IEC 60335-2-31:2024
(Main)Household and similar electrical appliances - Safety - Part 2-31: Particular requirements for range hoods and other cooking fume extractors
Household and similar electrical appliances - Safety - Part 2-31: Particular requirements for range hoods and other cooking fume extractors
IEC 60335-2-31:2024 deals with the safety of electric range hoods and other cooking fume extractors intended for installing above, beside, behind or under household cooking ranges, hobs and similar cooking appliances, their rated voltage being not more than 250 V including direct current (DC) supplied appliances. The cooking appliance can be supplied by electricity or other fuels, such as gas. Appliances not intended for normal household use but that nevertheless can be a source of danger to the public, such as appliances intended to be used by laymen in shops, in light industry and on farms, are within the scope of this standard. As far as is practicable, this standard deals with the common hazards presented by appliances that are encountered by all persons in and around the home. However, in general, it does not take into account
- persons (including children) whose physical, sensory or mental capabilities; or lack of experience and knowledge prevents them from using the appliance safely without supervision or instruction;
- children playing with the appliance.
Attention is drawn to the fact that
- for appliances incorporating electrostatic air filters, IEC 60335-2-65 also applies;
- for appliances intended to be used in vehicles or on board ships or aircraft, additional requirements can be necessary;
- in many countries additional requirements are specified by the national health authorities, the national authorities responsible for the protection of labour, the national authorities responsible for buildings and similar authorities.
This standard does not apply to
- appliances intended for commercial purposes (IEC 60335-2-99);
- appliances intended to be used in locations where special conditions prevail, such as the presence of a corrosive or explosive atmosphere (dust, vapour or gas).
This sixth edition cancels and replaces the fifth edition published in 2012, Amendment 1:2016 and Amendment 2:2018. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous edition:
a) alignment with IEC 60335-1:2020;
b) conversion of some notes to normative text (Clause 1, 22.8, 22.101, 22.102);
c) update of the installation requirements for the heating test to include down-draft systems (11.2);
d) addition of accessible surface temperature limits (11.3, 11.8);
e) introduction of IEC TR 62854 to determine compliance in case of doubt (22.14);
f) clarification of remote operation requirements for range hoods and other cooking fume extraction appliances (22.40, 22.49, 22.51);
g) clarification of 30.101 with respect to grease filters and odour extraction filters.
This part 2 is to be used in conjunction with the latest edition of IEC 60335-1 and its amendments. unless that edition precludes it; in that case, the latest edition that does not preclude it is used. It was established on the basis of the sixth edition (2020) of that standard.
Appareils électrodomestiques et analogues - Sécurité - Partie 2-31: Exigences particulières pour les hottes de cuisine et autres extracteurs de fumées de cuisson
L'IEC 60335-2-31:2024 traite de la sécurité des hottes de cuisine électriques et autres extracteurs électriques de fumées de cuisson destinés à être installés au-dessus, à côté, derrière ou sous des cuisinières, tables de cuisson ou appareils de cuisson analogues, dont la tension assignée est inférieure ou égale à 250 V, y compris les appareils alimentés en courant continu. Les appareils de cuisson peuvent être alimentés à l'électricité ou avec d'autres combustibles, tels que le gaz. Les appareils non destinés à un usage domestique normal, mais qui peuvent néanmoins constituer une source de danger pour le public, tels que les appareils destinés à être utilisés par des utilisateurs non avertis dans des magasins, chez des artisans et dans des fermes, sont compris dans le domaine d'application de la présente norme. Dans la mesure du possible, la présente norme traite des dangers courants que présentent les appareils et auxquels sont exposés tous les individus situés à l'intérieur et autour de l'habitation. Cependant, elle ne tient en général pas compte:
- des personnes (y compris des enfants) dont les capacités physiques, sensorielles ou mentales; ou le manque d'expérience et de connaissance les empêchent d'utiliser l'appareil en toute sécurité sans surveillance ou instruction;
- des enfants qui jouent avec l'appareil.
L'attention est attirée sur le fait que
- pour les appareils qui comportent des filtres à air électrostatiques, l'IEC 60335-2-65 s'applique également;
- pour les appareils destinés à être utilisés dans des véhicules ou à bord de navires ou d'avions, des exigences supplémentaires peuvent être nécessaires;
- dans de nombreux pays, des exigences supplémentaires sont spécifiées par les organismes nationaux de la santé, par les organismes nationaux responsables de la protection des travailleurs, par les organismes nationaux responsables du bâtiment et par des organismes similaires.
La présente norme ne s'applique pas:
- aux appareils destinés à des usages commerciaux (IEC 60335-2-99);
- aux appareils destinés à être utilisés dans des locaux qui présentent des conditions particulières, telles que la présence d'une atmosphère corrosive ou explosive (poussière, vapeur ou gaz).
Cette sixième édition annule et remplace la cinquième édition parue en 2012, l'Amendement 1:2016 et l'Amendement 2:2018. Cette édition constitue une révision technique.
Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente:
a) le texte a été aligné sur l'IEC 60335-1:2020;
b) certaines notes ont été converties en texte normatif (Article 1, 22.8, 22.101, 22.102);
c) les exigences d’installation pour l’essai de chauffage ont été mises à jour afin d’inclure les systèmes d'extraction à flux descendant (11.2) ;
d) des limites de température ont été ajoutées pour les surfaces accessibles (11.3, 11.8);
e) une référence à l'IEC TR 62854 a été ajoutée afin de déterminer la conformité en cas de doute (22.14) ;
f) les exigences de fonctionnement à distance des hottes de cuisine et autres appareils d’extraction des fumées de cuisson ont été clarifées (22.40, 22.49, 22.51) ;
g) la vérification des filtres à graisse et des filtres pour l’extraction des odeurs a été clarifiée (30.101).
La présente partie 2 doit être utilisée conjointement avec la dernière édition de l'IEC 60335-1 et ses amendements sauf si cette édition l'exclut. Dans ce cas, la dernière édition qui n'exclut pas la présente partie 2 est utilisée. Elle a été établie sur la base de la sixième édition (2020) de cette norme.
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IEC 60335-2-31 ®
Edition 6.0 2024-02
COMMENTED VERSION
INTERNATIONAL
STANDARD
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Household and similar electrical appliances – Safety –
Part 2-31: Particular requirements for range hoods and other cooking fume
extractors
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IEC 60335-2-31 ®
Edition 6.0 2024-02
COMMENTED VERSION
INTERNATIONAL
STANDARD
colour
inside
Household and similar electrical appliances – Safety –
Part 2-31: Particular requirements for range hoods and other cooking fume
extractors
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 13.120, 97.040.20 ISBN 978-2-8322-8324-0
– 2 – IEC 60335-2-31:2024 CMV © IEC 2024
CONTENTS
FOREWORD .4
INTRODUCTION .7
1 Scope .8
2 Normative references .9
3 Terms and definitions .9
4 General requirement .9
5 General conditions for the tests .9
6 Classification . 10
7 Marking and instructions . 10
8 Protection against access to live parts . 12
9 Starting of motor-operated appliances . 13
10 Power input and current . 13
11 Heating . 13
12 Void Charging of metal-ion batteries . 15
13 Leakage current and electric strength at operating temperature . 15
14 Transient overvoltages . 15
15 Moisture resistance . 15
16 Leakage current and electric strength . 16
17 Overload protection of transformers and associated circuits . 16
18 Endurance . 16
19 Abnormal operation . 16
20 Stability and mechanical hazards . 16
21 Mechanical strength . 17
22 Construction . 17
23 Internal wiring . 19
24 Components . 19
25 Supply connection and external flexible cords . 19
26 Terminals for external conductors . 19
27 Provision for earthing . 19
28 Screws and connections . 19
29 Clearances, creepage distances and solid insulation . 20
30 Resistance to heat and fire . 20
31 Resistance to rusting. 20
32 Radiation, toxicity and similar hazards . 21
Annexes . 24
Bibliography . 25
List of comments . 26
Figure 101 – "Replace any cracked protective shield" pictogram . 21
Figure 101 102 – Hob layout for the heating test . 22
Figure 103 – Probe for measuring surface temperatures . 23
Table 101 – Maximum temperature rises for specified external accessible surfaces
under normal operating conditions . 15
– 4 – IEC 60335-2-31:2024 CMV © IEC 2024
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
HOUSEHOLD AND SIMILAR ELECTRICAL APPLIANCES –
SAFETY –
Part 2-31: Particular requirements for range hoods
and other cooking fume extractors
FOREWORD
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This commented version (CMV) of the official standard IEC 60335-2-31:2024 edition 6.0
allows the user to identify the changes made to the previous IEC 60335-2-
31:2012+AMD1:2016+AMD2:2018 CSV edition 5.2. Furthermore, comments from
IEC TC 61 experts are provided to explain the reasons of the most relevant changes, or
to clarify any part of the content.
A vertical bar appears in the margin wherever a change has been made. Additions are in
green text, deletions are in strikethrough red text. Experts' comments are identified by a
blue-background number. Mouse over a number to display a pop-up note with the
comment.
This publication contains the CMV and the official standard. The full list of comments is
available at the end of the CMV.
IEC 60335-2-31 has been prepared by IEC technical committee 61: Safety of household and
similar electrical appliances. It is an International Standard.
This sixth edition cancels and replaces the fifth edition published in 2012, Amendment 1:2016
and Amendment 2:2018. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
a) alignment with IEC 60335-1:2020;
b) conversion of some notes to normative text (Clause 1, 22.8, 22.101, 22.102);
c) update of the installation requirements for the heating test to include down-draft systems
(11.2);
d) addition of accessible surface temperature limits (11.3, 11.8);
e) introduction of IEC TR 62854 to determine compliance in case of doubt (22.14);
f) clarification of remote operation requirements for range hoods and other cooking fume
extraction appliances (22.40, 22.49, 22.51);
g) clarification of 30.101 with respect to grease filters and odour extraction filters.
The text of this International Standard is based on the following documents:
Draft Report on voting
61/7090/FDIS 61/7105/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 Dire
...
IEC 60335-2-31 ®
Edition 6.0 2024-02
EXTENDED VERSION
INTERNATIONAL
STANDARD
colour
inside
This extended version of IEC 60335-2-31:2024 includes the content of the references made to
IEC 60335-1:2020
Household and similar electrical appliances – Safety –
Part 2-31: Particular requirements for range hoods and other cooking fume
extractors
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form
or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from
either IEC or IEC's member National Committee in the country of the requester. If you have any questions about IEC
copyright or have an enquiry about obtaining additional rights to this publication, please contact the address below or
your local IEC member National Committee for further information.
IEC Secretariat Tel.: +41 22 919 02 11
3, rue de Varembé info@iec.ch
CH-1211 Geneva 20 www.iec.ch
Switzerland
About the IEC
The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes
International Standards for all electrical, electronic and related technologies.
About IEC publications
The technical content of IEC publications is kept under constant review by the IEC. Please make sure that you have the
latest edition, a corrigendum or an amendment might have been published.
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IEC 60335-2-31 ®
Edition 6.0 2024-02
EXTENDED VERSION
INTERNATIONAL
STANDARD
colour
inside
This extended version of IEC 60335-2-31:2024 includes the content of the references made to
IEC 60335-1:2020
Household and similar electrical appliances – Safety –
Part 2-31: Particular requirements for range hoods and other cooking fume
extractors
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 13.120, 97.040.20 ISBN 978-2-8322-8325-7
IEC 60335-1:2020/ISH1:2021 – 1 –
© IEC 2021
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
IEC 60335-1
Edition 6.0 2020-09
HOUSEHOLD AND SIMILAR ELECTRICAL APPLIANCES – SAFETY –
Part 1: General requirements
INTERPRETATION SHEET 1
This interpretation sheet has been prepared by IEC technical committee 61: Safety of
household and similar electrical appliances.
The text of this Interpretation Sheet is based on the following documents:
Draft Report on voting
61/5999/DISH 61/6009/RVDISH
Full information on the voting for its approval can be found in the report on voting indicated in
the above table.
___________
INTRODUCTION
Edition 6 of IEC 60335-1:2020 defines and introduces requirements for a detachable
power supply part of an appliance. In the document, 24.2 prohibits the use of a power
supply in a flexible cord.
QUESTION:
Does Subclause 24.2 prohibit the use of a detachable power supply part?
ANSWER
No, a "detachable power supply part" is a defined term and is not captured by the term
"power supply" as used in Subclause 24.2.
NOTE A detachable power supply part is captured by the defined term when the output of the power supply
part is detachable from the class III construction part of the appliance at:
– the power supply part, or
– the class III construction part of the appliance.
However, the supply cord (if any) does not have to be detachable from the detachable power supply part.
ICS 13.120; 97.030
IEC 60335-1:2020-09/ISH1:2021-11(en)
– 2 – IEC 60335-2-31:2024 EXV © IEC 2024
CONTENTS
FOREWORD . 6
INTRODUCTION . 9
1 Scope . 10
2 Normative references . 10
3 Terms and definitions . 15
4 General requirement . 27
5 General conditions for the tests . 27
6 Classification . 31
7 Marking and instructions . 32
8 Protection against access to live parts . 42
9 Starting of motor-operated appliances . 44
10 Power input and current . 45
11 Heating . 47
12 Charging of metal-ion batteries . 53
13 Leakage current and electric strength at operating temperature . 54
14 Transient overvoltages . 57
15 Moisture resistance . 58
16 Leakage current and electric strength . 61
17 Overload protection of transformers and associated circuits . 63
18 Endurance . 63
19 Abnormal operation . 63
20 Stability and mechanical hazards . 74
21 Mechanical strength . 76
22 Construction . 77
23 Internal wiring . 91
24 Components . 93
25 Supply connection and external flexible cords . 98
26 Terminals for external conductors . 106
27 Provision for earthing . 108
28 Screws and connections . 110
29 Clearances, creepage distances and solid insulation . 112
30 Resistance to heat and fire . 121
31 Resistance to rusting . 125
32 Radiation, toxicity and similar hazards . 126
Annex A (informative) Routine tests . 142
Annex B (normative) Battery-operated appliances, separable batteries and detachable
batteries for battery-operated appliances . 144
Annex C (normative) Ageing test on motors . 165
Annex D (normative) Thermal motor protectors . 166
Annex E (normative) Needle-flame test . 167
Annex F (normative) Capacitors . 168
Annex G (normative) Safety isolating transformers . 170
Annex H (normative) Switches . 171
Annex I (normative) Motors having basic insulation that is inadequate for the rated
voltage of the appliance . 173
Annex J (normative) Coated printed circuit boards . 175
Annex K (informative) Overvoltage categories . 176
Annex L (informative) Guidance for the measurement of clearances and creepage
distances . 177
Annex M (informative) Pollution degree . 180
Annex N (normative) Proof tracking test . 181
Annex O (informative) Selection and sequence of the tests of Clause 30 . 182
Annex P (informative) Guidance for the application of this standard to appliances
used in tropical climates . 187
Annex Q (informative) Sequence of tests for the evaluation of electronic circuits . 189
Annex R (normative) Software evaluation . 192
Annex S (informative) Guidance for the application of this standard on measurement
of power input and current based on the requirements of 10.1 and 10.2 concerning the
representative period . 206
Annex T (normative) UV-C radiation effect on non-metallic materials . 207
Annex U (normative) Appliances intended for remote communication through public
networks . 210
Bibliography . 214
Index of defined terms . 217
Figure 1 – Circuit diagram for leakage current measurement at operating temperature
for single-phase connection of class II appliances and for parts of class ll construction . 127
Figure 2 – Circuit diagram for leakage current measurement at operating temperature
for single-phase connection of other than class II appliances or parts of class ll
construction . 128
Figure 3 – Circuit diagram for leakage current measurement at operating temperature
for three-phase with neutral class II appliances and for parts of class ll construction . 129
Figure 4 – Circuit diagram for leakage current measurement at operating temperature
for three-phase with neutral appliances other than those of class II or parts of class ll
construction . 130
Figure 5 – Small part . 131
Figure 6 – Example of an electronic circuit with low-power points . 131
Figure 7 – Test finger nail . 132
Figure 8 – Flexing test apparatus . 133
Figure 9 – Constructions of cord anchorages . 134
Figure 10 – An example of parts of an earthing terminal . 135
Figure 11 – Examples of clearances . 136
Figure 12 – Example of the pl
...
IEC 60335-2-31 ®
Edition 6.0 2024-02
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Household and similar electrical appliances – Safety –
Part 2-31: Particular requirements for range hoods and other cooking fume
extractors
Appareils électrodomestiques et analogues – Sécurité –
Partie 2-31: Exigences particulières pour les hottes de cuisine et autres
extracteurs de fumées de cuisson
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International Standards for all electrical, electronic and related technologies.
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IEC 60335-2-31 ®
Edition 6.0 2024-02
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Household and similar electrical appliances – Safety –
Part 2-31: Particular requirements for range hoods and other cooking fume
extractors
Appareils électrodomestiques et analogues – Sécurité –
Partie 2-31: Exigences particulières pour les hottes de cuisine et autres
extracteurs de fumées de cuisson
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 13.120, 97.040.20 ISBN 978-2-8322-8243-4
– 2 – IEC 60335-2-31:2024 © IEC 2024
CONTENTS
FOREWORD . 4
INTRODUCTION . 7
1 Scope . 8
2 Normative references . 9
3 Terms and definitions . 9
4 General requirement . 9
5 General conditions for the tests . 9
6 Classification . 10
7 Marking and instructions . 10
8 Protection against access to live parts . 12
9 Starting of motor-operated appliances . 13
10 Power input and current . 13
11 Heating . 13
12 Charging of metal-ion batteries . 15
13 Leakage current and electric strength at operating temperature . 15
14 Transient overvoltages . 15
15 Moisture resistance . 15
16 Leakage current and electric strength . 16
17 Overload protection of transformers and associated circuits . 16
18 Endurance . 16
19 Abnormal operation . 16
20 Stability and mechanical hazards . 16
21 Mechanical strength . 17
22 Construction . 17
23 Internal wiring . 19
24 Components . 19
25 Supply connection and external flexible cords . 19
26 Terminals for external conductors . 19
27 Provision for earthing . 19
28 Screws and connections . 19
29 Clearances, creepage distances and solid insulation . 19
30 Resistance to heat and fire . 19
31 Resistance to rusting . 20
32 Radiation, toxicity and similar hazards . 20
Annexes . 23
Bibliography . 24
Figure 101 – "Replace any cracked protective shield" pictogram . 20
Figure 102 – Hob layout for the heating test . 21
Figure 103 – Probe for measuring surface temperatures . 22
Table 101 – Maximum temperature rises for specified external accessible surfaces
under normal operating conditions . 15
– 4 – IEC 60335-2-31:2024 © IEC 2024
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
HOUSEHOLD AND SIMILAR ELECTRICAL APPLIANCES –
SAFETY –
Part 2-31: Particular requirements for range hoods
and other cooking fume extractors
FOREWORD
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