IEC 60704-2-13:2000/AMD1:2005

Amendment 1 - Household and similar electrical appliances - Test code for the determination of airborne acoustical noise - Part 2-13: Particular requirements for range hoods

Amendement 1 - Appareils électrodomestiques et analogues - Code d'essai pour la détermination du bruit aérien - Partie 2-13: Règles particulières pour les hottes de cuisine

General Information

• Status: Published
• Publication Date: 15-Dec-2005
• ICS: 17.140.20 - Noise emitted by machines and equipment
• ICS: 97.040.20 - Cooking ranges, working tables, ovens and similar appliances
• Technical Committee: TC 59 - Performance of household and similar electrical appliances
• Drafting Committee: JWG 2 - TC 59/JWG 2
• Current Stage: DELPUB - Deleted Publication
• Completion Date: 27-Jan-2011

Relations

• Amends: IEC 60704-2-13:2000 - Household and similar electrical appliances - Test code for the determination of airborne acoustical noise - Part 2-13: Particular requirements for range hoods
• Effective Date: 05-Sep-2023
• Revised: IEC 60704-2-13:2011 - Household and similar electrical appliances - Test code for the determination of airborne acoustical noise - Part 2-13: Particular requirements for range hoods
• Effective Date: 05-Sep-2023

Standards Content (Sample)

INTERNATIONAL IEC
STANDARD 60704-2-13
AMENDMENT 1
2005-12
Amendment 1
Household and similar electrical appliances –
Test code for the determination
of airborne acoustical noise –
Part 2-13:
Particular requirements for range hoods

 IEC 2005 Droits de reproduction réservés  Copyright - all rights reserved
International Electrotechnical Commission, 3, rue de Varembé, PO Box 131, CH-1211 Geneva 20, Switzerland
Telephone: [phone] Telefax: [phone] E-mail: [e-mail] Web: www.iec.ch
PRICE CODE
Commission Electrotechnique Internationale K

International Electrotechnical Commission
МеждународнаяЭлектротехническаяКомиссия
For price, see current catalogue

– 2 – 60704-2-13 Amend. 1  IEC:2005(E)

FOREWORD
This amendment has been prepared by IEC technical committee 59: Performance of

household electrical appliances.

The text of this amendment is based on the following documents:

FDIS Report on voting
59/422/FDIS 59/432A/RVD
Full information on the voting for the approval of this amendment can be found in the report
on voting indicated in the above table.
The committee has decided that the contents of this amendment and the base publication will
remain unchanged until the maintenance result date indicated on the IEC web site under
"http://webstore.iec.ch" in the data related to the specific publication. At this date, the
publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
_____________
INTRODUCTION
This amendment introduces a description of the intensimetric method for the determination of
sound power levels of range hoods in addition to the other methods described in the standard,
for the use of which the text of IEC 60704-2-13 remains unchanged. According to the method
described here, the sound power level is obtained by measuring the component of sound
intensity normal to a measurement surface that surrounds the range hood.
Page 3
CONTENTS
Add, after the listing for Annex AA, the title of the new bibliography as follows:
Bibliography
Page 11
1 Scope and object
1.1.1 General
Add, to the existing text, the following new paragraph:
Intensimetric method for the determination of sound power levels shall not be used for the
purpose of verification.
60704-2-13 Amend. 1  IEC:2005(E) – 3 –

1.1.2 Types of noise
Replace the existing text of the addition by the following new text:

Addition:
The method is applicable to any source for which a physically stationary measurement

surface can be defined, and on which the noise generated by the source is stationary in time

(as defined in Clause 3), therefore it is not suitable for sources of impulsive noise consisting

of short duration noise bursts. This method is not suitable if the source under test has

significant noise over 6,3 kHz in one-third-octave band centre frequencies and over 4 kHz in

one-octave band centre frequencies.
1.1.3 Size of the source
Replace the existing text of the replacement by the following new text:
Replacement:
The size of the noise source is unrestricted. The extent of the source is defined by the choice
of the measurement surface.
Page 13
Add the following subclause:
1.3 Measurement uncertainty
Replacement:
The uncertainty in the determination of the sound power level of a noise source is related:
– to the nature of the sound field of the source;
– to the nature of the extraneous sound field;
– to the absorption of the source under test;
– to the type of intensity-field sampling and measurement procedure employed.
The normal range for A-weighted data is covered by the one-octave bands from 63 Hz to
4 kHz, and the one-third-octave bands from 50 Hz to 6,3 kHz. The estimated values of
standard deviations of sound power levels, determined according to this standard for both the

discrete points method and the scanning method are as indicated in Table 101.
Table 101 – Standard deviations of sound power levels
Standard deviation (dB)
σ (repeatability) σ (reproducibility)
r R
1,5 2,0
– 4 – 60704-2-13 Amend. 1  IEC:2005(E)

2 Normative references
Add the following new references:

IEC 61043:1993, Electroacoustics – Instruments for the measurement of sound intensity –

Measurement with pairs of pressure sensing microphones

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
3 Terms and definitions
Add the following definition:
3.1
terms and definitions pertinent to determination of sound power levels

Replacement:
These may be found in ISO 9614-1 and ISO 9614-2.

Page 15
4 Measurement methods and acoustical environments
Add the following subclause:
4.1 General
Replacement:
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. The
sound power of a machine is essentially 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, in decibels (re.
1 pW).
According to this standard, one method is used, the direct method as described in 4.2 below.
4.2 Direct method
Replace the existing text of the addition with the following new text:

60704-2-13 Amend. 1  IEC:2005(E) – 5 –

Addition:
The measurement can be performed according to two intensimetric methods, the "discrete
points method" and the "scanning method", as described below.

4.2.101 Discrete points method

Define, as the measurement surface, a parallelepiped-shaped surface around the range hood;

then divide it in partial areas (segment) so as to obtain a grid. The dimension of the

parallelepiped depends on the dimension of the range hood: the distance between each face

of the parallelepiped and the range hood under test depends on the value of F and F
2 3
indicators (see annexes A and B of ISO 9614-1) but shall be at least 10 cm. The density of
measurement positions on parallelepiped faces depends on extraneous noise and on the
value of the F indicator (see annexes A and B of ISO 9614-1). The total sound power of the
source is obtained from calculation of the partial sound power of each segment of the
parallelepiped, by multiplying the "local" intensity sound by its partial area, and then by
adding all the partial sound powers (absolute value).
4.2.102 Scanning method
This method is very similar to the previous one (4.2.101), with the only difference being that
each face of the parallelepiped is not divided in partial areas, but is continuously scanned with
the intensimetric probe, and the space and time average of intensity sound is multiplied by its
area; then the total sound power of the range hood is obtained by adding the partial sound
powers of each face of the parallelepiped.
NOTE The distance of 20 cm between each face of the parallelepiped and the range hood is usually acceptable.
4.3 Comparison method
Replace the existing text of the addition with the following new text:
Not applicable.
Add the following subclauses:
4.4 Acoustical environments
4.4.1 General requirements and criterion for adequacy of the test environment
Replacement:
For the discrete points method, the general requirements and criterion for adequacy of the
test environment are given in Clauses 4 and 5 of ISO 9614-1.
For the scanning method, they are given in Clauses 4 and 5 of ISO 9614-2.
4.4.2 Criterion for background noise level
Not applicable.
– 6 – 60704-2-13 Amend. 1  IEC:2005(E)

5 Instrumentation
5.1 Instrumentation for measuring acoustical data

Add, to the existing addition, the following new paragraphs:

Sound intensity measurement instruments and probes that meet the requirements of

IEC 61043 shall be used. Class 1 instruments shall be used.

To check the instrumentation for proper operation prior to each series of measurements, the

field-check procedure specified by the manufacturer shall be applied.
6 Operation and location of appliances under test
Page 17
6.5 Location and mounting of appliances
6.5.1 Replace the existing text of the replacement with the following:
Replacement:
Range hoods not intended to be placed against a wall shall be supported by resilient means
(examples are given in Figure 102 of IEC 60704-2-13). Care shall be taken in order to avoid
any kind of interference between the supports an
...

IEC 60704-2-13
Edition 1.0 2005-12
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
AMENDMENT 1
AMENDEMENT 1
Household and similar electrical appliances – Test code for the determination of
airborne acoustical noise –
Part 2-13: Particular requirements for range hoods

Appareils électrodomestiques et analogues – Code d'essai pour la détermination
du bruit aérien –
Partie 2-13: Règles particulières pour les hottes de cuisine

IEC 60704-2-13 A1:2005
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IEC 60704-2-13
Edition 1.0 2005-12
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
AMENDMENT 1
AMENDEMENT 1
Household and similar electrical appliances – Test code for the determination of
airborne acoustical noise –
Part 2-13: Particular requirements for range hoods

Appareils électrodomestiques et analogues – Code d'essai pour la détermination
du bruit aérien –
Partie 2-13: Règles particulières pour les hottes de cuisine

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
K
CODE PRIX
ICS 17.140.20; 97.040.20 ISBN 2-8318-9538-3
– 2 – 60704-2-13 Amend. 1 © IEC:2005
FOREWORD
This amendment has been prepared by IEC technical committee 59: Performance of
household electrical appliances.
This bilingual version, published in 2008-01, corresponds to the English version.
The text of this amendment is based on the following documents:
FDIS Report on voting
59/422/FDIS 59/432A/RVD
Full information on the voting for the approval of this amendment can be found in the report
on voting indicated in the above table.
The French version of this amendment has not been voted upon.
The committee has decided that the contents of this amendment and the base publication will
remain unchanged until the maintenance result date indicated on the IEC web site under
"http://webstore.iec.ch" in the data related to the specific publication. At this date, the
publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
_____________
INTRODUCTION
This amendment introduces a description of the intensimetric method for the determination of
sound power levels of range hoods in addition to the other methods described in the standard,
for the use of which the text of IEC 60704-2-13 remains unchanged. According to the method
described here, the sound power level is obtained by measuring the component of sound
intensity normal to a measurement surface that surrounds the range hood.

Page 3
CONTENTS
Add, after the listing for Annex AA, the title of the new bibliography as follows:
Bibliography
60704-2-13 Amend. 1 © IEC:2005 – 3 –
Page 11
1 Scope and object
1.1.1 General
Add, to the existing text, the following new paragraph:
Intensimetric method for the determination of sound power levels shall not be used for the
purpose of verification.
1.1.2 Types of noise
Replace the existing text of the addition by the following new text:
Addition:
The method is applicable to any source for which a physically stationary measurement
surface can be defined, and on which the noise generated by the source is stationary in time
(as defined in Clause 3), therefore it is not suitable for sources of impulsive noise consisting
of short duration noise bursts. This method is not suitable if the source under test has
significant noise over 6,3 kHz in one-third-octave band centre frequencies and over 4 kHz in
one-octave band centre frequencies.
1.1.3 Size of the source
Replace the existing text of the replacement by the following new text:
Replacement:
The size of the noise source is unrestricted. The extent of the source is defined by the choice
of the measurement surface.
Page 13
Add the following subclause:
1.3 Measurement uncertainty
Replacement:
The uncertainty in the determination of the sound power level of a noise source is related:
– to the nature of the sound field of the source;
– to the nature of the extraneous sound field;
– to the absorption of the source under test;
– to the type of intensity-field sampling and measurement procedure employed.
The normal range for A-weighted data is covered by the one-octave bands from 63 Hz to
4 kHz, and the one-third-octave bands from 50 Hz to 6,3 kHz. The estimated values of
standard deviations of sound power levels, determined according to this standard for both the
discrete points method and the scanning method are as indicated in Table 101.

– 4 – 60704-2-13 Amend. 1 © IEC:2005
Table 101 – Standard deviations of sound power levels
Standard deviation (dB)
σ (repeatability) σ (reproducibility)
r R
1,5 2,0
2 Normative references
Add the following new references:
IEC 61043:1993, Electroacoustics – Instruments for the measurement of sound intensity –
Measurement with pairs of pressure sensing microphones
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
3 Terms and definitions
Add the following definition:
3.1
terms and definitions pertinent to determination of sound power levels
Replacement:
These may be found in ISO 9614-1 and ISO 9614-2.

Page 15
4 Measurement methods and acoustical environments
Add the following subclause:
4.1 General
Replacement:
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. The
sound power of a machine is essentially 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, in decibels (re.
1 pW).
According to this standard, one method is used, the direct method as described in 4.2 below.

60704-2-13 Amend. 1 © IEC:2005 – 5 –
4.2 Direct method
Replace the existing text of the addition with the following new text:
Addition:
The measurement can be performed according to two intensimetric methods, the "discrete
points method" and the "scanning method", as described below.
4.2.101 Discrete points method
Define, as the measurement surface, a parallelepiped-shaped surface around the range hood;
then divide it in partial areas (segment) so as to obtain a grid. The dimension of the
parallelepiped depends on the dimension of the range hood: the distance between each face
of the parallelepiped and the range hood under test depends on the value of F and F
2 3
indicators (see Annexes A and B of ISO 9614-1) but shall be at least 10 cm. The density of
measurement positions on parallelepiped faces depends on extraneous noise and on the
value of the F indicator (see Annexes A and B of ISO 9614-1). The total sound power of the
source is obtained from calculation of the partial sound power of each segment of the
parallelepiped, by multiplying the "local" intensity sound by its partial area, and then by
adding all the partial sound powers (absolute value).
4.2.102 Scanning method
This method is very similar to the previous one (4.2.101), with the only difference being that
each face of the parallelepiped is not divided in partial areas, but is continuously scanned with
the intensimetric probe, and the space and time average of intensity sound is multiplied by its
area; then the total sound power of the range hood is obtained by adding the partial sound
powers of each face of the parallelepiped.
NOTE The distance of 20 cm between each face of the parallelepiped and the range hood is usually acceptable.
4.3 Comparison method
Replace the existing text of the addition with the following new text:
Not applicable.
Add the following subclauses:
4.4 Acoustical environments
4.4.1 General requirements and criterion for adequacy of the test environment
Replacement:
For the discrete points method, the general requirements and criterion for adequacy of the
test environment are given in Clauses 4 and 5 of ISO 9614-1.
For the scanning method, they are given in Clauses 4 and 5 of ISO 9614-2.
4.4.2 Criterion for background noise level
Not applicable.
– 6 – 60704-2-13 Amend. 1 © IEC:2005
5 Instrumentation
5.1 Instrumentation for measuring acoustical data
Add, to the existing addition, the following new paragraphs:
Sound intensity measurement instruments and probes that meet the requirements of
IEC 61043 shall be used. Class 1 instruments shall be used.
To check the instrumentation for proper operation prior to each series of measurements, the
field-check procedure specified by the manufacturer shall be applied.
6 Operation and location of appliances under test

Page 17
6.5 Location and mounting of appliances
6.5.1 Replace the existing text of the replacement with the following:
Replacement:
Range hoods not intended to be placed against a wall shall be supported by resilient means
(examples are given in Figure 102 of IEC 60704-2-13). Care shall be taken in order to avoid
any kind of interference between the supports and air intake of appliance under test.
The lower edge of the appliance shall be placed at a height of 0,6 m from the horizontal
reflecting plane or from the floor of the test room.
The reference grid shall enclose the standard stand shown in Figure 102 and the range hood
under test. This parallelepiped-shaped reference surface shall be placed on the floor.

Page 19
6.5.4 Replace the existing text of the replacement with the following:
Replacement:
Range hoods intended to be placed against a wall shall be supported by resilient means
without any contact with the vertical wall (examples are given in Figure 102). Care shall be
taken in order to avoid any kind of interference between the supports and air intake of
appliance under test.
...