IEC 60335-2-17:2012
(Main)Household and similar electrical appliances - Safety - Part 2-17: Particular requirements for blankets, pads, clothing and similar flexible heating appliances
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
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Standards Content (Sample)
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
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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
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
XA
CODE PRIX
ICS 13.120; 97.040.50 ISBN 978-2-8322-0040-7
– 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
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
– 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).
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.
– 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).
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.
– 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).
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.
– 10 – 60335-2-17 © IEC:2012
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 the pad is constructed in a cylindrical or similar form, the limit for the heated area is 0,6 m .
3.108
mattress
appliance for supporting the bedding and which incorporates an upholstered flexible part for
heating the bed
3.109
controlled appliance
appliance incorporating means in the flexible part, such as heating elements with PTC
characteristics or other means, for sensing changes in temperature when the appliance is
operated under normal operation, thus automatically controlling the average power input
3.110
heating element
heating conductor, including the core on which it is wound and the insulation, together with
any other integrated conductor
3.111
heated area
area of the flexible part enclosed within the outer perimeter of the heating element or
electro-conductive textile
It includes a margin outside the perimeter that has a width equal to 0,5 times the average
distance between adjacent runs of the heating element.
The heated area includes the return length of the heating element if the average distance
between this part and the adjacent heating element does not exceed the average distance
between adjacent runs of the heating element.
If a blanket or mattress has two separate heated areas, the surface between the two areas
is considered to be part of the heated areas, if at any place the distance between the two
heating elements does not exceed 1,5 times the average distance between adjacent runs of
the heating element.
60335-2-17 © IEC:2012 – 11 –
3.112
moisture-proof appliance
appliance having a flexible part that is suitable for use under moist conditions
3.113
bonded enclosure
enclosure of the flexible part that has the opposite faces joined together by means of an
adhesive or by welding
3.114
control unit
device, other than a multi-position cord switch, that does not incorporate components for
regulating the power input, external to the flexible part, by means of which the average
power input of the appliance can be adjusted or regulated
Note 1 to entry: Control units may be incorporated in the supply cord or at the end of an interconnection cord.
3.115
wrap
appliance comprising a flexible part intended to be draped over the human body in order to
keep it warm
3.116
electro-conductive textile
textile incorporating carbon or other conductive material for the purpose of providing a
uniformly heated surface
3.117
heating element with PTC characteristics
heating element consisting of a pair of conductors separated by conductive material that has
a rapid non-linear increase in resistance when the temperature is raised through a particular
range
4 General requirement
This clause of Part 1 is applicable.
5 General conditions for the tests
This clause of Part 1 is applicable except as follows.
5.2 Modification:
The tests are carried out on two appliances, identified as appliance A and appliance B.
Addition:
If a further appliance is required in order to continue testing after a test of Clause 19, it shall
be adequately preconditioned taking into account 21.102 to 21.107.
For appliances having a bonded enclosure, additional appliances are required for the tests
of 21.108 and 21.111. For other appliances, a length of 15 m of heating element is required
for the tests of 21.111.
For moisture-proof pads subjected to the tests of 21.110, five additional appliances and
1 m of enclosure material are required.
– 12 – 60335-2-17 © IEC:2012
If heat-shrink material is used to insulate connections in the flexible part, a sample at least
150 mm in length is required for the test of 30.102.
An additional appliance may be required for the test of 19.112.
Additional samples of pads may be required for the test of 30.101.
5.3 Replacement:
The order in which the tests are carried out is as follows:
Appliance A: 7, 22.11, 8, 22.112, 10, 21.102 to 21.107, 22.108, 13, 15, 16, 17, 20, 25.15,
25.16, 19 (except 19.111), 21.108, 22.18, 30, 31 and 32.
Appliance B: 10, 11, 19.111, 21 (remainder), 22 (remainder), 23, 24, 25 (remainder), 26, 27,
28, 29 and 14.
The flexible part of washable appliances is laundered twice in accordance with the
instructions before testing is started.
If it is evident from the construction of the appliance that a particular test is not applicable, the
test is not carried out.
5.5 Addition:
If the flexible part of the appliance is provided with a detachable cover, the tests are carried
out with or without this cover, whichever is more unfavourable. However, duvets are tested
without a detachable cover.
If the heating element can move in the channels, it is manipulated so that the individual runs
are placed in the most unfavourable position.
5.6 Addition:
When testing appliances for d.c. only, the possible influence of polarity on the operation of the
appliance is taken into account.
5.7 Modification:
For flexible parts incorporating heating elements with PTC characteristics, the tests of
Clauses 10, 11 and 19 are carried out at the most unfavourable ambient temperature within
the range of 0 °C to 25 °C.
For other controlled blankets and mattresses, the tests of Clauses 10, 11 and 19 are
carried out at the most unfavourable ambient temperature within the range of 0 °C to 15 °C.
5.8.1 Addition:
Appliances for d.c. only are tested with d.c.
5.8.101 Controlled appliances are supplied as specified for motor-operated appliances.
5.12 Modification:
In the note, replace “25 %” by “10 %”.
60335-2-17 © IEC:2012 – 13 –
5.101 Duvets and wraps are tested as overblankets.
6 Classification
This clause of Part 1 is applicable except as follows.
6.1 Modification:
Appliances shall be class II or class III. Class III appliances shall have a rated voltage not
exceeding 24 V.
7 Marking and instructions
This clause of Part 1 is applicable except as follows.
7.1 Modification:
Appliances shall be marked with the rated power input.
Parts of class III construction shall not be marked with the rated voltage of the appliance.
Addition:
Flexible parts and detachable covers shall be marked with the name, trademark or
identification mark of the manufacturer or responsible vendor.
Detachable covers shall be marked with the model or type reference of the appliance with
which they are intended to be used.
The flexible part of appliances to be used with a detachable control unit shall be marked
with the reference of the control unit to be used.
The flexible part of appliances to be used with a detachable transformer shall be marked
with the reference of the transformer to be used.
Flexible parts shall be marked with the substance of the following:
– symbol ISO 7000-0790 (2004-01), or by the text ‘read the instructions’;
– the symbol shown in Figure 102, or by the text ‘do not insert pins’;
– the symbol ‘Not to be used by very young children (0-3 years)’, or by similar text;
– intended orientation of blankets and mattresses (this marking is not required if the
appliance complies with 11.101, whichever way it is placed on the bed).
Underblankets, other than those having a heating element with PTC characteristics, shall
be marked with the symbol shown in Figure 101 or by the text ‘do not use folded or rucked’.
Detachable covers shall be marked with the following:
• symbol ISO 7000-0790 (2004-01);
• symbol of Figure 102.
The flexible part of blankets and detachable covers shall be marked with the appropriate
laundering symbols specified in ISO 3758. Washable appliances fitted with a non-detachable
flexible cord shall be marked with the “hand wash” symbol specified in Table 1 of ISO 3758.
– 14 – 60335-2-17 © IEC:2012
Non-washable appliances shall be marked with the “do not wash” symbol in Table 1 of
ISO 3758.
Appliances incorporating a functional earth shall be marked with symbol IEC 60417-5018
(2006-10).
7.6 Addition:
[symbol from Table 1 of ISO 3758] hand wash
[symbol from Table 1 of ISO 3758] do not wash
[Not to be used by very young children (0-3 years)]
7.12 Addition:
The instructions shall contain the substance of the following:
Important instructions. Retain for future use.
The instructions shall contain the substance of the marking required in 7.1. When symbols are
used, they shall be explained.
The instructions for blankets shall state whether the appliance is an overblanket or an
underblanket.
The instructions for underblankets, other than blankets having a ruck-resistance greater
than 1,2 as determined in 22.106, shall state how the blanket is to be secured to the bed.
The instructions shall specify the appropriate settings of controls for continuous use of the
appliance.
The instructions for pads shall state that when the appliance is likely to be used for an
extended period, for instance by the user falling asleep, controls should be adjusted to a
setting recommended for continuous use.
The instructions for appliances provided with detachable control units or detachable
transformers shall state that the appliance is only to be used with the types that are marked
on the appliance.
The instructions for duvets shall state the length and width of the detachable cover to be
used.
The instructions shall state the substance of the following:
– when not in use, store as follows (quote necessary instructions);
– when storing the appliance, allow it to cool down before folding;
– do not crease the appliance by placing items on top of it during storage (for blankets and
pads only);
– examine the appliance frequently for signs of wear or damage. If there are such signs, if
the appliance has been misused or does not work, return it to the supplier before
switching it on again;
– this appliance is not intended for medical use in hospitals;
60335-2-17 © IEC:2012 – 15 –
– do not use if wet (this instruction is not required for moisture-proof appliances or
Class III appliances);
– this appliance must not be used by persons insensitive to heat and other very vulnerable
persons who are unable to react to overheating;
– children under the age of three are not to use this appliance due to their inability to react
to overheating.
The instructions for underblankets shall state the substance of the following:
– the appliance should not be used on an adjustable bed; or
– if the appliance is used on an adjustable bed, check that the blanket and cord do not
become trapped or rucked, for example in hinges.
The instructions shall state that the appliance is not to be used by young children over the
age of three unless the controls have been pre-set by a parent or guardian, or unless the child
has been adequately instructed on how to operate the controls safely.
The instructions for washable appliances fitted with a non-detachable cord shall state that
the switch or control unit must not be allowed to get wet during washing and that during drying
the cord must be positioned to ensure that water does not flow into the switch or control.
The instructions for non-washable appliances shall state how they can be cleaned, for
example with a damp sponge.
7.14 Modification:
Instead of petroleum spirit, liquid detergent is used to check the marking on flexible parts
and detachable covers.
Addition:
The height of the lettering on the flexible part shall be at least 2,5 mm.
The height of the symbols shown in Figure 101, Figure 102 and the symbol ‘not to be used by
very young children (0-3 years)’ shall be at least 15 mm.
The height of the words "Important instructions” and ”Retain for future use" shall be at least
4 mm.
Compliance is checked by measurement in accordance with ISO/IEC Guide 37.
7.15 Addition:
The symbols required to be marked on detachable covers shall be visible from the outside
after the cover has been fitted.
Symbol IEC 60417-5018 (2006-10) shall be placed next to symbol IEC 60417-5172 (2003-02)
or symbol IEC 60417-5180 (2003-02), as appropriate.
7.101 Detachable control units shall be marked with a reference number or by other
means of identification.
Compliance is checked by inspection.
– 16 – 60335-2-17 © IEC:2012
8 Protection against access to live parts
This clause of Part 1 is applicable.
9 Starting of motor-operated appliances
This clause of Part 1 is not applicable.
10 Power input and current
This clause of Part 1 is applicable except as follows.
10.1 Modification:
The negative deviation in Table 1 is increased to 20 %.
10.101 The power input of appliances incorporating heating elements with PTC
characteristics shall significantly decrease with an increase in temperature.
Compliance is checked by the following test.
The appliance is supplied at rated voltage and operated under normal operation. The power
input shall have decreased by at least 50 % from the initial value when steady conditions are
established, any control operating during this period being short-circuited.
11 Heating
This clause of Part 1 is applicable except as follows.
11.2 Modification:
The plywood base is placed away from the walls of the test corner.
Addition:
Underblankets having the length of their longest side less than 1 m and duvets, other than
those having heating elements with PTC characteristics, are also tested folded. A single
fold across the complete width of the duvet is made at a quarter of the length from one end.
Controls are adjusted to the highest setting intended for continuous use.
Wraps are also tested folded. A single fold is made across the flexible part in the most
unfavourable place.
11.3 Addition:
Thermocouples used for determining the temperature of heating elements, or sheaths
containing them, are attached with textile thread over a length of at least 10 mm.
Thermocouples used for determining the temperature of the surface of electro-conductive
textiles are attached to the centre of brass or copper plates measuring
65 mm × 65 mm × 0,5 mm. The plates are coated with insulating lacquer.
60335-2-17 © IEC:2012 – 17 –
Thermocouples used for determining the temperature of the surface of pads are attached to
plates of copper or brass measuring 65 mm × 65 mm × 0,5 mm. The plates are positioned to
cover as many heating element runs as possible, with one side parallel to the direction of the
run. The temperatures are determined at not less than six places, three on each outer surface
of the flexible part.
11.4 Addition:
Appliances having a flexible part of class III construction are supplied with the most
unfavourable voltage between 0,94 and 1,06 times rated voltage.
11.7 Replacement:
Applia
...
IEC 60335-2-17 ®
Edition 3.2 2019-03
CONSOLIDATED VERSION
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
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
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IEC 60335-2-17 ®
Edition 3.2 2019-03
CONSOLIDATED VERSION
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
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
INTERNATIONALE
ICS 13.120; 97.040.50 ISBN 978-2-8322-6731-8
IEC 60335-2-17 ®
Edition 3.2 2019-03
CONSOLIDATED VERSION
REDLINE VERSION
VERSION REDLINE
colour
inside
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
– 2 – IEC 60335-2-17:2012+AMD1:2015
+AMD2:2019 CSV © IEC 2015
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 . 17
12 Void. 19
13 Leakage current and electric strength at operating temperature . 19
14 Transient overvoltages . 20
15 Moisture resistance . 20
16 Leakage current and electric strength . 21
17 Overload protection of transformers and associated circuits . 22
18 Endurance . 22
19 Abnormal operation . 22
20 Stability and mechanical hazards . 26
21 Mechanical strength . 26
22 Construction . 34
23 Internal wiring . 37
24 Components . 37
25 Supply connection and external flexible cords . 37
26 Terminals for external conductors . 38
27 Provision for earthing . 39
28 Screws and connections . 39
29 Clearances, creepage distances and solid insulation . 39
30 Resistance to heat and fire . 39
31 Resistance to rusting . 41
32 Radiation, toxicity and similar hazards . 42
Annexes . 54
Annex A (informative) Routine tests . 54
Annex AA (normative) Specification for the thermal insulation . 56
Annex BB (normative) Equipment for the mechanical strength test for blankets . 57
Annex CC (normative) Clothing . 60
Bibliography . 63
+AMD2:2019 CSV © IEC 2015
Figure 101 – Symbol for "Do not use folded or rucked" . 42
Figure 102 – Symbol for "Do not insert pins" . 42
Figure 103 – Arrangement for measuring leakage current and electric strength of the
flexible part . 43
Figure 104 – Void . 44
Figure 105 – Void . 45
Figure 106 – Void . 46
Figure 107 – Tumbling barrel for testing the mechanical strength of pads . 47
Figure 108 – Impact apparatus for testing enclosures of moisture-proof appliances . 48
Figure 109 – Shape of the sample for the tear resistance test . 49
Figure 110 – Equipment for flexing heating elements and internal wirin . 49
Figure 111 – Void . 50
Figure 112 – Equipment for the spark ignition test . 51
Figure 113 – Equipment for the spark ignition test – Details of the mask . 52
Figure 114 – Shape of the test piece for the tensile test . 53
Figure BB.1 – Equipment for the mechanical strength test of blankets . 58
Figure BB.2 – Detail of the drum and cylinders . 59
Figure BB.3 – Detail of the clamping bar . 59
Table 101 – Maximum temperatures . 18
Table 102 – Maximum temperature rises. 18
Table A.101 – Test voltages . 54
– 4 – IEC 60335-2-17:2012+AMD1:2015
+AMD2:2019 CSV © IEC 2015
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 consolidated version of the official IEC Standard and its amendments has been prepared
for user convenience.
IEC 60335-2-17 edition 3.2 contains the third edition (2012-03) [documents 61/4336/FDIS and
61/4352/RVD], its amendment 1 (2015-07) [documents 61/4834/CDV and 61/4910/RVC] and its
amendment 2 (2019-03) [documents 61/5756/FDIS and 61/5795/RVD].
In this Redline version, a vertical line in the margin shows where the technical
content is modified by amendments 1 and 2. Additions and deletions are displayed in
red, with deletions being struck through. A separate Final version with all changes
accepted is available in this publication.
+AMD2:2019 CSV © IEC 2015
This part of International Standard IEC 60335 has been prepared by IEC technical committee 61:
Safety of household and similar electrical appliances.
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.
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.
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.
– 6 – IEC 60335-2-17:2012+AMD1:2015
+AMD2:2019 CSV © IEC 2015
The committee has decided that the contents of the base publication and its amendments 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).
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.
+AMD2:2019 CSV © IEC 2015
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.
– 8 – IEC 60335-2-17:2012+AMD1:2015
+AMD2:2019 CSV © IEC 2015
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).
+AMD2:2019 CSV © IEC 2015
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 7000:2014, Graphical symbols for use on equipment – Registered 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, electro-conductive textile, thermostats and all other current-carrying
parts contained within it
Note 1 to entry: The flexible part may be inside a detachable cover.
___________
There exists a consolidated edition 2.1 (2007) that includes edition 2 and its Amendment 1.
– 10 – IEC 60335-2-17:2012+AMD1:2015
+AMD2:2019 CSV © IEC 2015
3.102
blanket
appliance comprising a substantially flat flexible part that is intended to form part of the
bedding, for heating the bed
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
Void
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, electro-conductive textile, 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 the pad is constructed in a cylindrical or similar form, the limit for the heated area is 0,6 m .
3.108
mattress
appliance for supporting the bedding human body and which incorporates an upholstered
flexible part for heating the bed
Note 1 to entry: The appliance may be placed on the floor and referred to as a mat.
3.109
controlled appliance
appliance incorporating means in the flexible part, such as heating elements with PTC
characteristics or other means, for sensing changes in temperature when the appliance is
operated under normal operation, thus automatically controlling the average power input
3.110
heating element
heating conductor, including the core on which it is wound and the insulation any core and
insulation, together with any other integrated conductor
3.111
heated area
area of the flexible part enclosed within the outer perimeter of the heating element or
electro-conductive textile
It includes a margin outside the perimeter that has a width equal to 0,5 times the average
distance between adjacent runs of the heating element.
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The heated area includes the return length of the heating element if the average distance
between this part and the adjacent heating element does not exceed the average distance
between adjacent runs of the heating element.
If a blanket or mattress has two separate heated areas, the surface between the two areas
is considered to be part of the heated areas, if at any place the distance between the two
heating elements does not exceed 1,5 times the average distance between adjacent runs of
the heating element.
3.112
moisture-proof appliance
appliance having a flexible part that is suitable for use under moist conditions
3.113
bonded enclosure
enclosure of the flexible part that has the opposite faces joined together by means of an
adhesive or by welding
3.114
control unit
device, other than a multi-position cord switch, that does not incorporate components for
regulating the power input, external to the flexible part, by means of which the average
power input of the appliance can be adjusted or regulated
Note 1 to entry: Control units may be incorporated in the supply cord or at the end of an interconnection cord.
3.115
wrap
appliance comprising a flexible part intended to be draped over the human body in order to
keep it warm
3.116
electro-conductive textile
textile material incorporating carbon or other conductive material substance, together with any
associated insulation, which is connected to a pair of electrodes for the purpose of providing a
uniformly heated surface
3.117
heating element with PTC characteristics
heating element consisting of a pair of conductors separated by conductive material that has
a rapid non-linear increase in resistance when the temperature is raised through a particular
range
4 General requirement
This clause of Part 1 is applicable.
5 General conditions for the tests
This clause of Part 1 is applicable except as follows.
5.2 Modification:
The tests are carried out on two appliances, identified as appliance A and appliance B.
Addition:
– 12 – IEC 60335-2-17:2012+AMD1:2015
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If a further appliance is required in order to continue testing after a test of Clause 19, it shall
be adequately preconditioned taking into account 21.102 to 21.107.
For appliances having a bonded enclosure, additional appliances are required for the tests
of 21.108 and 21.111. For other appliances, a length of 15 m of heating element is required
for the tests of 21.111.
For moisture-proof pads subjected to the tests of 21.110, five additional appliances and
1 m of enclosure material are required.
If heat-shrink material is used to insulate connections in the flexible part, a sample at least
150 mm in length is required for the test of 30.102.
An additional appliance may be required for the test of 19.112.
Additional samples of pads may be required for the test of 30.101.
For appliances having a flexible part incorporating electro-conductive textile and a
working voltage above 24 V, an additional sample may be required for the test of 21.113.2
and a 1 m length of sheet insulation will be required for the test of 21.113.1.
5.3 Replacement:
The order in which the tests are carried out is as follows:
Appliance A: 7, 22.11, 8, 22.112, 10, 21.102 to 21.107, 22.108, 13, 15, 16, 17, 20, 25.15,
25.16, 19 (except 19.111), 21.108, 22.18, 30, 31 and 32. The tests of Clauses 13, 15 and 16
are not carried out on class III appliances having a rated voltage not exceeding 24 V or on
class III constructions having a working voltage not exceeding 24 V.
Appliance B: 10, 11, 19.111, 21 (remainder), 22 (remainder), 23, 24, 25 (remainder), 26, 27,
28, 29 and 14.
The flexible part of washable appliances is laundered twice in accordance with the
instructions before testing is started.
If it is evident from the construction of the appliance that a particular test is not applicable, the
test is not carried out.
5.5 Addition:
If the flexible part of the appliance is provided with a detachable cover, the tests are carried
out with or without this cover, whichever is more unfavourable. However, duvets are tested
without a detachable cover.
If the construction of a mattress incorporates a separate flexible part that is detachable, the
detachable flexible part is tested as an underblanket.
If the heating element can move in the channels, it is manipulated so that the individual runs
are placed in the most unfavourable position.
5.6 Addition:
When testing appliances for d.c. only, the possible influence of polarity on the operation of the
appliance is taken into account.
+AMD2:2019 CSV © IEC 2015
5.7 Modification:
For flexible parts incorporating heating elements with PTC characteristics, the tests of
Clauses 10, 11 and 19 are carried out at the most unfavourable ambient temperature within
the range of 0 °C to 25 °C.
For other controlled blankets and mattresses, the tests of Clauses 10, 11 and 19 are
carried out at the most unfavourable an ambient temperature within the range of 0 °C to 15 °C
± 5 °C.
5.8.1 Addition:
Appliances for d.c. only are tested with d.c.
5.8.101 Controlled appliances are supplied as specified for motor-operated appliances.
5.12 Modification:
In the note, replace “25 %” by “10 %”.
5.101 Duvets and wraps are tested as overblankets.
6 Classification
This clause of Part 1 is applicable except as follows.
6.1 Modification:
Appliances shall be class II or class III. Class III appliances shall have a rated voltage not
exceeding 24 V.
7 Marking and instructions
This clause of Part 1 is applicable except as follows.
7.1 Modification:
Appliances shall be marked with the rated power input. If the appliance has two means of
connection to the supply, the rated power input shall be stated for each circuit separately and
the information provided on a single label.
The rated power input may be expressed as 2 x rated power input for each circuit in watts.
Other ways of expressing the rated power input may be used and the total given, provided
they do not give rise to misunderstanding.
Parts of class III construction shall not be marked with the rated voltage of the appliance.
Addition:
Flexible parts and detachable covers shall be marked with the name, trademark or
identification mark of the manufacturer or responsible vendor.
Detachable covers shall be marked with the model or type reference of the appliance with
which they are intended to be used.
– 14 – IEC 60335-2-17:2012+AMD1:2015
+AMD2:2019 CSV © IEC 2015
The flexible part of appliances to be used with a detachable control unit shall be marked
with the reference of the control unit to be used.
The flexible part of appliances to be used with a detachable transformer shall be marked
with the reference of the transformer to be used.
Flexible parts shall be marked with the substance of the following:
– symbol ISO 7000-0790 (2004-01), or by the text ‘read the instructions’;
– the symbol shown in Figure 102, or by the text ‘do not insert pins’;
– the symbol ‘Not to be used by very young children (0-3 years)’, or by similar text;
– symbol ISO 7000-3114 (2011-10) and symbol ISO 7000-3124 (2011-10);
– intended orientation of blankets and mattresses (this marking is not required if the
appliance complies with 11.101, whichever way it is placed on the bed).
Underblankets, other than those having a heating element with PTC characteristics, shall
be marked with the symbol shown in Figure 101 or by the text ‘do not use folded or rucked’.
Detachable covers shall be marked with the following:
• symbol ISO 7000-0790 (2004-01);
• symbol of Figure 102.
The flexible part of blankets and detachable covers shall be marked with the appropriate
laundering symbols specified in ISO 3758. Washable appliances fitted with a non-detachable
flexible cord shall be marked with the “hand wash” symbol specified in Table 1 of ISO 3758
symbol ISO 7000-3125 (2011-10). Non-washable appliances shall be marked with the “do not
wash” symbol in Table 1 of ISO 3758 symbol ISO 7000-3123 (2011-10).
Appliances incorporating a functional earth shall be marked with symbol IEC 60417-5018
(2006-10).
7.6 Addition:
[symbol ISO 7000-3114 (2011-10)] Do not dry clean
[symbol from Table 1 of ISO 3758 ISO 7000-3123
Do not wash
(2011-10)]
[symbol ISO 7000-3124 (2011-10)] Do not bleach
[symbol from Table 1 of ISO 3758 ISO 7000-3125
(2011-10)] Wash by hand
Not to be used by very young children (0-3 years)
7.12 Addition:
+AMD2:2019 CSV © IEC 2015
The instructions shall contain the substance of the following:
Important instructions. Retain for future use.
The instructions shall contain the substance of the marking required in 7.1. When the symbols
of Figure 101, Figure 102 or those in the addition to 7.6 are used, they shall be explained.
The instructions for blankets shall state whether the appliance is an overblanket or an
underblanket.
The instructions for underblankets, other than blankets having a ruck-resistance greater
than 1,2 as determined in 22.106, shall state how the blanket is to be secured to the bed.
The instructions shall specify the appropriate settings of controls for continuous use of the
appliance.
The instructions for pads shall state that when the appliance is likely to be used for an
extended period, for instance by the user falling asleep, controls should be adjusted to a
setting recommended for continuous use. The instructions for blankets and mattresses shall
state that if the appliance is slept on with the controls set to a higher temperature the user may
suffer skin burns or heat stroke.
The instructions for appliances provided with detachable control units or detachable
transformers shall state that the appliance is only to be used with the types that are marked
on the appliance.
The instructions for duvets shall state the length and width of the detachable cover to be
used.
The instructions shall state the substance of the following:
– when not in use, store as follows (quote necessary instructions);
– when storing the appliance, allow it to cool down before folding;
– do not crease the appliance by placing items on top of it during storage (for blankets and
pads only);
– examine the appliance frequently for signs of wear or damage. If there are such signs, if
the appliance has been misused or does not work, return it to the supplier before
switching it on again;
– this appliance is not intended for medical use in hospitals;
– do not use if wet (this instruction is not required for moisture-proof appliances or
Class III appliances);
– this appliance must not be used by persons insensitive to heat and other very vulnerable
persons who are unable to react t
...
IEC 60335-2-17 ®
Edition 3.1 2015-07
CONSOLIDATED VERSION
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
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
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IEC 60335-2-17 ®
Edition 3.1 2015-07
CONSOLIDATED VERSION
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
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
INTERNATIONALE
ICS 13.120, 97.040.50 ISBN 978-2-8322-2797-8
IEC 60335-2-17 ®
Edition 3.1 2015-07
CONSOLIDATED VERSION
REDLINE VERSION
VERSION REDLINE
colour
inside
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
– 2 – IEC 60335-2-17:2012+AMD1:2015 CSV
© IEC 2015
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 . 17
12 Void. 19
13 Leakage current and electric strength at operating temperature . 19
14 Transient overvoltages . 20
15 Moisture resistance . 20
16 Leakage current and electric strength . 21
17 Overload protection of transformers and associated circuits . 22
18 Endurance . 22
19 Abnormal operation . 22
20 Stability and mechanical hazards . 26
21 Mechanical strength . 26
22 Construction . 34
23 Internal wiring . 37
24 Components . 37
25 Supply connection and external flexible cords . 37
26 Terminals for external conductors . 38
27 Provision for earthing . 38
28 Screws and connections . 38
29 Clearances, creepage distances and solid insulation . 39
30 Resistance to heat and fire . 39
31 Resistance to rusting . 41
32 Radiation, toxicity and similar hazards . 41
Annexes . 54
Annex A (informative) Routine tests . 54
Annex AA (normative) Specification for the thermal insulation . 56
Annex BB (normative) Equipment for the mechanical strength test for blankets . 57
Annex CC (normative) Clothing . 60
Bibliography . 63
© IEC 2015
Figure 101 – Symbol for "Do not use folded or rucked" . 42
Figure 102 – Symbol for "Do not insert pins" . 42
Figure 103 – Arrangement for measuring leakage current and electric strength of the
flexible part . 43
Figure 104 – Void . 44
Figure 105 – Void . 45
Figure 106 – Void . 46
Figure 107 – Tumbling barrel for testing the mechanical strength of pads . 47
Figure 108 – Impact apparatus for testing enclosures of moisture-proof appliances . 48
Figure 109 – Shape of the sample for the tear resistance test . 49
Figure 110 – Equipment for flexing heating elements and internal wirin . 49
Figure 111 – Void . 50
Figure 112 – Equipment for the spark ignition test . 51
Figure 113 – Equipment for the spark ignition test – Details of the mask . 52
Figure 114 – Shape of the test piece for the tensile test . 53
Figure BB.1 – Equipment for the mechanical strength test of blankets . 58
Figure BB.2 – Detail of the drum and cylinders . 59
Figure BB.3 – Detail of the clamping bar . 59
Table 101 – Maximum temperatures . 18
Table 102 – Maximum temperature rises. 18
Table A.101 – Test voltages . 54
– 4 – IEC 60335-2-17:2012+AMD1:2015 CSV
© IEC 2015
INTERNATIONAL ELECTROTECHNICAL COMMISSION
___________
HOUSEHOLD AND SIMILAR ELECTRICAL APPLIANCES –
SAFETY –
Part 2-17: Particular requirements for blankets, pads,
clothing and similar flexible heating appliances
FOREWORD
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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 consolidated version of the official IEC Standard and its amendment has been prepared
for user convenience.
IEC 60335-2-17 edition 3.1 contains the third edition (2012-03) [documents 61/4336/FDIS and
61/4352/RVD] and its amendment 1 (2015-07) [documents 61/4834/CDV and 61/4910/RVC].
In this Redline version, a vertical line in the margin shows where the technical content is
modified by amendment 1. Additions and deletions are displayed in red, with deletions being
struck through. A separate Final version with all changes accepted is available in this
publication.
© IEC 2015
This part of International Standard IEC 60335 has been prepared by IEC technical committee 61:
Safety of household and similar electrical appliances.
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.
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.
– 6 – IEC 60335-2-17:2012+AMD1:2015 CSV
© IEC 2015
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 the base publication and its amendment 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).
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.
© IEC 2015
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.
– 8 – IEC 60335-2-17:2012+AMD1:2015 CSV
© IEC 2015
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).
© IEC 2015
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 7000:2014, Graphical symbols for use on equipment – Registered 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, electro-conductive textile, thermostats and all other current-carrying
parts contained within it
Note 1 to entry: The flexible part may be inside a detachable cover.
___________
There exists a consolidated edition 2.1 (2007) that includes edition 2 and its Amendment 1.
– 10 – IEC 60335-2-17:2012+AMD1:2015 CSV
© IEC 2015
3.102
blanket
appliance comprising a substantially flat flexible part that is intended to form part of the
bedding, for heating the bed
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
Void
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, electro-conductive textile, 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 the pad is constructed in a cylindrical or similar form, the limit for the heated area is 0,6 m .
3.108
mattress
appliance for supporting the bedding human body and which incorporates an upholstered
flexible part for heating the bed
Note 1 to entry: The appliance may be placed on the floor and referred to as a mat.
3.109
controlled appliance
appliance incorporating means in the flexible part, such as heating elements with PTC
characteristics or other means, for sensing changes in temperature when the appliance is
operated under normal operation, thus automatically controlling the average power input
3.110
heating element
heating conductor, including the core on which it is wound and the insulation any core and
insulation, together with any other integrated conductor
3.111
heated area
area of the flexible part enclosed within the outer perimeter of the heating element or
electro-conductive textile
It includes a margin outside the perimeter that has a width equal to 0,5 times the average
distance between adjacent runs of the heating element.
© IEC 2015
The heated area includes the return length of the heating element if the average distance
between this part and the adjacent heating element does not exceed the average distance
between adjacent runs of the heating element.
If a blanket or mattress has two separate heated areas, the surface between the two areas
is considered to be part of the heated areas, if at any place the distance between the two
heating elements does not exceed 1,5 times the average distance between adjacent runs of
the heating element.
3.112
moisture-proof appliance
appliance having a flexible part that is suitable for use under moist conditions
3.113
bonded enclosure
enclosure of the flexible part that has the opposite faces joined together by means of an
adhesive or by welding
3.114
control unit
device, other than a multi-position cord switch, that does not incorporate components for
regulating the power input, external to the flexible part, by means of which the average
power input of the appliance can be adjusted or regulated
Note 1 to entry: Control units may be incorporated in the supply cord or at the end of an interconnection cord.
3.115
wrap
appliance comprising a flexible part intended to be draped over the human body in order to
keep it warm
3.116
electro-conductive textile
textile material incorporating carbon or other conductive material substance, together with any
associated insulation, which is connected to a pair of electrodes for the purpose of providing a
uniformly heated surface
3.117
heating element with PTC characteristics
heating element consisting of a pair of conductors separated by conductive material that has
a rapid non-linear increase in resistance when the temperature is raised through a particular
range
4 General requirement
This clause of Part 1 is applicable.
5 General conditions for the tests
This clause of Part 1 is applicable except as follows.
5.2 Modification:
The tests are carried out on two appliances, identified as appliance A and appliance B.
Addition:
– 12 – IEC 60335-2-17:2012+AMD1:2015 CSV
© IEC 2015
If a further appliance is required in order to continue testing after a test of Clause 19, it shall
be adequately preconditioned taking into account 21.102 to 21.107.
For appliances having a bonded enclosure, additional appliances are required for the tests
of 21.108 and 21.111. For other appliances, a length of 15 m of heating element is required
for the tests of 21.111.
For moisture-proof pads subjected to the tests of 21.110, five additional appliances and
1 m of enclosure material are required.
If heat-shrink material is used to insulate connections in the flexible part, a sample at least
150 mm in length is required for the test of 30.102.
An additional appliance may be required for the test of 19.112.
Additional samples of pads may be required for the test of 30.101.
For appliances having a flexible part incorporating electro-conductive textile and a
working voltage above 24 V, an additional sample may be required for the test of 21.113.2
and a 1 m length of sheet insulation will be required for the test of 21.113.1.
5.3 Replacement:
The order in which the tests are carried out is as follows:
Appliance A: 7, 22.11, 8, 22.112, 10, 21.102 to 21.107, 22.108, 13, 15, 16, 17, 20, 25.15,
25.16, 19 (except 19.111), 21.108, 22.18, 30, 31 and 32. The tests of Clauses 13, 15 and 16
are not carried out on class III appliances having a rated voltage not exceeding 24 V or on
class III constructions having a working voltage not exceeding 24 V.
Appliance B: 10, 11, 19.111, 21 (remainder), 22 (remainder), 23, 24, 25 (remainder), 26, 27,
28, 29 and 14.
The flexible part of washable appliances is laundered twice in accordance with the
instructions before testing is started.
If it is evident from the construction of the appliance that a particular test is not applicable, the
test is not carried out.
5.5 Addition:
If the flexible part of the appliance is provided with a detachable cover, the tests are carried
out with or without this cover, whichever is more unfavourable. However, duvets are tested
without a detachable cover.
If the construction of a mattress incorporates a separate flexible part that is detachable, the
detachable flexible part is tested as an underblanket.
If the heating element can move in the channels, it is manipulated so that the individual runs
are placed in the most unfavourable position.
5.6 Addition:
When testing appliances for d.c. only, the possible influence of polarity on the operation of the
appliance is taken into account.
© IEC 2015
5.7 Modification:
For flexible parts incorporating heating elements with PTC characteristics, the tests of
Clauses 10, 11 and 19 are carried out at the most unfavourable ambient temperature within
the range of 0 °C to 25 °C.
For other controlled blankets and mattresses, the tests of Clauses 10, 11 and 19 are
carried out at the most unfavourable ambient temperature within the range of 0 °C to 15 °C.
5.8.1 Addition:
Appliances for d.c. only are tested with d.c.
5.8.101 Controlled appliances are supplied as specified for motor-operated appliances.
5.12 Modification:
In the note, replace “25 %” by “10 %”.
5.101 Duvets and wraps are tested as overblankets.
6 Classification
This clause of Part 1 is applicable except as follows.
6.1 Modification:
Appliances shall be class II or class III. Class III appliances shall have a rated voltage not
exceeding 24 V.
7 Marking and instructions
This clause of Part 1 is applicable except as follows.
7.1 Modification:
Appliances shall be marked with the rated power input.
Parts of class III construction shall not be marked with the rated voltage of the appliance.
Addition:
Flexible parts and detachable covers shall be marked with the name, trademark or
identification mark of the manufacturer or responsible vendor.
Detachable covers shall be marked with the model or type reference of the appliance with
which they are intended to be used.
The flexible part of appliances to be used with a detachable control unit shall be marked
with the reference of the control unit to be used.
The flexible part of appliances to be used with a detachable transformer shall be marked
with the reference of the transformer to be used.
– 14 – IEC 60335-2-17:2012+AMD1:2015 CSV
© IEC 2015
Flexible parts shall be marked with the substance of the following:
– symbol ISO 7000-0790 (2004-01), or by the text ‘read the instructions’;
– the symbol shown in Figure 102, or by the text ‘do not insert pins’;
– the symbol ‘Not to be used by very young children (0-3 years)’, or by similar text;
– symbol ISO 7000-3114 (2012-04) and symbol ISO 7000-3124 (2012-04);
– intended orientation of blankets and mattresses (this marking is not required if the
appliance complies with 11.101, whichever way it is placed on the bed).
Underblankets, other than those having a heating element with PTC characteristics, shall
be marked with the symbol shown in Figure 101 or by the text ‘do not use folded or rucked’.
Detachable covers shall be marked with the following:
• symbol ISO 7000-0790 (2004-01);
• symbol of Figure 102.
The flexible part of blankets and detachable covers shall be marked with the appropriate
laundering symbols specified in ISO 3758. Washable appliances fitted with a non-detachable
flexible cord shall be marked with the “hand wash” symbol specified in Table 1 of ISO 3758.
Non-washable appliances shall be marked with the “do not wash” symbol in Table 1 of
ISO 3758.
Appliances incorporating a functional earth shall be marked with symbol IEC 60417-5018
(2006-10).
7.6 Addition:
[symbol ISO 7000-3114 (2012-04)] Do not dry clean
[symbol from Table 1 of ISO 3758 ISO 7000-3123
Do not wash
(2012-04)]
[symbol ISO 7000-3124 (2012-04)] Do not bleach
[symbol from Table 1 of ISO 3758 ISO 7000-3125
(2012-04)] Wash by hand
Not to be used by very young children (0-3 years)
7.12 Addition:
The instructions shall contain the substance of the following:
Important instructions. Retain for future use.
© IEC 2015
The instructions shall contain the substance of the marking required in 7.1. When the symbols
of Figure 101, Figure 102 or those in the addition to 7.6 are used, they shall be explained.
The instructions for blankets shall state whether the appliance is an overblanket or an
underblanket.
The instructions for underblankets, other than blankets having a ruck-resistance greater
than 1,2 as determined in 22.106, shall state how the blanket is to be secured to the bed.
The instructions shall specify the appropriate settings of controls for continuous use of the
appliance.
The instructions for pads shall state that when the appliance is likely to be used for an
extended period, for instance by the user falling asleep, controls should be adjusted to a
setting recommended for continuous use.
The instructions for appliances provided with detachable control units or detachable
transformers shall state that the appliance is only to be used with the types that are marked
on the appliance.
The instructions for duvets shall state the length and width of the detachable cover to be
used.
The instructions shall state the substance of the following:
– when not in use, store as follows (quote necessary instructions);
– when storing the appliance, allow it to cool down before folding;
– do not crease the appliance by placing items on top of it during storage (for blankets and
pads only);
– examine the appliance frequently for signs of wear or damage. If there are such signs, if
the appliance has been misused or does not work, return it to the supplier before
switching it on again;
– this appliance is not intended for medical use in hospitals;
– do not use if wet (this instruction is not required for moisture-proof appliances or
Class III appliances);
– this appliance must not be used by persons insensitive to heat and other very vulnerable
persons who are unable to react to overheating;
– children under the age of three are not to use this appliance due to their inability to react
to overheating.
The instructions for underblankets shall state the substance of the following:
– the appliance should not be used on an adjustable bed; or
– if the appliance is used on an adju
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