EN 50123-7-2-2003 en Railway applications Fixed installations D C switchgear Part 7-2 Measurement control and protection devices for specific use in d c traction systems Isolating .pdf
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1、BRITISH STANDARD BS EN 50123-7-2:2003 Railway applications Fixed installations D.C. switchgear Part 7-2: Measurement, control and protection devices for specific use in d.c. traction systems Isolating current transducers and other current measuring devices The European Standard EN 50123-7-2:2003 has
2、 the status of a British Standard ICS 29.280 BS EN 50123-7-2:2003 This British Standard, was published under the authority of the Standards Policy and Strategy Committee on 11 July 2003 BSI 11 July 2003 ISBN 0 580 42253 4 National foreword This British Standard is the official English language versi
3、on of EN 50123-7-2:2003. It supersedes BS EN 50123-7-2:1999 which is withdrawn. The UK participation in its preparation was entrusted by Technical Committee GEL/9, Railway electrotechnical applications, to Subcommittee GEL/9/3, Fixed equipment, which has the responsibility to: A list of organization
4、s represented on this subcommittee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Corresponde
5、nce Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard does not of its
6、elf confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and
7、promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 8, an inside back cover and a back cover. The BSI copyright date displayed in this document indicates when the document was last issued. Amendments issued since pub
8、lication Amd. No. Date CommentsEUROPEAN STANDARD EN 50123-7-2 NORME EUROPENNE EUROPISCHE NORM February 2003 CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Central Secretariat: rue de Sta
9、ssart 35, B - 1050 Brussels 2003 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 50123-7-2:2003 E ICS 29.280 Supersedes EN 50123-7-2:1999English version Railway applications Fixed installations D.C. switchgear Part 7-2: Measuremen
10、t, control and protection devices for specific use in d.c. traction systems Isolating current transducers and other current measuring devices Applications ferroviaires Installations fixes Appareillage courant continu Partie 7-2: Appareils de mesure, de commande et de protection pour usage spcifique
11、dans les systmes de traction courant continu Transducteurs et autres appareils de mesure de courant Bahnanwendungen Ortsfeste Anlagen Gleichstrom-Schalteinrichtungen Teil 7-2: Mess-, Steuer- und Schutzeinrichtungen in Gleichstrom- Bahnanlagen Messumformer fr Strommessung und andere Strommesseinricht
12、ungen This European Standard was approved by CENELEC on 2002-09-01. 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 any alteration. Up-to-date lists and bibliograp
13、hical references concerning such national standards may be obtained on application to the Central Secretariat 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
14、a CENELEC member into its own language and notified to the Central Secretariat has the same status as the official versions. CENELEC members are the national electrotechnical committees of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy,
15、Luxembourg, Malta, Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and United Kingdom. EN 50123-7-2:2003 - 2 - Foreword This European Standard was prepared by SC 9XC, Electric supply and earthing systems for public transport equipment and ancillary apparatus (fixed installations)
16、, of the Technical Committee CENELEC TC 9X, Electrical and electronic applications for railways. The text of the draft was submitted to the Unique Acceptance Procedure and was approved by CENELEC as EN 50123-7-2 on 2002-09-01. This European Standard supersedes EN 50123-7-2:1999. The following dates
17、were fixed: - latest date by which the EN has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2003-09-01 - latest date by which the national standards conflicting with the EN have to be withdrawn (dow) 2005-09-01 This Part 7-2 is to be use
18、d in conjunction with EN 50123-1:2003. _ - 3 - EN 50123-7-2:2003 Contents Page 1 Scope . 4 2 Normative references. 4 3 Definitions 4 4 Service requirements. 4 5 Characteristics . 5 5.1 Electrical characteristics 5 5.2 Mechanical characteristics. 6 6 Information to be exchanged between purchaser and
19、supplier 7 7 Tests 7 7.1 Dielectric tests 7 7.2 Calibration test. 7 7.3 Other tests 8 7.4 EMC tests. 8 EN 50123-7-2:2003 - 4 - 1 Scope This European Standard gives the requirements for isolating current transducers and other current measuring devices used in d.c. railway applications, fixed installa
20、tions. This transducer is normally positioned between the sensor in the live switchboard conductor or rail and the secondary device, giving galvanic insulation between the input and the output. 2 Normative references This European Standard incorporates by dated or undated references, provisions from
21、 other publications. These normative references are cited at the appropriate places in the text and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply to this European Standard only when incorporated in it by amendmen
22、t or revision. For undated references the latest edition of the publication referred to applies (including amendments). See EN 50123-1:2003. 3 Definitions For the purposes of this European standard the terms and definitions given in EN 50123-1 apply. 4 Service requirements Where the equipment descri
23、bed in this standard is mounted on devices or in assemblies covered by the EN 50123 series , then the service conditions of the devices or assemblies apply. In this European standard the pollution degree PD4 and overvoltage categories (see notes to Table 1 of EN 50123-1), as described in EN 50124-1,
24、 are considered to be normal conditions. The normal service requirements are given in Annex B of EN 50123-1. 5 Characteristics 5.1 Electrical characteristics 5.1.1 General The isolating transducer has an insulation level between its primary terminals and secondary terminals which is the same as that
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