SIST EN 60335-2-17:2013

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Sicherheit elektrischer Geräte für den Hausgebrauch und ähnliche Zwecke - Teil 2-17: Besondere Anforderungen an Wärmezudecken, Wärmeunterbetten, Heizkissen, Kleidung und ähnliche schmiegsame WärmegeräteAppareils électrodomestiques et analogues - Sécurité - Partie 2-17: Exigences particulières pour les couvertures, coussins, vêtements et appareils chauffants souples analoguesHousehold and similar electrical appliances - Safety - Part 2-17: Particular requirements for blankets, pads, clothing and similar flexible heating appliances97.030VSORãQRDomestic electrical appliances in general13.120Varnost na domuDomestic safetyICS:Ta slovenski standard je istoveten z:EN 60335-2-17:2013SIST EN 60335-2-17:2013en01-april-2013SIST EN 60335-2-17:2013SLOVENSKI
STANDARDSIST EN 60335-2-17:2003/A2:2009SIST EN 60335-2-17:2003/A1:2006SIST EN 60335-2-17:20031DGRPHãþD

EUROPEAN STANDARD EN 60335-2-17 NORME EUROPÉENNE
EUROPÄISCHE NORM February 2013
CENELEC European Committee for Electrotechnical Standardization Comité Européen de Normalisation Electrotechnique Europäisches Komitee für Elektrotechnische Normung
Management Centre: Avenue Marnix 17, B - 1000 Brussels
© 2013 CENELEC -
All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 60335-2-17:2013 E
ICS 13.120; 97.040.50 Supersedes EN 60335-2-17:2002 + A1:2006 + A2:2009
English version
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)
Appareils électrodomestiques et analogues -
Sécurité -
Partie 2-17: Exigences particulières pour les couvertures, coussins, vêtements et appareils chauffants souples analogues (CEI 60335-2-17:2012)
Sicherheit elektrischer Geräte für den Hausgebrauch und ähnliche Zwecke -
Teil 2-17: Besondere Anforderungen an Wärmezudecken, Wärmeunterbetten, Heizkissen, Kleidung und ähnliche schmiegsame Wärmegeräte (IEC 60335-2-17:2012)
This European Standard was approved by CENELEC on 2012-04-30. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.
Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CENELEC member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom.
Foreword The text of document 61/4336/FDIS, future edition 3 of IEC 60335-2-17, prepared by IEC/TC 61 "Safety of household and similar electrical appliances" was submitted to the IEC-CENELEC parallel vote and approved by CENELEC as EN 60335-2-17:2013.
The following dates are fixed: • latest date by which the document has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2013-08-22 • latest date by which the national standards conflicting with the document have to be withdrawn (dow) 2015-04-30
This document supersedes EN 60335-2-17:2002 + A1:2006 + A2:2009. EN 60335-2-17:2013 includes the following significant technical changes with respect to EN 60335-2-17:2002: – 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 EN 60335-2-17:2002. This part 2 is to be used in conjunction with EN 60335-1:2012. NOTE 1 When “Part 1” is mentioned in this standard, it refers to EN 60335-1. This part 2 supplements or modifies the corresponding clauses in EN 60335-1, so as to convert that publication into the European 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; SIST EN 60335-2-17:2013

- 3 - EN 60335-2-17:2013
– 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. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CENELEC [and/or CEN] shall not be held responsible for identifying any or all such patent rights.
This standard covers the Principle Elements of the Safety Objectives for Electrical Equipment Designed for Use within Certain Voltage Limits (LVD - 2006/95/EC)
Endorsement notice The text of the International Standard IEC 60335-2-17:2012 was approved by CENELEC as a European Standard without any modification. Add to the bibliography of EN 60335-1:2012: In the official version, for Bibliography, the following notes have to be added for the standards indicated: IEC 60335-2-66 NOTE
Harmonized as EN 60335-2-66. IEC 60335-2-71 NOTE
Harmonized as EN 60335-2-71. IEC 60335-2-81 NOTE
Harmonized as EN 60335-2-81. IEC 60601-2-35 NOTE
Harmonized as EN 60601-2-35. SIST EN 60335-2-17:2013

Annex ZA
(normative)
Normative references to international publications with their corresponding European publications
The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
NOTE
When an international publication has been modified by common modifications, indicated by (mod), the relevant EN/HD applies.
Addition to Annex ZA of EN 60335-1:2012:
Publication Year Title EN/HD Year
IEC 60320-1 + A1 2001 2007 Appliance couplers for household and similar general purposes -
Part 1: General requirements EN 60320-1 + A1 2001 2007
ISO 2439 - Flexible cellular polymeric materials - Determination of hardness (indentation technique) EN ISO 2439 -
ISO 3758 2005 Textiles - Care labelling code using symbols
EN ISO 3758 20051)
ISO/IEC Guide 37 - Instructions for use of products of consumer interest - -
1) EN ISO 3758:2005 is superseded by EN ISO 3758:2012. SIST EN 60335-2-17:2013

IEC 60335-2-17Edition 3.0 2012-03INTERNATIONAL STANDARD NORME INTERNATIONALEHousehold 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 XAICS 13.120; 97.040.50 PRICE CODECODE PRIXISBN 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). SIST EN 60335-2-17:2013

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. SIST EN 60335-2-17:2013

– 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. SIST EN 60335-2-17:2013

– 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)1 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 ___________ 1
There exists a consolidated edition 2.1 (2007) that includes edition 2 and its Amendment 1. SIST EN 60335-2-17:2013

– 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 m2 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 m2. 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. SIST EN 60335-2-17:2013

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 m2 of enclosure material are required. SIST EN 60335-2-17:2013

– 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 %”. SIST EN 60335-2-17:2013

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. SIST EN 60335-2-17:2013

– 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; SIST EN 60335-2-17:2013

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. SIST EN 60335-2-17:2013

– 16 – 60335-2-17 © IEC:2012 8 Protection
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