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1、BRITISH STANDARD BS EN 50123-1:1996 Railway applications Fixed installations D.C. switchgear Part 1: General The European Standard EN 50123-1:1995 has the status of a British Standard Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 06 07:19:27 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 501
2、23-1:1996 This British Standard, having been prepared under the direction of the Electrotechnical Sector Board, was published under the authority of the Standards Board and comes into effect on 15 March 1996 BSI 08-1999 The following BSI references relate to the work on this standard: Committee refe
3、rence PEL/9 Draft for comment 93/202392 DC ISBN 0 580 24900 X Committees responsible for this British Standard The preparation of this British Standard was entrusted to Technical Committee PEL/9, Railway electrotechnical applications, upon which the following bodies were represented: British Cable M
4、akers Confederation Confederation of Passenger Transport UK Docklands Light Railway Federation of the Electronics Industry Health and Safety Executive London Underground Ltd. Power Supply Manufacturers Association PSMA (BEAMA Ltd.) Railtrack Railway Industry Association The following bodies were als
5、o represented in the drafting of the standard through subcommittees and panels: British Railways Board Transmission and Distribution Association (BEAMA Ltd.) Amendments issued since publication Amd. No.DateComments Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 06 07:19:27 GMT+00:00 2006, Uncon
6、trolled Copy, (c) BSI BS EN 50123-1:1996 BSI 08-1999i Contents Page Committees responsibleInside front cover National forewordii Foreword2 Introduction3 1Scope3 2Normative references3 3Definitions4 4Service conditions11 5Standard features and conventional assumptions11 6Temperature rise limits13 7Te
7、sts13 Annex A (normative) Diagram for tests16 Annex B (normative) Environmental conditions for outdoor installation17 Annex C (informative) Determination of the maximum energy-fault location19 Annex D (informative) Bibliography21 Figure A.1 Diagram of the test circuit for checking the making and bre
8、aking capacities in short-circuit conditions16 Figure A.2 Typical calibrations and interruption under short-circuit conditions17 Figure C.1 Equivalent circuit of a d.c. traction system20 Figure C.2 Ratio of I(maxE)/Iss to Ts/Tc20 Table 1 Test circuit parameters for maximum circuit energy11 Table 2 P
9、referred voltages for auxiliary and control circuits12 Table 3 Temperature-rise limits for insulated coils13 Table 4 Temperature-rise limits for various components14 List of referencesInside back cover Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 06 07:19:27 GMT+00:00 2006, Uncontrolled Copy,
10、 (c) BSI BS EN 50123-1:1996 ii BSI 08-1999 National foreword This British Standard has been prepared by Technical Committee PEL/9 and is the English language version of EN 50123-1:1995 Railway applications Fixed installations D.C. switchgear Part 1: General, published by the European Committee for E
11、lectrotechnical Standardization (CENELEC). A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations
12、. Cross-references Publication referred toCorresponding British Standard EN 60099-1:1994 BS EN 60099 Surge arrestors Part 1:1994 Non-linear resistor type gapped surge arrestors for a.c. systems EN 60507:1993BS EN 60507:1993 Artificial pollution tests on high voltage insulators to be used in a.c. sys
13、tems BS EN 60947 Specification for low-voltage switchgear and controlgear EN 60947-1:1991 + A11:1992 Part 1:1992 General rules EN 60747-2:1991 + A1:1993 Part 2:1992 Circuit breakers HD 448 S3:1995BS 6581:1995 Common clauses for high-voltage switchgear and controlgear standards HD 478 SeriesBS 7527 s
14、eries. Classification of environmental conditions BS 923 Guide on high-voltage testing techniques HD 588.1 S1:1991 (IEC 60-1:1989) Part 1:1990 General Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, the EN title page, pages 2 to 22, an inside back cover
15、 and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover. Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 06 07:19:27 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EUROPEA
16、N STANDARD NORME EUROPENNE EUROPISCHE NORM EN 50123-1 May 1995 ICS 29.120.60; 45.020 Descriptors: Railway fixed equipment, electric traction, d.c., electric switchgear, definition, operating requirements, heat limit, electric endurance test, heating test, dielectric strength test, generalities Engli
17、sh version Railway applications Fixed installations D.C. switchgear Part 1: General Applications ferroviaires Installations fixes Appareillage courant continu Partie 1: Gnralits Bahnanwendungen Ortsfeste Anlagen Gleichstrom-Schalteinrichtungen Teil 1: Allgemeines This European Standard was approved
18、by CENELEC on 1994-12-06. 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 any alteration. Up-to-date lists and bibliographical references concerning such national
19、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 a CENELEC member into its own language and
20、 notified to the Central Secretariat has the same status as the official versions. CENELEC members are the national electrotechnical committees of Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerla
21、nd and United Kingdom. CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Central Secretariat: rue de Stassart 35, B-1050 Brussels 1995 Copyright reserved to CENELEC members Ref. No. EN 5012
22、3-1:1995 E Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 06 07:19:27 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 50123-1:1995 BSI 08-1999 2 Foreword This European Standard was prepared by SC 9XC, Electric supply and earthing systems for public transport equipment and ancillary apparatus (fix
23、ed installations), of 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 50123-1 on 1994-12-06. The following dates were fixed: Annexes designated “normative”
24、 are part of the body of the standard. Annexes designated “informative” are given for information only. In this standard, Annex A and Annex B are normative and Annex C and Annex D are informative. In accordance with the Common CEN/CENELEC Rules, the following countries are bound to implement this Eu
25、ropean Standard: Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. latest date by which the EN has to be implemented at national level by publication of an identical national
26、 standard or by endorsement (dop);1995-12-01 latest date by which the national standards conflicting with the EN have to be withdrawn (dow);1995-12-01 Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 06 07:19:27 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 50123-1:1995 BSI 08-19993 Introduction
27、This European Standard consists of seven Parts. Part 1 gives general information related to d.c. switchgear and controlgear in fixed installations of railway applications. The other parts address the following specific equipment: Part 2: d.c. circuit breakers; Part 3: indoor d.c. switch-disconnector
28、s and d.c. disconnectors; Part 4: outdoor d.c. in-line switch-disconnectors and d.c. earthing switches; Part 5: surge arresters and low-voltage limiters for specific use in d.c. systems; Part 6: d.c. switchgear assemblies; Part 7: measurement, control and protection of d.c. traction systems. NOTECab
29、les and busbars external to switchgear assemblies or apparatus, contact lines, feeding lines, line supports and insulators are subject to other standards. 1 Scope This European Standard, consisting of seven Parts, specifies requirements for d.c. switchgear and controlgear and is intended to be used
30、in fixed electrical installations, with nominal voltage not exceeding 3 000 V d.c., which supply electrical power to vehicles for public guided transport, i.e. railway vehicles, tramway vehicles, underground vehicles and trolleybuses. NOTEIn 5.1.1.1 a restriction is shown in respect to the ripple fa
31、ctor of the supply. 2 Normative references This European Standard incorporates, by dated or undated reference, provisions from other publications. These normative references are cited at the appropriate places in the text and the publications are listed thereafter. For dated references, subsequent a
32、mendments to or revisions of any of these publications apply to this European Standard only when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies. NOTEA list of publications which may be of use is given in the informative A
33、nnex D: Bibliography. EN 50119199xaRailway applications Fixed installations Electric traction overhead contact lines systems General requirements EN 50121 seriesaRailway applications Electromagnetic compatibility (EMC) EN 50122-1 199xaRailway applications Fixed installations Part 1: Protective provi
34、sions relating to electrical safety and earthing EN 50124-1 199xaRailway applications Insulation co-ordination Part 1: Basic requirements Clearances and creepage distances EN 50126seriesaRailway applications Specification and demonstration of reliability, availability, maintainability and safety (RA
35、MS) EN 501631995Railway applications Supply voltages of traction systems EN 60099-1 1993Surge arresters Part 1: Non-linear resistor type gapped surge arresters for a.c. systems (IEC 99-1:1991) EN 605071993Artificial pollution tests on high voltage insulators to be used in a.c. systems (IEC 507:1991)
36、 EN 60947-1 1991Low-voltage switchgear and controlgear + A111992Part 1: General rules (IEC 947-1:1988, modified) EN 60947-2 1991Part 2: Circuit breakers (IEC 947-2:1991) + A11993(IEC 947-2:1991/A1:1992) HD 448 S31995Common clauses for high-voltage switchgear and controlgear standards (IEC 694:1980 +
37、 A1: 1985 + A2:1993) HD 478seriesClassification of environmental conditions HD 588.1 S1 1991High-voltage test techniques Part 1: General definitions and test requirements (IEC 60-1:1989) IEC 50(441) 1984International Electrical Vocabulary (IEV) Chapter 441: Switchgear, controlgear and fuses IEC 50(4
38、46) 1983Chapter 446: Electrical relays IEC 50(605) 1983Chapter 605: Generation, transmission and distribution of electricity Substations IEC 50(811) 1991Chapter 811: Electric traction a Document in preparation in February 1995 Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 06 07:19:27 GMT+00:00
39、 2006, Uncontrolled Copy, (c) BSI EN 50123-1:1995 4 BSI 08-1999 3 Definitions For the purposes of this standard, the definitions given in EN 60947, IEC 50(811), 50(441), 50(446) and 50(605) apply together with the following: 3.1 General terms 3.1.1 switching device a device designed to make or break
40、 the current in one or more electric circuits (IEC 50(441):1984, 14.01) 3.1.2 d.c. circuit breaker a switching device capable of making, carrying and breaking direct currents under normal circuit conditions and also making, carrying (up to a specified limit and for a specified time) and breaking cur
41、rents under specified abnormal conditions, such as those of short-circuit 3.1.3 d.c. disconnector a mechanical switching device, which provides, in the open position, for safety reasons, an isolating distance in accordance with specified requirements. The disconnector is capable of opening and closi
42、ng a circuit when either negligible d.c. current is broken or made, or when no significant change in the voltage across the terminals of the disconnector occurs. It is also capable of carrying d.c. currents under normal circuit conditions and carrying, for a specified time, currents under abnormal c
43、onditions such as those of short-circuit NOTE 1A disconnector is not suitable to make or break load current, fault current or other current arising from the effects of lightning or transient phenomena. NOTE 2A disconnector is only able to make or break current of very limited magnitude such as those
44、 arising from electrostatic charging or discharges across undamaged insulation. The ability to make or break minimum currents due to eventual marginal transient conditions of the network is subject to agreement between purchaser and supplier. 3.1.4 switch-disconnector a mechanical switching device c
45、apable of making, carrying and breaking currents in normal circuit conditions and, when specified, in given operating overload conditions. In addition it is able to carry, for a specified time, currents under specified abnormal circuit conditions, such as short-circuit conditions. In addition it com
46、plies with the requirements for a disconnector (see 3.1.3) when specified, a switch-disconnector may be designed for making short-circuit currents, but not to break the same NOTEOutdoor switch-disconnectors, in given special conditions, may be required to be suitable to break overload currents of sp
47、ecified amplitude. 3.1.5 earthing switch a mechanical switching device for earthing parts of the circuit, capable of withstanding for a specified time, currents under abnormal conditions such as those of short-circuit, but not required to carry currents under normal conditions of the circuit (IEC 50
48、(441):1984, 14.11) NOTEAn earthing switch may have a short-circuit making capacity (see 3.2.23). 3.1.6 operation the motion of the moving contact(s) from one position to another position, e.g. open to closed or open to earth NOTE 1This may be a closing operation or an opening operation. NOTE 2If a d
49、istinction is necessary, the terms “electrical operation” (e.g. make, break) and “mechanical operation” (e.g.: closing and opening) should be used. NOTE 3The position of a switching device where the continuity of the main circuit is assured is indicated as “closed” position. NOTE 4The position of a switching device where the prescribed distance between the contacts of the switching device is assured is indicated as “open” position. 3.1.7 operating cycle (of a mechanical switching device) a succession