IEC_60439-1ed4.1en-d.pdf

Low-voltage switchgear and controlgear assemblies Part 1:Type-tested and partially type-tested assemblies INTERNATIONAL STANDARD IEC60439-1 Edition 4.12004-04 Reference number IEC 60439-1:1999+A1:2004(E)Edition 4:1999 consolidated with amendment 1:2004 This English-language version is derived from the original bilingual publication by leaving out all French-language pages.Missing page numbers correspond to the French-language pages.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 example,edition numbers 1.0,1.1 and 1.2 refer,respectively,to the base publication,thebase publication incorporating amendment 1 and the base publication incorporatingamendments 1 and 2.Further information on IEC publicationsThe technical content of IEC publications is kept under constant review by the 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 in progress undertakenby the technical committee which has prepared this publication,as well as the listof publications issued,is also available from the following:IEC Web Site(www.iec.ch)Catalogue of IEC publicationsThe on-line catalogue on the IEC web site(http:/www.iec.ch/searchpub/cur_fut.htm)enables you to search by a variety of criteria including text searches,technicalcommittees and date of publication.On-line information is also available onrecently issued publications,withdrawn and replaced publications,as well ascorrigenda.IEC Just Published This summary of recently issued publications(http:/www.iec.ch/online_news/justpub/jp_entry.htm)is also available by email.Please contact the CustomerService Centre(see below)for further information.Customer Service CentreIf you have any questions regarding this publication or need further assistance,please contact the Customer Service Centre:Email:custserviec.chTel:+41 22 919 02 11Fax:+41 22 919 03 00 Low-voltage switchgear and controlgear assemblies Part 1:Type-tested and partially type-tested assemblies For price,see current catalogue IEC 2004 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 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 INTERNATIONAL STANDARD IEC60439-1 Edition 4.12004-04 XD Commission Electrotechnique InternationaleInternational Electrotechnical Commission PRICE CODE Edition 4:1999 consolidated with amendment 1:2004 60439-1 IEC:1999+A1:2004 3 CONTENTS FOREWORD.9 1 General.13 1.1 Scope and object.13 1.2 Normative references.13 2 Definitions.21 2.1 General.21 2.2 Constructional units of ASSEMBLIES.25 2.3 External design of ASSEMBLIES.27 2.4 Structural parts of ASSEMBLIES.29 2.5 Conditions of installation of ASSEMBLIES.33 2.6 Protective measures with regard to electric shock.33 2.7 Gangways within ASSEMBLIES.35 2.8 Electronic functions.37 2.9 Insulation co-ordination.37 2.10 Short-circuit currents.41 3 Classification of ASSEMBLIES.43 4 Electrical characteristics of ASSEMBLIES.43 4.1 Rated voltages.43 4.2 Rated current(In)(of a circuit of an ASSEMBLY).45 4.3 Rated short-time withstand current(Icw)(of a circuit of an ASSEMBLY).45 4.4 Rated peak withstand current(Ipk)(of a circuit of an ASSEMBLY).45 4.5 Rated conditional short-circuit current(Icc)(of a circuit of an ASSEMBLY).45 4.6 Rated fused short-circuit current(Icf)(of a circuit of an ASSEMBLY).47 4.7 Rated diversity factor.47 4.8 Rated frequency.47 5 Information to be given regarding the ASSEMBLY.47 5.1 Nameplates.47 5.2 Markings.49 5.3 Instructions for installation,operation and maintenance.49 6 Service conditions.51 6.1 Normal service conditions.51 6.2 Special service conditions.55 6.3 Conditions during transport,storage and erection.57 7 Design and construction.57 7.1 Mechanical design.57 7.2 Enclosure and degree of protection.65 7.3 Temperature rise.67 7.4 Protection against electric shock.71 7.5 Short-circuit protection and short-circuit withstand strength.87 7.6 Switching devices and components installed in ASSEMBLIES.95 7.7 Internal separation of ASSEMBLIES by barriers or partitions.105 60439-1 IEC:1999+A1:2004 5 7.8 Electrical connections inside an ASSEMBLY:bars and insulated conductors.107 7.9 Requirements for electronic equipment supply circuits.109 7.10 Electromagnetic compatibility(EMC).113 7.11 Description of the types of electrical connections of functional units.117 8 Test specifications.119