IEC_60917-2-3-2006.pdf

INTERNATIONAL STANDARD IEC60917-2-3 First edition2006-05 Modular order for the development of mechanical structures for electronic equipment practices Part 2-3:Sectional specification Interface co-ordination dimensions for the 25 mm equipment practice Extended detail specification Dimensions for subracks,chassis,backplanes,front panels and plug-in units Reference number IEC 60917-2-3:2006(E)LICENSED TO MECON Limited.-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 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.Further information on IEC publications The technical content of IEC publications is kept under constant review by the IEC,thus ensuring that the content reflects current technology.Information relating to this publication,including its validity,is available in the IEC Catalogue of publications(see below)in addition to new editions,amendments and corrigenda.Information on the subjects under consideration and work in progress undertaken by the technical committee which has prepared this publication,as well as the list of publications issued,is also available from the following:IEC Web Site(www.iec.ch)Catalogue of IEC publications The on-line catalogue on the IEC web site(www.iec.ch/searchpub)enables you to search by a variety of criteria including text searches,technical committees and date of publication.On-line information is also available on recently issued publications,withdrawn and replaced publications,as well as corrigenda.IEC Just Published This summary of recently issued publications(www.iec.ch/online_news/justpub)is also available by email.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: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.INTERNATIONAL STANDARD IEC60917-2-3 First edition2006-05 Modular order for the development of mechanical structures for electronic equipment practices Part 2-3:Sectional specification Interface co-ordination dimensions for the 25 mm equipment practice Extended detail specification Dimensions for subracks,chassis,backplanes,front panels and plug-in units IEC 2006 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 V For price,see current cataloguePRICE CODE Commission Electrotechnique InternationaleInternational Electrotechnical Commission LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.2 60917-2-3 IEC:2006(E)CONTENTS FOREWORD.4 INTRODUCTION.6 1 Scope and object.8 2 Normative references.8 3 Terms and definitions.9 4 Arrangement overview.9 5 Subrack dimensions for injector/extractor handle of plug-in units.10 5.1 Subrack interface dimensions.10 6 Dimensions of injector/extractor handle for plug-in units.12 6.1 Injector/extractor handle interface dimensions.12 6.2 Handle-locking function.14 7 Subrack and plug-in units with electromagnetic shielding provision.14 7.1 Subrack interface dimensions for electromagnetic shielding provision.14 7.2 Front panel/plug-in unit interface dimensions.17 8 Key/coding system for subrack and plug-in units.18 8.1 Subrack interface dimensions Key/coding system on the plug-in unit guides.19 8.2 Key dimensions Key/coding system on the plug-in unit guides.20 8.3 Programming of key Key/coding system on the plug-in guides.22 8.4 Keying chamber inspection dimensions.22 9 Alignment pin and/or electrical contact for front panels and plug-in units.23 9.1 Alignment pins and receptacle plates on the subrack horizontal members.24 9.2 Alignment and/or electrical contact pins and receptacles on the subrack plug-in unit guides.25 10 Electrostatic discharge provision for plug-in units and subracks.27 10.1 ESD contact interface dimensions.28 10.2 ESD strip interface dimensions.28 11 Subrack dimensions for rear-mounted plug-in units.32 Annex A Subrack,plug-in unit and backplane dimensions for using metric connectors.33 Figure 1 Typical example of large subracks in a wide cabinet,equipped mass volume of