1、BSI Standards PublicationBS EN 50526-3:2016Railway application Fixedinstallations D.C. surgearresters and voltage limitingdevicesPart 3: Application GuideBS EN 50526-3:2016 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN 50526-3:2016. The UK participation in its
2、 preparation was entrusted to TechnicalCommittee GEL/9/3, Railway Electrotechnical Applications - Fixed Equipment.A list of organizations represented on this committee can be obtained on request to its secretary.This publication does not purport to include all the necessary provisions of a contract.
3、 Users are responsible for its correct application. The British Standards Institution 2016.Published by BSI Standards Limited 2016ISBN 978 0 580 75610 8 ICS 29.120.50; 29.280 Compliance with a British Standard cannot confer immunity from legal obligations.This British Standard was published under th
4、e authority of the Standards Policy and Strategy Committee on 31 January 2016.Amendments/corrigenda issued since publicationDate T e x t a f f e c t e dBS EN 50526-3:2016EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 50526-3 January 2016 ICS 29.120.50; 29.280 English Version Railway applicatio
5、n - Fixed installations - D.C. surge arresters and voltage limiting devices - Part 3: Application Guide Applications ferroviaires - Installations fixes - Parafoudres et limiteurs de tension pour systmes courant continu - Partie 3: Guide dapplication Bahnanwendungen - Ortsfeste Anlagen - berspannungs
6、ableiter und Spannungsbegrenzungseinrichtung fr Gleichspannungsnetze - Teil 3: Anwendungsleitfaden This European Standard was approved by CENELEC on 2015-12-07. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Stand
7、ard the status of a national standard without any 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 (Eng
8、lish, French, German). A version in any other language 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 o
9、f Austria, Belgium, Bulgaria, Croatia, Cyprus, the 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, Slovakia, Slovenia
10、, Spain, Sweden, Switzerland, Turkey and 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 2016 CENELEC All righ
11、ts of exploitation in any form and by any means reserved worldwide for CENELEC Members. Ref. No. EN 50526-3:2016 E BS EN 50526-3:2016Content Page European foreword 4 Introduction 5 1 Scope . 6 2 Normative references . 6 3 Terms and definitions. 7 4 General considerations 13 4.1 General . 13 4.2 Appl
12、ication of surge arresters . 14 4.2.1 General . 14 4.2.2 Insulation level of equipment to be protected . 14 4.2.3 Internal overvoltages 14 4.2.4 Lightning Overvoltages 15 4.3 Application of VLDs 16 4.3.1 General . 16 4.3.2 Short term protection . 16 4.3.3 Long term protection 17 4.3.4 Selection of V
13、LD-F or VLD-O . 17 5 Symbols for surge arresters and VLDs 17 6 Guideline for Surge Arresters . 18 6.1 General . 18 6.1.1 Electrical characteristics . 18 6.1.2 Housing 19 6.1.3 Porcelain-housed surge arresters 19 6.1.4 Polymer-housed surge arresters 19 6.2 Systems and equipment to be protected by sur
14、ge arresters . 20 6.3 Nominal discharge current In. 23 6.4 Selection of Continuous Operating Voltage 23 6.4.1 Continuous operating voltage Ucfor arresters A1 23 6.4.2 Continuous operating voltage Ucfor arresters A2 24 6.5 Protective level of A1 and A2 arresters. . 24 6.6 Charge transfer capability .
15、 27 6.6.1 General . 27 6.6.2 Typical overvoltages during clearing a line fault 27 6.6.3 Arrester A1 33 6.6.4 Arrester A2 34 6.7 Procedure to select an A1 arrester . 34 6.8 Procedure to select an A2 arrester . 38 6.9 Connecting leads of arresters . 38 6.10 Earthing requirements 38 7 Guideline for VLD
16、s 39 7.1 Introduction . 39 7.2 General . 40 7.3 Mass transit railways and trams (Unup to d.c. 750 V) 40 7.3.1 General . 40 7.3.2 Trams with OCL 40 7.3.3 Metros with a conductor rail 42 7.3.4 Light-rail metros with OCLs . 43 7.4 Railways (d.c. 1 500V d.c. 3 000 V) . 43 7.4.1 General . 43 EN 50526-3:2
17、016 (E)BS EN 50526-3:20167.4.2 Application of VLDs along the lines or at the substations and in the sectioning posts . 43 7.4.3 Recommended characteristics of VLDs . 45 7.5 Workshops 46 7.5.1 Application of VLD-O 46 7.5.2 Application of VLD-F 46 8 Further considerations . 46 8.1 Installation recomme
18、ndations . 46 8.1.1 Mounting aspect . 46 8.1.2 Periodicity of inspection and management of alarms 48 8.1.3 Colours of the cables . 49 8.2 Interaction between arresters and VLDs 49 8.3 Interaction with other systems 49 8.3.1 Interaction with signalling systems 49 8.3.2 Interaction with earthing syste
19、ms . 50 8.3.3 Interaction with tunnel earthing systems . 50 8.3.4 Separation of a.c. cable screens . 50 Bibliography . 51 EN 50526-3:2016 (E)BS EN 50526-3:2016European foreword This document (EN 50526-3:2016) has been prepared by CLC/SC 9XC, “Electric supply and earthing systems for public transport
20、 equipment and ancillary apparatus (Fixed installations)“, of CLC/TC 9X, “Electrical and electronic applications for railways“. The following 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
21、 (dop) 2016-12-07 latest date by which the national standards conflicting with this document have to be withdrawn (dow) 2018-12-07 Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CENELEC and/or CEN shall not be held responsible fo
22、r identifying any or all such patent rights. EN 50526-3:2016 (E)BS EN 50526-3:2016Introduction This European Standard is divided into three parts. Part 1 deals with metal oxide arresters without gaps for d.c. railway traction systems (fixed installations) and is based on EN 60099-4. Part 2 deals wit
23、h voltage limiting devices for specific use in d.c. railway traction systems (fixed installations). Part 3 is a Guide of application of metal-oxide arresters and of voltage limiting devices. EN 50526-3:2016 (E)BS EN 50526-3:20161 Scope This Application Guide supports the European Standards EN 50526-
24、1 and EN 50526-2. Guidance is offered on the following subjects: the selection and installation of surge arresters; the selection and installation of voltage limiting devices as VLD-O and VLD-F; the arrangement of the surge arresters and VLDs. Because of differences in the established, proven method
25、s, electric traction systems of nominal voltage d.c. 600 V d.c. 750 V are treated separately from the systems at higher nominal voltages. This Application Guide only applies to d.c. electrified traction systems 2 Normative references The following documents, in whole or in part, are normatively refe
26、renced 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 50122-1:2011, Railway applications - Fixed installations - Electrical
27、safety, earthing and the return circuit - Part 1: Protective provisions against electric shock EN 50122-2:2010, Railway applications - Fixed installations - Electrical safety, earthing and the return circuit - Part 2: Provisions against the effects of stray currents caused by d.c. traction systems E
28、N 50123-2:2003, Railway applications - Fixed installations - D.C. switchgear - Part 2: D.C. circuit breakers EN 50123-7-1:2003, Railway applications - Fixed installations - D.C. switchgear - Part 7-1: Measurement, control and protection devices for specific use in d.c. traction systems - Application
29、 guide EN 50124-1:2001, Railway applications - Insulation coordination - Part 1: Basic requirements - Clearances and creepage distances for all electrical and electronic equipment EN 50163: 2004 , Railway applications - Supply voltages of traction systems EN 50526-1:2012, Railway applications - Fixe
30、d installations - D.C. surge arresters and voltage limiting devices - Part 1: Surge arresters EN 50526-2:2014, Railway applications - Fixed installations - D.C. surge arresters and voltage limiting devices - Part 2: Voltage limiting devices EN 62305-2, Protection against lightning - Part 2: Risk man
31、agement. IEC 60050-195:1998, International Electrotechnical Vocabulary - Chapter 195: Earthing and protection against electric shock IEC 60050-441:1984, International Electrotechnical Vocabulary - Chapter 441: Switchgear, controlgear and fuses IEC 60050-604:1987, International Electrotechnical Vocab
32、ulary. Chapter 604: Generation, transmission and distribution of electricity - Operation EN 50526-3:2016 (E)BS EN 50526-3:2016IEC 60050-811:1991, International Electrotechnical Vocabulary - Chapter 811: Electric traction 3 Terms and definitions For the purposes of this document, the following terms
33、and definitions apply. 3.1 nominal voltage Undesignated value for a system SOURCE: EN 50163:2004, 3.3 3.2 highest permanent voltage Umax1maximum value of the voltage likely to be present indefinitely SOURCE: EN 50163:2004, 3.4 3.3 highest non-permanent voltage Umax2maximum value of the voltage likel
34、y to be present for a limited period of time SOURCE: Adapted from EN 50163:2004, 3.5 3.4 rated insulation voltage UNmd.c withstand voltage value assigned by the manufacturer to the equipment or a part of it, characterising the specified permanent (over five minutes) withstand capability of its insul
35、ation SOURCE: EN 50526-1:2012, 3.4 3.5 rated impulse withstand voltage UNiimpulse voltage value assigned by the manufacturer to the equipment or a part of it, characterising the specified withstand capability of its insulation against transient overvoltages SOURCE: EN 50526-1:2012, 3.5 3.6 overvolta
36、ge voltage having a peak value exceeding the corresponding peak value of the highest non-permanent voltage Umax2SOURCE: EN 50526-1:2012, 3.6 3.7 transient overvoltage short duration overvoltage of a few (up to 20 ms) milliseconds or less associated with a transient regime Note 1 to entry: Two partic
37、ular transient overvoltages are defined: switching overvoltage and lightning overvoltage. SOURCE: EN 50526-1:2012, 3.7 EN 50526-3:2016 (E)BS EN 50526-3:20163.8 switching overvoltage Usotransient overvoltage at any point of the system due to specific switching operation or fault SOURCE: EN 50526-1:20
38、12, 3.8 3.9 lightning overvoltage transient overvoltage at any point of the system due to a lightning discharge SOURCE: EN 50124-1:2001,1.3.3.2.2 3.10 surge arrester device intended to limit the transient overvoltages to a specified level SOURCE: EN 50526-1:2012, 3.10 3.11 metal-oxide surge arrester
39、 arrester having non-linear metal-oxide resistors connected in series and/or in parallel without any integrated series or parallel spark gaps SOURCE: EN 50526-1:2012, 3.11 3.12 continuous operating voltage of an arrester Ucdesignated permissible d.c. voltage value that may be applied continuously be
40、tween the arrester terminals SOURCE: EN 50526-1:2012, 3.12 3.13 rated voltage of an arrester Urvoltage by which the arrester is designated Note 1 to entry: Because of the particular nature of the d.c. electrical installation dealt with, the rated voltage of a d.c. arrester coincides with the continu
41、ous operating voltage. SOURCE: EN 50526-1:2012, 3.13 3.14 lightning impulse protection level Uplthe maximum residual voltage for the nominal discharge current SOURCE: EN 50526-1:2012, 3.15 3.15 switching impulse protection level Upsmaximum residual voltage at the specified switching impulse current
42、SOURCE: EN 50526-1:2012, 3.16 EN 50526-3:2016 (E)BS EN 50526-3:20163.16 charge transfer capability QTmaximum charge per impulse that can be transferred during the charge transfer test and during the operating duty test SOURCE: EN 50526-1:2012, 3.17 3.17 discharge current of an arrester impulse curre
43、nt which flows through the arrester SOURCE: EN 50526-1:2012, 3.18 3.18 nominal discharge current of an arrester Inpeak value of lightning current impulse which is used to classify an arrester SOURCE: EN 50526-1:2012, 3.19 3.19 high current impulse of an arrester peak value of discharge current havin
44、g a 4/10 s impulse shape which is used to test the stability of the arrester on direct lightning strikes SOURCE: EN 50526-1:2012, 3.20 3.20 steep current impulse current impulse with a virtual front time of 1 s with limits in the adjustment of equipment such that the measured values are from 0,9 s t
45、o 1,1 s and the virtual time to half-value on the tail is not longer than 20 s SOURCE: EN 50526-1:2012, 3.21 3.21 lightning current impulse 8/20 s current impulse with limits on the adjustment of equipment such that the measured values are from 7 s to 9 s for the virtual front time and from 18 s to
46、22 s for the time to half-value on the tail SOURCE: EN 50526-1:2012, 3.22 3.22 direct lightning current impulse impulse defined by the charge Q and the peak value of the current impulse IimpSOURCE: EN 50526-1:2012, 3.23 3.23 switching current impulse of an arrester Iswpeak value of discharge current
47、 having a virtual front time greater than 30 s but less than 100 s and a virtual time to half value on the tail of roughly twice the virtual front time SOURCE: EN 50526-1:2012, 3.24 EN 50526-3:2016 (E)BS EN 50526-3:20163.24 porcelain-housed arrester arrester using porcelain as housing material, with
48、 fittings and sealing systems SOURCE: EN 50526-1:2012, 3.30 3.25 polymer-housed arrester arrester using polymeric and/or composite materials for housing SOURCE: EN 50526-1:2012, 3.31 3.26 flashover disruptive discharge over a solid surface SOURCE: EN 50526-1:2012, 3.44 3.27 impulse unidirectional wa
49、ve of voltage or current which without appreciable oscillations rises rapidly to a maximum value and falls usually less rapidly to zero with small, if any, excursions of opposite polarity Note 1 to entry: The parameters which define a voltage or current impulse are polarity, peak value, front time and time to half value on the tail. SOURCE: EN 50526-1:2012, 3.45 3.28 voltage-limiting device VLD protective device whose function is to prevent existence of an impermissible high touch voltage
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