1、BRITISH STANDARDBS EN 50123-3:2003Railway applications Fixed installations D.C. switchgear Part 3: Indoor d.c. disconnectors, switch-disconnectors and earthing switchesICS 29.120.40; 45.020g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g5
2、1g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58+A1:2013National forewordThis British Standard is the UK implementation of EN 50123-3:2003+A1:2013. It supersedes BS EN 50123-3:2003 which is withdrawn.The UK participation in its preparation was entrusted by Te
3、chnical CommitteeGEL/9, Railway Electrotechnical Applications to Subcommittee GEL/9/3, Railway 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 neces
4、sary provisions of a contract. Users are responsible for its correct application.Compliance with a British Standard cannot confer immunity from legal obligations.BS EN 50123-3:2003+A1:2013This British Standard, waspublished under the authorityof the Standards Policy andStrategy Committeeon 11 July 2
5、003 The British StandardsInstitution 2013. Publishedby BSI Standards Limited2013Amendments/corrigenda issued since publicationDate Comments 31 October 2013 Implementation of CENELEC amendment A1:2013: subclause 5.3.3 modifiedISBN 978 0 580 82865 2EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM CEN
6、ELEC 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 of exploitation in any form and by any means reserved wor
7、ldwide for CENELEC members. Ref. No. EN 50123-3:2003 E ICS 29.160.60; 45.020 English version Railway applications Fixed installations D.C. switchgear Part 3: Indoor d.c. disconnectors, switch-disconnectors and earthing switches Applications ferroviaires Installations fixes Appareillages courant cont
8、inu Partie 3: Interrupteurs-sectionneurs, sectionneurs et sectionneurs de terre pour lintrieur Bahnanwendungen Ortsfeste Anlagen Gleichstrom-Schalteinrichtungen Teil 3: Gleichstrom-Trennschalter, -Lasttrennschalter und -Erdungsschalter fr Innenrume This European Standard was approved by CENELEC on 2
9、002-09-01. 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 concerning such national standards may b
10、e 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 notified to th
11、e 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, Netherlands, Norway, Portugal, Slovaki
12、a, Spain, Sweden, Switzerland and United Kingdom. EN 50123-3:2003+A1October 2013 2 Foreword 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 Committee CENELEC TC 9X, Elec
13、trical and electronic applications for railways. The text of the draft was submitted to the Unique Acceptance Procedure and was approved by CENLEC as EN 50123-3 on 2002-09-01. This European Standard supersedes EN 50123-3:1995 + corrigendum September 1996. It has been prepared taking into account IEC
14、 61992-3 in order to align technically as much as possible this EN 50123-3 and IEC 61992-3. These documents are to be considered as technically equivalent except for those references and peculiarities which are due to the European standardisation in the railway application field. The following dates
15、 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 3 is to be used
16、 in conjunction with EN 50123-1:2003. Annexes designated “informative” are given for information only. In this standard, annex A is informative. _ Foreword to amendment A1BS EN 50123-3:2003+A1:2013 EN 50123-3:2003+A1:2013 (E)This document (EN 50123-3:2003/A1:2013) has been prepared by CLC/SC 9XC “El
17、ectric supply and earthing systems for public transport equipment and ancillary apparatus (Fixed installations)“, of Technical Committee CLC/TC 9X “Electrical and electronic applications for railways“. The following dates are fixed: latest date by which this document has to be implemented at nationa
18、l level by publication of an identical national standard or by endorsement (dop) 2014-08-26 latest date by which the national standards conflicting with this document have to be withdrawn (dow) 2016-08-26 Attention is drawn to the possibility that some of the elements of this document may be the sub
19、ject of patent rights. CENELEC and/or CEN shall not be held responsible for identifying any or all such patent rights. 3 Contents 1 Scope .4 2 Normative references4 3 Definitions.4 4 Service requirements 4 5 Characteristics of the unit4 5.1 Enumeration of the characteristics4 5.2 Type of unit .5 5.3
20、 Rated values 5 5.4 Class of use6 5.5 Control circuits 7 5.6 Auxiliary contacts and circuits .8 6 Construction .8 6.1 General 8 6.2 Unit enclosures 10 6.3 Temperature-rises 10 6.4 Dielectric strength 10 6.5 Electrical and mechanical endurance 10 6.6 Operation. 11 6.7 Corrosion protection 12 6.8 Nois
21、e emission. 12 6.9 Cooling 12 6.10 Servo-control (where applicable) 12 6.11 Other facilities . 12 7 Information and marking. 13 7.1 Information 13 7.2 Marking . 13 8 Tests 14 8.1 General 14 8.2 Applicable tests and test sequence 14 8.3 Performance of tests. 15 Annex A (informative) Information requi
22、red 20 A.1 General. 20 A.2 Procurement specification. 20 A.3 Manufacturers specification . 20 BS EN 50123-3:2003+A1:2013 EN 50123-3:2003+A1:2013 (E) 4 1 Scope This part of EN 50123 specifies requirements for d.c. disconnectors, switch-disconnectors and earthing switches for use in indoor fixed insta
23、llations of traction systems. NOTE 1 Switchgear assemblies, electromagnetic compatibility (EMC) and dependability are not covered in this part of EN 50123, but rather by other parts of this standard or other documents as indicated in EN 50123-1. NOTE 2 In this standard the word “unit“ means “disconn
24、ector and/or switch-disconnector and/or earthing switch“ as defined in 3.1.4, 3.1.5 and 3.1.6 of EN 50123-1. NOTE 3 Disconnectors, switch-disconnectors and earthing switches may have electrically latched mechanisms and, in such cases, may be indicated with the current term of “power contactors“. 2 N
25、ormative references This European Standard 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 revision
26、s 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 (including amendments). See EN 50123-1:2003,. 3 Definitions For the purposes of this European Standar
27、d, the terms and definitions given in EN 50123-1 apply. 4 Service requirements Environmental conditions applicable to the equipment discussed in this standard are covered in 4.1 of EN 50123-1. 5 Characteristics of the unit 5.1 Enumeration of the characteristics The characteristics of the unit and it
28、s assigned designations and values (where applicable) are covered as follows: type of unit (5.2); rated values (5.3); class of use (5.4); control circuits (5.5); auxiliary circuits (5.6). BS EN 50123-3:2003+A1:2013 EN 50123-3:2003+A1:2013 (E) 5 5.2 Type of unit A unit shall be defined by the followi
29、ng details as applicable: whether the unit is a switch-disconnector, 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 (see 3.3.29 of EN 50123-1).
30、 5.3 Rated values 5.3.1 General The rated characteristic values shall be specified by the purchaser. Nominal voltage values shall be selected from the values indicated in Table 1 in EN 50123-1; current values should have one of the preferred values in 5.1.2 of EN 50123-1. These values shall be confi
31、rmed by the manufacturer, who shall indicate the rated 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 de
32、fined by the following voltages: nominal voltage Un(see EN 50163); system voltages and limits (see 3.2.1 and 5.1.3 of EN 50123-1); rated voltage UNe(see 3.2.3 of EN 50123-1); rated insulation voltage UNm(see 3.2.2 of EN 50123-1). It shall be equal to or higher than Umax; rated impulse withstand volt
33、age UNi(see 3.2.4 of EN 50123-1); power-frequency voltage withstand level Ua(see 3.2.5 of EN 50123-1); rated auxiliary and control supply voltages (see 3.2.3.1 of EN 50123-1). 5.3.3 Currents A unit is defined by the following currents: conventional thermal current IthIthe(see 3.2.8 and 3.2.9 of EN 5
34、0123-1); NOTE 1 Earthing switches are not required to be assigned this rating. BS EN 50123-3:2003+A1:2013 EN 50123-3:2003+A1:2013 (E) 6 rated service current INe(see 3.2.10 of EN 50123-1); NOTE 2 Earthing switches are not required to be assigned this rating. rated breaking and making capacities (see
35、 3.2.18 and 3.2.22 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 UNe. A rated breaking capacity requires the unit to be able to interrupt any current of
36、a value lower than or equal to this rated breaking capacity. rated short-time withstand current INcw(see 3.2.11 of EN 50123-1). NOTE 3 Rated short-time currents INcw need not have the same value as the rated short-circuit current INss. Overload capability: the purchaser shall inform the supplier of
37、the load cycle requirements (see 3.2.10, note 2, of EN 50123-1). 5.4 Class of use Disconnectors shall close and open 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
38、 latched or mechanically latched mechanisms. The minimum breaking, making and short-time withstand currents of the units shall be at least those in Table 1 for the appropriate category. BS EN 50123-3:2003+A1:2013 EN 50123-3:2003+A1:2013 (E) 7 Table 1 - Categories of units Category Capacities (with t
39、c 0,01 s) Short-time withstand currentMaking Breaking Current Duration I 0 0 INcw/INcwe0,25 s II 0 INeINcw0,25 s III INeINeINcw0,25 s IV 3 INe3 INeINcw0,25 s V INss0 INcw/INcwe0,25 s VI INss3 INeINcw0,25 s NOTE 1 Unless otherwise specified INsshas the same rating as INcwor, for earthing switches,INc
40、we. NOTE 2 A 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. C
41、ategory III: 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 p
42、ossibility exists 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 tcsee 3.2.15 of EN 50123-1. NOTE 4 For earthing switches, refer to 8.3.4.3 of EN 50123-6 to establish the value of INcwew
43、hich shall be 10 kA sustained as a minimum. 5.5 Control circuits The control circuits are identified by the following: the voltage of the control circuits; 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 th
44、e performance, the thermal behaviour and the insulation characteristics are based. Unless otherwise required, the voltage shall be in accordance with 5.2 of EN 50123-1 and the rated insulation voltage shall be in accordance with EN 50124-1. The supply voltage shall be within a range between 80 % and
45、 110 % of the specified voltage according with 5.2 of EN 50123-1. BS EN 50123-3:2003+A1:2013 EN 50123-3:2003+A1:2013 (E) 8 When the control voltage is the same as in the main circuit, the same variations as in the main circuit apply. The manufacturer shall indicate the value(s) of the current drawn
46、by the control circuits at the specified voltage. In case of control circuits which draw current intermittently, the duration of the current flow shall be given. 5.6 Auxiliary contacts and circuits Auxiliary circuits are mainly defined by the number of contacts provided, their rating (thermal curren
47、t and voltage) and by their characteristics (NO, NC or commutation). Unless otherwise required, the rated voltage shall be in accordance with 5.2 of EN 50123-1, and the rated insulation voltage shall be in accordance with EN 50124-1. The purchaser shall specify the minimum number of auxiliary contac
48、ts required. The auxiliary wiring connected to a circuit at 1 000 V a.c. or 1 500 V d.c. or above shall be physically separated from those connected to a circuit at a voltage below said limits. For other characteristics of the auxiliary circuits, the requirements of 5.5 apply. 6 Construction 6.1 Gen
49、eral All apparatus and connections required for the safe and satisfactory operation, control and protection of the equipment concerned, shall be provided, whether or not specifically mentioned. The equipment shall be earthed, insulated, screened or enclosed as may be appropriate to ensure the protection of the equipment and the safety of those concerned in its operation and maintenance. Control and auxiliary circuits and contacts shall comply wit
