BS-EN-60335-2-12-1995 IEC-60335-2-12-1992.pdf

BRITISH STANDARD BS EN 60335-2-12: 1995 IEC 335-2-12: 1992 Specification for Safety of household and similar electrical appliances Part 2: Particular requirements Section 2.12 Warming plates and similar appliances The European Standard EN 60335-2-12:1995 has the status of a British Standard ICS 97.040.20; 97.040.50 Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 13 17:11:38 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 60335-2-12:1995 This British Standard, having been prepared under the direction of the Electrotechnical Sector Board, was published under the authority of the Standards Board and comes into effect on 15 December 1995 © BSI 06-1999 The following BSI references relate to the work on this standard: Committee reference CPL/61/30 Draft for comment 90/31273 DC ISBN 0 580 24863 1 Committees responsible for this British Standard The preparation of this British Standard was entrusted by Technical Committee CPL/61, Safety of electrical appliances, to Subcommittee CPL/61/30, Heating appliances (other than room heaters), upon which the following bodies were represented: Association of Control Manufacturers (BEAMA Ltd.) Association of Manufacturers of Domestic Electrical Appliances British Burn Association British Electrotechnical Approvals Board Consumer Policy Committee of BSI Consumers Association Department of Trade and Industry (Consumer Safety Unit, CA Division) Electricity Association Royal Society for the Prevention of Accidents Small Electrical Appliances Marketing Association Amendments issued since publication Amd. No.DateComments Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 13 17:11:38 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 60335-2-12:1995 © BSI 06-1999i Contents Page Committees responsible Inside front cover National foreword ii Foreword 2 Text of EN 60335-2-12 5 List of referencesInside back cover Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 13 17:11:38 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 60335-2-12:1995 ii © BSI 06-1999 National foreword This British Standard has been prepared by Subcommittee CPL/61/30 and is the English language version of EN 60335-2-12:1995 Safety of household and similar electrical appliances Part 2: Particular requirements for warming plates and similar appliances, published by the European Committee for Electrotechnical Standardization (CENELEC). It is identical with IEC 335-2-12:1992 published by the International Electrotechnical Commission (IEC). This British Standard supersedes BS EN 60335-2-12:1991 which will be withdrawn on 1 January 1998 in accordance with the CENELEC Internal Regulations. Certification and marks will not be awarded after this date with respect to BS EN 60335-2-12:1991. However, such certification and marks, already awarded, may continue to apply to production until 1 January 2003. This British Standard is to be read in conjunction with BS EN 60335-1:1995 General requirements. The many references to Part 1 should be read as references to BS EN 60335-1, which is the English language version of EN 60335-1:1994 which was derived from IEC 335-1:1991. Amendments and revisions of Part 1 have also to be taken into account and the dates when such changes become applicable will be stated in the relevant amendment or revision of Part 1. Product approval. Attention is drawn to the fact that products conforming to this British Standard may be approved by the British Electrotechnical Approvals Board for the purposes of participation in the CENELEC Certification Agreement and in the CB Scheme of the IECEE. (Details of the BEAB Approval Scheme are given on the inside back cover.) A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, the EN title page, pages 2 to 10, an inside back cover and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover. Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 13 17:11:38 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM EN 60335-2-12 June 1995 ICS 97.040.20;97.040.50Supersedes EN 60335-2-12:1990 Descriptors: Household electrical appliances, warming plates, safety requirements, protection against electric shock, fire protection, protection against mechanical hazard English version Safety of household and similar electrical appliances Part 2: Particular requirements for warming plates and similar appliances (IEC 335-2-12:1992) Sécurité des appareils électrodomestiques et analogues Partie 2: Règles particulières pour les chauffe- plats et appareils analogues (CEI 335-2-12:1992) Sicherheit elektrischer Geräte für den Hausgebrauch und ähnliche Zwecke Teil 2: Besondere Anforderungen für Warmhalteplatten und ähnliche Geräte (IEC 335-1-12:1992) This European Standard was approved by CENELEC on 1995-05-15. 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 Central Secretariat 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 Central Secretariat has the same status as the official versions. CENELEC members are the national electrotechnical committees of Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CENELEC European Committee for Electrotechnical Standardization Comité Européen de Normalisation Electrotechnique Europäisches Komitee für Elektrotechnische Normung Central Secretariat: rue de Stassart 35, B-1050 Brussels © 1995 Copyright reserved to CENELEC members Ref. No. EN 60335-2-12:1995 E Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 13 17:11:38 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 60335-2-12:1995 © BSI 06-1999 2 Foreword The proposal to endorse IEC 335-2-12:1992, document CLC/TC 61 (SEC) 886, was circulated under the enquiry procedure in March 1993. This proposal was discussed during the Oslo meeting in April 1994, when it was decided to submit a draft for EN 60335-2-12 to the formal vote. This draft was circulated in November 1994 and was ratified by CENELEC as EN 60335-2-12 on 1995-05-15. This European Standard has been prepared by the secretariat of CENELEC Technical Committee TC 61. The following dates are applicable: For products which have complied with EN 60335-2-12:1990 before 1998-01-01, as shown by the manufacturer or by a certification body, this previous standard may continue to apply for production until 2003-01-01. This standard has to be used in conjunction with EN 60335-1, Safety of household and similar electrical appliances Part 1: General requirements. It was established on the basis of the 1994 edition of that standard. Amendments and revisions of Part 1 have also to be taken into account and the dates when such changes become applicable will be stated in the relevant amendment or revision of Part 1. This Part 2 supplements or modifies the corresponding clauses of EN 60335-1, so as to convert it into the European Standard: Safety requirements for electric warming plates and similar appliances. Where a particular subclause of Part 1 is not mentioned in this Part 2, that subclause applies as far as is reasonable. Where this standard states “addition”, “modification” or “replacement”, the relevant text of Part 1 is to be adapted accordingly. Subclauses which are additional to those in Part 1 are numbered starting from 101. There are no special national conditions causing a deviation from this European Standard, other than those listed in Annex ZA to EN 60335-1. There are no national deviations from this European Standard other than those listed in Annex ZB to EN 60335-1. NOTEThe following print types are used: requirements: in roman type; test specifications: in italic type; notes: in small roman type. Words in bold in the test are defined in clause 2. When a definition of Part 1 concerns an adjective, the adjective and the associated noun are also in bold. latest date by which the EN has to be implemented at national level by publication of an identical national standard or by endorsement(dop) 1996-01-01 latest date by which national standards conflicting with the EN have to be withdrawn(dow) 1998-01-01 Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 13 17:11:38 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 60335-2-12:1995 © BSI 06-19993 Contents Page Foreword 2 1Scope5 2Definitions5 3General requirement5 4General conditions for the tests5 5Void5 6Classification5 7Marking and instructions5 8Protection against access to live parts6 9Starting of motor-operated appliances6 10Power input and current6 11Heating6 12Void6 13Leakage current and electric strength at operating temperature6 14Void6 15Moisture resistance6 16Leakage current and electric strength6 17Overload protection of transformers and associated circuits6 18Endurance6 19Abnormal operation7 20Stability and mechanical hazards7 21Mechanical strength7 22Construction7 23Internal wiring7 24Components7 25Supply connection and external flexible cords7 26Terminals for external conductors8 27Provision for earthing8 28Screws and connections8 29Creepage distances, clearances and distances through insulation8 30Resistance to heat, fire and tracking8 31Resistance to rusting8 32Radiation, toxicity and similar hazard 8 Annexes9 Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 13 17:11:38 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 4 blank Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 13 17:11:38 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 60335-2-12:1995 © BSI 06-19995 1 Scope This clause of part 1 is replaced by: This standard deals with the safety of electric warming plates, warming trays and similar appliances intended for keeping food or vessels warm, for household and similar purposes, their rated voltage being not more than 250 V. Appliances not intended for normal household use but which nevertheless may be a source of danger to the public, such as appliances intended to be used by laymen in shops, in light industry and on farms, are also within the scope of this standard. So far as is practicable, this standard deals with the common hazards presented by appliances which are encountered by all persons in and around the home. This standard does not in general take into account the use of appliances by young children or infirm persons without supervision; playing with the appliance by young children. NOTE 1Attention is drawn to the fact that: for appliances intended to be used in vehicles or on board ships or in aircraft, additional requirements may be necessary; for appliances intended to be used in tropical countries, special 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 2This standard does not apply to: appliances made of flexible material, such as textile material; appliances intended to be used in locations where special conditions prevail, such as the presence of a corrosive or explosive atmosphere (dust, vapour or gas); appliances designed exclusively for commercial catering or industrial purposes. NOTE 3Until an IEC standard for appliances for commercial catering purposes is issued, this standard may form a guide to suitable requirements and tests for such appliances. 2 Definitions This clause of part 1 is applicable except as follows: 2.2.9 Replacement: normal operation the appliance is operated with or without a vessel on the heated surface, whichever is the more unfavourable. A shallow pan, 15 cm in diameter is used and filled with water to a height of at least 25 mm. If vessels are supplied with the appliance or specified in the instructions for use, these are used instead 2.2.101 warming plate appliance having a heated surface on which food or vessels can be placed. The appliance is intended to keep the food or the vessels at a temperature suitable for serving NOTEWarming plates are also known as warming trays. 3 General requirement This clause of part 1 is applicable. 4 General conditions for the tests This clause of part 1 is applicable except as follows: 4.2 Addition: For appliances intended to be partially or completely immersed in water for cleaning, three additional appliances are required for the tests of 15.101. 5 Void 6 Classification This clause of part 1 is applicable. 7 Marking and instructions This clause of part 1 is applicable except as follows: 7.1 Addition: Appliances intended to be partially immersed in water for cleaning shall be marked with the maximum level of immersion and the substance of the following: Do not immerse beyond this level. 7.12 Addition: The instructions for use for appliances incorporating an appliance inlet and intended to be partially or completely immersed in water for cleaning, shall state that the connector must be removed before the appliance is cleaned and that the appliance inlet must be dried before the appliance is used again. The instructions for use for appliances intended to be used with a connector incorporating a thermostat, shall state that only the appropriate connector must be used. The instructions for use for appliances having surfaces of glass, ceramic or similar brittle material which forms part of the enclosure of live parts shall include the substance of the following warning: WARNING. Do not use the appliance if the surface is cracked. The instructions for use for warming plates which have to be used with particular vessels which are not supplied, shall specify the vessels to be used. Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 13 17:11:38 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 60335-2-12:1995 6 © BSI 06-1999 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. 11 Heating This clause of part 1 is applicable except as follows: 11.2 Modification: Portable appliances are placed away from the walls of the test corner. 11.7 Replacement: Appliances are operated until steady conditions are establ