IEC 60704-2-10:2024
(Main)Household and similar electrical appliances - Test code for the determination of airborne acoustical noise - Part 2-10: Particular requirements for ranges, ovens, steam ovens, grills and microwave ovens
Household and similar electrical appliances - Test code for the determination of airborne acoustical noise - Part 2-10: Particular requirements for ranges, ovens, steam ovens, grills and microwave ovens
IEC 60704-2-10:2024 applies to ranges, ovens, steam ovens, grills and microwave ovens for household and similar use. This document does not apply to hobs. This document does not apply to appliances or parts of appliances that use gas energy.
Requirements for the declaration of noise emission values are not within the scope of this document. This third edition cancels and replaces the second edition published in 2011. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous edition:
a) alignment with the fourth edition of IEC 60704-1:2021;
b) alignment with IEC 60350-1:2023 regarding the definitions and settings;
c) introduction of the measurement of the steam function;
d) revision of settings and test parameters.
This document is intended to be used in conjunction with IEC 60704-1:2021, Household and similar electrical appliances - Test code for the determination of airborne acoustical noise - Part 1: General requirements.
Appareils électrodomestiques et analogues - Code d'essai pour la détermination du bruit aérien - Partie 2-10: Exigences particulières pour les cuisinières, les fours, les fours à vapeur, les grils et les fours à micro-ondes
L'IEC 60704-2-10:2024 s'applique aux cuisinières, fours, fours à vapeur, grils et fours à micro-ondes pour usages domestiques et analogues. Le présent document ne s’applique pas aux tables de cuisson. Le présent document ne s’applique pas aux appareils ou parties d’appareils qui fonctionnent au gaz. Les exigences relatives à la déclaration des valeurs d'émission sonore n’entrent pas dans le domaine d'application du présent document. Cette troisième édition annule et remplace la deuxième édition parue en 2011. Cette édition constitue une révision technique.
Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente:
a) alignement sur la quatrième édition de l’IEC 60704-1:2021;
b) alignement sur l'IEC 60350-1:2023 en ce qui concerne les définitions et les réglages;
c) introduction du mesurage de la fonction de vapeur;
d) révision des réglages et des paramètres d’essai.
Le présent document est destiné à être utilisé conjointement avec l'IEC 60704-1:2021, Appareils électrodomestiques et analogues - Code d'essai pour la détermination du bruit aérien - Partie 1: Exigences générales.
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IEC 60704-2-10 ®
Edition 3.0 2024-09
EXTENDED VERSION
INTERNATIONAL
STANDARD
colour
inside
This full version of IEC 60704-2-10:2024 includes the content of the references made to
IEC 60704-1:2021
Household and similar electrical appliances – Test code for the determination of
airborne acoustical noise –
Part 2-10: Particular requirements for ranges, ovens, steam ovens, grills and
microwave ovens
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IEC 60704-2-10 ®
Edition 3.0 2024-09
EXTENDED VERSION
INTERNATIONAL
STANDARD
colour
inside
This full version of IEC 60704-2-10:2024 includes the content of the references made to
IEC 60704-1:2021
Household and similar electrical appliances – Test code for the determination of
airborne acoustical noise –
Part 2-10: Particular requirements for ranges, ovens, steam ovens, grills and
microwave ovens
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 17.140.20; 97.040.20 ISBN 978-2-8322-9677-6
– 2 – IEC 60704-2-10:2024 EXV © IEC 2024
CONTENTS
FOREWORD . 4
INTRODUCTION to IEC 60704-1:2021 . 7
INTRODUCTION to IEC 60704-2-10:2024 . 8
1 Scope . 9
2 Normative references . 9
3 Terms and definitions . 10
4 Measurement methods and acoustical environments . 12
4.1 General . 12
4.2 Direct method . 13
4.3 Comparison method . 13
4.4 Acoustical environments . 14
4.4.1 General requirements and criterion for adequacy of the test
environment . 14
4.4.2 Criterion for background noise level . 14
4.4.3 Environmental conditions . 14
4.5 Measurement uncertainties . 15
4.5.1 General . 15
4.5.2 Standard deviations on repeatability and reproducibility and standard
deviations related to declaration and verification . 15
5 Instrumentation . 15
5.1 Instrumentation for measuring acoustical data . 15
5.2 Instrumentation for measuring climatic conditions . 16
5.3 Instrumentation for measuring operating conditions . 16
6 Operation and location of appliances under test . 16
6.1 Equipping and pre-conditioning of appliances . 16
6.2 Supply of electric energy and of water or gas . 17
6.3 Climatic conditions . 17
6.4 Loading and operating of appliances during tests . 18
6.5 Location and mounting of appliances . 20
7 Measurement of sound pressure levels . 22
7.1 Microphone array, measurement surface and RSS location for essentially
free field conditions over reflecting plane(s) . 22
7.2 Microphone array and RSS location in hard-walled test rooms . 24
7.3 Microphone array and RSS location in special reverberation test rooms . 25
7.4 Measurements . 25
8 Calculation of sound pressure and sound power levels . 25
8.1 General . 25
8.2 Corrections for background noise levels . 26
8.3 Corrections for the test environment . 26
8.4 Calculation of sound pressure level averaged over the microphone positions . 26
8.5 Calculation of sound power levels with the comparison method . 27
8.6 Calculation of sound power levels in free field conditions over a reflecting
plane . 27
8.7 Calculation of A-weighted sound power level with the direct method in
special reverberation test rooms . 28
9 Information to be recorded . 28
9.1 General data . 28
9.2 Description of appliance under test . 28
9.3 Measurement method . 29
9.4 Acoustical test environment . 29
9.5 Instrumentation . 29
9.6 Equipment and pre-conditioning of appliance under test . 29
9.7 Electric supply, water supply, etc. . 29
9.8 Climatic conditions . 30
9.9 Operation of the appliance under test . 30
9.10 Location and mounting of the appliance under test. 30
9.11 Microphone array . 30
9.12 Measurement data . 30
9.13 Calculated sound pressure and sound power levels . 31
9.14 Reporting . 31
10 Information to be reported . 31
10.1 General data . 31
10.2 Appliance under test . 31
10.3 Test conditions for the appliance . 31
10.4 Acoustical data . 32
Annex A (normative) Standard test table . 33
Annex B (normative) Test enclosure . 34
Annex C (informative) Guidelines for the design of simple test rooms with essentially
free field conditions. 35
Bibliography . 36
Figure 1 – Measurement surface – parallelepiped – with key microphone positions, for
floor free-standing appliances . 22
Figure 2 – Measurement surface – parallelepiped – with key microphone positions, for
floor standing appliances placed against a wall . 23
Figure 3 – Measurement surface – parallelepiped – with key microphone positions, for
high floor-standing appliances placed against a wall . 24
Figure B.1 – Test enclosure . 34
Table 1 – Standard deviations of sound power levels . 15
Table 2 – Standard deviations for declaration and verification . 15
Table 101 – Settings and measurement time . 19
– 4 – IEC 60704-2-10:2024 EXV © IEC 2024
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
HOUSEHOLD AND SIMILAR ELECTRICAL APPLIANCES –
TEST CODE FOR THE DETERMINATION
OF AIRBORNE ACOUSTICAL NOISE –
Part 2-10: Particular requirements for ranges,
ovens, steam ovens, grills and microwave ovens
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
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8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
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This extended version (EXV) of the official IEC Standard provides the user with the full
content of the Standard.
made to IEC 60704-1:2021.
The specific content of IEC 60704-2-10:2024 is displayed on a blue background.
IEC 60704-2-10 has been prepared by subcommittee 59K: Performance of household and
similar electrical cooking appliances, of IEC technical committee 59: Performance of
household and similar electrical appliances. It is an International Standard.
This third edition cancels and replaces the second edition published in 2011. This edition
constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
a) alignment with the fourth edition of IEC 60704-1:2021;
b) alignment with IEC 60350-1:2023 regarding the definitions and settings;
c) introduction of the measurement of the steam function;
d) revision of settings and test parameters.
The text of this International Standard is based on the following documents:
Draft Report on voting
59K/396/FDIS 59K/398/RVD
Full information on the voting for its approval can be found in the report on voting indicated in
the above table.
The language used for the development of this International Standard is English.
This document was drafted in accordance with ISO/IEC Directives, Part 2, and developed in
accordance with ISO/IEC Directives, Part 1 and ISO/IEC Directives, IEC Supplement,
available at www.iec.ch/members_experts/refdocs. The main document types developed by
IEC are described in greater detail at www.iec.ch/publications.
This document is intended to be used in conjunction with IEC 60704-1:2021, Household and
similar electrical appliances – Test code for the determination of airborne acoustical noise –
Part 1: General requirements.
The relevant text of IEC 60704‑1:2021 as amended by this publication establishes the test
code ranges, ovens, steam ovens, grills and microwave ovens.
This document supplements or modifies the corresponding clauses in IEC 60704-1:2021.
When a particular subclause of IEC 60704-1:2021 is not mentioned in this document, that
subclause is applicable as far as reasonable. Where this document states "addition",
"modification" or "replacement", the relevant requirements, test specifications or explanatory
matter in IEC 60704-1:2021 are to be adapted accordingly.
Subclauses, tables and figures that are numbered starting from 101 are additional to those in
IEC 60704-1:2021. Additional annexes are lettered AA, BB, etc.
Unless notes are in a new subclause or involve notes in IEC 60704-1:2021, they are
numbered starting from 101, including those in a replaced clause or subclause.
In this standard, the following print types are used:
• terms defined in Clause 3: bold type.
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.
– 6 – IEC 60704-2-10:2024 EXV © IEC 2024
The committee has decided that the contents of this document will remain unchanged until the
stability date indicated on the IEC website under webstore.iec.ch in the data related to the
specific document. At this date, the document will be
• reconfirmed,
• withdrawn, or
• revised.
IMPORTANT – The "colour inside" logo on the cover page of this document indicates
that it contains colours which are considered to be useful for the correct
understanding of its contents. Users should therefore print this document using a
colour printer.
INTRODUCTION to IEC 60704-1:2021
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) be kept at a modest level.
The results of noise measurements are 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 are 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 3743‑1:2010, ISO 3743-2:2018 and ISO 3744:2010.
The adoption of these methods permits the use of hemi-anechoic 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 9614-1:1993, ISO 9614-2:1996, and
ISO 9614-3:2002 is applicable under special conditions, which are described in specific parts
of the IEC 60704-2 series.
This test code is concerned with airborne noise only. In some cases, structure-borne noise,
for example transmitted to the adjoining room, can be of importance.
– 8 – IEC 60704-2-10:2024 EXV © IEC 2024
INTRODUCTION to IEC 60704-2-10:2024
The measuring conditions specified in this document provide for sufficient accuracy in
determining the noise emitted and comparing the results of measurements taken by different
laboratories, whilst simulating as far as possible the practical use of ranges, ovens, steam
ovens, grills and microwave ovens.
It is recommended to consider the determination of noise levels as part of a comprehensive
testing procedure covering many aspects of the properties and performance of household
appliances.
NOTE As stated in the Introduction to IEC 60704-1, this test code is concerned with airborne noise only.
HOUSEHOLD AND SIMILAR ELECTRICAL APPLIANCES –
TEST CODE FOR THE DETERMINATION
OF AIRBORNE ACOUSTICAL NOISE –
Part 2-10: Particular requirements for ranges,
ovens, steam ovens, grills and microwave ovens
1 Scope
This part of IEC 60704 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 conditions similar to those found in households, for
example in inns, coffee houses, tea rooms, hotels, barber or hairdresser shops, launderettes,
etc., if not otherwise specified in the IEC 60704-2 series.
This document does not apply to
– appliances, equipment, or machines designed exclusively for industrial or professional
purposes;
– appliances that are integrated parts of a building or its installations, such as equipment for
air conditioning, heating and ventilating (except household fans, cooker hoods, free-
standing heating appliances, dehumidifiers, air cleaners, and stand-alone water heaters),
oil burners for central heating, pumps for water supply and for sewage systems;
– separate motors or generators and
– appliances exclusively for outdoor use.
For determining and verifying noise emission values declared in product specifications, see
IEC 60704-3:2019.
These particular requirements apply to ranges, ovens, steam ovens, grills and microwave
ovens for household and similar use.
This document does not apply to hobs.
This document does not apply to appliances or parts of appliances that use gas energy.
Requirements for the declaration of noise emission values are not within the scope of this
document.
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 60350-1:2023, Household electric cooking appliances – Part 1: Ranges, ovens, steam
ovens and grills – Methods for measuring performance
IEC 60704-2 (all parts), Household and similar electrical appliances – Test code for the
determination of airborne acoustical noise
– 10 – IEC 60704-2-10:2024 EXV © IEC 2024
IEC 60704-3:2019, 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
IEC 60705:– , Household microwave ovens – Methods for measuring performance
IEC 61260-1:2014, Electroacoustics – Octave-band and fractional-octave-band filters – Part 1:
Specifications
IEC 61672-1:2013, Electroacoustics – Sound level meters – Part 1: Specifications
ISO 3743-1:2010, Acoustics – Determination of sound power levels of noise sources –
Engineering methods for small, movable sources in reverberant fields – Part 1: Comparison
method for hard-walled test rooms
ISO 3743-2:2018, Acoustics – Determination of sound power levels of noise sources using
sound pressure – Engineering methods for small, movable sources in reverberant fields –
Part 2: Methods for special reverberation test rooms
ISO 3744:2010, Acoustics – Determination of sound power levels of noise sources using
sound pressure – Engineering method in an essentially free field over a reflecting plane
ISO 9614-1:1993, Acoustics – Determination of sound power levels of noise sources using
sound intensity – Part 1: Measurement at discrete points
ISO 9614-2:1996, Acoustics – Determination of sound power levels of noise sources using
sound intensity – Part 2: Measurement by scanning
ISO 9614-3:2002, Acoustics – Determination of sound power levels of noise sources using
sound intensity – Part 3: Precision method for measurement by scanning
ISO 6926:2016, Acoustics – Requirements for the performance and calibration of reference
sound sources used for the determination of sound power levels
ISO 12001:1996, Acoustics – Noise emitted by machinery and equipment – Rules for the
drafting and presentation of a noise test code
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply. Terms and
definitions pertinent to the determination of sound power levels can be found in ISO 3743-
1:2010, ISO 3743-2:2018 and ISO 3744:2010.
ISO and IEC maintain terminological databases for use in standardization at the following
addresses:
• IEC Electropedia: available at http://www.electropedia.org/
• ISO Online browsing platform: available at http://www.iso.org/obp
3.1
measurement time interval
portion or a multiple of an operational period or operational cycle for which the sound power
levels are determined
—————————
Under preparation. Stage at the time of publication: IEC FDIS 60705:2024.
3.2
operational period
interval of time during which a specified process is accomplished by the appliance under test
(for example, washing or rinsing or drying for a dishwasher)
3.3
operational cycle
specific sequence of operational periods occurring while the appliance under test performs a
complete work cycle
Note 1 to entry: During the operational cycle, each operational period is associated with a specific process that
can occur only once, or can be repeated (for example, washing and rinsing and drying for a dishwasher).
3.4
time history
continuous recording of the sound pressure level (for a distinct microphone position) as a
function of time, which is obtained during one or more operational periods of an operational
cycle
3.5
reference box
hypothetical right parallelepiped terminating on the reflecting plane(s) on which the noise
source under test is located, that just encloses the source including all the significant sound
radiating components and any test table on which the source is mounted
[SOURCE: ISO 3744:2010, 3.10, modified – The note has been omitted.]
3.6
test enclosure
enclosure used for simulating the typical acoustic built-in or/and mounting conditions
3.101
grill
appliance or part of an appliance in which food is cooked by radiant heating
[SOURCE: IEC 60350-1:2023, 3.6]
3.102
steam function
heat transmission to the food mainly by condensation of steam at ambient pressure
(approximately 100 kPa) and with a temperature ≤100 °C
[SOURCE: IEC 60350-1:2023, 3.21]
3.103
hot steam function
heat transmission to the food by generated steam in combination with radiation or convection,
or a combination of both, at ambient pressure (approximately 100 kPa) and with a
temperature > 100 °C
[SOURCE: IEC 60350-1:2023, 3.9]
3.104
heating function
heat transmission by natural or forced air circulation, or radiation for baking and roasting
EXAMPLE
• Forced air circulation function which heats food mainly by circulating the air with the aid of a fan;
– 12 – IEC 60704-2-10:2024 EXV © IEC 2024
• conventional heating function which heats food mainly by natural convection of the air;
• or a combination of both functions.
Note 1 to entry: Heat transmission by steam or by microwave power, also in combination with any heating
function, is excluded.
[SOURCE: IEC 60350-1:2023, 3.7]
3.105
microwave function
function using only electromagnetic energy in one or several of the ISM frequency bands
between 300 MHz and 30 GHz for heating food and beverages in a cavity
[SOURCE: IEC 60705:–, 3.5]
3.106
combination microwave function
heat transfer by electromagnetic energy simultaneously or consecutively with energy transfer
by forced air circulation, conventional heating, by hot steam or by steam
[SOURCE: IEC 60705:–, 3.2, modified – the note has been removed.]
3.107
multiple cavity appliance
appliance that has more than one separate cavity in which food is cooked and which can be
controlled independently, but cannot be installed separately
[SOURCE: IEC 60350-1:2023, 3.10]
4 Measurement methods and acoustical environments
4.1 General
This document is concerned with objective methods of engineering accuracy grade 2 in
, expressed in
accordance with ISO 12001:1996 for determining sound power levels LW
decibels (dB), with 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.
Methods for determining sound power levels with precision accuracy grade 1 in accordance
with ISO 12001:1996, as specified for example in ISO 3741 and ISO 3745, are not included in
this document. They may, however, be applied if the appropriate test environment and
instrumentation are available.
NOTE 1 The noise values obtained under the described conditions of this document will not necessarily
correspond to the noise experienced under the operational conditions of practical use.
NOTE 2 For quality control during production etc., simplified methods can be appropriate. For noise reduction
purposes, other measurement methods employing, for example, narrow-band analysis or intensity techniques
usually have to be applied. These methods are not covered by this document.
The total noise emitted by machinery or equipment and radiated in all directions to the space
surrounding the machine can be characterized by the sound power of the machine. Within the
accuracy range of this document, the sound power of a machine is basically independent of
the environment in which the machine is installed
Therefore, the concept of sound power level has been chosen for expressing the noise
emission of appliances for household and similar purposes.
The preferred noise emission quantity is the A-weighted sound power level, L , in dB
WA
(re 1 pW).
According to this document, two principal methods exist, the direct method and the
comparison method, as described in 4.2 and 4.3. These two methods can be used
alternatively.
Different types of environments, as described in 4.4, may be used. A part of the IEC 60704-2
series may, if necessary, exclude one or several combinations among those available.
4.2 Direct method
The direct method can be used only for measurements in qualified test environments in
accordance with ISO 3744:2010 for free field conditions over reflecting plane(s), and in
accordance with ISO 3743-2:2018 for special reverberation test rooms.
With this method, the sound power level is determined
– in free field conditions over reflecting plane(s), from time-averaged sound pressure levels
(on a mean-square basis) over the measurement surface and from the area of the
measurement surface, S, or
– in reverberation and special reverberation test rooms, from averaged sound pressure
levels, and from the reverberation time and the volume of the test room.
If for a measurement in a free field, reverberation or special reverberation room is not
possible because the appliance cannot be placed or operated in such an environment, the
intensity method in accordance with ISO 9614-1:1993, ISO 9614-2:1996, and ISO 9614-
3:2002 shall be applied. For the intensity method, the standard deviations given in the parts of
the IEC 60704-2 series and IEC 60704-3:2019 are not applicable unless stated explicitly.
These methods yield results expressed in A-weighted sound power levels (and in octave- or
1/3 octave-band sound power levels, if required) that are calculated directly from measured
sound pressure levels.
NOTE This method can also be used in conjunction with more precise methods, such as those given in ISO 3741
and ISO 3745.
If pure tone components are present in the noise emitted by the source, the estimated
standard deviation of the measured sound pressure levels in the special reverberation room
can increase. In such cases additional microphone positions or source positions are
necessary as specified in ISO 3743-2.
4.3 Comparison method
The comparison method for measurement is explicitly described in ISO 3743-1:2010 and in
ISO 3743-2:2018.
NOTE The term "comparison method" is not explicitly given in ISO 3744:2010, but when applying the "absolute
comparison test" for the determination of the environmental correction given in A.3 of ISO 3744:2010, by using a
reference sound source, the procedure is, in fact, a comparison method.
With this method, the sound power level is determined by comparing the averaged values (on
a mean-square basis) of the sound pressure levels produced by the source in the test room to
the averaged values of the sound pressure levels produced in the same room by a calibrated
reference sound source (RSS) of known sound power output, complying with the requirements
of ISO 6926:2016. The difference in sound pressure levels is equal to the difference in sound
power levels when conditions are the same for both sets of measurements.
– 14 – IEC 60704-2-10:2024 EXV © IEC 2024
This method yields results expressed in octave- or 1/3 octave-band sound power levels, and
the A-weighted sound power level is calculated from the octave- or 1/3 octave-band sound
power levels.
To check whether there is a systematic difference between results obtained in different
environments, the use of the comparison method is recommended.
If pure tone components are present in the noise emitted by the source, the estimated
standard deviation of the measured sound pressure levels in the hard-walled test room or in
the special reverberation room can increase. In such cases additional microphone positions or
source positions are necessary as specified in ISO 3743-1 or ISO 3743-2.
4.4 Acoustical environments
4.4.1 General requirements and criterion for adequacy of the test environment
They are given in the following clauses:
– Clause 4 of ISO 3743-1:2010 for hard-walled test rooms;
– Clause 5 of ISO 3743-2:2018 for special reverberation test rooms and
– Clause 4 of ISO 3744:2010 for free-field conditions over a reflecting plane.
A classification of different types of noise is given in ISO 12001:1996. The method specified
in ISO 3744:2010 is suitable for measurements of all types of noise emitted by household
appliances. The methods specified in ISO 3743-1:2010 and ISO 3743-2:2018 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 of the IEC 60704-2 series.
The method specified in ISO 3744:2010 is applicable to noise sources of any size. Limitations
for the size of the source are given in 4.2 of ISO 3743-1:2010 and in Clause 5 of
ISO 3743-2:2018. This will be taken into account in the preparation of parts of the
IEC 60704-2 series.
NOTE For free-field conditions over a reflecting plane, the absolute comparison test for the qualification of the
environment, described in Clause A.2 of ISO 3744:2010, is preferred.
Guidelines for the design of simple test rooms with free-field conditions are given in Annex C.
Guidelines for the design of a suitable special reverberation test room are given in
ISO 3743-2:2018, Annex A.
4.4.2 Criterion for background noise level
Requirements for the background noise level are given in 4.5 of ISO 3743-1:2010, in 6.5 of
ISO 3743-2:2018 and in 4.2 of ISO 3744:2010. Averaged over the microphone positions, the
background noise level shall be at least 6 dB below, and preferably more than 15 dB below,
the sound pressure level to be measured.
NOTE If the difference between the sound pressure levels of the background noise and the appliance noise is
less than 6 dB, see 8.2.
4.4.3 Environmental conditions
Environmental conditions having an adverse effect on the microphone used for the
measurements (for example, strong electric or magnetic fields, wind, impingement of air
discharge from the equipment being tested, high or low temperatures) shall be avoided by
proper selection or positioning of the microphone.
The instructions of the manufacturers of the measurement instruments regarding adverse
environmental conditions shall be followed. The microphone shall always be oriented in such
a way that the angle of incidence of the sound waves is that for which the microphone is
calibrated.
4.5 Measurement uncertainties
4.5.1 General
The estimated values of the standard deviations of reproducibility of sound power levels
determined in accordance with this document are given in 9.1 of ISO 3743-1:2010, in 11.1 of
ISO 3743‑2:2018 and in 9.1 of ISO 3744:2010. But for a particular family of appliances of
similar size with similar operating conditions, the standard deviations of reproducibility can be
smaller than these values. Hence, in the IEC 60704-2 series, standard deviations smaller than
those listed in ISO standards can be stated if substantiation is available from the results of
suitable interlaboratory tests.
In the case of discrepancies between the measurements where the results normally remain
inside the foreseen standard deviation, it can be helpful to perform measurements according
to the upper grade of accuracy: grade 1, laboratory or precision, as described in ISO 3741 or
ISO 3745.
4.5.2 Standard deviations on repeatability and reproducibility and standard
deviations related to declaration and verification
The estimated values of standard deviations of sound power levels, determined according to
this document are given in Table 1.
Table 1 – Standard deviations of sound power levels
Standard deviation
dB
σ (repeatability) σ (reproducibility)
r R
estimated 0,4 estimated 1,0
For the purpose of determining and verifying declared noise emission values according to
IEC 60704-3, the values in Table 2 apply:
Table 2 – Standard deviations for declaration and verification
Standard deviation
dB
σ (production) σ (total) σ (reference)
P t M
estimated 1,0 to 1,7 estimated 1,4 to 2,0 2,0
NOTE The standard deviation of repeatability, reproducibility and production and the total standard deviation have
not been verified recently. Because of technical development of the appliances it is possible that these values are
not correct anymore. Especially for steaming function the correct standard deviations can be different to the values
given here.
5 Instrumentation
5.1 Instrumentation for measuring acoustical data
Requirements for the instrumentation system and for its calibration are given in Clause 5 of
ISO 3743-1:2010, in Clause 7 of ISO 3743-2:2018 and in Clause 5 of ISO 3744:2010.
– 16 – IEC 60704-2-10:2024 EXV © IEC 2024
The instrumentation system shall meet the requirements for a type 1 instrument laid down in
IEC 61672-1:2013, in accordance with the basic standard used. For measurements in octave-
and 1/3 octave-bands, the instrumentation system shall meet the requirements of
IEC 61260‑1:2014.
RSS shall meet the requirements of ISO 6926:2016, and shall be calibrated annually.
The use of a windscreen shall be considered. If necessary, the observed sound pressure level
shall be corrected for changes in the microphone sensitivity, in accordance with the
instructions accompanying the instrumentation.
5.2 Instrumentation for measuring climatic conditions
5.2.1 The temperature is determined with instruments having an accuracy of ±1 °C.
5.2.2 The relative humidity is determined with instruments having an absolute accuracy of
±2 % within the measuring range.
5.2.3 The absolute air pressure is determined with instruments having an accuracy of
±0,5 kPa.
5.3 Instrumentation for measuring operating conditions
5.3.1 The voltage at the plug of the cable or cord of mains-powered appliances is
measured with voltmeters having an accuracy of class 0,5 instruments.
5.3.2 The voltage at the battery terminals of battery-powered appliances is measured with
voltmeters having an accuracy of class 0,5 instruments.
5.3.3 The rotational speed of motors, attachments, etc. is measured, if necessary, with
speed indicators having an accuracy of ±1 % of full scale.
6 Operation and location of appliances under test
6.1 Equi
...
IEC 60704-2-10 ®
Edition 3.0 2024-09
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Household and similar electrical appliances – Test code for the determination of
airborne acoustical noise –
Part 2-10: Particular requirements for ranges, ovens, steam ovens, grills and
microwave ovens
Appareils électrodomestiques et analogues – Code d'essai pour la détermination
du bruit aérien –
Partie 2-10: Exigences particulières pour les cuisinières, les fours, les fours à
vapeur, les grils et les fours à micro-ondes
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IEC 60704-2-10 ®
Edition 3.0 2024-09
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Household and similar electrical appliances – Test code for the determination of
airborne acoustical noise –
Part 2-10: Particular requirements for ranges, ovens, steam ovens, grills and
microwave ovens
Appareils électrodomestiques et analogues – Code d'essai pour la détermination
du bruit aérien –
Partie 2-10: Exigences particulières pour les cuisinières, les fours, les fours à
vapeur, les grils et les fours à micro-ondes
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 17.140.20, 97.040.20 ISBN 978-2-8322-9582-3
– 2 – IEC 60704-2-10:2024 © IEC 2024
CONTENTS
FOREWORD . 3
INTRODUCTION . 6
1 Scope . 7
2 Normative references . 7
3 Terms and definitions . 7
4 Measurement methods and acoustical environments . 8
5 Instrumentation . 9
5.1 Instrumentation for measuring acoustical data . 9
6 Operation and location of appliance under test . 10
6.1 Equipping and pre-conditioning of appliances . 10
6.2 Supply of electrical energy and of water or gas . 10
7 Measurement of sound pressure levels . 12
9 Information to be recorded . 12
10 Information to be reported . 12
Annex A . 13
Table 1 – Standard deviations of sound power levels . 9
Table 2 – Standard deviations for declaration and verification . 9
Table 101 – Settings and measurement time . 11
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
HOUSEHOLD AND SIMILAR ELECTRICAL APPLIANCES –
TEST CODE FOR THE DETERMINATION
OF AIRBORNE ACOUSTICAL NOISE –
Part 2-10: Particular requirements for ranges,
ovens, steam ovens, grills and microwave ovens
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 this end and
in addition to other activities, IEC publishes International Standards, Technical Specifications, Technical Reports,
Publicly Available Specifications (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.
2) 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.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
Committees in that sense. While all reasonable efforts 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
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4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
transparently to the maximum extent possible in their national and regional publications. Any divergence between
any IEC Publication and the corresponding national or regional publication shall be clearly indicated in the latter.
5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity
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services carried out by independent certification bodies.
6) All users should ensure that they have the latest edition of this publication.
7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
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Publications.
8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) IEC draws attention to the possibility that the implementation of this document may involve the use of (a)
patent(s). IEC takes no position concerning the evidence, validity or applicability of any claimed patent rights in
respect thereof. As of the date of publication of this document, IEC had not received notice of (a) patent(s), which
may be required to implement this document. However, implementers are cautioned that this may not represent
the latest information, which may be obtained from the patent database available at https://patents.iec.ch. IEC
shall not be held responsible for identifying any or all such patent rights.
IEC 60704-2-10 has been prepared by subcommittee 59K: Performance of household and
similar electrical cooking appliances, of IEC technical committee 59: Performance of household
and similar electrical appliances. It is an International Standard.
This third edition cancels and replaces the second edition published in 2011. This edition
constitutes a technical revision.
– 4 – IEC 60704-2-10:2024 © IEC 2024
This edition includes the following significant technical changes with respect to the previous
edition:
a) alignment with the fourth edition of IEC 60704-1:2021;
b) alignment with IEC 60350-1:2023 regarding the definitions and settings;
c) introduction of the measurement of the steam function;
d) revision of settings and test parameters.
The text of this International Standard is based on the following documents:
Draft Report on voting
59K/396/FDIS 59K/398/RVD
Full information on the voting for its approval can be found in the report on voting indicated in
the above table.
The language used for the development of this International Standard is English.
This document was drafted in accordance with ISO/IEC Directives, Part 2, and developed in
accordance with ISO/IEC Directives, Part 1 and ISO/IEC Directives, IEC Supplement, available
at www.iec.ch/members_experts/refdocs. The main document types developed by IEC are
described in greater detail at www.iec.ch/publications.
This document is intended to be used in conjunction with IEC 60704-1:2021, Household and
similar electrical appliances – Test code for the determination of airborne acoustical noise –
Part 1: General requirements.
The relevant text of IEC 60704‑1:2021 as amended by this publication establishes the test code
ranges, ovens, steam ovens, grills and microwave ovens.
This document supplements or modifies the corresponding clauses in IEC 60704-1:2021. When
a particular subclause of IEC 60704-1:2021 is not mentioned in this document, that subclause
is applicable as far as reasonable. Where this document states "addition", "modification" or
"replacement", the relevant requirements, test specifications or explanatory matter in
IEC 60704-1:2021 are to be adapted accordingly.
Subclauses, tables and figures that are numbered starting from 101 are additional to those in
IEC 60704-1:2021. Additional annexes are lettered AA, BB, etc.
Unless notes are in a new subclause or involve notes in IEC 60704-1:2021, they are numbered
starting from 101, including those in a replaced clause or subclause.
In this standard, the following print types are used:
• terms defined in Clause 3: bold type.
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 webstore.iec.ch in the data related to the
specific document. At this date, the document will be
• reconfirmed,
• withdrawn, or
• revised.
– 6 – IEC 60704-2-10:2024 © IEC 2024
INTRODUCTION
The measuring conditions specified in this document provide for sufficient accuracy in
determining the noise emitted and comparing the results of measurements taken by different
laboratories, whilst simulating as far as possible the practical use of ranges, ovens, steam
ovens, grills and microwave ovens.
It is recommended to consider the determination of noise levels as part of a comprehensive
testing procedure covering many aspects of the properties and performance of household
appliances.
NOTE As stated in the Introduction to IEC 60704-1, this test code is concerned with airborne noise only.
HOUSEHOLD AND SIMILAR ELECTRICAL APPLIANCES –
TEST CODE FOR THE DETERMINATION
OF AIRBORNE ACOUSTICAL NOISE –
Part 2-10: Particular requirements for ranges,
ovens, steam ovens, grills and microwave ovens
1 Scope
Addition:
These particular requirements apply to ranges, ovens, steam ovens, grills and microwave
ovens for household and similar use.
This document does not apply to hobs.
This document does not apply to appliances or parts of appliances that use gas energy.
Requirements for the declaration of noise emission values are not within the scope of this
document.
2 Normative references
Addition:
IEC 60350-1:2023, Household electric cooking appliances – Part 1: Ranges, ovens, steam
ovens and grills – Methods for measuring performance
IEC 60705:– , Household microwave ovens – Methods for measuring performance
3 Terms and definitions
Addition:
3.101
grill
appliance or part of an appliance in which food is cooked by radiant heating
[SOURCE: IEC 60350-1:2023, 3.6]
3.102
steam function
heat transmission to the food mainly by condensation of steam at ambient pressure
(approximately 100 kPa) and with a temperature ≤100 °C
[SOURCE: IEC 60350-1:2023, 3.21]
___________
Under preparation. Stage at the time of publication: IEC FDIS 60705:2024.
– 8 – IEC 60704-2-10:2024 © IEC 2024
3.103
hot steam function
heat transmission to the food by generated steam in combination with radiation or convection,
or a combination of both, at ambient pressure (approximately 100 kPa) and with a temperature
> 100 °C
[SOURCE: IEC 60350-1:2023, 3.9]
3.104
heating function
heat transmission by natural or forced air circulation, or radiation for baking and roasting
EXAMPLE
• Forced air circulation function which heats food mainly by circulating the air with the aid of a fan;
• conventional heating function which heats food mainly by natural convection of the air;
• or a combination of both functions.
Note 1 to entry: Heat transmission by steam or by microwave power, also in combination with any heating function,
is excluded.
[SOURCE: IEC 60350-1:2023, 3.7]
3.105
microwave function
function using only electromagnetic energy in one or several of the ISM frequency bands
between 300 MHz and 30 GHz for heating food and beverages in a cavity
[SOURCE: IEC 60705:–, 3.5]
3.106
combination microwave function
heat transfer by electromagnetic energy simultaneously or consecutively with energy transfer
by forced air circulation, conventional heating, by hot steam or by steam
[SOURCE: IEC 60705:–, 3.2, modified – the note has been removed.]
3.107
multiple cavity appliance
appliance that has more than one separate cavity in which food is cooked and which can be
controlled independently, but cannot be installed separately
[SOURCE: IEC 60350-1:2023, 3.10]
4 Measurement methods and acoustical environments
4.2 Direct method
Addition:
If pure tone components are present in the noise emitted by the source, the estimated standard
deviation of the measured sound pressure levels in the special reverberation room can increase.
In such cases additional microphone positions or source positions are necessary as specified
in ISO 3743-2.
4.3 Comparison method
Addition:
If pure tone components are present in the noise emitted by the source, the estimated standard
deviation of the measured sound pressure levels in the hard-walled test room or in the special
reverberation room can increase. In such cases additional microphone positions or source
positions are necessary as specified in ISO 3743-1 or ISO 3743-2.
4.5 Measurement uncertainty
4.5.2 Standard deviations on repeatability and reproducibility and standard deviations
related to declaration and verification
Replacement:
The estimated values of standard deviations of sound power levels, determined according to
this document are given in Table 1.
Table 1 – Standard deviations of sound power levels
Standard deviation
dB
σ (repeatability) σ (reproducibility)
r R
estimated 0,4 estimated 1,0
For the purpose of determining and verifying declared noise emission values according to
IEC 60704-3, the values in Table 2 apply:
Table 2 – Standard deviations for declaration and verification
Standard deviation
dB
σ (production) σ (total) σ (reference)
P t M
estimated 1,0 to 1,7 estimated 1,4 to 2,0 2,0
NOTE The standard deviation of repeatability, reproducibility and production and the total standard deviation have
not been verified recently. Because of technical development of the appliances it is possible that these values are
not correct anymore. Especially for steaming function the correct standard deviations can be different to the values
given here.
5 Instrumentation
5.1 Instrumentation for measuring acoustical data
Addition:
The use of a windscreen shall be considered. If necessary, the observed sound pressure level
shall be corrected for changes in the microphone sensitivity, in accordance with the instructions
accompanying the instrumentation.
– 10 – IEC 60704-2-10:2024 © IEC 2024
6 Operation and location of appliance under test
6.1 Equipping and pre-conditioning of appliances
6.1.1
Replacement:
For the measurement of a heating function or a grill, all accessories shall be removed. Side
racks shall be removed if they can be removed without a tool.
For the measurement of a microwave function, the appliance shall be equipped with the
accessory needed for positioning the water load.
For the measurement of a steam function, all accessories are removed. The fresh water tank
shall be completely filled. The tank for condensed water shall be empty. If the appliance can be
connected to water supply and drainage, these connections shall be used.
For measurement of a function, which can use a rotary spit, the appliance shall be equipped
with drive units and accessories that are necessary to run the motor(s).
If the appliance is disconnected from the mains, it shall be ensured that required basic settings,
like the time, are set and finalized before starting the measurement.
6.1.3
Addition:
The appliance is equipped according to 6.1.1. For heating, grill and steam function the
appliance shall have been in operation for at least 10 min at any setting. For microwave
function the appliance shall have been in operation for at least 1 min at any setting.
6.1.4
Replacement:
Stabilising is included in the operation, according to 6.4.2.
6.2 Supply of electrical energy and of water or gas
6.2.2 and 6.2.3 Not applicable.
6.4 Loading and operating of appliances during test
6.4.2
Replacement:
Table 101 specifies the setting(s) to be chosen and the measurement time(s).
Table 101 – Settings and measurement time
Function under test Setting Measurement time Additional information
Heating function Temperature setting within the Heat up the appliance Without any load and
range of 170 °C to 190 °C. 10 min then operate the without any shelf or grid.
In general, the
appliance for a further
highest noise If a fast preheating function
30 min. Within these
emission occurs for is available, this is activated.
30 min, 3 measurements
heating functions
are carried out with a
with forced air
measurement period of
circulation when the
5 min each. The time of
fan is running.
these 3 measurements is
randomly chosen within
the 30 min.
The final result is the
logarithmic mean of these
three measurements.
Steam function Temperature setting at 100 °C Noise measurement starts Without any load and
immediately after the without any shelf, grid
If the temperature cannot be
steam function has and steaming accessory.
set due to the construction of
started. The
the control, the nearest setting Before a noise
measurement period is
related to the specified measurement is done the
900 s ± 10 s.
temperature is chosen. appliances shall be
operated at steam
function for at least
30 min to ensure that
possible calibration is
performed. After the
calibration cycle, residual
water shall be removed in
accordance with the
manual instructions.
st
Microwave function Noise measurement starts Load: glass container with
1 measurement with power
30 s ± 5 s after the 1 000 g water. The glass
level MAX.
microwave function was container is positioned on
nd
2 measurement with a power
started. the food support. If the
level MIN.
turntable can be switched
Measurement periods are
on/off, it shall be switched
At least the loudest value 60 s ± 10 s for both
on. The glass container
shall be reported.
measurements. It is not
specified in IEC 60705:–,
necessary to cool the
Clause 8 can be
...
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