1、 IEC 62497-2 Edition 1.0 2010-02 INTERNATIONAL STANDARD NORME INTERNATIONALE Railway applications Insulation coordination Part 2: Overvoltages and related protection Applications ferroviaires Coordination de lisolement Partie 2: Surtensions et protections associes IEC 62497-2:2010 THIS PUBLICATION I
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16、ous: Email: csciec.ch Tl.: +41 22 919 02 11 Fax: +41 22 919 03 00 IEC 62497-2 Edition 1.0 2010-02 INTERNATIONAL STANDARD NORME INTERNATIONALE Railway applications Insulation coordination Part 2: Overvoltages and related protection Applications ferroviaires Coordination de lisolement Partie 2: Surten
17、sions et protections associes INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE M ICS 45.060 PRICE CODE CODE PRIX ISBN 2-8318-1078-3 Registered trademark of the International Electrotechnical Commission Marque dpose de la Commission Electrotechnique Internationale
18、2 62497-2 IEC:2010 CONTENTS FOREWORD.3 INTRODUCTION.5 1 Scope.6 2 Normative references .6 3 Terms and definitions .6 4 Contact line network.7 4.1 Equipment not protected by a metal-oxide arrester7 4.2 Equipment protected by a metal-oxide arrester7 4.2.1 General .7 4.2.2 Simulation for long pulse .8
19、4.2.3 Simulation for short pulse 8 5 Train line network.8 5.1 Equipment not protected by a metal-oxide arrester8 5.2 Equipment protected by a metal-oxide arrester8 6 Tests9 Annex A (informative) Maximum value of voltage U according to duration10 Bibliography12 Figure A.1 Maximum value of voltage U a
20、ccording to duration .10 Table 1 Values of the reference voltage U p 8 Table A.1 Overvoltages11 62497-2 IEC:2010 3 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ RAILWAY APPLICATIONS INSULATION COORDINATION Part 2: Overvoltages and related protection FOREWORD 1) The International Electrotechnical Commi
21、ssion (IEC) is a worldwide organization for standardization comprising all national electrotechnical 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 i
22、n addition to other activities, IEC publishes International Standards, Technical Specifications, Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee i
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24、ce with conditions determined by agreement between the two organizations. 2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international consensus of opinion on the relevant subjects since each technical committee has representation from all intere
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28、conformity. IEC is not responsible for any services carried out by independent certification bodies. 6) All users should ensure that they have the latest edition of this publication. 7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
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30、on or any other IEC Publications. 8) Attention is drawn to the Normative references cited in this 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 Publicati
31、on may be the subject of patent rights. IEC shall not be held responsible for identifying any or all such patent rights. International Standard IEC 62497-2 has been prepared by IEC technical committee 9: Electrical equipment and systems for railways. This standard is based on EN 50124-2. The text of
32、 this standard is based on the following documents: FDIS Report on voting 9/1336/FDIS 9/1359/RVD Full information on the voting for the approval of this standard can be found in the report on voting indicated in the above table. This publication has been drafted in accordance with the ISO/IEC Direct
33、ives, Part 2. 4 62497-2 IEC:2010 A list of all parts of IEC 62497 series, under the general title Railway applications Insulation coordination, can be found on the IEC website. The committee has decided that the contents of this publication will remain unchanged until the stability date indicated on
34、 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. 62497-2 IEC:2010 5 INTRODUCTION This International Standard is part of the series IEC 62497, Railw
35、ay applications Insulation coordination. IEC 62497 consists of two parts: IEC 62497-1: Part 1: Basic requirements Clearances and creepage distances for all electrical and electronic equipment; IEC 62497-2: Part 2: Overvoltages and related protection. This part 2 deals with the shortest durations of
36、overvoltages referred to as Zone A and Zone B in Figure A.1 in informative Annex A. 6 62497-2 IEC:2010 RAILWAY APPLICATIONS INSULATION COORDINATION Part 2: Overvoltages and related protection 1 Scope This part of IEC 62497 applies to: fixed installations (downstream the secondary of the substation t
37、ransformer) and rolling stock equipment linked to the contact line of one of the systems defined in IEC 60850; rolling stock equipment linked to a train line. This standard gives simulation and/or test requirements for protection against transient overvoltages of such equipment. Long-term overvoltag
38、es are not treated in this standard. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments
39、) applies. IEC 60099-1, Surge arresters Part 1: Non-linear resistor type gapped arresters for a.c. systems IEC 60099-4, Surge arresters Part 4: Metal-oxide surge arresters without gaps for a.c. systems IEC 60850, Railway applications Supply voltages of traction systems IEC 61992-5, Railway applicati
40、ons Fixed installations D.C. switchgear Part 5: Surge arresters and low-voltage limiters for specific use in d.c. systems UIC 550, Power supply installations for passenger stock 3 Terms and definitions For the purposes of this document, the following terms and definitions apply: 3.1 voltages 3.1.1 o
41、vervoltage any voltage having a peak value exceeding the corresponding peak value of maximum steady-state voltage at normal operating conditions 3.1.2 temporary overvoltage an overvoltage of relatively long duration due to voltage variations 62497-2 IEC:2010 7 NOTE A temporary overvoltage is indepen
42、dent of the network load. It is characterized by a voltage/time curve. 3.1.3 transient overvoltage A short duration overvoltage of a few milliseconds or less due to current transfer NOTE A transient overvoltage depends on the network load. It cannot be characterised by a voltage/time curve. Basicall
43、y, a transient overvoltage is the result of a current transfer from a source to the load (network). 3.1.3.1 switching overvoltage the transient overvoltage at any point of the system due to specific switching operation or fault IEC 60664-1, 3.7.3 3.1.3.2 lightning overvoltage the transient overvolta
44、ge at any point of the system due to a specific lightning discharge 3.2 network set of conductors fulfilling a certain function, the overvoltages of which are likely to damage the equipment they are connected to 4 Contact line network NOTE The provisions of this Clause 4 do not take into account rap
45、id transient overvoltages in the multimegahertz range such as generated by operation of vacuum circuit breakers which may require a specific overvoltage protection. 4.1 Equipment not protected by a metal-oxide arrester If the equipment is not protected by a metal-oxide arrester, the protection again
46、st overvoltages shall take into account overvoltages limited only by the intrinsic isolation of the contact line and the possible presence of other types of arrester or spark gaps. 4.2 Equipment protected by a metal-oxide arrester 4.2.1 General If the supplier wants to benefit from the presence of a
47、 metal-oxide arrester for reducing constraints resulting from 4.1, he shall perform a simulation of the behaviour of the protection against overvoltages. The circuits of the protected equipment likely to modify the electrical behaviour of the protection shall also be simulated. The equipment shall w
48、ithstand the pulses defined in 4.2.2 and 4.2.3, where the values of the reference voltage U pare defined in Table 1. 8 62497-2 IEC:2010 Table 1 Values of the reference voltage U pNominal network voltage according to IEC 60850 U nkV U pkV 0,75 4 1,5 6 3 12 15 60 20 80 25 100 25 110 a NOTE The values
49、of U p take into account the values of U res as given in IEC 60099- 1 and IEC 60099-4 and/or U p as given in IEC 61992-5. But they relate to a theoretical arrester, for simulation purposes only, and present not any direct link to U res of IEC 60099-1 and IEC 60099-4 and/or U p of IEC 61992-5. aSee footnote i to Table 1 of IEC 60850 regarding nominal voltage 25 kV. 4.2.2 Sim
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