1、TECHNICALREPORTIEC61902First edition1998-09Household microwave ovens Visual clarity of see-through oven doorsFours domestiques micro-ondes Transparence optique des portes de fours fentreReference numberIEC 61902:1998(E)LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY
2、,SUPPLIED BY BOOK SUPPLY BUREAU.NumberingAs from 1 January 1997 all IEC publications are issued with a designation in the60000 series.Consolidated publicationsConsolidated versions of some IEC publications including amendments areavailable.For example,edition numbers 1.0,1.1 and 1.2 refer,respective
3、ly,to thebase publication,the base publication incorporating amendment 1 and the basepublication incorporating amendments 1 and 2.Validity of this publicationThe technical content of IEC publications is kept under constant review by the IEC,thus ensuring that the content reflects current technology.
4、Information relating to the date of the reconfirmation of the publication is availablein the IEC catalogue.Information on the subjects under consideration and work in progress undertaken bythe technical committee which has prepared this publication,as well as the list ofpublications issued,is to be
5、found at the following IEC sources:IEC web site*Catalogue of IEC publicationsPublished yearly with regular updates(On-line catalogue)*IEC BulletinAvailable both at the IEC web site*and as a printed periodicalTerminology,graphical and letter symbolsFor general terminology,readers are referred to IEC
6、60050:InternationalElectrotechnical Vocabulary(IEV).For graphical symbols,and letter symbols and signs approved by the IEC forgeneral use,readers are referred to publications IEC 60027:Letter symbols to beused in electrical technology,IEC 60417:Graphical symbols for use on equipment.Index,survey and
7、 compilation of the single sheets and IEC 60617:Graphical symbolsfor diagrams.*See web site address on title page.LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.TECHNICALREPORT TYPE 2IEC61902First edition1998-09Household microwave ove
8、ns Visual clarity of see-through oven doorsFours domestiques micro-ondes Transparence optique des portes de fours fentre Commission Electrotechnique Internationale International Electrotechnical CommissionPRICE CODE IEC 1998 Copyright-all rights reservedNo part of this publication may be reproduced
9、or utilized in any form or by any means,electronic ormechanical,including photocopying and microfilm,without permission in writing from the publisher.International Electrotechnical Commission3,rue de Varemb Geneva,SwitzerlandTelefax:+41 22 919 0300e-mail:inmailiec.ch IEC web site http:/www.iec.chMFo
10、r price,see current catalogueLICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.2 61902 IEC:1998(E)INTERNATIONAL ELECTROTECHNICAL COMMISSION_HOUSEHOLD MICROWAVE OVENS VISUAL CLARITY OF SEE-THROUGH OVEN DOORSFOREWORD1)The IEC(International
11、 Electrotechnical Commission)is a worldwide organization for standardization comprising all nationalelectrotechnical committees(IEC National Committees).The object of the IEC is to promote international co-operation onall questions concerning standardization in the electrical and electronic fields.T
12、o this end and in addition to other activities,the IEC publishes International Standards.Their preparation is entrusted to technical committees;any IEC NationalCommittee interested in the subject dealt with may participate in this preparatory work.International,governmental andnon-governmental organ
13、izations liaising with the IEC also participate in this preparation.The IEC collaborates closely withthe International Organization for Standardization(ISO)in accordance with conditions determined by agreement betweenthe two organizations.2)The formal decisions or agreements of the IEC on technical
14、matters express,as nearly as possible,an internationalconsensus of opinion on the relevant subjects since each technical committee has representation from all interestedNational Committees.3)The documents produced have the form of recommendations for international use and are published in the form o
15、fstandards,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 Standardstransparently to the maximum extent possible in their national and regional stan
16、dards.Any divergence between the IECStandard 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 equipmentdeclared 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 patentrights.The IEC shall not be held responsible for identifying any