Comfort fans and regulators for household and similar purposes - Methods for measuring performance

IEC 60879:2019 specifies the performance-measuring methods of comfort fans and regulators for household and similar purposes, including conventional fans, tower fans and bladeless fans, their rated voltage being not more than 250 V for single-phase fans and 480 V for other fans, and their rated power input being less than 125 W.
According to the testing method, the comfort fans are classified into two groups:
– pedestal fans, table fans, wall fans, louvre fans, tower fans, bladeless fans;
– ceiling fans.
Wherever applicable, the term "fan" used in this document includes its associated regulator, if any.
This document does not apply to:
– safety of electric fans for household and similar purposes (IEC 60335-2-80);
– performance of ventilating fans (IEC 60665);
– electromagnetic compatibility of fans (CISPR 14-1 and CISPR 14-2, IEC 61000-3-2, IEC 61000-3-3).
This second edition cancels and replaces the first edition published in 1986. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous edition:
a) the definitions of fans have been revised;
b) the test methods for the different types of fans have been revised to allow modern test instrumentation to be used;
c) acoustic noise measurement and standby power measurement methods have been introduced.

Ventilateurs de confort et régulateurs de vitesse pour applications domestiques et analogues - Méthodes de mesure de l'aptitude à la fonction

L'IEC 60879:2019 spécifie les méthodes de mesure de l'aptitude à la fonction des ventilateurs de confort et des régulateurs de vitesse pour applications domestiques et analogues, notamment les ventilateurs conventionnels, les ventilateurs à colonne et les ventilateurs sans pales, présentant une tension assignée inférieure ou égale à 250 V pour les ventilateurs monophasés et inférieure ou égale à 480 V pour les autres ventilateurs, ainsi qu'une puissance absorbée nominale inférieure à 125 W.
Selon la méthode d'essai, les ventilateurs de confort se classent en deux groupes:
– ventilateurs sur pied, ventilateurs de table, ventilateurs muraux, ventilateurs rotatifs, ventilateurs à colonne, ventilateurs sans pales;
– ventilateurs de plafond.
Lorsqu'il y a lieu, le terme "ventilateur" employé dans le présent document couvre également son régulateur (si le ventilateur en est équipé d'un).
Le présent document ne s'applique pas à:
– la sécurité des ventilateurs électriques pour applications domestiques et analogues (IEC 60335-2-80);
– l'aptitude à la fonction des aérateurs (IEC 60665);
– la compatibilité électromagnétique des ventilateurs (CISPR 14-1 et CISPR 14-2, IEC 61000-3-2, IEC 61000 3-3).
Cette deuxième édition annule et remplace la première édition parue en 1986. Cette édition constitue une révision technique.
Cette édition comprend les modifications techniques majeures suivantes par rapport à l'édition précédente:
a) les définitions des ventilateurs ont été révisées;
b) les méthodes d'essai des différents types de ventilateurs ont été révisées afin de permettre l'emploi d'appareils de mesure modernes;
c) des méthodes de mesure ont été ajoutées pour les mesurages du bruit acoustique et de la consommation d'électricité.

General Information

Status
Published
Publication Date
21-May-2019
Current Stage
PPUB - Publication issued
Completion Date
22-May-2019
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IEC 60879
Edition 2.0 2019-05
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Comfort fans and regulators for household and similar purposes – Methods for
measuring performance
Ventilateurs de confort et régulateurs de vitesse pour applications domestiques
et analogues – Méthodes de mesure de l'aptitude à la fonction
IEC 60879:2019-05(en-fr)
---------------------- Page: 1 ----------------------
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---------------------- Page: 2 ----------------------
IEC 60879
Edition 2.0 2019-05
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Comfort fans and regulators for household and similar purposes – Methods for
measuring performance
Ventilateurs de confort et régulateurs de vitesse pour applications domestiques
et analogues – Méthodes de mesure de l'aptitude à la fonction
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 23.120 ISBN 978-2-8322-6957-2

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 Commission
Marque déposée de la Commission Electrotechnique Internationale
---------------------- Page: 3 ----------------------
– 2 – IEC 60879:2019 © IEC 2019
CONTENTS

FOREWORD ........................................................................................................................... 3

1 Scope .............................................................................................................................. 5

2 Normative references ...................................................................................................... 5

3 Terms and definitions ...................................................................................................... 5

4 Information provision ....................................................................................................... 7

5 Tests ............................................................................................................................... 7

5.1 General conditions for testing ................................................................................. 7

5.1.1 Atmospheric conditions .................................................................................... 7

5.1.2 Conditioning of test equipment ........................................................................ 7

5.1.3 Voltage and frequency ..................................................................................... 7

5.1.4 Running-in of the fan ....................................................................................... 8

5.1.5 Operation of the fan ......................................................................................... 8

5.1.6 Conditioning prior to each test ......................................................................... 8

5.2 Testing of air performance ...................................................................................... 8

5.2.1 Ceiling fans ..................................................................................................... 8

5.2.2 Comfort fans other than ceiling fans ................................................................ 9

5.3 Measurement of regulator performance ................................................................. 12

5.3.1 Measurement of the regulation ratio for comfort fans other than

bladeless fans ............................................................................................... 12

5.3.2 Measurement of the regulation ratio for bladeless fans .................................. 12

5.4 Measurement of fan power input ........................................................................... 12

5.5 Measurement of sound power level ....................................................................... 12

5.6 Measurement of standby power ............................................................................ 13

Annex A (informative) Positioning of 4 anemometers in horizontal and vertical

directions .............................................................................................................................. 16

Annex B (informative) Dimensions, measuring ranges and accuracies of some vane

anemometers ........................................................................................................................ 17

Annex C (normative) Setting air flow direction for tower fans ............................................... 18

Bibliography .......................................................................................................................... 19

Figure 1 – Arrangement of test chamber and outer screen for ceiling fans ............................ 13

Figure 2 – Plan of test chamber and outer screen for ceiling fans ......................................... 14

Figure 3 – Measurement configuration for bladeless fans and tower fans .............................. 15

Figure A.1 – Configuration of 4 anemometers for conventional fans ...................................... 16

Figure B.1 – Typical anemometers for use when testing bladeless fans and tower fans ........ 17

Figure C.1 – Tower fan positioning ....................................................................................... 18

---------------------- Page: 4 ----------------------
IEC 60879:2019 © IEC 2019 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
COMFORT FANS AND REGULATORS
FOR HOUSEHOLD AND SIMILAR PURPOSES –
METHODS FOR MEASURING PERFORMANCE
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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indispensable for the correct application of this publication.

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patent rights. IEC shall not be held responsible for identifying any or all such patent rights.

International Standard IEC 60879 has been prepared by subcommittee 59L: Small household

appliances, of IEC technical committee 59: Performance of household and similar electrical

appliances

This second edition cancels and replaces the first edition published in 1986. This edition

constitutes a technical revision.

This edition includes the following significant technical changes with respect to the previous

edition:
a) the definitions of fans have been revised;

b) the test methods for the different types of fans have been revised to allow modern test

instrumentation to be used;
c) acoustic noise measurement and standby power measurement methods have been
introduced.
---------------------- Page: 5 ----------------------
– 4 – IEC 60879:2019 © IEC 2019
The text of this International Standard is based on the following documents:
FDIS Report on voting
59L/171/FDIS 59L/172/RVD

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.

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 document using a

colour printer.
---------------------- Page: 6 ----------------------
IEC 60879:2019 © IEC 2019 – 5 –
COMFORT FANS AND REGULATORS
FOR HOUSEHOLD AND SIMILAR PURPOSES –
METHODS FOR MEASURING PERFORMANCE
1 Scope

This International Standard specifies the performance-measuring methods of comfort fans and

regulators for household and similar purposes, including conventional fans, tower fans and

bladeless fans, their rated voltage being not more than 250 V for single-phase fans and 480 V

for other fans, and their rated power input being less than 125 W.

NOTE 1 According to the testing method, the comfort fans are classified into two groups:

– pedestal fans, table fans, wall fans, louvre fans, tower fans, bladeless fans;
– ceiling fans.

Wherever applicable, the term "fan" used in this document includes its associated regulator, if

any.
NOTE 2 This document does not apply to
– safety of electric fans for household and similar purposes (IEC 60335-2-80);
– performance of ventilating fans (IEC 60665);

– electromagnetic compatibility of fans (CISPR 14-1 and CISPR 14-2, IEC 61000-3-2, IEC 61000-3-3).

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 60704-2-7, Household and similar electrical appliances – Test code for the determination

of airborne acoustical noise – Part 2-7: Particular requirements for fans
IEC 62301, Household electrical appliances – Measurement of standby power
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.

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

NOTE When the term “voltage” is used, it implies an RMS value unless otherwise specified.

3.1
comfort fan

fan primarily designed for creating air movement around or on part of a human body for

personal cooling comfort, including fans that can perform additional functionalities such as

lighting

Note 1 to entry: A comfort fan is hereinafter also referred to by the term "fan".

3.2
conventional fan

comfort fan with a propeller having two or more blades, with free inlet and outlet of air

---------------------- Page: 7 ----------------------
– 6 – IEC 60879:2019 © IEC 2019
3.3
tower fan

comfort fan for use on the floor having a vertically elongated design of the cross-flow type,

tangential type, centrifugal type or impeller type with a free inlet and outlet of air

3.4
bladeless fan
comfort fan of any type that is not fitted with a propeller
3.5
ceiling fan

conventional fan provided with a device for suspension from the ceiling of a room so that the

blades rotate in a horizontal plane with the diameter of the blade not larger than 1 800 mm

3.6
table fan
comfort fan intended for use on a table

Note 1 to entry: Table fans have a maximum adjustable or non-adjustable height of less than 1 200 mm.

3.7
pedestal fan
comfort fan mounted on a pedestal of fixed or variable height

Note 1 to entry: Pedestal fans have a minimum adjustable height or non-adjustable height equal to or greater

than 1 200 mm.
3.8
wall bracket fan
comfort fan for mounting on the wall
3.9
ceiling bracket fan
comfort fan for mounting on the ceiling
3.10
louvre fan

comfort fan having moving louvre which provides a continuously changing multi-directional air

flow
3.11
rated fan flow rate
air flow rate assigned to the fan by the manufacturer
Note 1 to entry: The rated fan flow rate is expressed in m /min.
3.12
service value

ratio of the calculated maximum fan flow rate [m /min] to the measured fan power input [W]

Note 1 to entry: The service value is also known as the "coefficient of performance (COP)".

3.13
fan power input

power input of the fan operating at its maximum flow rate, measured with the oscillation

mechanism and the moving louvre, if any, turned off

Note 1 to entry: The power inputs for other functions, such as lighting are not included.

3.14
rated voltage
voltage assigned to the fan by the manufacturer
3.15
rated frequency
frequency assigned to the fan by the manufacturer
---------------------- Page: 8 ----------------------
IEC 60879:2019 © IEC 2019 – 7 –
3.16
maximum fan flow rate

air flow rate of the comfort fan at its maximum setting [m /min], measured at the fan outlet

with the oscillating mechanism and the moving louvre, if any, turned off
3.17
oscillating mechanism

capability of the comfort fan to automatically vary the direction of the air flow while the fan is

operating
3.18
fan sound power level

A-weighted sound power level of the comfort fan while providing the maximum fan flow rate,

measured at the outlet side
3.19
moving louvre

grill provided at the air outlet of louvre fans, which is used to control the direction of the air

flow by its rotation or position
3.20
equivalent sweep size diameter of bladeless fan
value obtained by dividing the perimeter of the bladeless fan air outlet by 3,14

Note 1 to entry: The perimeter is obtained by measuring the length of the rope that wraps along the complete

enclosure of the bladeless fan's air outlet.
4 Information provision
Manufacturers shall provide the following information in the instructions:
a) rated fan flow rate m /min (rounded to one decimal place);
b) service value (m /min)/W (rounded to one decimal place);
c) standby power consumption W (rounded to one decimal place);
d) sound power level dB(A).
5 Tests
5.1 General conditions for testing
5.1.1 Atmospheric conditions

Unless otherwise specified, the test procedures and measurements shall be carried out under

the following conditions:

– temperature: 20 °C ± 5°C, in case of doubt the temperature shall be 23 °C ± 2°C;

– relative humidity: 50 % ± 30 %;
– air pressure: 86 kPa to 106 kPa.

NOTE Temperature and humidity conditions within the specified ranges are required for good repeatability and

reproducibility.

Care should be taken to avoid changes in temperature and relative humidity during the test.

5.1.2 Conditioning of test equipment

Measuring equipment to be used for the tests shall be stored for at least 16 h at the

atmospheric conditions specified in 5.1.1 prior to the test.
5.1.3 Voltage and frequency

The tests shall be conducted at the rated voltage. Fans designed for DC only shall be

operated at DC. Fans designed for both AC and DC shall be operated at AC. Fans not marked

with rated frequency shall be operated at either 50 Hz ± 1 Hz or 60 Hz ± 1 Hz as is common in

the country of use and with a total harmonic distortion ≤ 5 %.
---------------------- Page: 9 ----------------------
– 8 – IEC 60879:2019 © IEC 2019

Unless otherwise specified, the tests are carried out at a specific test voltage within a voltage

range (for example 100 V to 240 V) or at the rated voltage or rated voltages (for example

120 V or 120 V and 240 V).
The stability of the voltage shall be ± 1 %.
5.1.4 Running-in of the fan

Prior to starting the tests on a new fan, it shall run at its maximum airflow setting with

unrestricted air flow and with the oscillating mechanisms and moving louvres, if any, in

operation for at least 1 hour to ensure adequate running-in. Any other functions such as

luminaires, purifiers, humidifiers, heaters, if any, shall be connected.
5.1.5 Operation of the fan

Before starting the tests, the fan and its attachments are adjusted in accordance with the

manufacturer's instructions for normal operation. Any controls shall be set for maximum

continuous air flow unless the manufacturer's instruction states otherwise. Any other functions

such as luminaires, purifiers, humidifiers, heaters, if any, shall be turned off.

5.1.6 Conditioning prior to each test

Prior to starting each test, the fan shall be conditioned for 30 min under the provisions given

in 5.1.4 but with oscillating mechanisms and moving louvres, if any, not in operation.

5.2 Testing of air performance
5.2.1 Ceiling fans
5.2.1.1 Test chamber

The fan shall be tested in a test chamber having the following dimensions: length 4 500 mm,

width 4 500 mm, height 3 000 mm (see Figure 1 and Figure 2).
The above dimensions shall have a tolerance of ± 15 mm.

The top of the test chamber shall be covered by the clapboard, except for a centrally situated

circular opening (top-opening), the diameter (D) of the top opening shall be between

1,1 and 1,2 times the blade's sweep. The top clapboard in which the top opening is located

shall be not more than 6 mm thick. The bottom of the test chamber is 450 mm from the ground,

to leave a suitable space for air outlet.

Readings shall be taken from a position between the chamber and the outer screen, and a

small shelf for electrical instruments may be provided in this space. Except for these, the

space between the test chamber and the outer screen and the space inside the test chamber

shall be clear of all obstructions, and any conditioning apparatus (including heating or cooling)

shall have no influence on the movement of air in the test room while the test is in progress.

The room in which the test chamber and the outer screen are erected shall be suitably

protected against extraneous draughts.

Any ceiling external to the test chamber or any projecting beam which might interfere with the

air flow shall be not less than 1 000 mm above the top opening, i.e. not less than 4 000 mm

from the ground level at this point.
The distances between the walls of the chamber and the walls of the outer screen
shall be 1 000 mm to 1 250 mm.

The fan shall be placed at such a height that the plane of the fan blades is 3 000 mm ± 10 mm

from the ground level and lies in the plane of the top edge of the clapboard containing the top

opening in the roof of the test chamber.
5.2.1.2 Measuring instrument

The air movement shall be measured by means of vane anemometers having an internal

diameter not exceeding 100 mm.
---------------------- Page: 10 ----------------------
IEC 60879:2019 © IEC 2019 – 9 –
5.2.1.3 Arrangement of apparatus

The plane of the fan blades lies in the plane of the top edge of the clapboard containing the

top opening in the roof of the test chamber.

A flat plate is installed above the ceiling fan, the size of which shall be between 1,1 and 1,2

times the blade diameter. The distance between the plate and the plane of the fan blades is

determined by the distance between the plane of the fan blades and the ceiling after the

ceiling fan has been installed in accordance with the instructions for use.

The plane of the anemometer's vane is parallel to the plane of the fan blades. The

anemometers shall be moved in either direction along both diagonals of the test chamber in a

test plane 1 500 mm ± 10 mm below the plane of the fan blades. The anemometers shall be

supported in such a manner as to cause as little obstruction as possible to the air flow.

5.2.1.4 Procedure for test

The measurements shall be carried out with the fan running at full speed at the test voltage.

Air velocity measurements in each of four directions shall commence at a point 40 mm from

the axis of the fan blades and shall progress horizontally to the fan blade axis in increments of

80 mm along the semi-diagonals of the test chamber (3 to A, 3 to B, 3 to AA and 3 to BB in

Figure 2). The measurements shall be continued in the 80-mm increments until the air velocity

in each of the four directions falls below 9 m/min.

The air velocity shall be averaged over a period of 60 s using an update rate of not less

than 2 Hz.

The average air velocity through each annulus is taken as the mean of the 8 air velocities

obtained at each anemometer position on the inner and outer radii of the annulus. The mean

radius of each annulus is equal to the mean of the inner and outer radii of the annulus.

Average air velocities below 9 m/min are discarded.
5.2.1.5 Calculation of flow rate

For each annulus having an average air velocity equal to or greater than 9 m/min, the product

of the area of the annulus and the average air velocity through that annulus, shall be taken as

the air delivery through that annulus.

The sum of the air deliveries through all such annuli shall be taken as the measured flow rate

of the fan for the purposes of this document.
No correction is made for relative humidity or air pressure.
5.2.2 Comfort fans other than ceiling fans
5.2.2.1 Test chamber

The fan shall be tested in a test chamber having the following dimensions: length: 4 500 mm

for the sweep size or the equivalent sweep size (for bladeless fans) not larger than 400 mm,

and 6 000 mm for the sweep size or the equivalent sweep size (for bladeless fans) larger than

400 mm, width: 4 500 mm, height: 3 000 mm. The chamber shall be suitably protected from

extraneous draughts.

The test chamber shall be free from obstructions other than the stand on which the fan is kept.

Any table or shelf for electrical instruments shall be on the opposite side of the fan to the test

plane, beyond a distance of 900 mm from the plane of fan blades for the fans other than tower

fans and bladeless fans, or the plane of the air outlet for tower fans and bladeless fans.

NOTE For tower fans, the plane of the air outlet refers to the longitudinal cross-sectional plane, vertical to the

central line. For bladeless fans, the plane of the air outlet refers to the outlet plane closer to the anemometers.

Any air conditioning apparatus used in the test room shall have no influence on the movement

of the air in the test chamber while the test is in progress.
5.2.2.2 Arrangement of apparatus
The fan shall be located in the test chamber and arranged as follows:
---------------------- Page: 11 ----------------------
– 10 – IEC 60879:2019 © IEC 2019

The distance from the geometrical centre of the fan blades or the air outlet to the floor shall

be at least:

– 1 200 mm for the sweep size or the equivalent sweep size (for bladeless fans) not larger

...

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