IEC 62497-1-2010 Railway applications - Insulation coordination - Part 1 Basic requirements - Clearances and creepage distances for all electrical and electroni.pdf

1、 IEC 62497-1Edition 1.0 2010-02INTERNATIONAL STANDARD NORME INTERNATIONALERailway 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 fon

2、damentales Distances disolement dans lair et lignes de fuite pour tout matriel lectrique et lectronique IEC62497-1:2010 THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2010 IEC, Geneva, Switzerland All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or ut

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17、sulation coordination Part 1: Basic requirements Clearances and creepage distances for all electrical and electronic equipment Applications ferroviaires Coordination de lisolement Partie 1: Exigences fondamentales Distances disolement dans lair et lignes de fuite pour tout matriel lectrique et lectr

18、onique INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE XAICS 45.060 PRICE CODECODE PRIXISBN 2-8318-1078-2 Registered trademark of the International Electrotechnical Commission Marque dpose de la Commission Electrotechnique Internationale 2 62497-1 IEC:2010 CONTEN

19、TS FOREWORD.4 INTRODUCTION.6 1 Scope.7 2 Normative references .7 3 Terms and definitions .8 4 Basis for insulation coordination .11 4.1 Basic principles .11 4.1.1 General .11 4.1.2 Insulation coordination with regard to voltage 11 4.1.3 Insulation coordination with regard to environmental conditions

20、.12 4.2 Voltages and voltage ratings .12 4.2.1 General .12 4.2.2 Rated insulation voltage (UNm) 12 4.2.3 Rated impulse voltage (UNi).13 4.3 Time under voltage stress .14 4.4 Pollution14 4.5 Insulating material.14 4.5.1 General .14 4.5.2 Comparative tracking index (CTI) 14 5 Requirements and dimensio

21、ning rules for clearances .15 5.1 General .15 5.2 Minimum clearances15 5.2.1 Functional insulation15 5.2.2 Basic and supplementary insulation.16 5.2.3 Reinforced insulation.16 5.3 Contingency 16 6 Dimensioning rules for creepage distances.16 6.1 General .16 6.2 Minimum creepage distances 17 6.2.1 Fu

22、nctional, basic and supplementary insulations .17 6.2.2 Reinforced insulation.17 7 Tests and measurements .17 7.1 General .17 7.2 Measurement of creepage distances and clearances.18 7.2.1 Method and values 18 7.2.2 Acceptance criteria18 7.3 Verification of clearances by impulse test18 7.3.1 Method a

23、nd values 18 7.3.2 Test acceptance criteria 18 7.4 Verification of clearances by power-frequency test 18 7.4.1 Method and values 18 7.4.2 Test acceptance criteria 18 7.5 Verification of clearances by d.c. voltage test19 7.5.1 Method and values 19 7.5.2 Test acceptance criteria 19 8 Specific requirem

24、ents for applications in the railway field .19 62497-1 IEC:2010 3 8.1 General .19 8.2 Specific requirements for signalling .19 8.2.1 Overvoltage categories19 8.2.2 Rated impulse voltages .20 8.2.3 Induced voltages .20 8.2.4 Installation instructions20 8.2.5 Pollution degrees.20 8.3 Specific requirem

25、ents for rolling stock .20 8.3.1 Determination of UNiby method 120 8.3.2 Creepage distances.21 8.3.3 Roof installations.21 8.4 Specific requirements for fixed installations.21 8.4.1 Determination of the rated impulse voltage UNiby method 121 8.4.2 Distances of outdoor insulators22 Annex A (normative

26、) Tables.23 Annex B (normative) Provisions for type and routine dielectric tests for equipment 31 Annex C (normative) Methods of measuring creepage distances and clearances .33 Annex D (normative) Correlation between Unand UNm39 Annex E (informative) Macro-environmental conditions 40 Annex F (inform

27、ative) Application guide.41 Bibliography51 Figure F.1 Determination of minimum clearances and creepage distances.43 Figure F.2 Example for types of insulation .46 Figure F.3 Monitoring circuit showing examples of sections .48 Figure F.4 Drawing of monitoring device 48 Table A.1 Rated impulse voltage

28、 UNi for low voltage circuits not powered directly by the contact line .23 Table A.2 Rated impulse voltages (UNi) for circuits powered by the contact line and for traction power circuits in thermo-electric driven vehicles24 Table A.3 Minimum clearances in air (in mm) based on the rated impulse volta

29、ge UNi25 Table A.4 Definition of pollution degrees26 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.27 Table A.6 Minimum creepage distances (in mm) for low values of rated insulation voltage UNm fo

30、r materials other than printed wiring material 28 Table A.7 Minimum creepage distances (in mm/kV) for high values of rated insulation voltage UNm29 Table A.8 Test voltages for verifying clearances in air for an altitude of 2 000 m above sea level, not to be used for routine dielectric tests 30 Table

31、 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)32 Table C.1 Minimum dimensions of grooves 33 Table D.1 Correlation between nominal voltages of the railway power distribution system and the required insulat

32、ion voltages for circuits of equipment which are intended to be connected to these systems.39 Table F.1 Example for the determination of clearances and creepage distances 49 4 62497-1 IEC:2010 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ RAILWAY APPLICATIONS INSULATION COORDINATION Part 1: Basic requ

33、irements 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 electrotechnical committees (IEC National Committees). The object of IEC is t

34、o 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, Technical Reports, Publicly Available Specifications (PAS) and G

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43、 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 all such patent rights. International Standard IEC 62497-1 has be

44、en prepared by IEC technical committee 9: Electrical equipment and systems for railways. This standard is based on EN 50124-1. The text of this standard is based on the following documents: FDIS Report on voting 9/1335/FDIS 9/1358/RVD Full information on the voting for the approval of this standard

45、can be found in the report on voting indicated in the above table. 62497-1 IEC:2010 5 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 applications Insulation coordination, can be found of the IEC w

46、ebsite. 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 b

47、y a revised edition, or amended. 6 62497-1 IEC:2010 INTRODUCTION Special conditions occurring in railway applications and the fact that the equipment here concerned falls into the scope of both IEC 60071 (prepared by IEC technical committee 28) and IEC 60664-1 (prepared by IEC technical committee 10

48、9), led to the decision to draw from these documents and from IEC 60077-1 (prepared by IEC technical committee 9), a single document of reference for all standards applicable to the whole railway field. IEC 62497 consists of two parts: IEC 62497-1: Part 1: Basic requirements Clearances and creepage

49、distances for all electrical and electronic equipment; IEC 62497-2: Part 2: Overvoltages and related protection. This Part 1 allows, in conjunction with IEC 62497-2, to take into account advantages resulting from the presence of overvoltage protection when dimensioning clearances. 62497-1 IEC:2010 7 RAILWAY APPLICATIONS INSULATION COORDINATION Part 1: Ba