1、 PUBLICLY AVAILABLE SPECIFICATION IEC PAS 62400 First edition2005-06 Structuring principles for technical products and technical product documentation Letter codes Main classes and subclasses of objects according to their purpose and task Reference number IEC/PAS 62400:2005(E)LICENSED TO MECON Limit
2、ed.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.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 pu
3、blishing 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.Further information on IEC publications The technical con
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8、tact the Customer Service Centre:Email:custserviec.ch Tel:+41 22 919 02 11 Fax:+41 22 919 03 00 LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.PUBLICLY AVAILABLE SPECIFICATIONIEC PAS 62400 First edition2005-06 Structuring principles f
9、or technical products and technical product documentation Letter codes Main classes and subclasses of objects according to their purpose and task PRICE CODE IEC 2005 Copyright-all rights reserved No part of this publication may be reproduced or utilized in any form or by any means,electronic or mech
10、anical,including photocopying and microfilm,without permission in writing from the publisher.International 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.ch XB For price,see curre
11、nt catalogue Commission Electrotechnique InternationaleInternational Electrotechnical Commission LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.2 PAS 62400 IEC:2005(E)CONTENTS FOREWORD.3 1 Scope.5 2 Normative references.5 3 Specificat
12、ion of letter codes.5 4 Letter codes for objects based on their purpose or task.6 4.1 Overview of main classes of objects with associated letter codes.6 4.2 Rules for generating subclasses.6 4.3 Definition of subclasses of objects.8 Annex A(informative)List of terms.26 Table 1 Letter codes for objec
13、ts in accordance with IEC 613462(main classes).6 Table 2 General assignment of groups of letter codes for subclasses to application areas.7 Table 3 Definitions and letter codes of subclasses related to main classes.8 Table A.1 List of terms for objects,alphabetically ordered by object.26 Table A.2 L
14、ist of terms for objects,alphabetically ordered by letter code.45 LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.PAS 62400 IEC:2005(E)3 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ STRUCTURING PRINCIPLES FOR TECHNICAL PRODUCTS AND TECH
15、NICAL PRODUCT DOCUMENTATION LETTER CODES MAIN CLASSES AND SUBCLASSES OF OBJECTS ACCORDING TO THEIR PURPOSE AND TASK FOREWORD 1)The International Electrotechnical Commission(IEC)is a worldwide organization for standardization comprising all national electrotechnical committees(IEC National Committees
16、).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 particip
