EN 50124-1-2017 en Railway applications - Insulation coordination - Part 1 Basic requirements - Clearances and creepage distances for all electrical and electronic equipment.pdf

1、BS EN 50124-1:2017Railway applications Insulation coordinationPart 1: Basic requirements Clearances and creepage distances for all electrical and electronic equipmentBSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06BS EN 50124-1:2017 BRITISH STANDARDNational forewordT

2、his British Standard is the UK implementation of EN 50124-1:2017. It supersedes BS EN 50124-1:2001+A2:2005 which is withdrawn.The UK participation in its preparation was entrusted to Technical Committee GEL/9, Railway Electrotechnical Applications.A list of organizations represented on this committe

3、e can be obtained on request to its secretary.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2017.Published by BSI Standards Limited 2017ISBN 978 0 580 86076 8 ICS 29.080.01

4、; 29.280; 45.020 Compliance with a British Standard cannot confer immunity from legal obligations.This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 March 2017.Amendments/corrigenda issued since publicationDate T e x t a f f e c t e dBS EN 50

5、124-1:2017EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 50124-1 March 2017 ICS 29.080.01; 29.280 Supersedes EN 50124-1:2001English Version Railway applications - Insulation coordination - Part 1: Basic requirements - Clearances and creepage distances for all electrical and electronic equipmen

6、t Applications ferroviaires - Coordination de lisolement - Partie 1: Prescriptions fondamentales - Distances disolement dans lair et lignes de fuite pour tout matriel lectrique et lectronique Bahnanwendungen - Isolationskoordination - Teil 1: Grundlegende Anforderungen - Luft- und Kriechstrecken fr

7、alle elektrischen und elektronischen Betriebsmittel This European Standard was approved by CENELEC on 2017-02-06. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without a

8、ny alteration.Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CENELEC member. This European Standard exists in three official versions (English, French, German). A version in any other la

9、nguage made by translation under the responsibility of a CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions. CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, t

10、he Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and

11、 the United Kingdom. European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2017 CENELEC All rights of exploitation in any form and by an

12、y means reserved worldwide for CENELEC Members. Ref. No. EN 50124-1:2017 EBS EN 50124-1:2017EN 50124-1:2017 (E) 2 Contents Page European foreword . 5 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

13、.1.1 General . 11 4.1.2 Insulation coordination with regard to voltage 11 4.1.3 Insulation coordination with regard to environmental conditions 12 4.2 Voltages and voltage ratings 13 4.2.1 General . 13 4.2.2 Rated insulation voltage UNm13 4.2.3 Rated impulse voltage UNi. 13 4.3 Time under voltage st

14、ress. 14 4.4 Pollution . 14 4.5 Insulating material . 15 4.5.1 General . 15 4.5.2 Comparative tracking index (CTI) . 15 5 Requirements and dimensioning rules for clearances 16 5.1 General . 16 5.2 Minimum clearances 16 5.2.1 Functional insulation. 16 5.2.2 Basic and supplementary insulation 16 5.2.3

15、 Reinforced insulation 16 5.3 Contingency . 16 5.4 Clearances for altitudes higher than 2 000 m 17 6 Dimensioning rules for creepage distances . 17 6.1 General . 17 6.2 Minimum creepage distances . 17 6.2.1 Functional, basic and supplementary insulations . 17 6.2.2 Reinforced insulation 17 7 Tests a

16、nd measurements 18 7.1 General . 18 7.2 Measurement of creepage distances and clearances 18 7.2.1 Method and values 18 7.2.2 Acceptance criteria . 18 7.3 Verification of clearances by impulse test . 18 7.3.1 Method and values 18 7.3.2 Test acceptance criteria 19 7.4 Verification of clearances by pow

17、er-frequency test 19 7.4.1 Method and values 19 7.4.2 Test acceptance criteria 19 7.5 Verification of clearances by d.c. voltage test . 19 7.5.1 Method and values 19 BS EN 50124-1:2017EN 50124-1:2017 (E) 3 7.5.2 Test acceptance criteria 19 8 Specific requirements for applications in the railway fiel

18、d . 20 8.1 General . 20 8.2 Specific requirements for signalling 20 8.2.1 Overvoltage categories . 20 8.2.2 Rated impulse voltages . 21 8.2.3 Induced voltages . 21 8.2.4 Installation instructions 21 8.2.5 Pollution degrees 21 8.3 Specific requirements for rolling stock 21 8.3.1 Determination of the

19、rated impulse voltage UNiby method 1 21 8.3.2 Creepage distances . 22 8.3.3 Roof installations 22 8.4 Specific requirements for fixed installations . 22 8.4.1 Determination of the rated impulse voltage UNiby method 1 22 8.4.2 Distances of outdoor insulators . 23 Annex A (normative) Tables 24 Annex B

20、 (normative) Provisions for type and routine dielectric tests for equipment . 31 B.1 General . 31 B.2 Tests 31 Annex C (normative) Methods of measuring creepage distances and clearances . 33 Annex D (normative) Correlation between Unand UNm. 40 Annex E (informative) Macro-environmental conditions 41

21、 Annex F (informative) Application guide 42 F.1 Introduction . 42 F.2 Determination of minimum clearances and creepage distances . 42 F.3 Examples . 48 F.4 Tests 50 Annex ZZ (informative) Relationship between this European Standard and the Essential Requirements of EU Directive 2008/57/EC . 52 Bibli

22、ography 53 Tables Table A.1 Rated impulse voltage UNifor low voltage circuits not powered directly by the contact line . 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 clearanc

23、es in air for the standard altitude ranges based on the rated impulse voltage UNi. 26 Table A.4 Definition of pollution degrees 27 Table A.5 Minimum creepage distances based on rated insulation voltage UNmup to 1 000 V for printed wiring material and associated components 27 Table A.6 Minimum creepa

24、ge distances for low values of rated insulation voltage UNmfor materials other than printed wiring material . 28 BS EN 50124-1:2017EN 50124-1:2017 (E) 4 Table A.7 Minimum creepage distances (in mm/kV) for high values of rated insulation voltage UNm28 Table A.8 Test voltages for verifying clearances

25、at atmospheric and altitude reference conditions, not to be used for routine dielectric tests . 29 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 30 Table A.10 Altitude correction factors for clea

26、rances in circuits with UNihigher than 60 kV when equipment is intended to be used above 2 000 m . 30 Table B.1 Dielectric test for equipment - Short-duration power-frequency (a.c.) test levels Ua(kV) based on the rated impulse voltage UNi(kV) . 32 Table C.1 Minimum dimensions of grooves 33 Table D.

27、1 Correlation between nominal voltages of the railway power distribution system and the required insulation voltages for circuits of equipment which are intended to be connected to these systems 40 Table E.1 Correlation between pollution degrees and macro-environmental conditions . 41 Table F.1 Exam

28、ple for the determination of clearances and creepage distances . 50 Table ZZ.1 Correspondence between this European Standard, the TSI “Locomotives and Passenger Rolling Stock” (REGULATION (EU) No 1302/2014 of 18 November 2014) and Directive 2008/57/EC . 52 Table ZZ.2 Correspondence between this Euro

29、pean Standard, the TSI “Energy” (REGULATION (EU) No 1301/2014 of 18 November 2014) and Directive 2008/57/EC . 52 BS EN 50124-1:2017EN 50124-1:2017 (E) 5 European foreword This document (EN 50124-1:2017) has been prepared by CLC/TC 9X, “Electrical and electronic applications for railways.” The follow

30、ing dates are fixed: latest date by which this document has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 20180206 latest date by which the national standards conflicting with this document have to be withdrawn (dow) 20200206 This docume

31、nt supersedes EN 50124-1:2001, EN 50124-1:2001/A1:2003 and EN 50124-1:2001/A1:2005. EN 50124-1:2017 includes the following significant technical changes with respect to EN 50124-1:2001: the scope has been enlarged to include altitudes higher than 2 000 m above sea level; related requirements have be

32、en included, especially new subclause 5.4, Table A.9 and Table A.10. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CENELEC shall not be held responsible for identifying any or all such patent rights. This document has been prepa

33、red under a mandate given to CENELEC by the European Commission and the European Free Trade Association, and supports essential requirements of EU Directive(s). For the relationship with EU Directive(s) see informative Annex ZZ, which is an integral part of this document. BS EN 50124-1:2017EN 50124-

34、1:2017 (E) 6 Introduction Special conditions occurring in railway applications and the fact that the equipment here concerned falls into the scope of both the EN 60071 series (prepared by CLC/SR 28) and EN 60664-1 (prepared by CLC/SR 109), led to the decision to draw from these documents and from EN

35、 60077-1 (prepared by CLC/TC 9), a single document of reference for all standards applicable to the whole railway field. EN 50124 consists of two parts: EN 50124-1, Railway applications - Insulation coordination - Part 1: Basic requirements - Clearances and creepage distances for all electrical and

36、electronic equipment; EN 50124-2, Railway applications - Insulation coordination - Part 2: Overvoltages and related protection. This Part 1 allows, in conjunction with EN 50124-2, to take into account advantages resulting from the presence of overvoltage protection when dimensioning clearances. BS E

37、N 50124-1:2017EN 50124-1:2017 (E) 7 1 Scope This European Standard deals with insulation coordination in railways. It applies to equipment for use in signalling, rolling stock and fixed installations. Insulation coordination is concerned with the selection, dimensioning and correlation of insulation

38、 both within and between items of equipment. In dimensioning insulation, electrical stresses and environmental conditions are taken into account. For the same conditions and stresses, these dimensions are the same. An objective of insulation coordination is to avoid unnecessary over dimensioning of

39、insulation. This standard specifies: requirements for clearances and creepage distances for equipment; general requirements for tests pertaining to insulation coordination. The term equipment relates to a section as defined in 3.3 it may apply to a system, a sub-system, an apparatus, a part of an ap

40、paratus, or a physical realization of an equipotential line. This standard does not deal with: distances through solid or liquid insulation; distances through gases other than air; distances through air not at atmospheric pressure; equipment used under extreme conditions. Product standards should al

41、ign with this generic standard. However, they may require, with justification, different requirements due to safety and/or reliability reasons, e.g. for signalling, and/or particular operating conditions of the equipment itself, e.g. overhead contact lines which should comply with EN 50119. This sta

42、ndard also gives provisions for dielectric tests (type tests or routine tests) on equipment (see Annex B). NOTE For safety critical systems, specific requirements are needed. These requirements are given in the product specific signalling standard EN 50129. 2 Normative references The following docum

43、ents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 50123 (all parts), Rail

44、way applications - Fixed installations - D.C. switchgear EN 50163, Railway applications - Supply voltages of traction systems EN 60060-1, High-voltage test techniques - Part 1: General definitions and test requirements (IEC 60060-1) EN 60071-1, Insulation co-ordination - Part 1: Definitions, princip

45、les and rules (IEC 60071-1) EN 60112, Method for the determination of the proof and the comparative tracking indices of solid insulating materials (IEC 60112) BS EN 50124-1:2017EN 50124-1:2017 (E) 8 EN 60587, Electrical insulating materials used under severe ambient conditions - Test methods for eva

46、luating resistance to tracking and erosion (IEC 60587) EN 60664-1:2007, Insulation coordination for equipment within low-voltage systems - Part 1: Principles, requirements and tests (IEC 60664-1:2007) 3 Terms and definitions For the purposes of this document, the following terms and definitions appl

47、y. NOTE The definitions apply according to the following order of priority: the definition given here-under; the definition given in EN 606641; the definition given in the documents mentioned in Clause 2 other than EN 606641. 3.1 clearance shortest distance in air between two conductive parts 3.2 cr

48、eepage distance shortest distance along the surface of the insulating material between two conductive parts 3.3 Sections 3.3.1 section part of an electrical circuit having its own voltage ratings for insulation coordination Note 1 to entry: Sections fall into two categories: earthed section and floa

49、ting section. 3.3.2 earthed section section connected to earth or to the vehicle body through a circuit for which interruption is not expected 3.3.3 floating section section isolated from earth or from the vehicle body Note 1 to entry: A section can be under electrical influence from adjacent sections. Note 2 to entry: A particular point of a circuit can be considered as a section. 3.4 Voltages 3.4.1 nominal voltage Unsuitable approximate voltage value used to designate or identify a given supply system