Household and similar electrical appliances - Safety - Part 2-17: Particular requirements for blankets, pads, clothing and similar flexible heating appliances

IEC 60335-2-17:2012 deals with the safety of electric blankets, pads, clothing and other flexible appliances that heat the bed or human body, for household and similar purposes, their rated voltage being not more than 250 V. This standard also applies to control units supplied with the appliance. 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 in beauty parlours or by persons in cold ambient temperatures, are within the scope of this standard. As far as is practicable, this standard deals with the common hazards presented by appliances that are encountered by all persons in and around the home. However, in general, it does not take into account persons (including children) whose physical, sensory or mental capabilities or lack of experience and knowledge prevents them from using the appliance safely without supervision or instruction or children playing with the appliance. This third edition cancels and replaces the second edition published in 2002 including its Amendment 1 (2006) and its Amendment 2 (2008). It constitutes a technical revision. The principal changes in this edition as compared with the second edition are as follows (minor changes are not listed):
- The definition of PTC heating element has been deleted and the definition in Part 1 now applies. A definition of a heating element with PTC characteristics has been introduced instead (3.117). This has resulted in editorial changes to 5.7, 5.8.2, 7.1, 10.101, 11.2, 21.105, 21.111.1 and 21.112.
- The allowance for class I appliances has been deleted and requirements for appliances incorporating a functional earth have been incorporated (6.1, 7.1, 22.115).
- The working voltage of parts of class III construction is limited to 24 V (22.26).
- Some notes have been deleted or converted to normative text (3.107, 3.111, 3.113, 5.2, 5.3, 5.8.2, 11.8, 11.101, 11.102, 15.1, 15.101, 19.1, 19.13, 19.102, 19.103, 19.105, 19.106, 19.108, 19.109, 19.110, 19.111, 19.112, 21.1, 21.102, 21.103, 21.109, 21.110.3, 21.111.1, 21.111.2, 21.111.3, 21.112, 22.103, 22.114, 25.23, Annex AA, Annex CC 3.1.9, 19.201, 19.203).
- Modification of the marking requirements (7.1, 7.14, 7.15).
- Modification of the instructions (7.12).
- Clarification of the heat stroke test (11.101).
- The figure numbers have been updated to take into account deletion of Figure 103 in the previous edition.
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. Keywords: electric blanket: pad: heating element
This publication is to be read in conjunction with IEC 60335-1:2010.

Appareils électrodomestiques et analogues - Sécurité - Partie 2-17: Exigences particulières pour les couvertures, coussins, vêtements et appareils chauffants souples analogues

La CEI 60335-2-17:2012 traite de la sécurité des couvertures, coussins, vêtements et autres appareils électriques souples, destinés à chauffer un lit ou le corps humain, pour usages domestiques et analogues et dont la tension assignée n'est pas supérieure à 250 V. Cette norme s'applique également aux unités de commande fournies avec l'appareil. Les appareils non destinés à un usage domestique normal mais qui peuvent néanmoins constituer une source de danger pour le public, tels que les appareils destinés à être utilisés dans les instituts de beauté ou par des personnes à des températures ambiantes froides, sont compris dans le domaine d'application de la présente norme. Dans la mesure du possible, la présente norme traite des risques ordinaires présentés par les appareils, encourus par tous les individus à l'intérieur et autour de l'habitation. Cependant, cette norme ne tient pas compte en general, 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. Cette troisième édition annule et remplace la deuxième édition publiée en 2002, y compris son Amendement 1 (2006) et son Amendement 2 (2008). Elle constitue une révision technique. Les principales modifications apportées à cette édition par rapport à la deuxième édition sont les suivantes (les modifications mineures ne sont pas répertoriées):
- La définition de l'élément chauffant CTP a été supprimée et la définition figurant dans la Partie 1 s'applique désormais. La définition d'un élément chauffant à caractéristiques CTP a été introduite en remplacement (3.117), ce qui a engendré des modifications en 5.7, 5.8.2, 7.1, 10.101, 11.2, 21.105, 21.111.1 et 21.112.
- La tolérance applicable aux appareils de classe I a été supprimée et des exigences relatives aux appareils comportant une mise à la terre fonctionnelle ont été intégrées (6.1, 7.1, 22.115).
- La tension locale des parties de construction de la classe III est limitée à 24 V (22.26).
- Certaines notes ont été supprimées ou converties en texte normatif (3.107, 3.111, 3.113, 5.2, 5.3, 5.8.2, 11.8, 11.101, 11.102, 15.1, 15.101, 19.1, 19.13, 19.102, 19.103, 19.105, 19.106, 19.108, 19.109, 19.110, 19.111, 19.112, 21.1, 21.102, 21.103, 21.109, 21.110.3, 21.111.1, 21.111.2, 21.111.3, 21.112, 22.103, 22.114, 25.23, Annexe AA, Annexe CC 3.1.9, 19.201, 19.203).
- Modification des exigences de marquage (7.1, 7.14, 7.15).
- Modification des instructions (7.12).
- Clarification de l'essai de coup de chaleur (11.101).
- Les numéros des figures ont été mis à jour afin de prendre en compte la suppression de la Figure 103 dans l'édition précédente.
L'attention des Comités Nationaux est attirée sur le fait que les fabricants d'appareils et les organismes d'essai peuvent avoir besoin d'une période transitoire après la publication d'une nouvelle publication CEI, ou d'une publication amendée ou révisée, pour fabriquer des produits conformes aux nouvelles exigences et pour adapter leurs équipements aux nouveaux essais ou aux essais révisés. Le comité recommande que le contenu de la présente publication soit entériné au niveau national au plus tôt 12 mois et au plus tard 36 mois après la date de publication. Mots clé: couvertures électriques: cousins: élément chauffant
Cette publication doit être lue conjointement avec la CEI 60335-1:2010.

General Information

Status
Published
Publication Date
25-Mar-2012
Current Stage
PPUB - Publication issued
Start Date
26-Mar-2012
Completion Date
26-Mar-2012
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IEC 60335-2-17
Edition 3.0 2012-03
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Household and similar electrical appliances – Safety –
Part 2-17: Particular requirements for blankets, pads, clothing and similar
flexible heating appliances
Appareils électrodomestiques et analogues – Sécurité –
Partie 2-17: Exigences particulières pour les couvertures, coussins, vêtements
et appareils chauffants souples analogues
IEC 60335-2-17:2012
---------------------- Page: 1 ----------------------
THIS PUBLICATION IS COPYRIGHT PROTECTED
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---------------------- Page: 2 ----------------------
IEC 60335-2-17
Edition 3.0 2012-03
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Household and similar electrical appliances – Safety –
Part 2-17: Particular requirements for blankets, pads, clothing and similar
flexible heating appliances
Appareils électrodomestiques et analogues – Sécurité –
Partie 2-17: Exigences particulières pour les couvertures, coussins, vêtements
et appareils chauffants souples analogues
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX
ICS 13.120; 97.040.50 ISBN 978-2-8322-0040-7

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 – 60335-2-17 © IEC:2012
CONTENTS

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

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

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

2 Normative references ....................................................................................................... 9

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

4 General requirement ....................................................................................................... 11

5 General conditions for the tests ...................................................................................... 11

6 Classification .................................................................................................................. 13

7 Marking and instructions ................................................................................................. 13

8 Protection against access to live parts ............................................................................ 16

9 Starting of motor-operated appliances ............................................................................ 16

10 Power input and current ................................................................................................. 16

11 Heating .......................................................................................................................... 16

12 Void................................................................................................................................ 18

13 Leakage current and electric strength at operating temperature ...................................... 18

14 Transient overvoltages ................................................................................................... 19

15 Moisture resistance ........................................................................................................ 19

16 Leakage current and electric strength ............................................................................. 20

17 Overload protection of transformers and associated circuits ........................................... 21

18 Endurance ...................................................................................................................... 21

19 Abnormal operation ........................................................................................................ 21

20 Stability and mechanical hazards ................................................................................... 25

21 Mechanical strength ....................................................................................................... 25

22 Construction ................................................................................................................... 32

23 Internal wiring ................................................................................................................. 34

24 Components ................................................................................................................... 34

25 Supply connection and external flexible cords ................................................................ 35

26 Terminals for external conductors ................................................................................... 36

27 Provision for earthing ..................................................................................................... 36

28 Screws and connections ................................................................................................. 36

29 Clearances, creepage distances and solid insulation ...................................................... 36

30 Resistance to heat and fire ............................................................................................. 36

31 Resistance to rusting ...................................................................................................... 39

32 Radiation, toxicity and similar hazards ............................................................................ 39

Annexes ............................................................................................................................... 50

Annex A (informative) Routine tests ..................................................................................... 50

Annex AA (normative) Specification for the thermal insulation .............................................. 52

Annex BB (normative) Equipment for the mechanical strength test for blankets ................... 53

Annex CC (normative) Clothing ............................................................................................ 56

Bibliography .......................................................................................................................... 59

---------------------- Page: 4 ----------------------
60335-2-17 © IEC:2012 – 3 –

Figure 101 – Symbol for "Do not use folded or rucked" ......................................................... 39

Figure 102 – Symbol for "Do not insert pins" ......................................................................... 39

Figure 103 – Arrangement for measuring leakage current and electric strength of the

flexible part ........................................................................................................................... 40

Figure 104 – Arrangement for the three-thickness fold test ................................................... 41

Figure 105 – Examples showing the position of the thermal insulation on ruck-resistant

blankets and mattresses ....................................................................................................... 42

Figure 106 – Examples of folds and the position of the thermal insulation on pads .............. 43

Figure 107 – Tumbling barrel for testing the mechanical strength of pads ............................ 44

Figure 108 – Impact apparatus for testing enclosures of moisture-proof appliances .............. 45

Figure 109 – Shape of the sample for the tear resistance test ............................................... 46

Figure 110 – Equipment for flexing heating elements and internal wiring .............................. 46

Figure 111 – Arrangement for the rigidity test of ruck-resistant blankets ............................... 47

Figure 112 – Equipment for the spark ignition test ................................................................ 48

Figure 113 – Equipment for the spark ignition test – Details of the mask ............................... 49

Figure BB.1 – Equipment for the mechanical strength test of blankets .................................. 54

Figure BB.2 – Detail of the drum and cylinders ..................................................................... 55

Figure BB.3 – Detail of the clamping bar ............................................................................... 55

Table 101 – Maximum temperatures ..................................................................................... 17

Table 102 – Maximum temperature rises............................................................................... 17

Table A.101 – Test voltages ................................................................................................. 50

---------------------- Page: 5 ----------------------
– 4 – 60335-2-17 © IEC:2012
INTERNATIONAL ELECTROTECHNICAL COMMISSION
___________
HOUSEHOLD AND SIMILAR ELECTRICAL APPLIANCES –
SAFETY –
Part 2-17: Particular requirements for blankets, pads,
clothing and similar flexible heating appliances
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.

This part of International Standard IEC 60335 has been prepared by IEC technical committee 61:

Safety of household and similar electrical appliances.

This third edition cancels and replaces the second edition published in 2002 including its

Amendment 1 (2006) and its Amendment 2 (2008). It constitutes a technical revision.

The principal changes in this edition as compared with the second edition are as follows

(minor changes are not listed):

– The definition of PTC heating element has been deleted and the definition in Part 1 now

applies. A definition of a heating element with PTC characteristics has been introduced

instead (3.117). This has resulted in editorial changes to 5.7, 5.8.2, 7.1, 10.101, 11.2,

21.105, 21.111.1 and 21.112.

– The allowance for class I appliances has been deleted and requirements for appliances

incorporating a functional earth have been incorporated (6.1, 7.1, 22.115).
---------------------- Page: 6 ----------------------
60335-2-17 © IEC:2012 – 5 –

– The working voltage of parts of class III construction is limited to 24 V (22.26).

– Some notes have been deleted or converted to normative text (3.107, 3.111, 3.113, 5.2,

5.3, 5.8.2, 11.8, 11.101, 11.102, 15.1, 15.101, 19.1, 19.13, 19.102, 19.103, 19.105,

19.106, 19.108, 19.109, 19.110, 19.111, 19.112, 21.1, 21.102, 21.103, 21.109, 21.110.3,

21.111.1, 21.111.2, 21.111.3, 21.112, 22.103, 22.114, 25.23, Annex AA, Annex CC 3.1.9,

19.201, 19.203).
– Modification of the marking requirements (7.1, 7.14, 7.15).
– Modification of the instructions (7.12).
– Clarification of the heat stroke test (11.101).

– The figure numbers have been updated to take into account deletion of Figure 103 in the

previous edition.
The text of this standard is based on the following documents:
FDIS Report on voting
61/4336/FDIS 61/4352/RVD

Full information on the voting for the approval of this standard can be found in the report on

voting indicated in the above table.

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

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 blankets, pads,

clothing and similar flexible heating appliances.

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.
---------------------- Page: 7 ----------------------
– 6 – 60335-2-17 © IEC:2012

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.

The committee has decided that the contents of this publication will remain unchanged until

the stability date indicated on the IEC web site under "http://webstore.iec.ch" in the data

related to the specific publication. At this date, the publication 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.

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.
– 6.1: Class 0 products are allowed (Japan and USA).
– Annex AA: Felt is used for the thermal insulation (USA).
---------------------- Page: 8 ----------------------
60335-2-17 © IEC:2012 – 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 that 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 – 60335-2-17 © IEC:2012
HOUSEHOLD AND SIMILAR ELECTRICAL APPLIANCES –
SAFETY –
Part 2-17: Particular requirements for blankets, pads,
clothing and similar flexible heating appliances
1 Scope
This clause of Part 1 is replaced by the following.

This International Standard deals with the safety of electric blankets, pads, clothing and

other flexible appliances that heat the bed or human body, for household and similar

purposes, their rated voltage being not more than 250 V.
This standard also applies to control units supplied with the appliance.

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 in beauty parlours or by persons

in cold ambient temperatures, are within the scope of this standard.
Requirements and tests for clothing are given in Annex CC.

As far as is practicable, this standard deals with the common hazards presented by

appliances that are encountered by all persons in and around the home. However, in general,

it does not take into account
– persons (including children) whose
• physical, sensory or mental capabilities; or
• lack of experience and knowledge prevents them from using the appliance safely
without supervision or instruction;
– children playing with the appliance.

NOTE 101 Children are considered to be old enough to use an appliance without supervision when they have

been adequately instructed by a parent or guardian and are deemed competent to use the appliance safely.

NOTE 102 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 and similar authorities.
NOTE 103 This standard does not apply to

– 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);
– rigid bed warmers, such as those of metal or ceramic material;
– water bed heaters (IEC 60335-2-66);
– heating appliances for breeding and rearing animals (IEC 60335-2-71);
– foot warmers and heating mats (IEC 60335-2-81);

– appliances specifically intended for use under medical supervision (IEC 60601-2-35).

---------------------- Page: 10 ----------------------
60335-2-17 © IEC:2012 – 9 –
2 Normative references
This clause of Part 1 is applicable except as follows.
Addition:

IEC 60320-1:2001, Appliance couplers for household and similar general purposes – Part 1:

General requirements
Amendment 1 (2007)

ISO 2439, Flexible cellular polymeric materials – Determination of hardness (indentation

technique)
ISO 3758:2005, Textiles – Care labelling code using symbols
ISO/IEC Guide 37, Instructions for use of products of consumer interest
3 Terms and definitions
This clause of Part 1 is applicable except as follows.
3.1.9 Replacement:
normal operation
operation of the appliance under the following conditions:
– blankets and pads are placed between sheets of thermal insulation;
– duvets are placed on a sheet of thermal insulation but not covered;
– mattresses are covered by a sheet of thermal insulation
NOTE 101 The specification for the thermal insulation is given in Annex AA.

The flexible part is supported on a plywood base 20 mm thick and positioned not less than

300 mm above the floor. The size of the plywood base is such that the thermal insulation can

be fully supported over its entire area. The size of the sheets of thermal insulation is such that

the edges extend at least 100 mm beyond the outline of the heated area.

Control units held in the hand when they are actuated and cord switches are positioned to

hang away from the plywood base. Other control units are placed on a supporting surface

away from the plywood base.
3.101
flexible part

all layers of material forming the permanent enclosure of the appliance together with the

heating element, thermostats and all other current-carrying parts contained within it

Note 1 to entry: The flexible part may be inside a detachable cover.
3.102
blanket

appliance comprising a substantially flat flexible part that is intended to form part of the

bedding, for heating the bed
___________

There exists a consolidated edition 2.1 (2007) that includes edition 2 and its Amendment 1.

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3.103
underblanket
blanket intended to be used under the occupant of the bed
3.104
ruck-resistant blanket

underblanket that has sufficient rigidity to prevent rucking of the flexible part

3.105
overblanket
blanket intended to be used over the occupant of the bed
3.106
duvet

quilted overblanket intended to be used without additional bedding over the occupant of the

bed, the heating element providing supplementary heat
3.107
pad

appliance comprising a flexible part having a heated area not exceeding 0,3 m on each face

and which is intended to heat part of the human body
If th
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