Household and similar electrical appliances - Safety - Part 1: General requirements

IEC 60335-1:2020 deals with the safety of electrical appliances for household and similar purposes, their rated voltage being not more than 250 V for single-phase appliances and 480 V for other appliances including direct current (DC) supplied appliances and battery-operated appliances.
Appliances not intended for normal household use but which nevertheless may 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.
This standard deals with the reasonably foreseeable hazards presented by appliances that are encountered by all persons. 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.
Additional requirements may be necessary for appliances intended to be used in vehicles or on board ships or aircraft. In many countries, additional requirements are specified by the national health authorities, the national authorities responsible for the protection of labour, the national water supply authorities and similar authorities.
This standard does not apply to:
– appliances intended exclusively for industrial purposes;
– 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);
– audio, video and similar electronic apparatus (IEC 60065);
– medical electrical equipment (IEC 60601 series);
– hand-held motor-operated electric tools (IEC 60745 series);
– information technology equipment (IEC 60950-1);
– transportable motor-operated electric tools (IEC 61029 series);
– audio/video, information and communication technology equipment (IEC 62368-1);
– electric motor-operated hand-held tools, transportable tools and lawn and garden machinery (IEC 62841 series).
This sixth edition cancels and replaces the fifth edition published in 2010, Amendment 1: 2013 and Amendment 2:2016. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous edition (minor changes are not listed):
a) updated the text of this standard to align with the most recent editions of the dated normative references;
b) deleted some notes and converted many other notes, in whole or in part, to normative text;
c) changed some Annex designations from normative to informative;
d) introduced information on Guidance documents concerning the application of the safety requirements covered by IEC 60335 series and on how to retrieve them;
e) clarified requirements for PELV circuits;
f) clarification of requirements on measurement of power input and rated current when they vary throughout the operating cycle;
g) replaced normative Annex S with the informative Annex S "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";
h) introduced and clarified mechanical strength requirements for appliances with integral pins for insertion into socket-outlets;
i) revised requirements for battery-operated appliances;
j) introduced requirements for metal-ion batteries including a new Clause 12 Charging of metal-ion batteries;
k) introduced the application of test probe 18;
l) introduced requirements for appliances incorporating appliance outlets and socket-outlets accessible to the user;
m) revised and clarified requirements for appliances incorporating a functional earth;
n) introduced moisture resistance test requirements for appliances that incorporate an automatic cord reel and that have a second numeral IP rating;
o) clarified the appliance test criteria for the moisture resistance for appliances and parts of appliances with inte

Appareils électrodomestiques et analogues - Sécurité - Partie 1 : Exigences générales

L'IEC 60335-1:2020 traite de la sécurité des appareils électriques pour usages domestiques et analogues dont la tension assignée n'est pas supérieure à 250 V pour les appareils monophasés et à 480 V pour les autres appareils, y compris les appareils alimentés en courant continu (CC) et les appareils alimentés par batteries.
Les appareils non destinés à un usage domestique normal, mais qui néanmoins peuvent 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.
La présente norme traite des dangers raisonnablement prévisibles que présentent les appareils pour toutes les personnes.
Cependant, la présente norme ne tient pas compte en général:
– 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;
– de l'utilisation de l'appareil comme jouet par des enfants.
Des exigences supplémentaires peuvent être nécessaires pour les appareils destinés à être utilisés dans des véhicules ou à bord de navires ou d'avions. 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 de l'alimentation en eau et par des organismes similaires.
La présente norme ne s'applique pas:
– aux appareils prévus exclusivement pour des usages industriels;
– aux appareils destinés à être utilisés dans des locaux présentant des conditions particulières, telles que la présence d'une atmosphère corrosive ou explosive (poussière, vapeur ou gaz);
– aux appareils audio, vidéo et appareils électroniques analogues (IEC 60065);
– aux appareils électromédicaux (série IEC 60601);
– aux outils électroportatifs à moteur (série IEC 60745);
– aux matériels de traitement de l'information (IEC 60950-1);
– aux machines-outils électriques semi-fixes (série IEC 61029);
– aux équipements des technologies de l'audio/vidéo, de l'information et de la communication (IEC 62368-1);
– aux outils électroportatifs à moteur, aux outils portables et aux machines pour jardins et pelouses (série IEC 62841).
Cette sixième édition annule et remplace la cinquième édition parue en 2010, l'Amendement 1:2013 et l'Amendement 2:2016. Cette édition constitue une révision technique.
Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente (les modifications mineures ne sont pas répertoriées):
a) mise à jour du texte de la présente norme pour l'aligner avec les éditions les plus récentes des références normatives datées;
b) suppression de quelques notes et conversion de plusieurs autres notes, en intégralité ou en partie, en texte normatif;
c) modification de certaines désignations d'annexes de normatives à informatives;
d) introduction d'informations sur les documents de recommandations concernant l'application des exigences de sécurité couvertes par la série IEC 60335 et sur la manière de les récupérer;
e) clarification des exigences relatives aux circuits à TBTP;
f) clarification des exigences relatives au mesurage de la puissance et du courant nominal lorsqu'ils varient au cours du cycle de fonctionnement;
g) remplacement de l'Annexe S normative par l'Annexe S informative "Recommandations relatives à l'application de la présente norme pour le mesurage de la puissance et du courant sur la base des exigences du 10.1 et du 10.2 concernant la période représentative";
h) introduction et clarification d'exigences concernant la résistance mécanique des appareils équipés de broches intégrées destinées à être insérées dans des socles de prises de courant;
i) révision des exigences relatives aux appareils alime

General Information

Status
Published
Publication Date
01-Sep-2020
Current Stage
PPUB - Publication issued
Completion Date
02-Sep-2020
Ref Project

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IEC 60335-1
Edition 6.0 2020-09
INTERNATIONAL
STANDARD
colour
inside
Household and similar electrical appliances – Safety –
Part 1: General requirements
IEC 60335-1:2020-09(en)
---------------------- Page: 1 ----------------------
THIS PUBLICATION IS COPYRIGHT PROTECTED
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---------------------- Page: 2 ----------------------
IEC 60335-1
Edition 6.0 2020-09
INTERNATIONAL
STANDARD
colour
inside
Household and similar electrical appliances – Safety –
Part 1: General requirements
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 13.120; 97.030 ISBN 978-2-8322-8600-5

Warning! Make sure that you obtained this publication from an authorized distributor.

® Registered trademark of the International Electrotechnical Commission
---------------------- Page: 3 ----------------------
– 2 – IEC 60335-1:2020 © IEC 2020
CONTENTS

FOREWORD......................................................................................................................... 6

INTRODUCTION ................................................................................................................... 9

1 Scope .......................................................................................................................... 11

2 Normative references .................................................................................................. 11

3 Terms and definitions .................................................................................................. 16

4 General requirement .................................................................................................... 28

5 General conditions for the tests .................................................................................... 28

6 Classification ............................................................................................................... 32

7 Marking and instructions .............................................................................................. 32

8 Protection against access to live parts ......................................................................... 41

9 Starting of motor-operated appliances .......................................................................... 43

10 Power input and current ............................................................................................... 43

11 Heating ....................................................................................................................... 45

12 Charging of metal-ion batteries .................................................................................... 51

13 Leakage current and electric strength at operating temperature .................................... 52

14 Transient overvoltages ................................................................................................ 55

15 Moisture resistance ..................................................................................................... 55

16 Leakage current and electric strength........................................................................... 58

17 Overload protection of transformers and associated circuits.......................................... 60

18 Endurance ................................................................................................................... 60

19 Abnormal operation ..................................................................................................... 60

20 Stability and mechanical hazards ................................................................................. 71

21 Mechanical strength ..................................................................................................... 72

22 Construction ................................................................................................................ 74

23 Internal wiring .............................................................................................................. 86

24 Components ................................................................................................................ 88

25 Supply connection and external flexible cords .............................................................. 93

26 Terminals for external conductors .............................................................................. 101

27 Provision for earthing ................................................................................................. 103

28 Screws and connections ............................................................................................ 105

29 Clearances, creepage distances and solid insulation .................................................. 107

30 Resistance to heat and fire ........................................................................................ 116

31 Resistance to rusting ................................................................................................. 121

32 Radiation, toxicity and similar hazards ....................................................................... 121

Annex A (informative) Routine tests .................................................................................. 135

Annex B (normative) Battery-operated appliances, separable batteries and detachable

batteries for battery-operated appliances ........................................................................... 137

Annex C (normative) Ageing test on motors ....................................................................... 158

Annex D (normative) Thermal motor protectors .................................................................. 159

Annex E (normative) Needle-flame test ............................................................................. 160

---------------------- Page: 4 ----------------------
IEC 60335-1:2020 © IEC 2020 – 3 –

Annex F (normative) Capacitors ........................................................................................ 161

Annex G (normative) Safety isolating transformers ............................................................ 163

Annex H (normative) Switches .......................................................................................... 164

Annex I (normative) Motors having basic insulation that is inadequate for the rated

voltage of the appliance .................................................................................................... 166

Annex J (normative) Coated printed circuit boards ............................................................. 168

Annex K (informative) Overvoltage categories ................................................................... 169

Annex L (informative) Guidance for the measurement of clearances and creepage

distances .......................................................................................................................... 170

Annex M (informative) Pollution degree ............................................................................. 173

Annex N (normative) Proof tracking test ............................................................................ 174

Annex O (informative) Selection and sequence of the tests of Clause 30 ............................ 175

Annex P (informative) Guidance for the application of this standard to appliances used

in tropical climates ............................................................................................................ 180

Annex Q (informative) Sequence of tests for the evaluation of electronic circuits ................ 182

Annex R (normative) Software evaluation .......................................................................... 185

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 ........................................................................................................ 199

Annex T (normative) UV-C radiation effect on non-metallic materials ................................. 200

Annex U (normative) Appliances intended for remote communication through public

networks ........................................................................................................................... 203

Bibliography ..................................................................................................................... 207

Index of defined terms ...................................................................................................... 210

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 ...... 122

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 ...................................................................................................................... 123

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 .......... 124

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 ...................................................................................................................... 125

Figure 5 – Small part ........................................................................................................ 126

Figure 6 – Example of an electronic circuit with low-power points ....................................... 126

Figure 7 – Test finger nail ................................................................................................. 127

Figure 8 – Flexing test apparatus ...................................................................................... 128

Figure 9 – Constructions of cord anchorages ..................................................................... 129

Figure 10 – An example of parts of an earthing terminal .................................................... 130

Figure 11 – Examples of clearances .................................................................................. 131

Figure 12 – Example of the placement of the cylinder ........................................................ 132

Figure 13 – Small parts cylinder ........................................................................................ 133

Figure 14 – Example of a specified operating region of a lithium-ion cell during charging .... 134

Figure B.1 – Examples of battery-operated appliance constructions and application of

normative Annex B ........................................................................................................... 155

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– 4 – IEC 60335-1:2020 © IEC 2020
Figure B.2 – Examples of correct polarity connection marking representing three

batteries ........................................................................................................................... 157

Figure I.1 – Simulation of faults ......................................................................................... 167

Figure L.1 – Sequence for the determination of clearances ................................................ 170

Figure L.2 – Sequence for the determination of creepage distances ................................... 171

Figure L.3 – Measurement of clearances ........................................................................... 172

Figure O.1 – Tests for resistance to heat ........................................................................... 175

Figure O.2 – Selection and sequence of tests for resistance to fire in hand-held

appliances ........................................................................................................................ 176

Figure O.3 – Selection and sequence of tests for resistance to fire in attended

appliances ........................................................................................................................ 176

Figure O.4 – Selection and sequence of tests for resistance to fire in unattended

appliances ........................................................................................................................ 177

Figure O.5 – Some applications of the term "within a distance of 3 mm" ............................. 179

Figure Q.1 – Flowchart outlining the sequence of tests for the evaluation of electronic

circuits ............................................................................................................................. 183

Figure S.1 – Flowchart giving guidance on measurement of power input and current

concerning the representative period ................................................................................. 199

Table 1 – Power input deviation .......................................................................................... 43

Table 2 – Current deviation ................................................................................................. 44

Table 3 – Maximum normal temperature rises ..................................................................... 47

Table 4 – Voltage for electric strength test .......................................................................... 54

Table 5 – Characteristics of high-voltage sources ................................................................ 54

Table 6 – Impulse test voltage ............................................................................................ 55

Table 7 – Test voltages ....................................................................................................... 59

Table 8 – Maximum winding temperature ............................................................................. 63

Table 9 – Maximum abnormal temperature rise ................................................................... 69

Table 10 – Dimensions of cables and conduits .................................................................... 94

Table 11 – Minimum cross-sectional area of conductors ...................................................... 96

Table 12 – Pull force and torque ......................................................................................... 98

Table 13 – Nominal cross-sectional area of conductors...................................................... 102

Table 14 – Torque for testing screws and nuts ................................................................... 106

Table 15 – Rated impulse voltage ..................................................................................... 108

Table 16 – Minimum clearances ........................................................................................ 109

Table 17 – Minimum creepage distances for basic insulation ............................................. 113

Table 18 – Minimum creepage distances for functional insulation ....................................... 114

Table 19 – Minimum thickness for accessible parts of reinforced insulation consisting

of a single layer ................................................................................................................ 116

Table A.1 – Test voltages ................................................................................................. 136

Table B.1 – Artificial source characteristics ....................................................................... 139

Table B.2 – Total area of openings for metal-ion cells ........................................................ 147

Table B.3 – Volume of air injected at 2 070 kPa ................................................................. 147

Table C.1 – Test conditions ............................................................................................... 158

Table R.1 – General fault/error conditions ......................................................................... 187

---------------------- Page: 6 ----------------------
IEC 60335-1:2020 © IEC 2020 – 5 –

Table R.2 – Specific fault/error conditions ......................................................................... 189

Table R.3 – Semi-formal methods ..................................................................................... 195

Table R.4 – Software architecture specification ................................................................. 195

Table R.5 – Module design specification ............................................................................ 196

Table R.6 – Design and coding standards ......................................................................... 197

Table R.7 – Software safety validation .............................................................................. 197

Table T.1 – Minimum property retention limits after UV-C exposure ................................... 201

Table T.2 – Minimum electric strength for internal wiring after UV-C exposure .................... 202

Table U.1 – Examples of acceptable measures against unauthorised access and

transmission fault/error modes .......................................................................................... 205

---------------------- Page: 7 ----------------------
– 6 – IEC 60335-1:2020 © IEC 2020
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
HOUSEHOLD AND SIMILAR ELECTRICAL APPLIANCES –
SAFETY –
Part 1: General requirements
FOREWORD

1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising

all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international

co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and

in addition to other activities, IEC publishes International Standards, Technical Specifications, Technical Reports,

Publicly Available Specifications (PAS) and Guides (hereafter referred to as "IEC Publication(s)"). Their

preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt with

may participate in this preparatory work. International, governmental and non-governmental organizations liaising

with the IEC also participate in this preparation. IEC collaborates closely with the International Organization for

Standardization (ISO) in accordance with conditions determined by agreement between the two organizations.

2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international

consensus of opinion on the relevant subjects since each technical committee has representation from all

interested IEC National Committees.

3) IEC Publications have the form of recommendations for international use and are accepted by IEC National

Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC

Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any

misinterpretation by any end user.

4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications

transparently to the maximum extent possible in their national and regional publications. Any divergence between

any IEC Publication and the corresponding national or regional publication shall be clearly indicated in the latter.

5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity

assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any

services carried out by independent certification bodies.

6) All users should ensure that they have the latest edition of this publication.

7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and

members of its technical committees and IEC National Committees for any personal injury, property damage or

other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and

expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC Publications.

8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is

indispensable for the correct application of this publication.

9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of patent

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

International Standard IEC 60335-1 has been prepared by IEC technical committee 61: Safety

of household and similar electrical appliances.

This sixth edition cancels and replaces the fifth edition published in 2010, Amendment 1:2013

and Amendment 2:2016. This edition constitutes a technical revision.

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

edition (minor changes are not listed):

a) updated the text of this standard to align with the most recent editions of the dated normative

references;

b) deleted some notes and converted many other notes, in whole or in part, to normative text;

c) changed some Annex designations from normative to informative;

d) introduced information on Guidance documents concerning the application of the safety

requirements covered by IEC 60335 series and on how to retrieve them;
---------------------- Page: 8 ----------------------
IEC 60335-1:2020 © IEC 2020 – 7 –
e) clarified requirements for PELV circuits;

f) clarification of requirements on measurement of power input and rated current when they

vary throughout the operating cycle;

g) replaced normative Annex S with the informative Annex S "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";

h) introduced and clarified mechanical strength requirements for appliances with integral pins

for insertion into socket-outlets;
i) revised requirements for battery-operated appliances;

j) introduced requirements for metal-ion batteries including a new Clause 12 Charging of

metal-ion batteries;
k) introduced the application of test probe 18;

l) introduced requirements for appliances incorporating appliance outlets and socket-outlets

accessible to the user;

m) revised and clarified requirements for appliances incorporating a functional earth;

n) introduced moisture resistance test requirements for appliances that incorporate an

automatic cord reel and that have a second numeral IP rating;

o) clarified the appliance test criteria for the moisture resistance for appliances and parts of

appliances with integral pins for insertion into socket-outlets;

p) introduced limits on the output voltage of an accessible safety extra-low voltage outlet or

connector or Universal Serial Bus (USB) under abnormal operation conditions;
q) introduced requirements to cover optical radiation hazards;

r) introduced external communication software management items into normative Annex R;

s) revised external communication requirements in Table R.1 and Table R.2;

t) introduced in new normative Annex U cyber security requirements to avoid unauthorized

access and the effects of transmission failures via remote communication through public

networks.
The text of this International Standard is based on the following documents:
FDIS Report on voting
61/6012/FDIS 61/6089/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.
The language used for the development of this International Standard is English.

This document has been drafted in accordance with the ISO/IEC Directives, Part 2.

A list of all parts of the IEC 60335 series, published under the general title Household and

similar electrical appliances – Safety, can be found on the IEC website.

This part is to be used in conjunction with the appropriate part 2 of IEC 60335. The parts 2

contain clauses to supplement or modify the corresponding clauses in this part to provide the

relevant requirements for each type of appliance.

This sixth edition of IEC 60335-1 is only to be used in conjunction with parts 2 that have been

established on the basis of this edition.
---------------------- Page: 9 ----------------------
– 8 – IEC 60335-1:2020 © IEC 2020
The following print types are used:
– requirements: in roman type;
– test specifications: in italic type;
– notes: in small roman type.

Words in bold in the text are defined in Clause 3. When a definition concerns an adjective, the

adjective and the associated noun are also in bold.

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.

NOTE The attention of National Committees is drawn to the fact that equipment manufacturers and testing

organizations may need a transitional period following publication of a new, amended or revised IEC publication in

which to make products in accordance with the new requirements and to equip themselves for conducting new or

revised tests.

It is the recommendation of the committee that the content of this publication be adopted for implementation nationally

not earlier than 12 months or later than 36 months from the date of publication.
The following differences exist in the countries indicated below.

– Introduction: The Part 1 standard (UL60335-1) is only used in combination with a part 2 (UL60335-2-x). National

differences are specified in these standards (USA).
– 5.7: The ambient temperature is 25 °C ± 10 °C (Japan).
– 5.7: The ambient temperature is 27 °C ± 5 °C (India).

– 6.1: Class 0 appliances and class 0I appliances are not allowed (Australia, European Union, India, Israel,

New Zealand, Norway, Singapore, Switzerland, United Kingdom).
– 7.12.2: The requirements for full disconnection do not apply (Japan).

– 7.12.8: The maximum inlet water pressure shall be at least 1,0 MPa (Denmark, Norway, Sweden and Finland).

– 13.2: The test circuit and some leakage current limits are different (India).

– 19.5: The test is also applicable to appliances intended to be permanently connected to fixed wiring (Norway).

– 22.2: The second paragraph of this subclause dealing with single-phase class I appliances with heating elements

cannot be complied with because of the supply system (France).

– 22.2: The second paragraph of this subclause, that deals with single-phase, permanently connected class I

appliances having heating elements, is not applicable due to the supply system (Norway).

– 22.2: Double-pole switches or protective devices are required (Norway).
– 25.3: A set of supply leads is not pe
...

IEC 60335-1
Edition 6.0 2020-09
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Household and similar electrical appliances – Safety –
Part 1: General requirements
Appareils électrodomestiques et analogues – Sécurité –
Partie 1: Exigences générales
IEC 60335-1:2020-09(en-fr)
---------------------- Page: 1 ----------------------
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International Standards for all electrical, electronic and related technologies.
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---------------------- Page: 2 ----------------------
IEC 60335-1
Edition 6.0 2020-09
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Household and similar electrical appliances – Safety –
Part 1: General requirements
Appareils électrodomestiques et analogues – Sécurité –
Partie 1: Exigences générales
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 13.120; 97.030 ISBN 978-2-8322-3935-3

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 60335-1:2020 © IEC 2020
CONTENTS

FOREWORD ........................................................................................................................... 6

INTRODUCTION ..................................................................................................................... 9

1 Scope ............................................................................................................................ 11

2 Normative references .................................................................................................... 11

3 Terms and definitions .................................................................................................... 16

4 General requirement ...................................................................................................... 28

5 General conditions for the tests ..................................................................................... 28

6 Classification ................................................................................................................. 32

7 Marking and instructions ................................................................................................ 32

8 Protection against access to live parts ........................................................................... 41

9 Starting of motor-operated appliances ........................................................................... 43

10 Power input and current ................................................................................................. 43

11 Heating .......................................................................................................................... 45

12 Charging of metal-ion batteries ...................................................................................... 51

13 Leakage current and electric strength at operating temperature ..................................... 52

14 Transient overvoltages .................................................................................................. 55

15 Moisture resistance ....................................................................................................... 56

16 Leakage current and electric strength ............................................................................ 58

17 Overload protection of transformers and associated circuits .......................................... 60

18 Endurance ..................................................................................................................... 61

19 Abnormal operation ....................................................................................................... 61

20 Stability and mechanical hazards ................................................................................... 71

21 Mechanical strength ...................................................................................................... 72

22 Construction .................................................................................................................. 74

23 Internal wiring ................................................................................................................ 86

24 Components .................................................................................................................. 88

25 Supply connection and external flexible cords ............................................................... 93

26 Terminals for external conductors ................................................................................ 101

27 Provision for earthing .................................................................................................. 103

28 Screws and connections .............................................................................................. 105

29 Clearances, creepage distances and solid insulation ................................................... 107

30 Resistance to heat and fire .......................................................................................... 116

31 Resistance to rusting ................................................................................................... 121

32 Radiation, toxicity and similar hazards ......................................................................... 121

Annex A (informative) Routine tests .................................................................................... 135

Annex B (normative) Battery-operated appliances, separable batteries and detachable

batteries for battery-operated appliances ............................................................................ 137

Annex C (normative) Ageing test on motors ........................................................................ 158

Annex D (normative) Thermal motor protectors ................................................................... 159

Annex E (normative) Needle-flame test ............................................................................... 160

Annex F (normative) Capacitors .......................................................................................... 161

Annex G (normative) Safety isolating transformers ............................................................. 163

---------------------- Page: 4 ----------------------
IEC 60335-1:2020 © IEC 2020 – 3 –

Annex H (normative) Switches ............................................................................................ 164

Annex I (normative) Motors having basic insulation that is inadequate for the rated

voltage of the appliance ...................................................................................................... 166

Annex J (normative) Coated printed circuit boards .............................................................. 168

Annex K (informative) Overvoltage categories .................................................................... 169

Annex L (informative) Guidance for the measurement of clearances and creepage

distances ............................................................................................................................ 170

Annex M (informative) Pollution degree............................................................................... 173

Annex N (normative) Proof tracking test .............................................................................. 174

Annex O (informative) Selection and sequence of the tests of Clause 30 ............................ 175

Annex P (informative) Guidance for the application of this standard to appliances used

in tropical climates .............................................................................................................. 180

Annex Q (informative) Sequence of tests for the evaluation of electronic circuits ................ 182

Annex R (normative) Software evaluation ........................................................................... 185

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 .......................................................................................................... 199

Annex T (normative) UV-C radiation effect on non-metallic materials .................................. 200

Annex U (normative) Appliances intended for remote communication through public

networks ............................................................................................................................. 203

Bibliography ........................................................................................................................ 207

Index of defined terms ........................................................................................................ 209

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 ...... 122

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 ........................................................................................................................ 123

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 .......... 124

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 ........................................................................................................................ 125

Figure 5 – Small part .......................................................................................................... 126

Figure 6 – Example of an electronic circuit with low-power points ....................................... 126

Figure 7 – Test finger nail ................................................................................................... 127

Figure 8 – Flexing test apparatus ........................................................................................ 128

Figure 9 – Constructions of cord anchorages ...................................................................... 129

Figure 10 – An example of parts of an earthing terminal ..................................................... 130

Figure 11 – Examples of clearances ................................................................................... 131

Figure 12 – Example of the placement of the cylinder ......................................................... 132

Figure 13 – Small parts cylinder .......................................................................................... 133

Figure 14 – Example of a specified operating region of a lithium-ion cell during charging .... 134

Figure B.1 – Examples of battery-operated appliance constructions and application of

normative Annex B.............................................................................................................. 155

Figure B.2 – Examples of correct polarity connection marking representing three

batteries ............................................................................................................................. 157

---------------------- Page: 5 ----------------------
– 4 – IEC 60335-1:2020 © IEC 2020

Figure I.1 – Simulation of faults .......................................................................................... 167

Figure L.1 – Sequence for the determination of clearances ................................................. 170

Figure L.2 – Sequence for the determination of creepage distances ................................... 171

Figure L.3 – Measurement of clearances ............................................................................ 172

Figure O.1 – Tests for resistance to heat ............................................................................ 175

Figure O.2 – Selection and sequence of tests for resistance to fire in hand-held

appliances .......................................................................................................................... 176

Figure O.3 – Selection and sequence of tests for resistance to fire in attended

appliances .......................................................................................................................... 176

Figure O.4 – Selection and sequence of tests for resistance to fire in unattended

appliances .......................................................................................................................... 177

Figure O.5 – Some applications of the term "within a distance of 3 mm" ............................. 179

Figure Q.1 – Flowchart outlining the sequence of tests for the evaluation of electronic

circuits ................................................................................................................................ 183

Figure S.1 – Flowchart giving guidance on measurement of power input and current

concerning the representative period .................................................................................. 199

Table 1 – Power input deviation ............................................................................................ 43

Table 2 – Current deviation ................................................................................................... 44

Table 3 – Maximum normal temperature rises ....................................................................... 47

Table 4 – Voltage for electric strength test ............................................................................ 54

Table 5 – Characteristics of high-voltage sources ................................................................. 55

Table 6 – Impulse test voltage .............................................................................................. 55

Table 7 – Test voltages......................................................................................................... 60

Table 8 – Maximum winding temperature .............................................................................. 63

Table 9 – Maximum abnormal temperature rise ..................................................................... 69

Table 10 – Dimensions of cables and conduits ...................................................................... 94

Table 11 – Minimum cross-sectional area of conductors ....................................................... 96

Table 12 – Pull force and torque ........................................................................................... 98

Table 13 – Nominal cross-sectional area of conductors ...................................................... 102

Table 14 – Torque for testing screws and nuts .................................................................... 106

Table 15 – Rated impulse voltage ....................................................................................... 108

Table 16 – Minimum clearances .......................................................................................... 109

Table 17 – Minimum creepage distances for basic insulation .............................................. 113

Table 18 – Minimum creepage distances for functional insulation ....................................... 114

Table 19 – Minimum thickness for accessible parts of reinforced insulation consisting

of a single layer .................................................................................................................. 116

Table A.1 – Test voltages ................................................................................................... 136

Table B.1 – Artificial source characteristics ......................................................................... 139

Table B.2 – Total area of openings for metal-ion cells ......................................................... 147

Table B.3 – Volume of air injected at 2 070 kPa .................................................................. 147

Table C.1 – Test conditions ................................................................................................ 158

Table R.1 – General fault/error conditions ........................................................................... 187

Table R.2 – Specific fault/error conditions ........................................................................... 189

Table R.3 – Semi-formal methods ....................................................................................... 195

---------------------- Page: 6 ----------------------
IEC 60335-1:2020 © IEC 2020 – 5 –

Table R.4 – Software architecture specification .................................................................. 195

Table R.5 – Module design specification ............................................................................. 196

Table R.6 – Design and coding standards ........................................................................... 197

Table R.7 – Software safety validation ................................................................................ 197

Table T.1 – Minimum property retention limits after UV-C exposure .................................... 201

Table T.2 – Minimum electric strength for internal wiring after UV-C exposure .................... 202

Table U.1 – Examples of acceptable measures against unauthorised access and

transmission fault/error modes ............................................................................................ 205

---------------------- Page: 7 ----------------------
– 6 – IEC 60335-1:2020 © IEC 2020
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
HOUSEHOLD AND SIMILAR ELECTRICAL APPLIANCES –
SAFETY –
Part 1: General requirements
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

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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

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3) IEC Publications have the form of recommendations for international use and are accepted by IEC National

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Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any

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any IEC Publication and the corresponding national or regional publication shall be clearly indicated in the latter.

5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity

assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any

services carried out by independent certification bodies.

6) All users should ensure that they have the latest edition of this publication.

7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and

members of its technical committees and IEC National Committees for any personal injury, property damage or

other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and

expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC Publications.

8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is

indispensable for the correct application of this publication.

9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of patent

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

International Standard IEC 60335-1 has been prepared by IEC technical committee 61: Safety

of household and similar electrical appliances.

This sixth edition cancels and replaces the fifth edition published in 2010, Amendment 1:2013

and Amendment 2:2016. This edition constitutes a technical revision.

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

edition (minor changes are not listed):

a) updated the text of this standard to align with the most recent editions of the dated normative

references;

b) deleted some notes and converted many other notes, in whole or in part, to normative text;

c) changed some Annex designations from normative to informative;

d) introduced information on Guidance documents concerning the application of the safety

requirements covered by IEC 60335 series and on how to retrieve them;
---------------------- Page: 8 ----------------------
IEC 60335-1:2020 © IEC 2020 – 7 –
e) clarified requirements for PELV circuits;

f) clarification of requirements on measurement of power input and rated current when they

vary throughout the operating cycle;

g) replaced normative Annex S with the informative Annex S "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";

h) introduced and clarified mechanical strength requirements for appliances with integral pins

for insertion into socket-outlets;
i) revised requirements for battery-operated appliances;

j) introduced requirements for metal-ion batteries including a new Clause 12 Charging of

metal-ion batteries;
k) introduced the application of test probe 18;

l) introduced requirements for appliances incorporating appliance outlets and socket-outlets

accessible to the user;

m) revised and clarified requirements for appliances incorporating a functional earth;

n) introduced moisture resistance test requirements for appliances that incorporate an

automatic cord reel and that have a second numeral IP rating;

o) clarified the appliance test criteria for the moisture resistance for appliances and parts of

appliances with integral pins for insertion into socket-outlets;

p) introduced limits on the output voltage of an accessible safety extra-low voltage outlet or

connector or Universal Serial Bus (USB) under abnormal operation conditions;
q) introduced requirements to cover optical radiation hazards;

r) introduced external communication software management items into normative Annex R;

s) revised external communication requirements in Table R.1 and Table R.2;

t) introduced in new normative Annex U cyber security requirements to avoid unauthorized

access and the effects of transmission failures via remote communication through public

networks.
The text of this International Standard is based on the following documents:
FDIS Report on voting
61/6012/FDIS 61/6089/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.
The language used for the development of this International Standard is English.

This document has been drafted in accordance with the ISO/IEC Directives, Part 2.

A list of all parts of the IEC 60335 series, published under the general title Household and

similar electrical appliances – Safety, can be found on the IEC website.

This part is to be used in conjunction with the appropriate part 2 of IEC 60335. The parts 2

contain clauses to supplement or modify the corresponding clauses in
...

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