IEC 60335-2-25:2024
(Main)Household and similar electrical appliances - Safety - Part 2-25: Particular requirements for microwave ovens, including combination microwave ovens
Household and similar electrical appliances - Safety - Part 2-25: Particular requirements for microwave ovens, including combination microwave ovens
IEC 60335-2-25:2024 deals with the safety of microwave ovens for household and similar use, their rated voltage being not more than 250 V including direct current (DC) supplied appliances and battery-operated appliances. This standard also deals with combination microwave ovens, for which normative Annex AA is applicable. This standard also deals with microwave ovens intended to be used on board ships, for which normative Annex BB is applicable. Appliances not intended for normal household use but which 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. However, if the appliance is intended to be used professionally to process food for commercial purposes, the appliance is not considered to be for household and similar use only.
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 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 and similar authorities.
This standard does not apply to
- commercial microwave ovens (IEC 60335-2-90);
- commercial microwave appliances with insertion or contacting applicators (IEC 60335 2 110);
- industrial microwave heating equipment (IEC 60519-6);
- appliances for medical purposes (IEC 60601);
- 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 eighth edition cancels and replaces the seventh edition published in 2020. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous edition:
a) some subclauses have been modified for the appliance outlets and socket-outlets;
b) Subclause 7.12 has been improved in clarity;
c) Subclauses 8.1.1 and 20.2 have been modified to adopt test probe 19;
d) Subclauses 10.1 and 10.2 have been improved in clarity for inverter type microwave ovens;
e) maximum temperature rises of external accessible surfaces have been added in Subclause 11.8;
f) test criterion has been modified in Subclause 15.101;
g) Subclause 15.102 has been modified for harmonization with IEC 60335-2-6;
h) Subclauses 8.1.3, 15.103, 19.11.2, 19.13, 22.105, 22.106, 22.111 and Figure 101 have been improved in clarity;
i) Subclauses 22.103.2, 22.105 and 22.120 have been modified to adopt test probe 18;
j) Subclause 16.101 has been modified to move the content of 16.101.1, 16.101.2 directly under 16.101;
k) Subclause 22.119 has been modified to move the content of 22.119.1, 22.119.2 and 22.119.3 directly under 22.119.
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 2-25: Exigences particulières pour les fours à micro-ondes, y compris les fours à micro-ondes combinés
L'IEC 60335-2-25:2024 traite de la sécurité des fours à micro-ondes à usage domestique et analogue dont la tension assignée est inférieure ou égale à 250 V, y compris les appareils alimentés en courant continu (CC) et les appareils alimentés par batteries. La présente norme traite également des fours à micro-ondes combinés, pour lesquels l'Annexe AA normative s'applique. La présente norme traite également des fours à micro-ondes destinés à être utilisés à bord de navires, pour lesquels l'Annexe BB normative s'applique. 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. Toutefois, si l'appareil est destiné à être utilisé par des professionnels pour la préparation d'aliments à des fins commerciales, cet appareil n'est pas considéré comme étant destiné uniquement à un usage domestique et analogue.
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 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 et par des organismes similaires.
La présente norme ne s'applique pas
- aux fours à micro-ondes à usage commercial (IEC 60335-2-90);
- aux appareils à micro-ondes commerciaux avec applicateurs à insertion ou à contact (IEC 6033-2-110);
- aux installations de chauffage industriel à hyperfréquences (IEC 60519-6);
- aux appareils destinés à des usages médicaux (IEC 60601);
- 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 huitième édition annule et remplace la septième édition parue en 2020. Cette édition constitue une révision technique.
Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente:
a) certains paragraphes ont été modifiés pour les socles femelles de connecteurs et les socles de prises de courant;
b) le 7.12 a été amélioré pour plus de clarté;
c) les 8.1.1 et 20.2 ont été modifiés afin d'utiliser le calibre d'essai 19;
d) les 10.1 et 10.2 ont été améliorés pour les fours à micro-ondes de type onduleur;
e) des valeurs d'échauffement maximales ont été ajoutées pour les surfaces accessibles extérieures en 11.8;
f) le critère d'essai a été modifié en 15.101;
g) le 15.102 a été modifié à des fins d'harmonisation avec l'IEC 60335-2-6;
h) les 8.1.3, 15.103, 19.11.2, 19.13, 22.105, 22.106, 22.111 et la Figure 101 ont été améliorés pour plus de clarté;
i) les 22.103.2, 22.105 et 22.120 ont été modifiés afin d'utiliser le calibre d'essai 18;
j) le 16.101 a été modifié de manière à déplacer le contenu du 16.101.1 et du 16.101.2 directement sous le 16.101;
k) le 22.119 a été modifié de manière à déplacer le contenu du 22.119.1, du 22.119.2 et du 22.119.3 directement sous le 22.119.
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
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IEC 60335-2-25 ®
Edition 8.0 2024-07
REDLINE VERSION
INTERNATIONAL
STANDARD
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Household and similar electrical appliances – Safety –
Part 2-25: Particular requirements for microwave ovens, including combination
microwave ovens
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IEC 60335-2-25 ®
Edition 8.0 2024-07
REDLINE VERSION
INTERNATIONAL
STANDARD
colour
inside
Household and similar electrical appliances – Safety –
Part 2-25: Particular requirements for microwave ovens, including combination
microwave ovens
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 13.120; 97.040.20 ISBN 978-2-8322-9404-8
– 2 – IEC 60335-2-25:2024 RLV © IEC 2024
CONTENTS
FOREWORD . 4
INTRODUCTION . 2
1 Scope . 8
2 Normative references . 9
3 Terms and definitions . 9
4 General requirement . 10
5 General conditions for the tests . 10
6 Classification . 11
7 Marking and instructions . 11
8 Protection against access to live parts . 13
9 Starting of motor-operated appliances . 13
10 Power input and current . 14
11 Heating . 14
12 Void Charging of metal-ion batteries . 16
13 Leakage current and electric strength at operating temperature . 16
14 Transient overvoltages . 16
15 Moisture resistance . 17
16 Leakage current and electric strength . 19
17 Overload protection of transformers and associated circuits . 19
18 Endurance . 20
19 Abnormal operation . 20
20 Stability and mechanical hazards . 22
21 Mechanical strength . 23
22 Construction . 24
23 Internal wiring . 31
24 Components . 31
25 Supply connection and external flexible cords . 31
26 Terminals for external conductors . 32
27 Provision for earthing . 32
28 Screws and connections . 32
29 Clearances, creepage distances and solid insulation . 32
30 Resistance to heat and fire . 32
31 Resistance to rusting . 32
32 Radiation, toxicity and similar hazards . 32
Annexes . 38
Annex A (informative) Routine tests . 39
Annex B (normative) Battery-operated appliances, separable batteries and detachable
batteries for battery-operated appliances . 41
Annex R (normative) Software evaluation . 42
Annex AA (normative) Combination microwave ovens . 43
Annex BB (normative) Microwave ovens intended to be used on board ships . 46
Bibliography . 48
Figure 101 – Test rod for door interlock concealment . 34
Figure 102 – Test cabinet including working surface, position of funnel and example for
direction of tilt .
Figure 102 – Void . 34
Figure 103 – Test cabinet including separation board, position of funnel and example
for direction of tilt . 35
Figure 104 – Probe for measuring surface temperatures . 35
Figure 105 – Front view of appliance with identification of excluded areas . 36
Figure 106 – Arrangement of work surface for spillage test on built-in microwave oven . 36
Figure 107 – Detail of bottle cap and position of hole . 37
Figure 108 – Spillage solution bottle . 37
Figure 109 – Bottle position for the spillage test . 37
Table 101 – Maximum temperature rises of external accessible surfaces under normal
operating conditions . 16
– 4 – IEC 60335-2-25:2024 RLV © IEC 2024
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
HOUSEHOLD AND SIMILAR ELECTRICAL APPLIANCES –
SAFETY –
Part 2-25: Particular requirements for microwave ovens,
including combination microwave ovens
FOREWORD
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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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9) IEC draws attention to the possibility that the implementation of this document may involve the use of (a)
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shall not be held responsible for identifying any or all such patent rights.
This redline version of the official IEC Standard allows the user to identify the changes
made to the previous edition IEC 60335-2-25:2020. A vertical bar appears in the margin
wherever a change has been made. Additions are in green text, deletions are in
strikethrough red text.
IEC 60335-2-25 has been prepared by subcommittee 61B: Safety of microwave appliances for
household and commercial use, of IEC technical committee 61: Safety of household and similar
electrical
...
IEC 60335-2-25 ®
Edition 8.0 2024-07
EXTENDED VERSION
INTERNATIONAL
STANDARD
colour
inside
This extended version of IEC 60335-2-25:2024 includes the content of the references made to
IEC 60335-1:2020
Household and similar electrical appliances – Safety –
Part 2-25: Particular requirements for microwave ovens, including combination
microwave ovens
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
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copyright or have an enquiry about obtaining additional rights to this publication, please contact the address below or
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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 60335-2-25 ®
Edition 8.0 2024-07
EXTENDED VERSION
INTERNATIONAL
STANDARD
colour
inside
This extended version of IEC 60335-2-25:2024 includes the content of the references made to
IEC 60335-1:2020
Household and similar electrical appliances – Safety –
Part 2-25: Particular requirements for microwave ovens, including combination
microwave ovens
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 13.120; 97.040.20 ISBN 978-2-8322-9405-5
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 60335-2-25:2024 EXV © IEC 2024
CONTENTS
FOREWORD . 6
INTRODUCTION to IEC 60335-1:2020 . 9
INTRODUCTION to IEC 60335-2-25:2024 . 11
1 Scope . 12
2 Normative references . 13
3 Terms and definitions . 18
4 General requirement . 30
5 General conditions for the tests . 30
6 Classification . 34
7 Marking and instructions . 35
8 Protection against access to live parts . 45
9 Starting of motor-operated appliances . 47
10 Power input and current . 47
11 Heating . 49
12 Charging of metal-ion batteries . 56
13 Leakage current and electric strength at operating temperature . 58
14 Transient overvoltages . 60
15 Moisture resistance . 61
16 Leakage current and electric strength . 65
17 Overload protection of transformers and associated circuits . 68
18 Endurance . 68
19 Abnormal operation . 69
20 Stability and mechanical hazards . 80
21 Mechanical strength . 82
22 Construction . 85
23 Internal wiring . 103
24 Components . 105
25 Supply connection and external flexible cords . 110
26 Terminals for external conductors . 119
27 Provision for earthing . 121
28 Screws and connections . 123
29 Clearances, creepage distances and solid insulation . 125
30 Resistance to heat and fire . 134
31 Resistance to rusting . 139
32 Radiation, toxicity and similar hazards . 139
Annex A (informative) Routine tests . 156
Annex B (normative) Battery-operated appliances, separable batteries and detachable
batteries for battery-operated appliances . 159
Annex C (normative) Ageing test on motors . 180
Annex D (normative) Thermal motor protectors . 181
Annex E (normative) Needle-flame test . 182
Annex G (normative) Safety isolating transformers . 185
Annex I (normative) Motors having basic insulation that is inadequate for the rated
voltage of the appliance . 188
Annex J (normative) Coated printed circuit boards . 190
Annex K (informative) Overvoltage categories . 191
Annex L (informative) Guidance for the measurement of clearances and creepage
distances . 192
Annex M (informative) Pollution degree . 195
Annex N (normative) Proof tracking test . 196
Annex O (informative) Selection and sequence of the tests of Clause 30 . 197
Annex P (informative) Guidance for the application of this standard to appliances
used in tropical climates . 202
Annex Q (informative) Sequence of tests for the evaluation of electronic circuits . 204
Annex R (normative) Software evaluation . 207
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 . 221
Annex T (normative) UV-C radiation effect on non-metallic materials . 222
Annex U (normative) Appliances intended for remote communication through public
networks . 225
Annex AA (normative) Combination microwave ovens . 229
Annex BB (normative) Microwave ovens intended to be used on board ships . 232
Bibliography . 234
Index of defined terms . 237
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 . 140
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 . 141
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 . 142
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 . 143
Figure 5 – Small part . 144
Figure 6 – Example of an electronic circuit with low-power points . 144
Figure 7 – Test finger nail . 145
Figure 8 – Flexing test apparatus . 146
Figure 9 – Constructions of cord anchorages . 147
Figure 10 – An example of parts of an earthing terminal . 148
Figure 11 – Examples of clearances .
...
IEC 60335-2-25 ®
Edition 8.0 2024-07
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Household and similar electrical appliances – Safety –
Part 2-25: Particular requirements for microwave ovens, including combination
microwave ovens
Appareils électrodomestiques et analogues – Sécurité –
Partie 2-25: Exigences particulières pour les fours à micro-ondes, y compris les
fours à micro-ondes combinés
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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 60335-2-25 ®
Edition 8.0 2024-07
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Household and similar electrical appliances – Safety –
Part 2-25: Particular requirements for microwave ovens, including combination
microwave ovens
Appareils électrodomestiques et analogues – Sécurité –
Partie 2-25: Exigences particulières pour les fours à micro-ondes, y compris les
fours à micro-ondes combinés
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 13.120, 97.040.20 ISBN 978-2-8322-9184-9
– 2 – IEC 60335-2-25:2024 © IEC 2024
CONTENTS
FOREWORD . 4
INTRODUCTION . 7
1 Scope . 8
2 Normative references . 9
3 Terms and definitions . 9
4 General requirement . 10
5 General conditions for the tests . 10
6 Classification . 11
7 Marking and instructions . 11
8 Protection against access to live parts . 13
9 Starting of motor-operated appliances . 13
10 Power input and current . 14
11 Heating . 14
12 Charging of metal-ion batteries . 16
13 Leakage current and electric strength at operating temperature . 16
14 Transient overvoltages . 16
15 Moisture resistance . 17
16 Leakage current and electric strength . 18
17 Overload protection of transformers and associated circuits . 19
18 Endurance . 19
19 Abnormal operation . 20
20 Stability and mechanical hazards . 22
21 Mechanical strength . 22
22 Construction . 24
23 Internal wiring . 30
24 Components . 30
25 Supply connection and external flexible cords . 31
26 Terminals for external conductors . 31
27 Provision for earthing . 31
28 Screws and connections . 31
29 Clearances, creepage distances and solid insulation . 31
30 Resistance to heat and fire . 31
31 Resistance to rusting . 32
32 Radiation, toxicity and similar hazards . 32
Annexes . 37
Annex A (informative) Routine tests . 38
Annex B (normative) Battery-operated appliances, separable batteries and detachable
batteries for battery-operated appliances . 40
Annex R (normative) Software evaluation . 41
Annex AA (normative) Combination microwave ovens . 42
Annex BB (normative) Microwave ovens intended to be used on board ships . 45
Bibliography . 47
Figure 101 – Test rod for door interlock concealment . 33
Figure 102 – Void . 33
Figure 103 – Test cabinet including separation board, position of funnel and example
for direction of tilt . 33
Figure 104 – Probe for measuring surface temperatures . 34
Figure 105 – Front view of appliance with identification of excluded areas . 35
Figure 106 – Arrangement of work surface for spillage test on built-in microwave oven . 35
Figure 107 – Detail of bottle cap and position of hole . 36
Figure 108 – Spillage solution bottle . 36
Figure 109 – Bottle position for the spillage test . 36
Table 101 – Maximum temperature rises of external accessible surfaces under normal
operating conditions . 16
– 4 – IEC 60335-2-25:2024 © IEC 2024
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
HOUSEHOLD AND SIMILAR ELECTRICAL APPLIANCES –
SAFETY –
Part 2-25: Particular requirements for microwave ovens,
including combination 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 eff
...
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