1、Licensed Copy: Wang Bin, ISO/Exchange China Standards Information Centre, 09 October 2003, Uncontrolled Copy, (c) BSIBRITISH STANDARD BS EN 50123-4:2003 Railway applications Fixed installations D.C. switchgear Part 4: Outdoor d.c. disconnectors, switch-disconnectors and earthing switches The Europea
2、n Standard EN 50123-4:2003 has the status of a British Standard ICS 29.120.60; 45.020 Licensed Copy: Wang Bin, ISO/Exchange China Standards Information Centre, 09 October 2003, Uncontrolled Copy, (c) BSIBS EN 50123-4:2003 This British Standard, was published under the authority of the Standards Poli
3、cy and Strategy Committee on 11 July 2003 BSI 11 July 2003 ISBN 0 580 42249 6 National foreword This British Standard is the official English language version of EN 50123-4:2003. It supersedes BS EN 50123-4:1999 which is withdrawn. The UK participation in its preparation was entrusted by Technical C
4、ommittee GEL/9, Railway electrotechnical applications, to Subcommittee GEL/9/3, Fixed equipment, which has the responsibility to: A list of organizations represented on this subcommittee can be obtained on request to its secretary. Cross-references The British Standards which implement international
5、 or European publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online. This publication does not purport to i
6、nclude all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible international/European committee any en
7、quiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and 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 25 and a bac
8、k cover. The BSI copyright date displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. Date Comments Licensed Copy: Wang Bin, ISO/Exchange China Standards Information Centre, 09 October 2003, Uncontrolled Copy, (c) BSIEUROPEAN STANDARD EN
9、 50123-4 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 Stassart 35, B - 1050 Brussels 2003 CENELEC - All rights
10、 of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 50123-4:2003 E ICS 29.120.60; 45.020 Supersedes EN 50123-4:1999English version Railway applications Fixed installations D.C. switchgear Part 4: Outdoor d.c. disconnectors, switch-disconnectors and earth
11、ing switches Applications ferroviaires Installations fixes Appareillages courant continu Partie 4: Interrupteurs-sectionneurs, sectionneurs et sectionneurs de terre pour lextrieur Bahnanwendungen Ortsfeste Anlagen Gleichstrom-Schalteinrichtungen Teil 4: Freiluft-Gleichstrom-Trennschalter, -Lasttrenn
12、schalter und -Erdungsschalter 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-d
13、ate lists and bibliographical 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 unde
14、r the responsibility of 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, I
15、celand, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and United Kingdom. Licensed Copy: Wang Bin, ISO/Exchange China Standards Information Centre, 09 October 2003, Uncontrolled Copy, (c) BSIEN 50123-4:2003 2 Foreword This European Standard wa
16、s prepared by SC 9XC, Electric supply and earthing systems for public transport equipment and ancillary apparatus (fixed installations), of the Technical Committee CENELEC TC 9X, Electrical and electronic applications for railways. The text of the draft was submitted to the Unique Acceptance Procedu
17、re and was approved by CENELEC as EN 50123-4 on 2002-09-01. This European Standard supersedes EN 50123-4:1999. The following dates 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 - l
18、atest date by which the national standards conflicting with the EN have to be withdrawn (dow) 2005-09-01 This Part 4 is to be used in conjunction with EN 50123-1:2003. Annexes designated “informative” are given for information only. In this standard, annex A is informative. _ Licensed Copy: Wang Bin
19、, ISO/Exchange China Standards Information Centre, 09 October 2003, Uncontrolled Copy, (c) BSI 3 EN 50123-4:2003 Contents Page 1 Scope 5 2 Normative references 5 3 Definitions 5 4 Service requirements 5 5 Characteristics of the unit 5 5.1 Enumeration of the characteristics 5 5.2 Type of unit . 6 5.3
20、 Rated values 6 5.4 Class of use . 7 5.5 Control circuits 8 5.6 Auxiliary contacts and circuits 9 6 Construction 9 6.1 General 9 6.2 Materials 9 6.3 Arcing contacts 9 6.4 Clearances and creepage distances 9 6.5 Primary connections10 6.6 Location of the primary connections. 10 6.7 Earthing terminal.
21、10 6.8 Manual operation means . 10 6.9 Unit enclosure. 10 6.10 Temperature-rises 10 6.11 Dielectric strength. 11 6.12 Electrical and mechanical endurance 11 6.13 Operation. 12 6.14 Corrosion protection 13 6.15 Noise emission 13 6.16 Cooling 13 6.17 Servo-control (where applicable) 13 6.18 Other faci
22、lities. 13 7 Information and marking 14 7.1 Information 14 7.2 Marking. 14 8 Tests . 15 8.1 General 15 8.2 Applicable tests and test sequence 15 8.3 Performance of tests 17 Licensed Copy: Wang Bin, ISO/Exchange China Standards Information Centre, 09 October 2003, Uncontrolled Copy, (c) BSIEN 50123-4
23、:2003 4 Annex A (informative) Information required. 23 A.1 General. 23 A.2 Procurement specification 23 A.3 Manufacturers specification 23 Table 1 Categories of units. 8 Table 2 - List of applicable tests and sequence . 16 Table 3 Recommended quantities and dimensions of copper bars 19 Licensed Copy
24、: Wang Bin, ISO/Exchange China Standards Information Centre, 09 October 2003, Uncontrolled Copy, (c) BSI 5 EN 50123-4:2003 1 Scope This part of EN 50123 specifies requirements for outdoor d.c. switch-disconnectors, disconnectors and earthing switches for use in outdoor fixed installations of tractio
25、n systems. NOTE 1 EN 50121-5 specifies requirements for electromagnetic compatibility (EMC). NOTE 2 In this document the word “unit“ means “switch-disconnector and/or disconnector and/or earthing switch“ as defined in 3.1.4, 3.1.5 and 3.1.6 of EN 50123-1. 2 Normative references This European Standar
26、d incorporates by dated or undated references, provisions from 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 t
27、his European Standard only when incorporated in it by amendment 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 5
28、0123-1 apply. 4 Service requirements The equipment covered in this standard is mainly intended for outdoor installations. The requirements given for outdoor equipment in EN 50125-2 or in 2.1.2 of EN 60694 may be used and EN 50119 may be taken into account. In this standard the pollution degree PD 4A
29、 (see EN 50124-1) is considered as normal condition. Where service requirements and environmental class differ from those defined in the above standards, require to be specified or a particular environmental class is required, the purchaser shall state this fact in the tender specification. The supp
30、lier shall confirm that the unit is suitable for the service requirements specified. 5 Characteristics of the unit 5.1 Enumeration of the characteristics The characteristics of the unit and its assigned designations and values (where applicable) are as follows: type of unit (5.2); rated values (5.3)
31、; Licensed Copy: Wang Bin, ISO/Exchange China Standards Information Centre, 09 October 2003, Uncontrolled Copy, (c) BSIEN 50123-4:2003 6 class of use (5.4); control circuits (5.5). 5.2 Type of unit A unit shall be defined by the following details (where applicable): whether the unit is a switch disc
32、onnector, disconnector, earthing switch or a combination of these types; number of poles; number of positions (if there are more than two); provision of an enclosure; degree of protection provided by the enclosure, if any (see EN 60529). 5.3 Rated values 5.3.1 General The rated characteristic values
33、 shall be specified by the purchaser. Rated insulation voltage values shall be selected from the values indicated in Table 1 of EN 50123-1; current values should have one of the preferred values in 5.1.2 of EN 50123-1. These values shall be confirmed by the manufacturer, who shall indicate the rated
34、 values for the type of unit proposed, and shall be complemented with other data. All these values are to be stipulated in accordance with 5.3.2 to 5.3.4, but it is not necessary to specify all the listed rated values. 5.3.2 Voltages A unit is defined by the following voltages. The nominal voltages
35、and the system voltages and limits shall be taken from EN 50163. The insulation values shall be taken from Table 1 of EN 50123-1: nominal voltage U n(see 3.2.1.1 of EN 50123-1); system voltages and limits (see 3.2.1.2 of EN 50123-1); rated voltage U Ne(see 3.2.3 of EN 50123-1); rated insulation volt
36、age U Nm(this value shall be equal to or higher than U max ) (see 3.2.2 of EN 50123-1); rated impulse withstand voltage U Ni(see 3.2.4 of EN 50123-1); power-frequency voltage withstand level (dry and wet) U a(see 3.2.5 of EN 50123-1); auxiliary and control supply voltages (see 3.2.3.1 of EN 50123-1)
37、. Licensed Copy: Wang Bin, ISO/Exchange China Standards Information Centre, 09 October 2003, Uncontrolled Copy, (c) BSI 7 EN 50123-4:2003 5.3.3 Currents A unit is defined by the following currents. The current values shall be selected taking into account 5.1 of EN 50123-1: conventional thermal curre
38、nt I th , I the(see 3.2.8 and 3.2.9 of EN 50123-1); NOTE 1 Earthing switches are not required to be assigned this rating. rated service current I Ne(see 3.2.10 of EN 50123-1); NOTE 2 Earthing switches are not required to be assigned this rating. rated breaking and making capacity (see 3.2.18 and 3.2
39、.22 of EN 50123-1); Switch-disconnectors and those disconnectors for which the manufacturer declares a making capacity, shall be able to make the stated prospective current at a voltage U equal to 1,2 U Ne . A rated breaking capacity requires the unit to be able to interrupt any current of a value l
40、ower than or equal to this rated breaking capacity. rated short-time withstand current I Ncw(see 3.2.11 of EN 50123-1); overload capability: the purchaser shall inform the supplier of the load cycle requirements (see 3.2.10, note 2 of EN 50123-1). 5.4 Class of use Disconnectors shall close and open
41、at no-load except if otherwise declared by the manufacturer. Switch-disconnectors shall close and open on-load, including highly inductive loads. Both devices have either electrically latched or mechanically latched mechanisms. The minimum breaking, making and short-time withstand currents of the un
42、its shall be at least those given in Table 1 for the appropriate category. Licensed Copy: Wang Bin, ISO/Exchange China Standards Information Centre, 09 October 2003, Uncontrolled Copy, (c) BSIEN 50123-4:2003 8 Table 1 Categories of units Category Capacities (with t c 0,01 s) Short-time withstand cur
43、rent Making Breaking Current Duration I 0 0 I Ncw /I Ncwe0,25 s II 0 I NeI Ncw0,25 s III I NeI NeI Ncw0,25 s IV 3 I Ne3 I NeI Ncw0,25 s V I Nss0 I Ncw /I Ncwe0,25 s VI I Nss3 I NeI Ncw0,25 s NOTE 1 Unless otherwise specified I Nsshas the same rating as I Ncwand I Ncwefor earthing switches. NOTE 2 A
44、typical application of the above categories is the following: Category I: Disconnector and earthing switch used in locations where the purchaser has taken all precautions to inhibit making on to a fault current. Category II: Switch disconnector required for breaking load current only. Category III:
45、Switch-disconnector in series with the feeder, required for making and breaking the rated current only. Category IV: Switch-disconnector as in III, but required for making and breaking the train starting current. Category V: Disconnector and earthing switch used in locations where the possibility ex
46、ists of an inadvertent make on to a fault current. Category VI: Switch-disconnector as in IV, but required for making on to a fault current. NOTE 3 For definition of t csee 3.2.15 of EN 50123-1. 5.5 Control circuits The control circuits are identified by the following: the voltage of the control cir
47、cuits; the kind of current (d.c. or a.c.); the frequency, in case of a.c. The voltage of the supply source and its frequency are the values on which the performance, the thermal behaviour and the insulation characteristics are based. Unless otherwise required, the voltage shall be in accordance with
48、 5.2 of EN 50123-1 and the rated insulation voltage shall be in accordance with EN 50124-1. The supply voltage shall remain within 80 % and 110 % of the voltage in accordance with 5.2 of EN 50123-1. When the control voltage is the same as in the main circuit, the same variations as in the main circu
49、it apply. Licensed Copy: Wang Bin, ISO/Exchange China Standards Information Centre, 09 October 2003, Uncontrolled Copy, (c) BSI 9 EN 50123-4:2003 The manufacturer shall indicate the value(s) of the current drawn by the control circuits at the specified voltage(s). In case of control circuits which draw current intermittently, the duration of the current flow shall be given
