IEC 62497-1 Edition 1.1-2013 Railway applications - Insulation coordination - Part 1 Basic requirements - Clearances and creepage distances for all electrical a.pdf

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1、 IEC 62497-1 Edition 1.1 2013-03 INTERNATIONAL STANDARD NORME INTERNATIONALE Railway applications Insulation coordination Part 1: Basic requirements Clearances and creepage distances for all electrical and electronic equipment Applications ferroviaires Coordination de lisolement Partie 1: Exigences

2、fondamentales Distances disolement dans lair et lignes de fuite pour tout matriel lectrique et lectronique IEC62497-1:2010+A1:2013 colourinsideTHIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2013 IEC, Geneva, Switzerland All rights reserved. Unless otherwise specified, no part of this publication

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16、ntaires sur cette publication ou si vous avez des questions contactez-nous: csciec.ch. IEC 62497-1 Edition 1.1 2013-03 INTERNATIONAL STANDARD NORME INTERNATIONALE Railway applications Insulation coordination Part 1: Basic requirements Clearances and creepage distances for all electrical and electron

17、ic equipment Applications ferroviaires Coordination de lisolement Partie 1: Exigences fondamentales Distances disolement dans lair et lignes de fuite pour tout matriel lectrique et lectronique INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE ICS 45.060 ISBN 978-2-

18、8322-0736-9 Registered trademark of the International Electrotechnical Commission Marque dpose de la Commission Electrotechnique Internationale Warning! Make sure that you obtained this publication from an authorized distributor. Attention! Veuillez vous assurer que vous avez obtenu cette publicatio

19、n via un distributeur agr. colourinside 2 62497-1 IEC:2010+A1:2013 CONTENTS FOREWORD . 5 INTRODUCTION . 7 1 Scope . 8 2 Normative references . 8 3 Terms and definitions . 9 4 Basis for insulation coordination . 12 4.1 Basic principles . 12 4.1.1 General . 12 4.1.2 Insulation coordination with regard

20、 to voltage 12 4.1.3 Insulation coordination with regard to environmental conditions . 13 4.2 Voltages and voltage ratings . 13 4.2.1 General . 13 4.2.2 Rated insulation voltage (UNm) 13 4.2.3 Rated impulse voltage (UNi) . 14 4.3 Time under voltage stress . 15 4.4 Pollution 15 4.5 Insulating materia

21、l . 15 4.5.1 General . 15 4.5.2 Comparative tracking index (CTI) 16 5 Requirements and dimensioning rules for clearances . 16 5.1 General . 16 5.2 Minimum clearances 17 5.2.1 Functional insulation 17 5.2.2 Basic and supplementary insulation . 17 5.2.3 Reinforced insulation . 17 5.3 Contingency 17 5.

22、4 Clearances for altitudes higher than 2 000 m . 17 6 Dimensioning rules for creepage distances . 18 6.1 General . 18 6.2 Minimum creepage distances 18 6.2.1 Functional, basic and supplementary insulations . 18 6.2.2 Reinforced insulation . 18 7 Tests and measurements . 18 7.1 General . 18 7.2 Measu

23、rement of creepage distances and clearances . 19 7.2.1 Method and values 19 7.2.2 Acceptance criteria 19 7.3 Verification of clearances by impulse test 19 7.3.1 Method and values 19 7.3.2 Test acceptance criteria 20 7.4 Verification of clearances by power-frequency test 20 7.4.1 Method and values 20

24、 7.4.2 Test acceptance criteria 20 62497-1 IEC:2010+A1:2013 3 7.5 Verification of clearances by d.c. voltage test 20 7.5.1 Method and values 20 7.5.2 Test acceptance criteria 20 8 Specific requirements for applications in the railway field . 20 8.1 General . 20 8.2 Specific requirements for signalli

25、ng . 21 8.2.1 Overvoltage categories 21 8.2.2 Rated impulse voltages . 21 8.2.3 Induced voltages . 21 8.2.4 Installation instructions 22 8.2.5 Pollution degrees . 22 8.3 Specific requirements for rolling stock . 22 8.3.1 Determination of the rated impulse voltage UNiby method 1 22 8.3.2 Creepage dis

26、tances . 22 8.3.3 Roof installations . 22 8.4 Specific requirements for fixed installations . 23 8.4.1 Determination of the rated impulse voltage UNiby method 1 23 8.4.2 Distances of outdoor insulators 23 Annex A (normative) Tables . 24 Annex B (normative) Provisions for type and routine dielectric

27、tests for equipment 33 Annex C (normative) Methods of measuring creepage distances and clearances . 35 Annex D (normative) Correlation between Unand UNm41 Annex E (informative) Macro-environmental conditions 42 Annex F (informative) Application guide . 43 Bibliography 54 Figure F.1 Determination of

28、minimum clearances and creepage distances . 45 Figure F.2 Example for types of insulation . 49 Figure F.3 Monitoring circuit showing examples of sections . 51 Figure F.4 Drawing of monitoring device 51 Table A.1 Rated impulse voltage UNi for low voltage circuits not powered directly by the contact l

29、ine . 24 Table A.2 Rated impulse voltages (UNi) for circuits powered by the contact line and for traction power circuits in thermo-electric driven vehicles 25 Table A.3 Minimum clearances in air (in mm) for the standard altitude ranges based on the rated impulse voltage UNi. 26 Table A.4 Definition

30、of pollution degrees 27 Table A.5 Minimum creepage distances (in mm) based on rated insulation voltage UNmup to 1 000 V for printed wiring material and associated components . 28 Table A.6 Minimum creepage distances (in mm) for low values of rated insulation voltage UNm for materials other than prin

31、ted wiring material 29 Table A.7 Minimum creepage distances (in mm/kV) for high values of rated insulation voltage UNm30 4 62497-1 IEC:2010+A1:2013 Table A.8 Test voltages for verifying clearances in air for an altitude of 2 000 m above sea level at atmospheric and altitude reference conditions, not

32、 to be used for routine dielectric tests . 31 Table A.9 Altitude correction factors for clearances in circuits with UNiup to and including 60 kV when equipment is intended to be used above 2 000 m 32 Table A.10 Altitude correction factors for clearances in circuits with UNihigher than 60 kV when equ

33、ipment is intended to be used above 2 000 m. 32 Table B.1 Dielectric test for equipments Short-duration power-frequency (a.c.) test levels Ua(kV r.m.s.) based on the rated impulse voltage UNi(kV) . 34 Table C.1 Minimum dimensions of grooves 35 Table D.1 Correlation between nominal voltages of the ra

34、ilway power distribution system and the required insulation voltages for circuits of equipment which are intended to be connected to these systems . 41 Table F.1 Example for the determination of clearances and creepage distances 52 62497-1 IEC:2010+A1:2013 5 INTERNATIONAL ELECTROTECHNICAL COMMISSION

35、 _ RAILWAY APPLICATIONS INSULATION COORDINATION Part 1: Basic requirements Clearances and creepage distances for all electrical and electronic equipment FOREWORD 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising all national electrotech

36、nical committees (IEC National Committees). 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

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45、s publication. Use of the referenced publications is indispensable for the correct application of this publication. 9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of patent rights. IEC shall not be held responsible for identifying any or

46、 all such patent rights. This consolidated version of IEC 62497-1 consists of the first edition (2010) documents 9/1335/FDIS and 9/1358/RVD and its amendment 1 (2013) documents 9/1758/FDIS and 9/1782/RVD. It bears the edition number 1.1. The technical content is therefore identical to the base editi

47、on and its amendment and has been prepared for user convenience. A vertical line in the margin shows where the base publication has been modified by amendment 1. Additions and deletions are displayed in red, with deletions being struck through. 6 62497-1 IEC:2010+A1:2013 International Standard IEC 6

48、2497-1 has been prepared by IEC technical committee 9: Electrical equipment and systems for railways. This standard is based on EN 50124-1. This publication has been drafted in accordance with the ISO/IEC Directives, Part 2. A list of all parts of IEC 62497, under the general title Railway applicati

49、ons Insulation coordination, can be found of the IEC website. The committee has decided that the contents of this publication will remain unchanged until the stability date indicated on the IEC web site under “http:/webstore.iec.ch“ in the data related to the specific publication. At this date, the publication will be reconfirmed, withdrawn, replaced by a revised edition, or amended. I