International Standard IEC 60204-1 Has Been Prepared by Technical Committee 44: Safety of Machinery – Electrotechnical Aspects
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This preview is downloaded from www.sis.se. Buy the entire standard via https://www.sis.se/std-567558 INTERNATIONAL IEC STANDARD 60204-1 Fifth edition 2005-10 Safety of machinery – Electrical equipment of machines – Part 1: General requirements 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. Reference number IEC 60204-1:2005(E) Copyright © IEC, 2005, Geneva, Switzerland. All rights reserved. Sold by SIS under license from IEC and SEK. No part of this document may be copied, reproduced or distributed in any form without the prior written consent of the IEC. This preview is downloaded from www.sis.se. Buy the entire standard via https://www.sis.se/std-567558 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. 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Buy the entire standard via https://www.sis.se/std-567558 INTERNATIONAL IEC STANDARD 60204-1 Fifth edition 2005-10 Safety of machinery – Electrical equipment of machines – Part 1: General requirements 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 mechanical, including photocopying and microfilm, without permission in writing from the publisher. International Electrotechnical Commission, 3, rue de Varembé, PO Box 131, CH-1211 Geneva 20, Switzerland Telephone: +41 22 919 02 11 Telefax: +41 22 919 03 00 E-mail: [email protected] Web: www.iec.ch PRICE CODE Commission Electrotechnique Internationale XF International Electrotechnical Commission Международная Электротехническая Комиссия For price, see current catalogue Copyright © IEC, 2005, Geneva, Switzerland. All rights reserved. Sold by SIS under license from IEC and SEK. No part of this document may be copied, reproduced or distributed in any form without the prior written consent of the IEC. This preview is downloaded from www.sis.se. Buy the entire standard via https://www.sis.se/std-567558 60204-1 IEC:2005 – 3 – CONTENTS FOREWORD.........................................................................................................................11 INTRODUCTION...................................................................................................................17 1 Scope.............................................................................................................................21 2 Normative references......................................................................................................23 3 Definitions ......................................................................................................................27 4 General requirements .....................................................................................................41 4.1 General considerations ..........................................................................................41 4.2 Selection of equipment ..........................................................................................43 4.3 Electrical supply ....................................................................................................45 4.4 Physical environment and operating conditions ......................................................47 4.5 Transportation and storage ....................................................................................51 4.6 Provisions for handling ..........................................................................................51 4.7 Installation.............................................................................................................51 5 Incoming supply conductor terminations and devices for disconnecting and switching off ...................................................................................................................51 5.1 Incoming supply conductor terminations.................................................................51 5.2 Terminal for connection to the external protective earthing system .........................53 5.3 Supply disconnecting (isolating) device ..................................................................53 5.4 Devices for switching off for prevention of unexpected start-up...............................59 5.5 Devices for disconnecting electrical equipment ......................................................59 5.6 Protection against unauthorized, inadvertent and/or mistaken connection...............61 6 Protection against electric shock.....................................................................................61 6.1 General .................................................................................................................61 6.2 Protection against direct contact ............................................................................61 6.3 Protection against indirect contact .........................................................................67 6.4 Protection by the use of PELV................................................................................69 7 Protection of equipment ..................................................................................................71 7.1 General .................................................................................................................71 7.2 Overcurrent protection ...........................................................................................71 7.3 Protection of motors against overheating ...............................................................77 7.4 Abnormal temperature protection ...........................................................................79 7.5 Protection against supply interruption or voltage reduction and subsequent restoration .............................................................................................................79 7.6 Motor overspeed protection....................................................................................81 7.7 Earth fault/residual current protection.....................................................................81 7.8 Phase sequence protection....................................................................................81 7.9 Protection against overvoltages due to lightning and to switching surges ................81 8 Equipotential bonding .....................................................................................................81 8.1 General .................................................................................................................81 8.2 Protective bonding circuit.......................................................................................87 8.3 Functional bonding ................................................................................................93 8.4 Measures to limit the effects of high leakage current ..............................................93 Copyright © IEC, 2005, Geneva, Switzerland. All rights reserved. Sold by SIS under license from IEC and SEK. No part of this document may be copied, reproduced or distributed in any form without the prior written consent of the IEC. This preview is downloaded from www.sis.se. Buy the entire standard via https://www.sis.se/std-567558 60204-1 IEC:2005 – 5 – 9 Control circuits and control functions...............................................................................93 9.1 Control circuits ......................................................................................................93