EN 60704-1:1997
(Main)Household and similar electrical appliances - Test code for the determination of airborne acoustical noise - Part 1: General requirements
Household and similar electrical appliances - Test code for the determination of airborne acoustical noise - Part 1: General requirements
Applies to the methods of determination of airborne acoustical noise emitted by household and similar electrical appliances supplied from mains or from batteries.
Elektrische Geräte für den Hausgebrauch und ähnliche Zwecke - Prüfvorschrift für die Bestimmung der Luftschallemission - Teil 1: Allgemeine Anforderungen
Appareils électrodomestiques et analogues - Code d'essai pour la détermination du bruit aérien - Partie 1: Règles générales
S'applique aux méthodes de détermination de bruit aérien émis par les appareils électrodomestiques et analogues, alimentés par le réseau ou par accumulateurs.
Household and similar electrical appliances - Test code for the determination of airborne acoustical noise - Part 1: General requirements
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Standards Content (Sample)
SLOVENSKI STANDARD
01-februar-2001
Household and similar electrical appliances - Test code for the determination of
airborne acoustical noise - Part 1: General requirements
Household and similar electrical appliances - Test code for the determination of airborne
acoustical noise -- Part 1: General requirements
Elektrische Geräte für den Hausgebrauch und ähnliche Zwecke - Prüfvorschrift für die
Bestimmung der Luftschallemission -- Teil 1: Allgemeine Anforderungen
Appareils électrodomestiques et analogues - Code d'essai pour la détermination du bruit
aérien -- Partie 1: Règles générales
Ta slovenski standard je istoveten z: EN 60704-1:1997
ICS:
17.140.20 Emisija hrupa naprav in Noise emitted by machines
opreme and equipment
97.030 (OHNWULþQLDSDUDWL]DGRPQD Domestic electrical
VSORãQR appliances in general
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
NORME
CEI
INTERNATIONALE
IEC
60704-1
INTERNATIONAL
Deuxième édition
STANDARD
Second edition
1997-02
Appareils électrodomestiques et analogues –
Code d'essai pour la détermination du bruit aérien –
Partie 1:
Règles générales
Household and similar electrical appliances –
Test code for the determination of airborne
acoustical noise –
Part 1:
General requirements
IEC 1997 Droits de reproduction réservés Copyright - all rights reserved
Aucune partie de cette publication ne peut être reproduite ni utilisée No part of this publication may be reproduced or utilized in
sous quelque forme que ce soit et par aucun procédé, électronique any form or by any means, electronic or mechanical, including
ou mécanique, y compris la photocopie et les microfilms, sans photocopying and microfilm, without permission in writing from
l'accord écrit de l'éditeur. the publisher.
International Electrotechnical Commission 3, rue de Varembé Geneva, Switzerland
Telefax: +41 22 919 0300 IEC web site http: //www.iec.ch
e-mail: inmail@iec.ch
CODE PRIX
Commission Electrotechnique Internationale
PRICE CODE U
International Electrotechnical Commission
Pour prix, voir catalogue en vigueur
For price, see current catalogue
60704-1 IEC:1997 − 3 −
CONTENTS
Page
FOREWORD . 5
INTRODUCTION . 7
Clause
1 Scope and object. 9
2 Normative references . 11
3 Terms and definitions . 13
4 Measurement methods and acoustical environments . 15
5 Instrumentation . 19
6 Operation and location of appliances under test . 21
7 Measurements of sound pressure levels . 27
8 Calculation of sound pressure and sound power levels. 35
9 Information to be recorded . 39
10 Information to be reported . 45
Figures
1 Measurement surface − parallelepiped − with key microphone positions,
for floor free-standing appliances . 49
2 Measurement surface − parallelepiped − with key microphone positions,
for floor-standing appliances placed against a wall . 49
3 Measurement surface − parallelepiped − with key microphone positions,
for high floor-standing appliances placed against a wall . 50
4 Measurement surface − hemisphere − with key microphone positions for hand-held,
table-type and floor-treatment appliances. 51
5 Measurement surface − quarter-sphere − with key microphone positions for small
floor-standing appliances placed against a wall . 52
6 Measurement surface − parallelepiped − with five or nine microphone positions
for stand-type appliances. 53
Annexes
A Standard test table . 55
B Guidelines for the design of simple test rooms with essentially free-field conditions . 57
60704-1 IEC:1997 − 5 −
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
HOUSEHOLD AND SIMILAR ELECTRICAL APPLIANCES –
TEST CODE FOR THE DETERMINATION OF AIRBORNE
ACOUSTICAL NOISE –
Part 1: General requirements
FOREWORD
1) The IEC (International Electrotechnical Commission) is a worldwide organization for standardization
comprising all national electrotechnical committees (IEC National Committees). The object of the IEC is to
promote international co-operation on all questions concerning standardization in the electrical and electronic
fields. To this end and in addition to other activities, the IEC publishes International Standards. 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. The IEC collaborates closely with the International
Organization for Standardization (ISO) in accordance with conditions determined by agreement between the
two organizations.
2) The formal decisions or agreements of the 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 National Committees.
3) The documents produced have the form of recommendations for international use and are published in the
form of standards, technical reports or guides and they are accepted by the National Committees in that
sense.
4) In order to promote international unification, IEC National Committees undertake to apply IEC International
Standards transparently to the maximum extent possible in their national and regional standards. Any
divergence between the IEC Standard and the corresponding national or regional standard shall be clearly
indicated in the latter.
5) The IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any
equipment declared to be in conformity with one of its standards.
6) Attention is drawn to the possibility that some of the elements of this International Standard may be the
subject of patent rights. The IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 60704-1 has been prepared by IEC technical committee 59:
Performance of household electrical appliances.
This second edition cancels and replaces the first edition published in 1982 and constitutes a
technical revision. It includes the conditions for using hard-walled test rooms and introduces
the concept of time-averaged sound pressure level.
The text of this standard is based on the following documents:
FDIS Report on voting
59/162/FDIS 59/173/RVD
Full information on the voting for the approval of this standard can be found in the report on
voting indicated in the above table.
Annex A forms an integral part of this standard.
Annex B is for information only.
60704-1 IEC:1997 − 7 −
INTRODUCTION
Although the noise emitted by household appliances does not generally present a hazard to the
hearing of the operator and other exposed persons, the need for standardization procedures
for the determination of the noise emitted has been recognized for a long time. Such
procedures should be specified, not only for special types of appliances, but also the principles
should be applicable to the majority of appliances in general use.
Generally, the determination of noise levels is only part of a comprehensive testing procedure
covering many aspects of the properties and performances of the appliance. It is therefore
important that the requirements for noise measurements (such as test environment,
instrumentation, and amount of labour involved) should be kept at a modest level.
The results of noise measurements will be used for many purposes, for example for noise
declaration, as well as for comparing the noise emitted by a specific appliance to the noise
emitted by other appliances of the same family. In other cases, the results will be taken as a
basis for engineering action in the development stages of new pieces of equipment, or in
deciding on means for sound insulation. For all purposes, it is important to specify procedures
with known accuracy so that the results of measurements taken by different laboratories can be
compared.
These conditions have, as far as possible, been taken into account in the preparation of this
test code. The acoustic measuring methods are based on those described in ISO 3743-1,
ISO 3743-2 and ISO 3744.
The adoption of these methods permits the use of semi-anechoïc rooms, special reverberation
test rooms and hard-walled test rooms. The result of the measurements is the sound power
level of the appliance. Within the measuring uncertainty specific to these methods, the results
from the determination under free-field conditions over a reflecting plane are equal to those
)
obtained in reverberant fields. The use of intensity methods as described in ISO 9614-1 and
2)
ISO 9614-2 is under consideration.
It should be emphasized that this test code is concerned with airborne noise only. In some
cases, structure-borne noise, for example transmitted to the adjoining room, may be of
importance.
_________
)
ISO 9614-1: 1993, Acoustics − Determination of sound power levels of noise sources using sound intensity −
Part 1: Measurement.
)
ISO/DIS 9614-2: 1996, Acoustics − Determination of sound power levels of noise sources using sound intensity −
Part 2: Measurement by scanning.
60704-1 IEC:1997 − 9 −
HOUSEHOLD AND SIMILAR ELECTRICAL APPLIANCES –
TEST CODE FOR THE DETERMINATION OF AIRBORNE
ACOUSTICAL NOISE –
Part 1: General requirements
1 Scope and object
1.1 Scope
General
1.1.1
This part of IEC 704 applies to electric appliances (including their accessories or components)
for household and similar use, supplied from mains or from batteries.
By similar use is understood the use in similar conditions as in households, for example in inns,
coffee-houses, tea-rooms, hotels, barber or hairdresser shops, launderettes, etc., if not
otherwise specified in part 2.
This standard does not apply to:
– appliances, equipment or machines designed exclusively for industrial or professional
purposes;
– appliances which are integrated parts of a building or its installations, such as equipment
for air conditioning, heating and ventilating (except household fans, cooker hoods and free
standing heating appliances), oil burners for central heating, pumps for water supply and for
sewage systems;
– separate motors or generators;
– appliances for outdoor use.
1.1.2 Types of noise
A classification of different types of noise is given in ISO 12001. The method specified in
ISO 3744 is suitable for measurements of all types of noise emitted by household appliances.
The methods specified in ISO 3743-1 and ISO 3743-2 are suitable for all types of noise, except
for sources of impulsive noise consisting of short duration noise bursts. This will be taken into
account in the preparation of parts 2.
1.1.3 Size of the source
The method specified in ISO 3744 is applicable to noise sources of any size. Limitations for the
size of the source are given in 1.2.2 of ISO 3743-1 and ISO 3743-2. This will be taken into
account in the preparation of parts 2.
Object
1.2
This standard is concerned with objective methods of engineering accuracy (grade 2 according
to ISO 12001) for determining sound power levels L , expressed in decibels (dB) with
W
reference to a sound power of one picowatt (1 pW), of airborne acoustical noise within the
specified frequency range of interest (generally including the octave bands with centre
frequencies from 125 Hz to 8 000 Hz), and for prescribed operating conditions of the appliance
to be measured.
60704-1 IEC:1997 − 11 −
The following quantities are used:
– A-weighted sound power level, L ; and
WA
– octave band sound power levels.
In general, the described methods are specified for appliances without an operator present. A
part 2 can specify that an operator will be present only for the (rare) cases where an appliance
can only be operated, or must be fed, by an operator.
Methods for determining sound power levels with precision accuracy (grade 1 according to
ISO 12001), specified for example in ISO 3741 and ISO 3745, are not included in this standard.
They may, however, be applied if the appropriate test environment and instrumentation are
available.
NOTES
1 The noise values obtained under the described conditions of this part will not necessarily correspond with
the noise experienced under the operational conditions of practical use.
2 For quality control during production etc., simplified methods may be appropriate. For noise reduction
purposes, other measurement methods employing, for example, narrow-band analysis or intensity technics
usually will have to be applied. These methods are not covered by this part.
1.3 Measurement uncertainty
The estimated values of the standard deviations of reproducibility of
...
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