1、INTERNATIONALSTANDARDIEC60335-2-50Fourth edition2002-11Household and similar electrical appliances Safety Part 2-50:Particular requirements for commercialelectric bains-marieAppareils lectrodomestiques et analogues Scurit Partie 2-50:Rgles particulires pour les bains-marielectriques usage collectifR
2、eference numberIEC 60335-2-50:2002(E)Publication numberingAs from 1 January 1997 all IEC publications are issued with a designation in the60000 series.For example,IEC 34-1 is now referred to as IEC 60034-1.Consolidated editionsThe IEC is now publishing consolidated versions of its publications.For e
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4、he IEC,thus ensuring that the content reflects current technology.Information relating tothis publication,including its validity,is available in the IEC Catalogue ofpublications(see below)in addition to new editions,amendments and corrigenda.Information on the subjects under consideration and work i
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8、:Email:custserviec.chTel:+41 22 919 02 11Fax:+41 22 919 03 00INTERNATIONALSTANDARDIEC60335-2-50Fourth edition2002-11Household and similar electrical appliances Safety Part 2-50:Particular requirements for commercialelectric bains-marieAppareils lectrodomestiques et analogues Scurit Partie 2-50:Rgles
9、 particulires pour les bains-marielectriques usage collectif IEC 2002 Copyright-all rights reservedNo part of this publication may be reproduced or utilized in any form or by any means,electronic ormechanical,including photocopying and microfilm,without permission in writing from the publisher.Inter
10、national Electrotechnical Commission,3,rue de Varemb,PO Box 131,CH-1211 Geneva 20,SwitzerlandTelephone:+41 22 919 02 11 Telefax:+41 22 919 03 00 E-mail:inmailiec.ch Web:www.iec.chKFor price,see current cataloguePRICE CODECommission Electrotechnique InternationaleInternational Electrotechnical Commis
11、sion 2 60335-2-50 IEC:2002(E)CONTENTSFOREWORD.3INTRODUCTION.51Scope.62Normative references.63Definitions.64General requirement.75General conditions for the tests.86Classification.87Marking and instructions.88Protection against access to live parts.109Starting of motor-operated appliances.1010Power i
12、nput and current.1011Heating.1012Void.1113Leakage current and electric strength at operating temperature.1114Transient overvoltages.1115Moisture resistance.1116Leakage current and electric strength.1417Overload protection of transformers and associated circuits.1418Endurance.1419Abnormal operation.1
13、420Stability and mechanical hazards.1421Mechanical strength.1522Construction.1523Internal wiring.1624Components.1725Supply connection and external flexible cords.1726Terminals for external conductors.1727Provision for earthing.1728Screws and connections.1829Clearances,creepage distances and solid in
14、sulation.1830Resistance to heat and fire.1831Resistance to rusting.1832Radiation,toxicity and similar hazards.18Annexes.20Bibliography.20Figure 101 Splash apparatus.1960335-2-50 IEC:2002(E)3 INTERNATIONAL ELECTROTECHNICAL COMMISSION_HOUSEHOLD AND SIMILAR ELECTRICAL APPLIANCES SAFETY Part 2-50:Partic
15、ular requirementsfor commercial electric bains-marieFOREWORD1)The IEC(International Electrotechnical Commission)is a worldwide organization for standardization comprisingall national electrotechnical committees(IEC National Committees).The object of the IEC is to promoteinternational co-operation on
16、 all questions concerning standardization in the electrical and electronic fields.Tothis end and in addition to other activities,the IEC publishes International Standards.Their preparation isentrusted to technical committees;any IEC National Committee interested in the subject dealt with mayparticipate in this preparatory work.International,governmental and non-governmental organizations liaisingwith the IEC also participate in this preparation.The IEC collaborates closely with the International
