1、BRITISH STANDARDBS EN 50123-6:2003Railway applications Fixed installations D.C. switchgear Part 6: D.C. switchgear assembliesICS 29.120.60; 45.020g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3
2、g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58+A1:2014National forewordThis British Standard is the UK implementation of EN 50123-6:2003+A1:2014. It supersedes BS EN 50123-6:2003 which is withdrawn.The start and finish of text introduced or altered by amendment is indicated in the text by tags. Tags
3、 indicating changes to CENELEC text carry the number of the CENELEC amendment. For example, text altered by CENELEC amendment A1 is indicated by !“.The UK participation in its preparation was entrusted by Technical Committee GEL/9, Railway Electrotechnical Applications, to Subcommittee GEL/9/3, Rail
4、way Electrotechnical Applications - Fixed Equipment.A list of organizations represented on this subcommittee can be obtained on request to its secretary.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application.Complian
5、ce with a British Standard cannot confer immunity from legal obligations.BS EN 50123-6:2003+A1:2014This British Standard, waspublished under the authorityof the Standards Policy andStrategy Committeeon 11 July 2003Amendments/corrigenda issued since publicationDate Comments 31 January 2015 Implementa
6、tion of CENELEC amendment A1:2014ISBN 978 0 580 76388 5 The British Standards Institution 2015.Published by BSI Standards Limited 2015EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Euro
7、pisches Komitee fr Elektrotechnische Normung Central Secretariat: rue de Stassart 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 50123-6:2003 E ICS 29.120.60; 45.020 English version Railway applications
8、 Fixed installations D.C. switchgear Part 6: D.C. switchgear assemblies Applications ferroviaires Installations fixes Appareillage courant continu Partie 6: Ensembles dappareillage Bahnanwendungen Ortsfeste Anlagen Gleichstrom-Schalteinrichtungen Teil 6: Gleichstrom-Schaltanlagen This European Stand
9、ard 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 bibliographical references concerni
10、ng 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 a CENELEC member into its
11、 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, Luxembourg, Malta, Nether
12、lands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and United Kingdom. EN 50123-6:2003+A1December 2014Foreword This European Standard was prepared by SC 9XC, Electric supply and earthing systems for public transport equipment and ancillary apparatus (fixed installations), of the Technical
13、 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 50123-6 on 2002-09-01. This European Standard supersedes EN 50123-6:1998. The following dates were fixed: - latest d
14、ate 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 6 is to be used in conjunction with EN
15、 50123-1:2003. Annexes designated “informative” are given for information only. In this standard, annex A is informative. _ This document (EN 50123-6:2003/A1:2014) has been prepared by CLC/SC 9XC “Electric supply and earthing systems for public transport equipment and ancillary apparatus (Fixed inst
16、allations)“. 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) 2015-11-17 latest date by which the national standards conflicting with this document have to be withdrawn (
17、dow) 2017-11-17 This amendment was elaborated to provide guidance to the requirement of 6.6.3, Internal arcing, that gas or vapour escaping under pressure does not endanger operating staff. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
18、rights. CENELEC and/or CEN shall not be held responsible for identifying any or all such patent rights. - 2 -BS EN 50123-6:2003+A1:2014 EN 50123-6:2003+A1:2014 (E)Foreword to amendment A1Contents Page 1 Scope 5 2 Normative references. 5 3 5 4 Service requirements .5 Characteristics of6 Construction
19、characteristics . 6 6.1 General . 6 6.2 Insulation requirements 7 6.3 Primary connections . 6.4 Location of the primary connections 8 6.5 Earthing 8 6.6 Degree of protection and internal fault. 9 6.7 Covers and doors 10 6.8 Inspection windows 11 6.9 Ventilating openings. 11 6.10 Partitions and shutt
20、ers. 11 6.11 Interlocks 13 6.12 Temperature-rises . 13 6.13 Dielectric strength. 14 6.14 Painting and finishing. 14 6.15 Noise emission 14 6.16 Cooling and heating 14 6.17 Operating temperature of auxiliary and control equipment 14 7 Information and marking 15 7.1 Information . 15 7.2 Marking 15 8 T
21、ests. 16 8.1 General . 16 8.2 List of the applicable tests 16 8.3 Performance of tests . 17 Terms and defi nitions!“6- 3 -BS EN 50123-6:2003+A1:2014 EN 50123-6:2003+A1:2014 (E)8Annex A (informative) Information required . 27 A.1 General. 27 A.2 Procurement specification 27 A.3 Manufacturers tender s
22、pecification . 29 A.4 Information and data to be supplied by the manufacturer during the delivery stage. 30 Figure 1 - Test arrangement for short time current withstand test on busbars . 26 Figure 2 - Test arrangement for temperature-rise test on main circuits 26 Figure 3 - Test arrangement for temp
23、erature-rise test on the busbars 26 Table 1 - Degrees of protection 10 Table 2 - List of applicable tests.17 - 4 -BS EN 50123-6:2003+A1:2014 EN 50123-6:2003+A1:2014 (E)Annex B (normative) Method for testing under conditions of arcing due to an internal fault 32B.1 Purpose of the test 32B.2 Character
24、istics Rated short-circuit current under internal arcing conditions (INarc) 32B.3 Test arrangements 33B.4 Test procedure 34B.5 Assessment of the test 36B.6 Test report 37Table B.1 - Sizes of the copper ignition wire 35Figure B.1 - Room simulation and indicator positioning, functional unit of fi tted
25、 with roof 38Figure B.2 - Mounting frame for vertical indicators 39Figure B.3 - Indicators arranged in a checkerboard pattern 39Figure B.4 - Room simulation and indicator positioning, functional unit of any height 40Bibliography 41!“!“! “.1 Scope This European Standard covers d.c. metal-enclosed and
26、 non-metallic enclosed switchgear assemblies used in indoor stationary installations of traction systems, with nominal voltage not exceeding 3 000 V. It is intended that individual items of equipment, for example circuit breakers, housed in the assembly are designed, manufactured and individually te
27、sted (simulating the enclosure when necessary) in accordance with their respective parts of EN 50123 or, when appropriate, with another applicable standard. NOTE 1 The requirements covered in this European Standard are those concerning the assembly as such, its enclosure and the mutual influence of
28、the equipment enclosed. NOTE 2 EMC requirements are covered by EN 50121-5 and additional requirements concerning dependability (RAMS) are covered by EN 50126. 2 Normative references This European Standard incorporates by dated or undated references, provisions from other publications. These normativ
29、e 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 amendment or revision. For undated referenc
30、es the latest edition of the publication referred to applies (including amendments). See EN 50123-1:2003. EN 50123-1:2003, Railway applications - Fixed installations - D.C. switchgear - Part 1: General!“3 Terms and defi nitionsFor the purposes of this document, the terms and defi nitions given in EN
31、 50123-1:2003 and the following apply.3.1 internal arcarcing within a switchgear assembly arising from a fault between active parts and/or between active parts and other conductive parts3.2 rated short-circuit current under internal arcing conditions (INarc)current, during the test duration/150 ms,
32、indicating the maximum allowable value of sustained short-circuit current at the terminals of the incoming unit for which the requirements of this test specifi cation are fulfi lledNote 1 to entry: The value is the maximum value of the prospective sustained short-circuit current.3.3 compartment unde
33、r testcompartment of a switchgear assembly which is subject to an internal arc test- 5 -BS EN 50123-6:2003+A1:2014 EN 50123-6:2003+A1:2014 (E)5 Characteristics of the assemblies The main characteristics of an assembly shall be indicated in the procurement specification as follows: a) type of the ass
34、embly enclosure; b) list of functional units enclosed; c) rated insulation voltages; d) rated values of the equipment enclosed as required in relevant standards; e) if constructed for an earth fault protection; f) detailed protection and control requirements (see EN 50123-7). Other important charact
35、eristics are listed in A.2. 6 Construction characteristics 6.1 General Enclosures are either metallic or non-metallic. Non-metallic enclosed switchgear shall not be used for nominal voltages above 1,5 kV. All requirements specified herein also apply when both conductive and insulating materials are
36、used, except for insulating clearances which shall be designed and tested as appropriate. A cell made of masonry shall not be considered as an enclosure, as far as this standard is concerned. The floor surface may be considered as part of an enclosure. The measures to be taken in order to obtain the
37、 degree of protection provided by floor surfaces shall be subject to an agreement between purchaser and supplier. The walls of a room shall not be considered as parts of the enclosure. Switchgear assemblies and relevant enclosures shall be designed so that normal service, inspection and maintenance
38、operations, earthing of connected cables or busbars, locating of cable faults, voltage tests on connected cables or other apparatus and the elimination of electrostatic charges, can be carried out easily and safely. 4 Service requirements Normal service requirements are detailed in clause 4 and Anne
39、x B of EN 50123-1 for indoor installations. 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 are considered to be the normal condition. - 6 -BS EN 50123-6:2003+A1:2014 EN 50123-6:2003+A1:2014 (E)European rul
40、es concerning noxious or toxic materials shall be observed. All identical devices, forming part of an assembly for a given use and with the same characteristics, shall be interchangeable. Withdrawable switching devices shall be prevented from insertion into functional units on the same switchgear as
41、sembly, having a different function or higher current ratings. Sufficient space shall be provided inside the compartments for the entry and termination of incoming cables without their minimum bending radii being infringed. The detachable parts of the protection enclosures shall be firmly attached t
42、o the fixed parts as specified in 6.7. Accidental untightening or detachment shall not occur because of the operation of the equipment. All apparatus and connections for the safe operation, control and protection of the equipment concerned, shall be provided whether or not specifically mentioned. Th
43、e equipment shall be adequately earthed, insulated, screened or enclosed as may be appropriate to ensure the protection of the equipment and safety of those concerned in its operation and maintenance. Control and auxiliary circuits and contacts shall comply with the requirements of 5.2 of EN 50123-1
44、. All components contained within the enclosure shall comply with their relevant standards. 6.2 Insulation requirements Test voltages and clearances are given in Table 1 of EN 50123-1. Recommended values for creepage distances are given in Annex D of EN 50123-1. The adverse effect of ionisation (due
45、 to arcs) on the clearances of other equipment in the assembly shall be taken into account. The minimum clearances between the arc chute of a switching device and metallic or non-metallic parts (i.e. above the arc chute and to the sides) shall be in accordance with those given by the switching devic
46、e manufacturer. Insulating material used to fully or partially line a metallic enclosure shall be firmly secured to the enclosure. In case of withdrawable units, where access within the enclosure is required during maintenance operations, the busbars and all other conductors shall be separated by a
47、barrier. Openings through such a barrier for the circuit and busbar connectors, etc., shall be shuttered and capable of being locked closed. All materials used shall be of the quality and of the class most suitable for working under the conditions specified. Special attention is to be paid to its ab
48、ility to withstand moisture and fire: unless Fire behaviour Class F0 is allowed (see Annex B of EN 50123-1), materials used shall be metallic or of the self extinguishing type, such that the risk of propagation of fire from one cubicle or compartment to another is minimised. The selection of materia
49、ls and the construction of the assembly shall be such that corrosion due to atmospheric and electrolytic effects are minimised. - 7 -BS EN 50123-6:2003+A1:2014 EN 50123-6:2003+A1:2014 (E)6.4 Location of the primary connections In case of non-withdrawable assemblies, the terminals for the primary connections shall be accessible with the functional units as in normal operating conditions. 6.5 Earthing NOTE Depending on the d.c. system earthing requirements, “earthing“ means connection either to earth or to the return circuit. 6.5.1 Earthing
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