1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN 50526-1:2012Railway applications Fixedinstallations D.C. surgearresters and voltage limitingdevices -Part 1: Surge arrestersBS EN 50526-1:2012 BRITISH STANDARDNational fore
2、wordThis British Standard is the UK implementation of EN 50526-1:2012.It supersedes BS EN 50123-5:2003 which is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee GEL/9/3, Railway Electrotechnical Applications - FixedEquipment.A list of organizations represented on
3、 this committee can beobtained on request to its secretary.This publication does not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. The British Standards Institution 2012ISBN 978 0 580 67139 5ICS 29.120.50; 29.280Compliance with a Brit
4、ish Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 31 January 2012.Amendments issued since publicationDate Text affectedBS EN 50526-1:2012EUROPEAN STANDARD EN 50526-1 NORME EUROPENNE EUROP
5、ISCHE NORM January 2012 CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Management Centre: Avenue Marnix 17, B - 1000 Brussels 2012 CENELEC - All rights of exploitation in any form and by
6、 any means reserved worldwide for CENELEC members. Ref. No. EN 50526-1:2012 E ICS 29.120.50; 29.280 Supersedes EN 50123-5:2003English version Railway applications - Fixed installations - D.C. surge arresters and voltage limiting devices - Part 1: Surge arresters Applications ferroviaires - Installat
7、ions fixes - Parafoudres et limiteurs de tension pour systmes courant continu - Partie 1: Parafoudres Bahnanwendungen - Ortsfeste Anlagen - berspannungsableiter und Niederspannungsbegrenzer - Teil 1: berspannungsableiter This European Standard was approved by CENELEC on 2011-10-10. CENELEC members a
8、re 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 any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to
9、 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 language made by translation under the responsibility of a CENELEC member into its own language and notified to the CEN-CENELEC Mana
10、gement Centre has the same status as the official versions. CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxemb
11、ourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. BS EN 50526-1:2012EN 50526-1:2012 2 Contents Foreword . 4 Introduction . 51 Scope . 62 Normative references . 63 Terms and definitions . 74 Characteristics
12、124.1 Marking . 124.2 Service conditions . 124.3 Requirements . 135 Arrester classification 146 Type test 146.1 General . 146.2 Insulation withstand tests on the arrester housing . 156.3 Residual voltage tests . 166.4 Charge transfer test 176.5 Operating duty tests 196.6 Short-circuit tests 246.7 In
13、ternal partial discharge tests 276.8 Bending moment test 286.9 Seal leak rate test . 336.10 Environmental tests 357 Routine tests and acceptance tests 367.1 Routine tests . 367.2 Acceptance tests 37Annex A (normative) Flowchart of testing procedure of bending moment . 38Annex B (normative)Direct lig
14、htning current impulse withstand test 39Bibliography 40Figures Figure 1 Impulse current Rectangular 18Figure 2 Power losses of the metal-oxide resistor at elevated temperatures versus time 20Figure 3 Circuit layout for short-circuit test (all leads and venting systems in the same plane) 25Figure 4 E
15、xample of a test circuit for re-applying pre-failing immediately before applying the short-circuit test current . 27Figure 5 Thermomechanical preconditioning 30Figure 6 Example of the arrangement for the thermo-mechanical preconditioning and directions of the cantilever load 31Figure 7 Water immersi
16、on test 32Figure 8 Definition of mechanical loads (base load = SSL) 33Figure 9 Surge arrester unit . 34Figure A.1 Flowchart of testing procedure of bending moment 38Tables Table 1 Arrester classification . 14Table 2 Type tests . 15Table 3 Peak currents for switching impulse residual voltage test 17T
17、able 4 Parameters for the charge transfer test 18Table 5 Determination of elevated continuous operating voltage . 21BS EN 50526-1:2012 3 EN 50526-1:2012 Table 6 Test procedure of operating duty test . 22Table 7 Requirements for high current impulses . 23Table 8 Required currents for short-circuit te
18、sts . 25Table B.1 Parameters for the direct lightning impulse . 39BS EN 50526-1:2012EN 50526-1:2012 4 Foreword This document (EN 50526-1:2012) has been prepared by SC 9XC, Electric supply and earthing systems for public transport equipment and ancillary apparatus (Fixed installations), of Technical
19、Committee CENELEC 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 (dop) 2012-10-10 latest date by which the nationa
20、l standards conflicting with this document have to be withdrawn (dow) 2014-10-10 This document supersedes EN 50123-5:2003. The existing standard EN 50123-5:2003 covers the case of the old technologies of the gapped arresters with SiC resistors and of the low voltage limiters (LVL) with gaps. These t
21、echnologies at present are superseded. The present standard deals with the new technologies of the gapless metal-oxide arresters and of the LV limiters for application in the electric railway d.c. fixed installations. Guidance for selection and application of SA and LVL is missing in the old standar
22、d while it is added in the third part of the new standard. As there is no standard available at the moment for surge arrester on rolling stock it seems convenient for the WG to note that the same electrical requirements apply for arresters on rolling stock, taking into account other specific require
23、ments. 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 for identifying any or all such patent rights. _ BS EN 50526-1:2012 5 EN 50526-1:2012 Introduction This European Standard is i
24、n three parts: - Part 1 deals with metal-oxide arresters without gaps for d.c. railway traction systems (fixed installations) and is based on EN 60099-4:2004 + A1:2006 + A2:2009; - Part 2 deals with voltage limiting devices for specific use in d.c. railway traction systems (fixed installations); - P
25、art 3 deals with a Guide of application of metal-oxide arresters and of voltage limiting devices. BS EN 50526-1:2012EN 50526-1:2012 6 1 Scope This European Standard applies to non-linear metal-oxide resistor type surge arresters without spark gaps designed to limit voltage surges on d.c. systems wit
26、h nominal voltage up to 3 kV. 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) appli
27、es. EN 50124-1:2001, Railway applications Insulation coordination Part 1: Basic requirements Clearances and creepage distances for all electrical and electronic equipment EN 50125-2:2002, Railway applications Environmental conditions for equipment Part 2: Fixed electrical installations EN 60060-1:20
28、10, High-voltage test techniques - Part 1: General definitions and test requirements (IEC 60060-1:2010) EN 60270:2001, High-voltage test techniques Partial discharge measurements (IEC 60270:2000) EN 61109:2008, Insulators for overhead lines Composite suspension and tension insulators for a.c. system
29、s with a nominal voltage greater than 1 000 V Definitions, test methods and acceptance criteria (IEC 61109:2008) EN ISO 4287:1998, Geometrical Product Specifications (GPS) - Surface texture: Profile method - Terms, definitions and surface texture parameters (ISO 4287:1997) EN ISO 4892-1:2000, Plasti
30、cs - Methods of exposure to laboratory light sources - Part 1: General guidance (ISO 4892-1:1999) EN ISO 4892-2:2006, Plastics - Methods of exposure to laboratory light sources - Part 2: Xenon-arc lamps (ISO 4892-2:2006) EN ISO 4892-3:2006, Plastics - Methods of exposure to laboratory light sources
31、- Part 3: Fluorescent UV lamps (ISO 4892-3:2006) BS EN 50526-1:2012 7 EN 50526-1:2012 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 nominal voltage Undesignated value for a system EN 50163:2004 3.2 highest permanent voltage Umax1maximum val
32、ue of the voltage likely to be present indefinitely EN 50163:2004 3.3 highest non-permanent voltage Umax2maximum value of the voltage likely to be present for a limited period of time NOTE Adapted from EN 50163:2004. 3.4 rated insulation voltage UNmd.c withstand voltage value assigned by the manufac
33、turer to the equipment or a part of it, characterising the specified permanent (over five minutes) withstand capability of its insulation NOTE Adapted from EN 50124-1:2001. 3.5 rated impulse withstand voltage UNiimpulse voltage value assigned by the manufacturer to the equipment or a part of it, cha
34、racterising the specified withstand capability of its insulation against transient overvoltages NOTE Adapted from EN 50124-1:2001. 3.6 overvoltage voltage having a peak value exceeding the corresponding peak value of the highest non-permanent voltage Umax23.7 transient overvoltage short duration ove
35、rvoltage of a few (up to 20 ms) milliseconds or less associated with a transient regime. Two particular transient overvoltages are defined: switching overvoltage and lightning overvoltage NOTE Adapted from EN 50124-1:2001. 3.8 switching overvoltage transient overvoltage at any point of the system du
36、e to specific switching operation or fault EN 50124-1:2001 3.9 lightning overvoltage transient overvoltage at any point of the system due to a lightning discharge EN 50124-1:2001 BS EN 50526-1:2012EN 50526-1:2012 8 3.10 surge arrester device intended to limit the transient overvoltages to a specifie
37、d level 3.11 metal-oxide surge arrester arrester having non-linear metal-oxide resistors connected in series and/or in parallel without any integrated series or parallel spark gaps 3.12 continuous operating voltage of an arrester Ucdesignated permissible d.c. voltage value that may be applied contin
38、uously between the arrester terminals NOTE Adapted from EN 60099-4:2004. 3.13 rated voltage of an arrester Urvoltage by which the arrester is designated NOTE Because of the particular nature of the d.c. electrical installation dealt with, the rated voltage of a d.c. arrester coincides with the conti
39、nuous operating voltage. 3.14 elevated continuous operating voltage Uc* test voltage Uc* that, when applied to new metal-oxide resistor, gives the same power losses as the voltage Ucwhen applied to aged metal-oxide resistors 3.15 lightning impulse protection level Uplthe maximum residual voltage for
40、 the nominal discharge current 3.16 switching impulse protection level Upsmaximum residual voltage at the specified switching impulse current 3.17 charge transfer capability Qtmaximum charge per impulse that can be transferred during the charge transfer test and during the operating duty test 3.18 d
41、ischarge current of an arrester impulse current which flows through the arrester 3.19 nominal discharge current of an arrester Inpeak value of lightning current impulse which is used to classify an arrester EN 60099-4:2004 3.20 high current impulse of an arrester peak value of discharge current havi
42、ng a 4/10 s impulse shape which is used to test the stability of the arrester on direct lightning strokes EN 60099-4:2004 BS EN 50526-1:2012 9 EN 50526-1:2012 3.21 steep current impulse current impulse with a virtual front time of 1 s with limits in the adjustment of equipment such that the measured
43、 values are from 0,9 s to 1,1 s and the virtual time to half-value on the tail is not longer than 20 s NOTE Adapted from EN 60099-4:2004. 3.22 lightning current impulse 8/20 current impulse with limits on the adjustment of equipment such that the measured values are from 7 s to 9 s for the virtual f
44、ront time and from 18 s to 22 s for the time to half-value on the tail EN 60099-4:2004 3.23 direct lightning current impulse impulse defined by the charge Q and the peak value of the current impulse Iimp3.24 switching current impulse of an arrester Iswpeak value of discharge current having a virtual
45、 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 EN 60099-4:2004 3.25 reference current of an arrester Irefd.c. current defined by the manufacturer used to determine the reference voltage of the arrester NOTE Adapt
46、ed from EN 60099-4:2004 3.26 reference voltage of an arrester Urefd.c. voltage across the arrester when the reference current is flowing through it NOTE Adapted from EN 60099-4:2004. 3.27 residual voltage of an arrester Urespeak value of voltage that appears between the terminals of an arrester duri
47、ng the passage of discharge current EN 60099-4:2004 3.28 rated short circuit current of an arrester Ismaximum current that may flow in case of an arrester failure for a specified time 3.29 shed insulating part projecting from the housing, intended to increase the creepage distance EN 60099-4:2004 3.
48、30 porcelain-housed arrester arrester using porcelain as housing material, with fittings and sealing systems EN 60099-4:2004 3.31 polymer-housed arrester arrester using polymeric and/or composite materials for housing NOTE Adapted from EN 60099-4.2004. BS EN 50526-1:2012EN 50526-1:2012 10 3.32 bendi
49、ng moment horizontal force acting on the arrester housing multiplied by the vertical distance between the mounting base (lower level of the flange) of the arrester housing and the point of application of the force EN 60099-4:2004 3.33 torsional loading horizontal force at the top of a vertical mount
