IEC 60704-3:2019
(Main)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
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 60704-3:2019 is available as IEC 60704-3:2019 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.
IEC 60704-3:2019 describes procedures for determining and verifying the declared values of the noise emitted by household and similar appliances. It applies to all categories of household and similar electrical appliances covered by IEC 60704-1 and all parts of IEC 60704-2, which include particular requirements for special categories of appliances. It applies to appliances being produced in quantity, such as in batches, series or lots, which are manufactured to the same technical specification and characterized by the same declared 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 technical information papers, etc.;
– considers the declaration for appliances manufactured by mass production;
– specifies a simple statistical method for verifying the declared values by investigating a sample of only three appliances.
This International Standard is to be used in conjunction with IEC 60704-1:2010 and the latest edition of IEC 60704-2 (all parts).
This third edition cancels and replaces the second edition published in 2006. This edition constitutes a technical revision. It includes the following significant technical changes with respect to the previous edition:
a) in Annex A, standard deviations that are now specified for various appliance categories in the parts of IEC 60704-2 have been excluded from Table A.1;
b) furthermore, this edition makes reference to new standards and is implementing ISO/IEC Directives, Part 2 in a more accurate manner.
Appareils électrodomestiques et analogues - Code d’essai pour la détermination du bruit aérien - Partie 3 : Méthode de détermination et de vérification des valeurs déclarées d'émission sonore
IEC 60704-3:2019 est disponible sous forme de IEC 60704-3:2019 RLV qui contient la Norme internationale et sa version Redline, illustrant les modifications du contenu technique depuis l'édition précédente.
L'IEC 60704-3:2019 décrit les méthodes de détermination et de vérification des valeurs déclarées du bruit émis par les appareils domestiques et analogues. Elle s'applique à toutes les catégories d'appareils à usage domestique et analogue couverts par l'IEC 60704-1 et toutes les parties de l'IEC 60704-2, qui contiennent des exigences particulières applicables à certaines catégories d'appareils. Elle s'applique aux appareils produits en quantité (en série, en lots) fabriqués suivant les mêmes spécifications techniques et caractérisés par la même valeur déclarée d'émission sonore. La présente partie de l'IEC 60704:
– utilise le terme "déclaration" pour englober tous les moyens utilisés pour fournir des informations sur les valeurs d'émission sonore aux utilisateurs potentiels (consommateurs) des appareils; ce terme inclut les étiquettes, les notices, les publicités, les fiches techniques et commerciales d'information, etc.;
– traite de la déclaration pour des appareils fabriqués en série;
– décrit une méthode statistique simple pour vérifier les valeurs déclarées en étudiant un échantillon limité à trois appareils.
Cette Norme internationale doit être utilisée conjointement avec l'IEC 60704-1:2010 et la dernière édition de l'IEC 60704-2 (toutes les parties).
Cette troisième édition annule et remplace la deuxième édition parue en 2006. Cette édition constitue une révision technique. Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente:
a) dans l'Annexe A, les écarts-types qui sont à présent spécifiés pour différentes catégories d'appareils dans les parties de l'IEC 60704-2 ont été exclus du Tableau A.1;
b) en outre, cette édition fait référence à de nouvelles normes et met en application les Directives ISO/IEC, Partie 2 d'une manière plus précise.
General Information
Standards Content (Sample)
IEC 60704-3
Edition 3.0 2019-05
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
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
Appareils électrodomestiques et analogues – Code d'essai pour la détermination
du bruit aérien –
Partie 3: Méthode de détermination et de vérification des valeurs déclarées
d'émission sonore
IEC 60704-3:2019-05(en-fr)
---------------------- Page: 1 ----------------------
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---------------------- Page: 2 ----------------------
IEC 60704-3
Edition 3.0 2019-05
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
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
Appareils électrodomestiques et analogues – Code d'essai pour la
détermination du bruit aérien –
Partie 3: Méthode de détermination et de vérification des valeurs déclarées
d'émission sonore
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 17.140.20; 97.030 ISBN 978-2-8322-6975-6
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 CommissionMarque déposée de la Commission Electrotechnique Internationale
---------------------- Page: 3 ----------------------
– 2 – IEC 60704-3:2019 © IEC 2019
CONTENTS
FOREWORD ........................................................................................................................... 3
INTRODUCTION ..................................................................................................................... 5
1 Scope .............................................................................................................................. 6
2 Normative references ...................................................................................................... 6
3 Terms, definitions and calculations .................................................................................. 6
3.1 Terms and definitions .............................................................................................. 6
3.2 Calculations .......................................................................................................... 11
4 General ......................................................................................................................... 12
4.1 Test method .......................................................................................................... 12
4.2 Values and symbols .............................................................................................. 12
4.3 Reference standard deviation ............................................................................... 13
5 Verification of declared noise emission values ............................................................... 13
5.1 Basis of the procedure .......................................................................................... 13
5.2 Verification procedure ........................................................................................... 14
6 Determination of noise emission values for declaration .................................................. 14
6.1 Basis of the procedure .......................................................................................... 14
6.2 Determination procedure ....................................................................................... 14
6.3 Presentation of noise emission values .................................................................. 14
Annex A (normative) Noise emission of household appliances – Standard deviations .......... 16
Annex B (informative) Verification of noise emission values – Examples .............................. 17
B.1 Example 1 ............................................................................................................. 17
B.2 Example 2 ............................................................................................................. 17
Annex C (informative) Determination of noise emission values – Examples ......................... 18
C.1 Example 1 ............................................................................................................. 18
C.2 Example 2 ............................................................................................................. 18
C.3 Example 3 ............................................................................................................. 19
Bibliography .......................................................................................................................... 20
Figure 1 – Quantile of the standardized distribution .............................................................. 13
Table A.1 – Standard deviation ............................................................................................. 16
Table C.1 – Calculated noise emission values as a function of the total standarddeviation σ and the probability of acceptance P as assumed by the labeller ....................... 18
t a---------------------- Page: 4 ----------------------
IEC 60704-3:2019 © IEC 2019 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
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
FOREWORD
1) 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 fields. To
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patent rights. IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 60704-3 has been prepared by IEC technical committee 59:
Performance of household electrical appliances.IEC 60704-1:2010 has served as a basis for the elaboration of this standard.
This third edition cancels and replaces the second edition published in 2006. This edition
constitutes a technical revision. It includes the following significant technical changes with
respect to the previous edition:a) in Annex A, standard deviations that are now specified for various appliance categories in
the parts of IEC 60704-2 have been excluded from Table A.1;b) furthermore, this edition makes reference to new standards and is implementing
ISO/IEC Directives, Part 2 in a more accurate manner.Standard deviations specified in part 2 documents of the IEC 60704 series supersede the
values given in Table A.1.---------------------- Page: 5 ----------------------
– 4 – IEC 60704-3:2019 © IEC 2019
The text of this International Standard is based on the following documents:
CDV Report on voting
59/675/CDV 59/680A/RVC
Full information on the voting for the approval of this International Standard can be found in
the report on voting indicated in the above table.This document has been drafted in accordance with the ISO/IEC Directives, Part 2.
This International Standard is to be used in conjunction with IEC 60704-1:2010 and the latest
edition of IEC 60704-2 (all parts).A list of all parts in the IEC 60704 series, published 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 document will remain unchanged until the
stability date indicated on the IEC website under "http://webstore.iec.ch" in the data related to
the specific document. At this date, the document will be• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
IMPORTANT – The “colour inside” logo on the cover page of this publication indicates
that it contains colours which are considered to be useful for the correct understanding
of its contents. Users should therefore print this publication using a colour printer.
---------------------- Page: 6 ----------------------IEC 60704-3:2019 © IEC 2019 – 5 –
INTRODUCTION
A comprehensive and correct declaration of noise emission is 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
describes a simple method for verifying declared values and provides information for
determining the noise emission values.Different countries are implementing different market surveillance strategies. This document
is not implementing a mandatory market surveillance strategy.---------------------- Page: 7 ----------------------
– 6 – IEC 60704-3:2019 © IEC 2019
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
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 of household and similar electrical appliances covered by
IEC 60704-1 and all parts of IEC 60704-2, which include particular requirements for special
categories of appliances.It applies to appliances being produced in quantity, such as in batches, series or lots, which
are manufactured to the same technical specification and characterized by the same declared
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 technical information papers, etc.;– considers the declaration for appliances manufactured by mass production;
– specifies a simple statistical method for verifying the declared values by investigating a
sample of only three appliances.2 Normative references
The following documents are referred to in the text in such a way that some or all of their
content constitutes requirements 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 60704-1:2010, Household and similar electrical appliances – Test code for the
determination of airborne acoustical noise – Part 1: General requirementsIEC 60704-2 (all parts), Household and similar electrical appliances – Test code for the
determination of airborne acoustical noise – Part 2: Particular requirementsISO 3534-1:2006, Statistics – Vocabulary and symbols – Part 1: Probability and general
statistical termsISO 7574-4:1985, Acoustics – Statistical methods for determining and verifying stated noise
emission values of machinery and equipment – Part 4: Methods for stated values for batches
of machines3 Terms, definitions and calculations
3.1 Terms and definitions
For the purposes of this document, the terms and definitions given in IEC 60704-1 and the
following apply.ISO and IEC maintain terminological databases for use in standardization at the following
addresses:---------------------- Page: 8 ----------------------
IEC 60704-3:2019 © IEC 2019 – 7 –
• IEC Electropedia: available at http://www.electropedia.org/
• ISO Online browsing platform: available at http://www.iso.org/obp
3.1.1
sound power level
ten times the logarithm to the base 10 of the ratio of the sound power of a source to the
reference sound power, expressed in decibels−12
Note 1 to entry: The reference sound power is 1 pW (10 W). The frequency weighting, or the midband
frequency of the frequency band used, is indicated in the symbol.Note 2 to entry: For example, the A-weighted sound power level is L .
3.1.2
A-weighted sound power level
sound power level of an appliance, determined according to the appropriate requirements
specified in IEC 60704-1 and the relevant part of IEC 60704-2Note 1 to entry: Henceforth, the subscript is left out for reasons of simplicity.
3.1.3noise emission value
single value of the noise emission quantity
3.1.4
measured value
noise emission value for an individual appliance determined in accordance with the
appropriate requirements of IEC 607043.1.5
family of appliances
category of appliances
appliances of similar design or type, or intended to perform the same functions
[SOURCE: ISO 7574-1:1985, 3.5, modified – The notes have been deleted, "category of
appliances" has been added as a preferred term, "machines" has been replaced by"appliances" in the term and in the definition, and "or equipment" has been deleted from the
definition.]3.1.6
declared value
value 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
newNote 1 to entry: The declared value indicates the upper statistical value below which a specified large proportion
of noise emission values of the relevant batch lies. L depends 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 values exceeds L , and if the specified reference standard deviations σ equals the actual total standard
c Mdeviation σ .
[SOURCE: ISO 7574-1:1985, 3.6, modified – The term "stated value; labelled value" has been
replaced by "declared value"; the first sentence has been rephrased to "which is rounded to
the nearest decibel stated for all appliances of a complete series of production or of a batch
thereof" and "when the appliances are new" has been added; the second sentence has been
deleted; the fact "are new" is integrated in first sentence and notes 1 and 2 have been
replaced by a Note 1 to entry.]---------------------- Page: 9 ----------------------
– 8 – IEC 60704-3:2019 © IEC 2019
3.1.7
declaration
statement of the declared value, L , which is included in brochures, advertisements, product
or commercial literature 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
Note 1 to entry: The term "labeller" is used in this document for a person making declarations.
[SOURCE: ISO 7574-1:1985, 3.7, modified – The term "label" has been replaced by"declaration", "brochures, advertisements, or commercial literature" have been added, the
phrase after "and/or affixed" has been replaced by "to an appliance or part thereof for
providing information on the noise emission values to potential users (buyers, consumers) of
the appliance" and Note 1 to entry has been added.]3.1.8
batch of appliances
group of the same family produced in quantity, manufactured to the same technical
specifications and characterized by the same declared value, LNote 1 to entry: A batch may be either an entire production series or a portion thereof.
[SOURCE: ISO 7574-1:1985, 3.8, modified – The term "batch (lot) of machines" has been
replaced by "batch of appliances" and the note has been transferred into Note 1 to entry.]
3.1.9size of the batch
size of the population
number of items (appliances in the batch or noise emission values in the population) of the
batch (or of the population)[SOURCE: ISO 7574-1:1985, 3.9, modified – The term "size of the population" has been
explicitely added as a preferred term, word "machines" is replaced by "appliances" and
phrase "of the batch (or of the population)" is added.]3.1.10
sample
one or more appliances (or measured values) randomly selected from a lot (or population)
[SOURCE: ISO 7574-1:1985, 3.10, modified – "Machines" is replaced by "appliances".]
3.1.11size of the sample
number of items in the sample
[SOURCE: ISO 7574-1:1985, 3.11].
3.1.12
arithmetic mean of a batch
arithmetic mean 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)[SOURCE: ISO 7574-1:1985, 3.12, modified – The term "arithmetic mean of a population"
has been explicitly added and the formula has been deleted.]3.1.13
arithmetic mean of a sample
sum of the measured values, L , in a sample divided by the size of the sample
---------------------- Page: 10 ----------------------
IEC 60704-3:2019 © IEC 2019 – 9 –
Note 1 to entry: The arithmetic mean value of the sample, is used as an estimator of the mean value of a batch
(or of a population), µ.[SOURCE: ISO 7574-1:1985, 3.13, modified – The formula has been deleted and the
explanation has been transferred to Note 1 to entry.]
3.1.14
standard deviation of a batch
standard deviation of a population
standard deviation of the noise emission values of the batch (or of the population)
[SOURCE: ISO 7574-1:1985, 3.14, modified – The phrase "of size N is given by the equation"
and the related formula have been deleted.]3.1.15
standard deviation of a sample
standard deviation of the noise emission values of the sample
Note 1 to entry: The standard deviation of the sample, s, is used as an estimator of the standard deviation of a
batch (or of a population), σ.[SOURCE: ISO 7574-1:1985, 3.15, modified – Phrase "of the noise emission" has been added,
formula has been deleted and the explanation has been transferred to Note 1 to entry.]
3.1.16standard deviation of repeatability
standard 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 interval of time under the same conditions (same laboratory, same
operator, same measuring equipment)Note 1 to entry: Values for the standard deviation of repeatability, σ , obtained in practice, are given in Annex A.
[SOURCE: ISO 7574-1:1985, 3.16, modified – The phrase "same apparatus" has beenreplaced by "same measurement equipment", reference to ISO 5725 has been deleted and
Note 1 to entry has been added.]3.1.17
standard deviation of reproducibility
standard 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 measuring apparatus)Note 1 to entry: The standard deviation of reproducibility includes the standard deviation of repeatability
(see 3.1.16).Note 2 to entry: Estimates of the standard deviation of reproducibility, σ , obtained in practice, are given in
Annex A.[SOURCE: ISO 7574-1:1985, 3.17, modified – The reference to ISO 5725 has been deleted,
the second sentence has been transferred to Note 1 to entry and Note 2 to entry has been
added.]3.1.18
standard deviation of production
standard 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)
---------------------- Page: 11 ----------------------– 10 – IEC 60704-3:2019 © IEC 2019
Note 1 to entry: Estimates of the standard deviation of production, σ , obtained in practice, are given in Annex A.
[SOURCE: ISO 7574-1:1985, 3.18, modified – Phrase at the beginning has been replaced by
"of noise emission values obtained on different appliances from batches of the same category
(family)", the note has been deleted and Note 1 to entry has been added.]3.1.19
total standard deviation
square root of the sum of the squares of the standard deviation of reproducibility (see 3.1.17)
and of the standard deviation of production (see 3.1.18)Note 1 to entry: Estimates of the total standard deviation, σ , obtained in practice are given in Annex A.
[SOURCE: ISO 7574-1:1985, 3.19, modified – The formula has been deleted and Note 1 to
entry has been added.]3.1.20
reference standard deviation
total standard deviation specified and fixed for the family of appliances under consideration
which is considered to be typical for batches from this familyNote 1 to entry: The use of a fixed σ for each category of appliances enables the application of a statistical
method to deal with small sample sizes.Note 2 to entry: Values of the reference standard deviation, σ , fixed for the various categories of household
appliances (obtained from practical investigations) are given in Annex A.[SOURCE: ISO 7574-1:1985, 3.20, modified – The words "and fixed" have been added,
"machines" has been replaced by "appliances", first sentence of note has been transferred to
a Note 1 of entry, remaining part of the note has been deleted and Note 2 to entry has been
added.]3.1.21
single sampling
type of sampling which consists in taking only one sample from the batch
Note 1 to entry: See ISO 3534-1:2006.
[SOURCE: ISO 7574-1:1985, 3.21, modified – Reference to ISO 3534-1 has been transferred
to Note 1 to entry.]3.1.22
inspection by variables
method which consists in measuring a quantitative characteristic for each item of a population
or of a sample taken from this populationNote 1 to entry: The quantitative characteristic is the noise emission quantity.
Note 2 to entry: See ISO 3534-1:2006.
[SOURCE: ISO
...
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