60335-2-38

INTERNATIONAL STANDARD IEC 60335-2-38 Fifth edition 2002-11 Household and similar electrical appliances – Safety – Part 2-38: Particular requirements for commercial electric griddles and griddle grills Appareils électrodomestiques et analogues – Sécurité – Partie 2-38: Règles particulières pour les plaques à griller électriques à usage collectif Reference number IEC 60335-2-38:2002(E) Publication numbering As from 1 January 1997 all IEC publications are issued with a designation in the 60000 series. For example, IEC 34-1 is now referred to as IEC 60034-1. Consolidated editions The IEC is now publishing consolidated versions of its publications. For example, edition numbers 1.0, 1.1 and 1.2 refer, respectively, to the base publication, the base publication incorporating amendment 1 and the base publication incorporating amendments 1 and 2. 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Please contact the Customer Service Centre (see below) for further information. • Customer Service Centre If you have any questions regarding this publication or need further assistance, please contact the Customer Service Centre: Email: custserv@iec.ch Tel: +41 22 919 02 11 Fax: +41 22 919 03 00 INTERNATIONAL STANDARD IEC 60335-2-38 Fifth edition 2002-11 Household and similar electrical appliances – Safety – Part 2-38: Particular requirements for commercial electric griddles and griddle grills Appareils électrodomestiques et analogues – Sécurité – Partie 2-38: Règles particulières pour les plaques à griller électriques à usage collectif  IEC 2002  Copyright - all rights reserved No part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from the publisher. International Electrotechnical Commission, 3, rue de Varembé, PO Box 131, CH-1211 Geneva 20, Switzerland Telephone: +41 22 919 02 11 Telefax: +41 22 919 03 00 E-mail: inmail@iec.ch Web: www.iec.ch L For price, see current catalogue PRICE CODECommission Electrotechnique Internationale International Electrotechnical Commission Международная Электротехническая Комиссия – 2 – 60335-2-38 © IEC:2002(E) CONTENTS FOREWORD .......................................................................................................................... 3 INTRODUCTION .................................................................................................................... 5 1 Scope .............................................................................................................................. 6 2 Normative references....................................................................................................... 6 3 Definitions ....................................................................................................................... 6 4 General requirement ........................................................................................................ 7 5 General conditions for the tests ....................................................................................... 7 6 Classification ................................................................................................................... 8 7 Marking and instructions .................................................................................................. 8 8 Protection against access to live parts ............................................................................10 9 Starting of motor-operated appliances ............................................................................10 10 Power input and current ..................................................................................................10 11 Heating ...........................................................................................................................11 12 Void ..............................................................................................................................11 13 Leakage current and electric strength at operating temperature ......................................11 14 Transient overvoltages....................................................................................................12 15 Moisture resistance.........................................................................................................12 16 Leakage current and electric strength .............................................................................14 17 Overload protection of transformers and associated circuits............................................15 18 Endurance ......................................................................................................................15 19 Abnormal operation.........................................................................................................15 20 Stability and mechanical hazards ....................................................................................16 21 Mechanical strength........................................................................................................16 22 Construction ...................................................................................................................17 23 Internal wiring .................................................................................................................17 24 Components ...................................................................................................................18 25 Supply connection and external flexible cords.................................................................18 26 Terminals for external conductors ...................................................................................19 27 Provision for earthing......................................................................................................19 28 Screws and connections .................................................................................................19 29 Clearances, creepage distances and solid insulation ......................................................19 30 Resistance to heat and fire .............................................................................................19 31 Resistance to rusting ......................................................................................................20 32 Radiation, toxicity and similar hazards ............................................................................20 Annexes................................................................................................................................22 Bibliography ..........................................................................................................................22 Figure 101 – Splash apparatus..............................................................................................21 60335-2-38 © IEC:2002(E) – 3 – INTERNATIONAL ELECTROTECHNICAL COMMISSION ____________ HOUSEHOLD AND SIMILAR ELECTRICAL APPLIANCES – SAFETY – Part 2-38: Particular requirements for commercial electric griddles and griddle grills FOREWORD 1) The IEC (International Electrotechnical Commission) is a worldwide organization for standardization comprising all national electrotechnical committees (IEC National Committees). The object of the 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, the IEC publishes International Standards. 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. The 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 the 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 National Committees. 3) The documents produced have the form of recommendations for international use and are published in the form of standards, technical specifications, technical reports or guides and they are accepted by the National Committees in that sense. 4) In order to promote international unification, IEC National Committees undertake to apply IEC International Standards transparently to the maximum extent possible in their national and regional standards. Any divergence between the IEC Standard and the corresponding national or regional standard shall be clearly indicated in the latter. 5) The IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any equipment declared to be in conformity with one of its standards. 6) Attention is drawn to the possibility that some of the elements of this International Standard may be the subject of patent rights. The 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 subcommittee 61E: Safety of electrical commercial catering equipment, of IEC technical committee 61: Safety of household and similar electrical appliances. This fifth edition cancels and replaces the fourth edition published in 2000. It constitutes a technical revision. The text of this part of IEC 60335 is based on the following documents: FDIS Report on voting 61E/400/FDIS 61E/412 /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 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 fourth edition (2001) 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 commercial electric griddles and griddle grills. – 4 – 60335-2-38 © IEC:2002(E) 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 of Part 1 concerns an adjective, the adjective and the associated noun are also in bold . The committee has decided that the contents of this publication will remain unchanged until 2004. At this date, the publication will be • reconfirmed; • withdrawn; • replaced by a revised edition, or • amended. The following differences exist in the countries indicated below. – 6.1: Class 01 appliances are allowed (Japan). – 6.2: For appliances intended to be installed in a kitchen, an appropriate degree of protection against harmful ingress of water is required according to their height of installation (France). – 13.2: Leakage current limits are different (Japan). – 16.2: Leakage current limits are different (Japan). – Clause 21: For appliances intended to be installed in a kitchen, different values of impact energy are applicable according to the height of the impact point (France). A bilingual version of this publication may be issued at a later date. 60335-2-38 © IEC:2002(E) – 5 – 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. 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. 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. 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. – 6 – 60335-2-38 © IEC:2002(E) HOUSEHOLD AND SIMILAR ELECTRICAL APPLIANCES – SAFETY – Part 2-38: Particular requirements for commercial electric griddles and griddle grills 1 Scope This clause of Part 1 is replaced by the following. This International Standard deals with the safety of electrically operated commercial griddles and griddle grills not intended for household use, their rated voltage being not more than 250 V for single-phase appliances connected between one phase and neutral and 480 V for other appliances. NOTE 101 These appliances are used for example in restaurants, canteens, hospitals and commercial enterprises such as bakeries, butcheries, etc. The electrical part of appliances making use of other forms of energy is also within the scope of this standard. As far as is practicable, this standard deals with the common hazards presented by these types of appliances. 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, the national water supply authorities and similar authorities. NOTE 103 This standard does not apply to – appliances designed exclusively for industrial purposes; – appliances intended to be used in locations where special conditions prevail, such as the presence of a corrosive or explosive atmosphere (dust, vapour or gas); – continuous process appliances for the mass production of food; – grillers and toasters (IEC 60335-2-48); – appliances incorporating induction heating sources. 2 Normative references This clause of Part 1 is applicable. 3 Definitions This clause of Part 1 is applicable except as follows. 3.1.4 Addition: NOTE 101 The rated power input is the sum of the power inputs of all the individual elements in the appliance that can be on at one time; where there are several such combinations possible, that giving the highest power input is used in determining the rated power input. 3.1.9 Replacement: normal operation operation of the appliance under the following conditions 60335-2-38 © IEC:2002(E) – 7 – Appliances are operated in accordance with the manufacturer's instructions with no load and with the controls set to give the temperatures as set out below, the temperature being measured at the hottest point of each controlled cooking surface. Stepped controls are set to the first position that gives a temperature equal to or greater than 275 °C. Cycling controls are set so that the mean value of the temperature over the cycle is 275 °C ± 5 °C. If this temperature cannot be reached, the control is set at the maximum. Griddle grills are operated open or closed whichever is the more unfavourable. When in the closed position, the plates are separated by a heat-resistant low-conductivity spacer panel 10 mm thick and having an area equal to the smaller of the cooking areas of the two heating plates. For griddle grills where both plates are not separately controlled, the control is adjusted so that the conditions set out above are achieved on the directly controlled plate. Where both plates are separately controlled, the conditions set out apply to both plates. Motors incorporated in the appliance are operated in the intended manner under the most severe conditions that can be expected in normal use taking into account the manufacturer's instructions. 3.101 griddle an appliance intended to cook by direct contact between one side of the food and a heated surface 3.102 griddle grill an appliance intended to cook by direct simultaneous contact of both sides of the food with two heated surfaces 3.103 installation wall a special fixed construction containing supply facilities for appliances installed in conjunction with it 3.104 heating unit any part of the appliance that fulfils an independent cooking or heating function 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. 5.10 Addition: Appliances intended for installation in a bank of other appliances and appliances intended to be fixed to an installation wall are enclosed to obtain protection against electric shock and harmful ingress of water equivalent to that obtained when installed in accordance with the instructions provided with the appliance. NOTE 101 Appropriate enclosures or additional appliances may be needed for test purposes. – 8 – 60335-2-38 © IEC:2002(E) 5.101 Appliances are tested as heating appliances, even if they incorporate a motor. 5.102 Appliances, when assembled in combination with or incorporating other appliances, are tested in accordance