage ménager, par exemple dans les cafés, restaurants, hôtels et autres établissements de ce type. La présente Norme internationale ne s'applique pas aux appareils, équipements ou machines conçus exclusivement pour les besoins commerciaux et industriels. La présente Norme internationale concerne des méthodes objectives d'une précision de la classe «expertise» (méthode d'expertise, classe 2, suivant l'ISO 2204) destinées à déterminer les niveaux de puissance acoustique LW, exprimés en décibels par rapport à une puissance acoustique de 1 pW, du bruit aérien émis à l'intérieur du domaine de fréquences représentatif, dans les conditions de fonctionnement prescrites pour l'appareil à essayer. Le domaine de fréquences représentatif comprend les bandes d'octave dont les fréquences médianes sont comprises entre 125 Hz et 8 000 Hz (cet intervalle étant pour des raisons pratiques plus étroit que le domaine de fréquences des sons audibles). Les niveaux de puissance acoustique suivants sont utilisés : -- niveau de puissance acoustique pondéré A, LWA, et -- niveau de puissance acoustique par bande d'octave, LWOct. En général, les méthodes décrites s'appliquent à des appareils fonctionnan 1786t en l'absence d'opérateur. Les mesures de bruit sont effectuées pendant les cycles de marche du (des) compresseur(s). Des exigences comme l'indication des valeurs de l'émission de bruit sont exclues du domaine de la présente Norme internationale.
NOTES 1 L'incertitude des mesures effectuées conformément à la présente Norme internationale conduit, pour les niveaux de puissance acoust
Refrigerators, frozen-food storage cabinets and food freezers for household and similar use - Measurement of emission of airborne acoustical noise (ISO 8960:1991)
General Information
Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Refrigerators, frozen-food storage cabinets and food freezers for household and similar use - Measurement of emission of airborne acoustical noise (ISO 8960:1991)Kühlgeräte, Tiefkühlgeräte und Gefriergeräte für den Hausgebrauch und ähnliche Zwecke - Prüfung der Luftschallemission (ISO 8960:1991)Réfrigérateurs, conservateurs et congélateurs a usage ménager et analogue - Mesure de l'émission du bruit aérien (ISO 8960:1991)Refrigerators, frozen-food storage cabinets and food freezers for household and similar use - Measurement of emission of airborne acoustical noise (ISO 8960:1991)97.040.30Hladilni aparati za domDomestic refrigerating appliances17.140.20Emisija hrupa naprav in opremeNoise emitted by machines and equipmentICS:Ta slovenski standard je istoveten z:EN 28960:1993SIST EN 28960:2000en01-december-2000SIST EN 28960:2000SLOVENSKI
STANDARD
IS0 8960:1991(E) Foreword IS0 (the International Organization for Standardization) is a worldwide federation of national standards bodies (IS0 member bodies). The work of preparing International Standards is normally carried out through IS0 technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, govern- mental and non-governmental, in liaison with ISO, also take par-t in the work. IS0 collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an Inter- national Standard requires approval by at least 75 % of the member bodies casting a vote. . International Standard IS0 8960 was prepared by Technical Committee ISO/TC 86, Refriqeration. c Annexes A and B of this International Standard are for information only. 0 IS0 1991 All rights reserved. No part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from the publisher. lnterna tional Organization for Standardization Case P ostale 56 l Cti-1211 Get-k/e 20 + Switz erland Printed in Switzerland ii SIST EN 28960:2000
IS0 8960:1991(E) Introduction The clause number-s in this International Standard correspond to those in IEC 704-I on which the measurement method described in this Inter- national Standard is based. For the purposes of this International Standard, the heading “Replace- ment” indicates that the text given in this International Standard re- places the relevant text in IEC 704-l; similarly the heading “Addition” indicates that the text given in this International Standard supplements the relevant text in IEC 704-I. . . . III SIST EN 28960:2000
This page intentionally left blank SIST EN 28960:2000
INTERNATIONAL STANDARD IS0 8960:1991 (E) Refrigerators, frozen-food storage cabinets and food freezers for household and similar use - Measurement of emission of airborne acoustical noise 1 Scope This International Standard specifies methods for measuring airborne acoustical noise emitted by electric refrigerators, frozen-food storage cabinets, food freezers and their combinations for household and similar uses, supplied from the mains or from batteries. The term “similar use” means “use under condi- tions similar to those in a household”, e.g. in cafes, restaurants, hotels and similar establishments. This International Standard does not apply to ap- pliances, equipment or machines designed exclu- sively for industrial or commercial purposes. This International Standard is concerned with ob- jective methods of engineering accuracy (engineer- ing method, grade 2 according to IS0 2204) for determining sound power levels, (-wl expressed in decibels with reference to a sound power of 1 pW, of airborne acoustical noise within the specified fre- quency range of interest, and for specified operating conditions of the appliance to be measured. The frequency ranqe of interest includes the octave bands with centre‘frequencies between 125 Hz and 8000 Hz (this interval being, for practical reasons, narrower than the frequency range of audible sound). The following sound power levels are used: - A-weighted sound power level, I,,,, and - octave band sound power levels, LMroCt. In g eneral, the methods described are specified for aPP liances ape rated with no opera tor p resent. The noise m easurements are made while the com- pressors are running. Requirements as to an indication of the noise emission values are not the subject of this Inter- national Standard. NOTES 1 The uncertainties of measurement according to this International Standard usually result, for A-weighted sound power levels, in standard deviations generally not exceeding approximately 2 dB, provided that the noise spectrum does not contain pronounced discrete frequen- cies; if it does, the magnitude of the uncertainties will be larger. The standard deviations referred to reflect the cu- mulative effects of all causes of measurement uncertain- ties, excluding variations in the noise level of the appliance from test to test. 2 The noise values obtained under the conditions de- scribed in this International Standard will not necessarily correspond with the noise experienced under the opera- tional conditions of practical use (see 6.4.1). 3 For quality control during production, etc., simplified methods may be appropriate. For noise control purposes (e.g. deve?opment of quieter appliances, insulation of equipment, etc.), other measurement methods using, for example, narrow-band frequency analysis will usually have to be applied. These methods are not covered in this International Standard. This International Standard does not include meth- ods for determining sound power levels with pre- cision accuracy (precision method, grade 1 according to IS0 2204) specified, for example, in IS0 3741, IS0 3742 and IS0 3745; they may, how- ever, be applied if the appropriate instrumentation and test environment are available. 2 Normative reference The following standard contains provisions which, through reference in this text, constitute provisions of this International Standard. At the time of publi- cation, the edition indicated was valid. All standards are subject to revision, and parties to agreements based on this International Standard are encour- 1 SIST EN 28960:2000
IS0 8960:1991 (E) aged to investigate the possibility of applying the most recent edition of the standard indicated below. Members of IEC and IS0 maintain registers of cur- rently valid International Standards. are considered as being achieved when the duration of the compressor running time does not deviate by more than IO % from the running time of the pre- vious cycle. IEC 704-1:1982, Test code for the determination of airborne acoustical noise emitted by household and similar electrical appliances - Part I: General re- quirements. 6.2 Supply of electric energy 6.2.1 Replacement Appliances with mains-powered electric motor(s) shall be supplied with nominal system voltage and frequency for the country in which the appliance is intended to be used, with a tolerance of + 1 % on voltage and + 1 Hz on frequency. These values may deviate from the manufacturer’s rated voltage and frequency. 3 Terms and definitions Clause 3 of IEC 704-I is applicable. 4 Measurement methods and acoustical environments The supply voltage shall be measured at the plug of a non-detachable cable or cord, or at the ap- pliance inlet if a detachable cable is provided, but in no case at the entrance of extension cables or cords. Clause 4 of IEC 704-I is applicable. 5 Instrumentation Clause 5 of IEC 704-I is applicable. 6.2.2 Replacement Appliances with battery-powered electric motors shall be operated at the manufacturer’s rec- ommended voltage, with a tolerance of + 1 %. -- 6 Operation and location of appliances under test Clause 6 of IEC 704-I is applicable with the following modifications. 6.3 Climatic and temperature conditions Replacement 6.1 Equipping and pre-conditioning of appliances The applian conditions: ce shall be operated under the following 6.1.2 Addition Test room conditions Loose components inside the appliance which cre- ate undue vibrations (e.g. shelves or ice-trays) shall be secured, for example by tape, or may be ad- justed. Ambient temperature: 22 OC + 3 K -
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.