IEC_61400-1-2014.pdf

IEC 61400-1 Edition 3.1 2014-04 CONSOLIDATED VERSION Wind turbines Part 1:Design requirements IEC 61400-1:2005-08+AMD1:2010-10 CSV(en)colourinsideCopyrighted material licensed to BR Demo by Thomson Reuters(Scientific),Inc.,,downloaded on Nov-27-2014 by James Madison.No further reproduction or distribution is permitted.Uncontrolled when printed.THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2014 IEC,Geneva,Switzerland All rights reserved.Unless otherwise specified,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 either IEC or IECs member National Committee in the country of the requester.If you have any questions about IEC copyright or have an enquiry about obtaining additional rights to this publication,please contact the address below or your local IEC member National Committee for further information.IEC Central Office Tel.:+41 22 919 02 11 3,rue de Varemb Fax:+41 22 919 03 00 CH-1211 Geneva 20 infoiec.ch Switzerland www.iec.ch About the IEC The International Electrotechnical Commission(IEC)is the leading global organization that prepares and publishes International Standards for all electrical,electronic and related technologies.About IEC publications The technical content of IEC publications is kept under constant review by the IEC.Please make sure that you have the latest edition,a corrigenda or an amendment might have been published.IEC Catalogue-webstore.iec.ch/catalogue The stand-alone application for consulting the entire bibliographical information on IEC International Standards,Technical Specifications,Technical Reports and other documents.Available for PC,Mac OS,Android Tablets and iPad.IEC publications search-www.iec.ch/searchpub The advanced search enables to find IEC publications by a variety of criteria(reference number,text,technical committee,).It also gives information on projects,replaced and withdrawn publications.IEC Just Published-webstore.iec.ch/justpublished Stay up to date on all new IEC publications.Just Published details all new publications released.Available online and also once a month by email.Electropedia-www.electropedia.org The worlds leading online dictionary of electronic and electrical terms containing more than 30 000 terms and definitions in English and French,with equivalent terms in 14 additional languages.Also known as the International Electrotechnical Vocabulary(IEV)online.IEC Glossary-std.iec.ch/glossary More than 55 000 electrotechnical terminology entries in English and French extracted from the Terms and Definitions clause of IEC publications issued since 2002.Some entries have been collected from earlier publications of IEC TC 37,77,86 and CISPR.IEC Customer Service Centre-webstore.iec.ch/csc If you wish to give us your feedback on this publication or need further assistance,please contact the Customer Service Centre:csciec.ch.Copyrighted material licensed to BR Demo by Thomson Reuters(Scientific),Inc.,,downloaded on Nov-27-2014 by James Madison.No further reproduction or distribution is permitted.Uncontrolled when printed.IEC 61400-1 Edition 3.1 2014-04 CONSOLIDATED VERSION Wind turbines Part 1:Design requirements INTERNATIONAL ELECTROTECHNICAL COMMISSION ICS 27.180 ISBN 978-2-8322-1525-8 Registered trademark of the International Electrotechnical Commission Warning!Make sure that you obtained this publication from an authorized distributor.colourinsideCopyrighted material licensed to BR Demo by Thomson Reuters(Scientific),Inc.,,downloaded on Nov-27-2014 by James Madison.No further reproduction or distribution is permitted.Uncontrolled when printed.Copyrighted material licensed to BR Demo by Thomson Reuters(Scientific),Inc.,,downloaded on Nov-27-2014 by James Madison.No further reproduction or distribution is permitted.Uncontrolled when printed.IEC 61400-1 Edition 3.1 2014-04 REDLINE VERSION Wind turbines Part 1:Design requirements IEC 61400-1:2005-08+AMD1:2010-10 CSV(en)colourinsideCopyrighted material licensed to BR Demo by Thomson Reuters(Scientific),Inc.,,downloaded on Nov-27-2014 by James Madison.No further reproduction or distribution is permitted.Uncontrolled when printed.2 IEC 61400-1:2005 +AMD1:2010 CSV IEC 2014 CONTENTS FOREWORD.5 INTRODUCTION.7 1 Scope.8 2 Normative references.8 3 Terms and definitions.9 4 Symbols and abbreviated terms.17 4.1 Symbols and units.17 4.2 Abbreviations.19 5 Principal elements.19 5.1 General.19 5.2 Design methods.19 5.3 Safety classes.20 5.4 Quality assurance.20 5.5 Wind turbine markings.20 6 External conditions.21 6.1 General.21 6.2 Wind turbine classes.21 6.3 Wind conditions.22 6.4 Other environmental conditions.31 6.5 Electrical power network conditions.32 7 Structural design.33 7.1 General.33 7.2 Design methodology.33 7.3 Loads.33 7.4 Design situations and load cases.34 7.5 Load calculations.39 7.6 Ultimate limit state analysis.40 8 Control and protection system.47 8.1 General.47