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1、| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | BRITISH STANDARD BS EN 50123-4:1999 The Eu
2、ropean Standard EN 50123-4:1999 has the status of a British Standard ICS 29.120.40; 29.280 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW Railway applications Fixed installations D.C. switchgear Part 4: Outdoor d.c. in-line switch-disconnectors, disconnectors and d.c. earthin
3、g switches Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 06 07:22:43 GMT+00:00 2006, Uncontrolled Copy, (c) BSI This British Standard, having been prepared under the direction of the Electrotechnical Sector Committee, was published under the authority of the Standards Committee and comes into
4、effect on 15 September 1999 BSI 09-1999 ISBN 0 580 32695 0 BS EN 50123-4:1999 Amendments issued since publication Amd. No.DateComments National foreword This British Standard is the English language version of EN 50123-4:1999. The UK participation in its preparation was entrusted by Technical Commit
5、tee GEL/9, Railway electrotechnical applications, to Subcommittee GEL/9/3, Fixed equipment, which has the responsibility to: aid enquirers to understand the text; present to the responsible European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests inf
6、ormed; monitor related international and European developments and promulgate them in the UK. A list of organizations represented on this subcommittee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European publications referred t
7、o in this document may be found in the BSI Standards Catalogue under the section entitled International Standards Correspondence Index, or by using the Find facility of the BSI Standards Electronic Catalogue. A British Standard does not purport to include all the necessary provisions of a contract.
8、Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 25 and a back cover. Th
9、e BSI copyright notice displayed in this document indicates when the document was last issued. Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 06 07:22:43 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EUROPEAN STANDARDEN 50123-4 NORME EUROPENNE EUROPISCHE NORMMarch 1999 ICS 29.120.60; 45.020 Englis
10、h version Railway applications Fixed installation D.C. switchgear Part 4: Outdoor d.c. in-line switch-disconnectors, disconnectors and d.c. earthing switches Applications ferroviaires Installations fixes Appareillage courant continu Partie 4: Interrupteurs-sectionneurs, sectionneurs et sectionneurs
11、de mise la terre pour l extrieur Bahnanwendungen Ortsfeste Anlagen Gleichstrom Schalteinrichtungen Teil 4: Freiluft-Gleichstrom-Lasttrennschalter, -Trennschalter und -Gleichstrom-Erdungsschalter This European Standard was approved by CENELEC on 1998-08-01. CENELEC members are bound to comply with th
12、e 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 the Central Secretariat o
13、r 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 Central Secretariat has the same status as the offic
14、ial versions. CENELEC members are the national electrotechnical committees of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CENELEC European Committee for
15、 Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Central Secretariat: rue de Stassart 35, B-1050 Brussels 1999 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref
16、. No. EN 50123-4:1999 E Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 06 07:22:43 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Page 2 EN 50123-4:1999 BSI 09-1999 Foreword This European Standard was prepared by SC 9XC, Electric supply and earthing systems for public transport equipment and ancill
17、ary apparatus (fixed installations), of Technical Committee CENELEC TC 9X, Electrical and electronic applications for railways. The text of the draft was submitted to the formal vote and was approved by CENELEC as EN 50123-4 on 1998-08-01. The following dates were fixed: latest date by which the EN
18、has to be implemented at national level by publication of an identical national standard or by endorsement(dop) 1999-10-01 latest date by which the national standards conflicting with the EN have to be withdrawn(dow) 1999-10-01 This part is to be used in conjunction with EN 50123-1:1995, Railway app
19、lications Fixed installations D.C. switchgear Part 1: General. Annexes designated “normative” are part of the body of the standard. Annexes designated “informative” are given for information only. In this standard, annex A is normative and annex B is informative. Licensed Copy: sheffieldun sheffield
20、un, na, Mon Nov 06 07:22:43 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Page 3 EN 50123-4:1999 BSI 09-1999 Contents Page Foreword2 1Scope4 2Normative references4 3Definitions5 4Service conditions5 5Characteristics of the unit5 5.1Enumeration of the characteristics5 5.2Type of unit5 5.3Rated values5 5
21、.4Class of use7 5.5Control circuits8 5.6Auxiliary contacts and circuits9 6Construction9 6.1General9 6.2Materials9 6.3Arcing contacts9 6.4Clearances and creepage distances9 6.5Primary connections9 6.6Location of the primary connections9 6.7Earthing terminal10 6.8Manual operation means10 6.9Unit housi
22、ngs10 6.10 Temperature rises10 6.11 Dielectric strength11 6.12 Mechanical and electrical endurance11 6.13 Operation11 6.14 Corrosion protection12 6.15 Noise emission12 6.16 Cooling12 6.17 Servo-control (where applicable)12 6.18 Other facilities12 7Information and marking12 7.1Information12 7.2Markin
23、g13 8Tests13 8.1General13 8.2Applicable tests and test sequence15 8.3Performance of tests15 Annex A (normative) Clearances and creepage distances23 Annex B (informative) Information required24 Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 06 07:22:43 GMT+00:00 2006, Uncontrolled Copy, (c) BSI
24、Page 4 EN 50123-4:1999 BSI 09-1999 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 traction systems. NOTE 1 EN 50121-5 specifies requirements for electromagnetic compatibility (E
25、MC). NOTE 2 EN 50126 specifies requirements for dependability. NOTE 3 In this document the word “unit” means “switch-disconnector and/or disconnector and/or earthing switch” as defined in 3.1.3, 3.1.4 and 3.1.5 of EN 50123-1:1995. 2 Normative references This European Standard incorporates by dated o
26、r undated reference, 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 this European Standard only
27、 when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies (including amendments). The normative references given in EN 50123-1:1995 apply with the following additions: EN 50123-2:1995, Railway applications Fixed installations
28、D.C. switchgear Part 2: D.C. circuit breakers. EN 50123-6:1998, Railway applications Fixed installations D.C. switchgear Part 6: D.C. switchgear assemblies. EN 50125, Railway applications Environmental conditions for equipment. EN 60129:1994, Alternating current disconnectors and earthing switches.
29、(IEC 60129:1986) EN 60529:1991, Degrees of protection provided by enclosures. (IP Code) (IEC 60529:1989) EN 60694:1996, Common specifications for high-voltage switchgear and controlgear standards. (IEC 60694:1996) HD 588.1 S1:1991, High voltage test techniques Part 1: General definitions and test re
30、quirements. (IEC 60060-1:1989) Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 06 07:22:43 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Page 5 EN 50123-4:1999 BSI 09-1999 3 Definitions The definitions given in EN 50123-1:1995 apply. 4 Service conditions The equipment covered in this document is ma
31、inly intended for outdoor installations. The requirements given for outdoor equipment in EN 50125-2 or in EN 60694:1996, 2.1.2 shall be used. In this European Standard, the pollution degree (PD) 4A (see EN 50124-1) is considered the normal condition. Where service conditions and environmental class
32、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 supplier shall confirm that the unit is suitable for the service conditions specified. 5 Characteristics of
33、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); class of use (5.4); auxiliary circuits (5.5). 5.2 Type of unit A unit shall be defined by the following
34、details (where applicable): number of poles; number of positions (if there are more than two); provision of an enclosure; degree of protection provided by the enclosure (see EN 60529). 5.3 Rated values 5.3.1 General Requirements for the rated characteristics shall be stated by the purchaser as far a
35、s the rating for voltages (5.3.2) and minimum acceptable values for rating for currents (5.3.3). These values shall be confirmed by the manufacturer, who shall indicate the limit values for the type of unit proposed, and shall be complemented with other data. All these values are to be stipulated in
36、 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 rated voltages: a) Nominal voltage (Un) See 3.2.1.1 of EN 50123-1, EN 50163 and Table 1. Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 06 07:22:43
37、GMT+00:00 2006, Uncontrolled Copy, (c) BSI Page 6 EN 50123-4:1999 BSI 09-1999 Table 1 Nominal voltages (Un), rated impulse voltages (UNi) and power-frequency a.c. voltage withstand levels (wet and dry) (Ua) for circuits connected to the contact line UnUNm OVUNi A 1,2/50 s UNi B 1,2/50 s Ua AUa B (kV
38、)(kV)(kV)(kV)(kV)(kV) 0,60,93 6 7,2 3,3 4 4 8 9,6 4,3 5,2 0,751,23 8 9,6 4,3 5,2 41214,4 6,5 7,8 1,631012 5,5 6,5 41518 8,510 1,52,331214,4 6,5 7,8 41821,61012 331518 8,510 420241112 34,8325301215 440482024 Underlined type figures are preferred values. UNi Figures are derived from Table A.2 of EN 50
39、124-1. Ua Figures are derived from Table B.1 of EN 50124-1. A To earth and between poles. B Across the isolating distance (not applicable to earthing switches). OV3 OV4 Overvoltage categories for equipment directly connected to the contact line. The choice depends on the risk of overvoltages (see 2.
40、2.2.1 of EN 50124-1). UNi Can be chosen to be higher than the figures stated above to cope with the insulation level of the contact line (see 6.3.1.2 of EN 50124-1). OV3 Recommended for inherently protected situations like tunnels or urban transportation systems. OV4 Recommended for other cases. NOT
41、E Guidance on wet test procedures is given in HD 588.1 S1. The rated impulse voltages are meant also for design purposes; test requirements and applicability are given in 8.3.3.2. b) System voltages and limits See 3.2.1 of EN 50123-1:1995 and Table 1. c) Rated voltage (UNe) See 3.2.3 and 5.1.3 of EN
42、 50123-1:1995. d) Rated insulation voltage (UNm) See 3.2.2 of EN 50123-1:1995 and Table 1. It shall be equal to or higher than Umax. e) Rated impulse withstand voltage (UNi) See 3.2.4 of EN 50123-1:1995 and Table 1. f) Power-frequency voltage withstand level (dry) (Ua) See 3.2.5 of EN 50123-1:1995 a
43、nd Table 1. The value, derived from EN 50124-1, is for a test in dry conditions, even though the units are used outdoors. Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 06 07:22:43 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Page 7 EN 50123-4:1999 BSI 09-1999 g) Power-frequency voltage withstand
44、 level (wet) (Ua) Where outdoor units can be subjected to rain, a wet test shall be performed. The value of the test voltage shall be the same as for a dry test unless otherwise agreed between the purchaser and the supplier. NOTE Guidance in performing the power-frequency wet test is given in HD 588
45、.1 S1. 5.3.3 Currents A unit is defined by the following rated currents: a) Rated conventional thermal current (Ith, Ithe) See 3.2.8 and 3.2.9 of EN 50123-1:1995. NOTE Earthing switches are not required to be assigned this rating. b) Rated service current (INe) See 3.2.10 of EN 50123-1:1995. c) Rate
46、d breaking and making capacity See 3.2.18 and 3.2.22 of EN 50123-1:1995. 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 1,2UNe. A rated breaking capacity requires the uni
47、t to be able to interrupt any current with a value lower than or equal to this rated breaking capacity. d) Rated short-time withstand current (INcw) See 3.2.11 of EN 50123-1:1995. 5.4 Class of use Switch-disconnectors shall close and open on-load, including highly inductive loads. The minimum breaki
48、ng, making and short-time withstand currents of the units shall be at least those given in Table 2 for the appropriate category. Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 06 07:22:43 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Page 8 EN 50123-4:1999 BSI 09-1999 Table 2 Categories of units C
49、ategoryCapacitiesShort-time withstand current (with tc = 10 ms) MakingBreakingCurrentDuration ms I00INcw250 II0INeINcw250 IIIINeINeINcw250 IV3INe3INeINcw250 VINss0INcw250 VIINss3INeINcw250 NOTE 1 Unless otherwise specified, INss has the same rating as INcw. NOTE 2 A typical application of the above categories is the following: Category I: Earthing switches and disconnectors used in locations where the purchaser has taken all precautions to inhibit making on to a fault current. Cat