Household and similar electrical appliances - Safety - Part 2-11: Particular requirements for tumble dryers

IEC 60335-2-11:2019 is available as IEC 60335-2-11:2019 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.IEC 60335-2-11:2019 deals with the safety of electric tumble dryers intended for household and similar purposes, their rated voltage being not more than 250 V for single-phase appliances and 480 V for other appliances. This standard applies to the drying function of washing machines having a drying cycle. This standard also deals with the safety of tumble dryers that use a refrigerating system, incorporating sealed motor-compressors, for drying textile material. These appliances may use flammable refrigerants. Additional requirements for these appliances are given in Annex AA. 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. Examples of such appliances are tumble dryers for communal use in blocks of flats or in launderettes. As far as is practicable, this standard deals with the common 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.
Attention is drawn to the fact that:
– for appliances intended to be used in vehicles or on board ships or aircraft, additional requirements may 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 water supply 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);
– appliances incorporating steam generating devices in which steam is produced at a pressure exceeding 50 kPa.
This eighth edition cancels and replaces the seventh edition published in 2008, Amendment 1:2012 and Amendment 2:2015. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the seventh edition:
– aligns the text with IEC 60335-1, Ed 5, and its Amendments 1 and 2;
– some notes have been converted to normative text (7.12, 7.12.1, 11.3, 19.101, AA.5.2);
– more detailed test specifications have been given in 11.3 and 15.2;
– specific requirements have been added in 3.1.9, 3.6.101, 7.12, 11.7, 19.1, and Clause 22 to cover appliances with steam generators;
– specific requirements have been added in 22.108 to cover programmable electronic circuits;
– Annex AA has been deleted, because it is covered by Part 1 and the remaining annexes have been renumbered.
This part 2 is to be used in conjunction with the latest edition of IEC 60335-1 and its amendments. It was established on the basis of the fifth edition (2010) of that standard.

Appareils électrodomestiques et analogues - Sécurité - Partie 2-11: Exigences particulières pour les sèche-linge à tambour

IEC 60335-2-11:2019 est disponible sous forme de IEC 60335-2-11:2019 RLV qui contient la Norme internationale et sa version Redline, illustrant les modifications du contenu technique depuis l'édition précédente.L'IEC 60335-2-11:2019 traite de la sécurité des sèche-linge à tambour 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. La présente norme s'applique à la fonction de séchage des machines à laver le linge ayant un cycle de séchage. La présente norme traite également de la sécurité des sèche-linge à tambour utilisant un système de réfrigération à motocompresseurs hermétiques pour sécher le linge. Ces appareils peuvent utiliser des fluides frigorigènes inflammables. Des exigences supplémentaires pour ces appareils sont données à l’Annexe AA. 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 usagers non avertis dans des magasins, chez des artisans et dans des fermes, relèvent du domaine d'application de la présente norme. Les sèche-linge à tambour mis à la disposition commune des usagers dans les immeubles d’habitation ou dans les blanchisseries automatiques sont des exemples de tels appareils. Dans la mesure du possible, la présente norme traite des dangers ordinaires présentés par les appareils, encourus par toutes les personnes. Cependant, la présente norme ne tient généralement pas compte:
– des personnes (y compris des enfants) dont les capacités physiques, sensorielles ou mentales; ou le manque d’expérience et de connaissance les empêche(nt) d’utiliser l’appareil en toute sécurité sans surveillance ou instruction;
– de l’utilisation de l’appareil comme jouet par des enfants.
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 les organismes nationaux responsables de l'alimentation en eau;
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 équipés de dispositifs générant de la vapeur dans lesquels la vapeur est produite à une pression dépassant 50 kPa.
Cette huitième édition annule et remplace la septième édition parue en 2008, l'Amendement 1:2012 et l'Amendement 2:2015. Cette édition constitue une révision technique.
Cette édition inclut les modifications techniques majeures suivantes par rapport à la septième édition:
– alignement du texte sur l’IEC 60335-1, Éd. 5, et ses Amendements 1 et 2;
– conversion de certaines notes en texte normatif (7.12, 7.12.1, 11.3, 19.101, AA.5.2);
– modalités d’essai plus amplement détaillées en 11.3 et en 15.2;
– ajout d’exigences spécifiques en 3.1.9, 3.6.101, 7.12, 11.7, 19.1 et à l’Article 22 pour couvrir les appareils à générateurs de vapeur;
– ajout d’exigences spécifiques en 22.108 pour couvrir les circuits électroniques programmables;
– suppression de l’Annexe AA puisque son contenu est couvert par la Partie 1, et renumérotation des annexes restantes.
La présente partie 2 doit être utilisée conjointement avec la dernière édition de l’IEC 60335-1 et ses amendements. Elle a été établie sur la base de la cinquième édition (2010) de cette norme.

General Information

Status
Published
Publication Date
14-Apr-2019
Current Stage
PPUB - Publication issued
Completion Date
15-Apr-2019
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IEC 60335-2-11
Edition 8.0 2019-04
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Household and similar electrical appliances – Safety –
Part 2-11: Particular requirements for tumble dryers
Appareils électrodomestiques et analogues – Sécurité –
Partie 2-11: Exigences particulières pour les sèche-linge à tambour
IEC 60335-2-11:2019-04(en-fr)
---------------------- Page: 1 ----------------------
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---------------------- Page: 2 ----------------------
IEC 60335-2-11
Edition 8.0 2019-04
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Household and similar electrical appliances – Safety –
Part 2-11: Particular requirements for tumble dryers
Appareils électrodomestiques et analogues – Sécurité –
Partie 2-11: Exigences particulières pour les sèche-linge à tambour
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 13.120; 97.060 ISBN 978-2-8322-6810-0

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 60335-2-11:2019 © IEC 2019
CONTENTS

FOREWORD ........................................................................................................................... 4

INTRODUCTION ..................................................................................................................... 7

1 Scope .............................................................................................................................. 8

2 Normative references ...................................................................................................... 8

3 Terms and definitions ...................................................................................................... 9

4 General requirement ...................................................................................................... 10

5 General conditions for the tests ..................................................................................... 10

6 Classification ................................................................................................................. 10

7 Marking and instructions ................................................................................................ 10

8 Protection against access to live parts ........................................................................... 11

9 Starting of motor-operated appliances ........................................................................... 12

10 Power input and current ................................................................................................. 12

11 Heating .......................................................................................................................... 12

12 Void ............................................................................................................................... 13

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

14 Transient overvoltages .................................................................................................. 13

15 Moisture resistance ....................................................................................................... 13

16 Leakage current and electric strength ............................................................................ 14

17 Overload protection of transformers and associated circuits .......................................... 14

18 Endurance ..................................................................................................................... 14

19 Abnormal operation ....................................................................................................... 14

20 Stability and mechanical hazards ................................................................................... 15

21 Mechanical strength ...................................................................................................... 17

22 Construction .................................................................................................................. 17

23 Internal wiring ................................................................................................................ 18

24 Components .................................................................................................................. 18

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 ............................................................................................................................... 21

Annex R (normative) Software evaluation ............................................................................ 22

Annex AA (normative) Tumble dryers that use a refrigerating system incorporating

sealed motor-compressors for carrying out the drying process .............................................. 23

Annex BB (normative) Equipment protection by type of protection "n" .................................. 31

Bibliography .......................................................................................................................... 32

---------------------- Page: 4 ----------------------
IEC 60335-2-11:2019 © IEC 2019 – 3 –

Figure 101 – Probe for measuring surface temperatures ....................................................... 20

Table 101 – Maximum temperature rises for accessible external surfaces under normal

operating conditions with the door closed ............................................................................. 13

Table 201 – Maximum temperatures for motor-compressors ................................................. 26

Table 202 – Refrigerant flammability parameters .................................................................. 29

---------------------- Page: 5 ----------------------
– 4 – IEC 60335-2-11:2019 © IEC 2019
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
HOUSEHOLD AND SIMILAR ELECTRICAL APPLIANCES – SAFETY –
Part 2-11: Particular requirements for tumble dryers
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 60335-2-11 has been prepared by IEC technical committee 61:

Safety of household and similar electrical appliances.
This eighth edition cancels and replaces the seventh edition published in 2008,

Amendment 1:2012 and Amendment 2:2015. This edition constitutes a technical revision.

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

edition:
– aligns the text with IEC 60335-1, Ed 5, and its Amendments 1 and 2;

– some notes have been converted to normative text (7.12, 7.12.1, 11.3, 19.101, AA.5.2);

– more detailed test specifications have been given in 11.3 and 15.2;

– specific requirements have been added in 3.1.9, 3.6.101, 7.12, 11.7, 19.1, and Clause 22

to cover appliances with steam generators;
---------------------- Page: 6 ----------------------
IEC 60335-2-11:2019 © IEC 2019 – 5 –

– specific requirements have been added in 22.108 to cover programmable electronic

circuits;

– Annex AA has been deleted, because it is covered by Part 1 and the remaining annexes

have been renumbered.
The text of this International Standard is based on the following documents:
FDIS Report on voting
61/5786/FDIS 61/5803/RVD

Full information on the voting for the approval of this International Standard can be found in

the report on voting indicated in the above table.

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

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

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

This part 2 is to be used in conjunction with the latest edition of IEC 60335-1 and its

amendments. It was established on the basis of the fifth edition (2010) of that standard.

NOTE 1 When “Part 1” is mentioned in this standard, it refers to IEC 60335-1.

This part 2 supplements or modifies the corresponding clauses in IEC 60335-1, so as to

convert that publication into the IEC standard: Safety requirements for tumble dryers.

When a particular subclause of Part 1 is not mentioned in this part 2, that subclause applies

as far as is reasonable. When this standard states "addition", "modification" or "replacement",

the relevant text in Part 1 is to be adapted accordingly.
NOTE 2 The following numbering system is used:

– subclauses, tables and figures that are numbered starting from 101 are additional to those in Part 1;

– unless notes are in a new subclause or involve notes in Part 1, they are numbered starting from 101, including

those in a replaced clause or subclause;
– additional annexes are lettered AA, BB, etc.
NOTE 3 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 4 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.
---------------------- Page: 7 ----------------------
– 6 – IEC 60335-2-11:2019 © IEC 2019

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.
– 3.1.9: The textile material has different dimensions (USA).
– 6.2: Tumble dryers are not required to be IPX4 (USA).

– 7.12: Actual articles of clothing can be specified instead and warnings are required to be marked on the

appliance regarding the use of chemicals for cleaning (USA).
– 11.2: The test condition is different (USA).

– 11.7: This test is continued until steady conditions are established and different criteria are used to determine

when steady conditions are reached (USA).
– 19.4: The test is different (USA).

– 19.9: A running overload test is carried out on automatically controlled tumble dryers (USA).

– 20.102: When considering accessibility to rotating drums, the maximum drum volume is 60 dm and the

maximum door opening is 200 mm (USA).
– 20.103: This test is different (USA).
– 22.104: The test is different (USA).

– 27.1: Earthing terminals and contacts are allowed to be electrically connected to the neutral conductor of a

tumble dryer (USA).

IMPORTANT – The 'colour inside' logo on the cover page of this publication indicates

that it contains colours which are considered to be useful for the correct

understanding of its contents. Users should therefore print this document using a

colour printer.
---------------------- Page: 8 ----------------------
IEC 60335-2-11:2019 © IEC 2019 – 7 –
INTRODUCTION

It has been assumed in the drafting of this International Standard that the execution of its

provisions is entrusted to appropriately qualified and experienced persons.

This standard recognizes the internationally accepted level of protection against hazards such

as electrical, mechanical, thermal, fire and radiation of appliances when operated as in

normal use taking into account the manufacturer's instructions. It also covers abnormal

situations that can be expected in practice and takes into account the way in which

electromagnetic phenomena can affect the safe operation of appliances.

This standard takes into account the requirements of IEC 60364 as far as possible so that

there is compatibility with the wiring rules when the appliance is connected to the supply

mains. However, national wiring rules may differ.

If an appliance within the scope of this standard also incorporates functions that are covered

by another part 2 of IEC 60335, the relevant part 2 is applied to each function separately, as

far as is reasonable. If applicable, the influence of one function on the other is taken into

account.

When a part 2 standard does not include additional requirements to cover hazards dealt with

in Part 1, Part 1 applies.

NOTE 1 This means that the technical committees responsible for the part 2 standards have determined that it is

not necessary to specify particular requirements for the appliance in question over and above the general

requirements.

This standard is a product family standard dealing with the safety of appliances and takes

precedence over horizontal and generic standards covering the same subject.

NOTE 2 Horizontal and generic standards covering a hazard are not applicable since they have been taken into

consideration when developing the general and particular requirements for the IEC 60335 series of standards. For

example, in the case of temperature requirements for surfaces on many appliances, generic standards, such as

ISO 13732-1 for hot surfaces, are not applicable in addition to Part 1 or part 2 standards.

An appliance that complies with the text of this standard will not necessarily be considered to

comply with the safety principles of the standard if, when examined and tested, it is found to

have other features which impair the level of safety covered by these requirements.

An appliance employing materials or having forms of construction differing from those detailed

in the requirements of this standard may be examined and tested according to the intent of

the requirements and, if found to be substantially equivalent, may be considered to comply

with the standard.
---------------------- Page: 9 ----------------------
– 8 – IEC 60335-2-11:2019 © IEC 2019
HOUSEHOLD AND SIMILAR ELECTRICAL APPLIANCES – SAFETY –
Part 2-11: Particular requirements for tumble dryers
1 Scope
This clause of Part 1 is replaced by the following.

This International Standard deals with the safety of electric tumble dryers intended for

household and similar purposes, their rated voltage being not more than 250 V for single-

phase appliances and 480 V for other appliances.

NOTE 101 This standard applies to the drying function of washing machines having a drying cycle.

This standard also deals with the safety of tumble dryers that use a refrigerating system,

incorporating sealed motor-compressors, for drying textile material. These appliances may

use flammable refrigerants. Additional requirements for these appliances are given in

Annex AA.

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.

NOTE 102 Examples of such appliances are tumble dryers for communal use in blocks of flats or in launderettes.

As far as is practicable, this standard deals with the common 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.
NOTE 103 Attention is drawn to the fact that

– for appliances intended to be used in vehicles or on board ships or aircraft, additional requirements may 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 water supply authorities,

NOTE 104 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);

– appliances incorporating steam generating devices in which steam is produced at a pressure exceeding

50 kPa.
2 Normative references
This clause of Part 1 is applicable except as follows.
Addition:
---------------------- Page: 10 ----------------------
IEC 60335-2-11:2019 © IEC 2019 – 9 –
IEC 60584-1, Thermocouples – Part 1: EMF specifications and tolerances
3 Terms and definitions
This clause of Part 1 is applicable except as follows.
3.1 Definitions relating to physical characteristics
Replacement:
3.1.9
normal operation
operation of the appliance under the following conditions:

The appliance is operated filled with textile material having a mass in the dry condition equal

to the maximum load stated in the instructions.

The textile material consists of pre-washed double-hemmed cotton sheets having dimensions

2 2

approximately 70 cm × 70 cm and a specific mass between 140 g/m and 175 g/m in the dry

condition. The textile material is soaked with water having a temperature of 25 °C ± 5 °C and

a mass equal to that of the textile material.

If the drying function can automatically follow the washing function in a washing machine, the

appliance is not separately loaded. The appliance is operated with the maximum quantity of

textile material stated in the instructions for the combined washing-drying cycle.

Note 101 to entry: Cotton having a water content not exceeding 10 % is considered to be in the dry condition.

Cotton conditioned for 24 h in still air, having a temperature of 20 °C ± 2 °C, a relative humidity between 60 % and

70 % and a pressure between 860 mbar and 1 060 mbar, will contain approximately 7 % water.

A steam generator intended to be filled by hand is filled according to the instructions, water

being added to maintain the steam generation.

A steam generator intended to be filled automatically is connected to the water mains.

3.5 Definitions relating to types of appliances
3.5.101
tumble dryer

appliance in which textile material is dried by tumbling in a rotating drum through which

heated air is blown
3.5.102
condensation-type tumble dryer

tumble dryer in which the air used for the drying process is dehumidified by cooling

3.6 Definitions relating to parts of an appliance
3.6.101
steam generator

device in which steam is produced at a pressure not exceeding 50 kPa and in which the

pressure drops to atmospheric pressure when the steam is not supplied
3.8 Definitions relating to miscellaneous matters
3.8.101
cool down period

final part of the tumble dryer cycle where the drum is continuously rotated with reduced

power to the heating element and with air circulation in order to reduce the possibility of

spontaneous combustion of the clothes load
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– 10 – IEC 60335-2-11:2019 © IEC 2019

Note 1 to entry: Continuous rotation does not mean rotation in same direction if the intended operation is to

reverse direction in normal use.
4 General requirement
This clause of Part 1 is applicable.
5 General conditions for the tests
This clause of Part 1 is applicable.
6 Classification
This clause of Part 1 is applicable except as follows.
6.2 Addition:
Appliances shall be at least IPX4.
7 Marking and instructions
This clause of Part 1 is applicable except as follows.
7.1 Addition:

The appliance shall be marked with symbol ISO 7000-0790 (2004-01) or with the substance of

the following:
Read the instructions
7.10 Addition:
If the off position is only indicated by letters, the word "off" shall be used.
7.12 Addition:
The instructions shall state

– the maximum mass of dry textile material in kilograms to be used in the appliance;

– that the tumble dryer is not to be used if industrial chemicals have been used for cleaning;

– that the lint trap has to be cleaned frequently, if applicable;

– that lint must not to be allowed to accumulate around the tumble dryer (not applicable for

appliances intended to be vented to the exterior of the building);

– that adequate ventilation has to be provided to avoid the back flow of gases into the room

from appliances burn
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