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1、| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | BRITISH STANDARD BS EN 50123-5:1999 Incorp
2、orating Corrigendum No. 1 The European Standard EN 50123-5:1997 including amendment A1:1999 has the status of a British Standard ICS 29.280 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW Railway applications Fixed installations D.C. switchgear Part 5: Surge arresters and low-
3、voltage limiters for specific use in d.c. systems Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 06 07:22:53 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
4、the Standards Committee and comes into effect on 15 September 1999 BSI 10-1999 ISBN 0 580 32470 2 BS EN 50123-5:1999 Amendments issued since publication Amd. No.DateComments 10761 Corrigendum No. 1 October 1999 Sidelining removed on pages 16 and 17 National foreword This British Standard is the Engl
5、ish language version of EN 50123-5:1997 including amendment A1:1999. AmendmentA1:1999addsannexB,withothertextintroducedbyamendmentA1 indicated by a sideline. The UK participation in its preparation was entrusted by Technical Committee GEL/9, Railway electrotechnical applications, to Subcommittee GEL
6、/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 informed; monitor related international and European developments and pro
7、mulgate 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 to in this document may be found in the BSI Standards Catalogue under t
8、he 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. Users of British Standards are responsible for their correct applicati
9、on. 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 18, an inside back cover and a back cover. The BSI copyright notice displayed in this documen
10、t indicates when the document was last issued. Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 06 07:22:53 GMT+00:00 2006, Uncontrolled Copy, (c) BSI CENELEC European Committee for Electrotechnical Standardization Comite Europe en de Normalisation Electrotechnique Europa isches Komitee fu r Elek
11、trotechnische Normung Central Secretariat: rue de Stassart 35, B-1050 Brussels 1997 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 50123-5:1997 + A1:1999. E EUROPEAN STANDARDEN 50123-5 NORME EUROPE ENNE June 1997 + A1 March 1999 EU
12、ROPA ISCHE NORM ICS 29.120.60; 45.020 Descriptors: railway equipment, railway fixed equipment, low voltage, overvoltage limiters, arrester, definitions, setting-up conditions, specifications, tests English version Railway applications Fixed installations D.C. switchgear Part 5: Surge arresters and l
13、ow voltage limiters for specific use in d.c. systems (Includes amendment A1:1999) Applications ferroviaires Installations fixes Appareillage a courant continu Partie 5: Parafoudres et limiteurs de tension pour usage spe cifique dans les syste mes a courant continu (Inclut lamendement A1:1999) Bahnan
14、wendungen Ortsfeste Anlagen Gleichstrom-Schalteinrichtungen Teil 5: U berspannungsableiter und Spannungsbegrenzer fu r spezielle Verwendung in Gleichstromsystemen (Entha lt A nderung A1:1999) This European Standard was approved by CENELEC on 1996-10-01; amendment A1 was approved by CENELEC on 1998-0
15、8-01. 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 be obt
16、ained 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 the Cen
17、tral 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, Switzerland and United Kingdo
18、m. Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 06 07:22:53 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Page 2 EN 50123-5:1999 BSI 10-1999 Foreword This European Standard was prepared by SC 9XC, Electric supply and earthing systems for public transport equipment and ancillary apparatus (fixed
19、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 50123-5 on 1996-10-01. The following dates were fixed: latest date by which the EN has to be implemented
20、at national level by publication of an identical national standard or by endorsement(dop) 1997-12-01 latest date by which the national standards conflicting with the EN have to be withdrawn(dow) 1997-12-01 This part is to be used in conjunction with the standards of the EN 60099 series. Annexes desi
21、gnated informative are given for information only. In this standard, annex A is informative. | | | | | | | | | | | | | | | | | | | | | | | Foreword to amendment A1 This amendment was prepared by SC 9XC, Electric supply and earthing systems for public transport equipment and ancillary apparatus (fixe
22、d installations), of Technical Committee CENELEC TC 9X, Electrical and electronic applications for railways. The text of the draft (prAA) was submitted to the formal vote and was approved by CENELEC as amendment A1 to EN 50123-5:1997 on 1998-08-01. The following dates were fixed: latest date by whic
23、h the amendment 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 amendment have to be withdrawn(dow) 1999-10-01 Annexes designated normative are part of the body
24、 of the standard. In this amendment, annex B is informative. Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 06 07:22:53 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Page 3 EN 50123-5:1999 BSI 10-1999 | | | | | Introduction This EN 50123-5 is divided into five clauses as follows. 1) Common matters
25、. 2) Non-linear resistor type gapped surge arresters based on EN 60099-1:1994 (IEC 99-1:1991). 3) Artificial pollution testing of surge arresters: under consideration. 4) Metal-oxide surge arresters without gaps based on EN 60099-4:1993 (IEC 99-4:1991). 5) Low voltage limiters. Clauses 2 and 4 of th
26、is standard shall be read in conjunction with the above-mentioned documents. In particular EN 60099-1:1994 (IEC 99-1:1991), clauses 4 to 8 and annexes B, D and E are referred to in EN 50123-5, clause 2 unless explicitly otherwise indicated in this European Standard. For gapless surge arresters, the
27、appropriate portions of EN 60099-4:1993 (IEC 99-4:1991) are quoted in EN 50123-5, clause 4 and apply. NOTE 1 Only those clauses and subclauses which are modified in respect to the above-mentioned CENELEC and IEC Publications are mentioned in this document. The National Committees may copy the unchan
28、ged portions of the IEC 99 Publications referred to, altering the type face as necessary. NOTE 2 The numbering of this EN 50123- 5 follows the following criteria: the first number identifies the five clauses of this standard; the remaining numbers, for clauses 2 and 4, are taken unchanged from EN 60
29、099-1 and EN 60099-4 respectively. Annex A gives guidance on typical information given with enquiries and tenders. Further annexes are intended to provide specifications for field applications of surge arresters as part of the protection against overvoltages. 1 Common matters 1.1 Scope Clauses 1, 2,
30、 3 and 4 of EN 50123-5 cover particular requirements for surge arresters for specific use in fixed installations of d.c. traction systems. These are surge arresters consisting of one or more non-linear resistors which may be in series with single or multiple spark gaps. Low voltage limiters are cove
31、red by EN 50123-5, clause 5. These are protective devices mainly used in fixed installations of d.c. traction systems to connect certain portions of the circuit, when, owing to an abnormal situation, the voltage across the device exceeds a predetermined limited value. They are not used in general to
32、 provide surge protection. In particular, the following main uses of low voltage limiters (LVL) are envisaged: connection to the rail of metallic masses; protection of rail circuits; earthing of rails in the substation; protection of cathodic circuits; protection of cable shields. 1.2 Normative refe
33、rences This European Standard incorporates by dated or undated reference, provisions from other documents. These normative references are cited at the appropriate places in the text and the publications are listed thereafter. For dated references, subsequent amendments to or revisions of any of thes
34、e 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. All the normative references listed in EN 50123-1 and especially: EN50125-2,1997, Railway applications Environmental
35、 conditions for equipment Part 2: Equipment in fixed installations. EN 60099-1, 1994, Surge arresters Part 1: Non-linear resistor type gapped surge arresters for a.c. systems. (IEC 99-1:1991) EN 60099-4, 1993, Surge arresters Part 4: Metal-oxide surge arresters without gaps for a.c. systems. (IEC 60
36、099-4:1991) 2 Non-linear resistor type gapped surge arresters 2.1 General See clause 1, Common matters. 2.2 Definitions The definitions given in EN 50123-1, clause 3 as well as the definitions in EN 60099-1:1994, clause 2 apply except for the following. 2.2.8 Rated voltages 2.2.8.1 rated voltage of
37、a gapped arrester(Ur) maximum d.c. voltage value between terminals at which the surge arrester is designated to withstand continuously NOTE Preferred values taken from Table 2.1A are recommended. 2.2.8.2 protective voltage level of a gapped arrester (Up) crest value, declared by the supplier, higher
38、 than the maximum of the three voltage values between the surge arrester terminals: residual voltage at In, maximum standard lightning impulse sparkover voltage, maximum front of wave impulse sparkover voltage, the latter divided by 1,15 NOTE 1 Preferred values taken from Table 2.1B are recommended.
39、 NOTE 2 The definition of the protective voltage level is due to the fact that, according to EN 50124-1, a wide choice of impulse levels may be associated with a single rated voltage. The choice of Up shall be co-ordinated with the impulse withstand level of the equipment/section protected, taking i
40、nto account a margin selected by the purchaser. Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 06 07:22:53 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Page 4 EN 50123-5:1999 BSI 10-1999 2.2.9 Not applicable. 2.2.33 nominal discharge current of a gapped arrester (In) peak value of discharge curre
41、nt, having an 8/20 waveshape, which is used to classify an arrester. It is also the discharge current which is used to initiate follow-through current in the operating duty test 2.3 Marking Gapped surge arresters shall be identified by the following minimum information which shall appear on the rati
42、ng plate (nameplate): compliance with EN 50123-5; type: gapped suitable for d.c. traction systems; rated voltage Ur; protective voltage level Up; nominal discharge current In; pressure relief class in kiloamps (if any); manufacturers name or trademark, type and identification; year of manufacture; s
43、erial number. NOTEInformation to be given by enquiry or tender may be guided by annex A of this standard or by EN 60099-1, annex B. 2.4 Preferred ratings A document giving guidance in the selection of proper rated characteristics to ensure the required protection to the circuit is under preparation
44、(see also note 2 of 2.2.8.2). 2.4.1 Preferred voltage ratings Preferred values of rated voltages for gapped arresters (Ur) shall be as listed in Table 2.1A. Table 2.1A Preferred voltage ratings (kV) 0,750124 2.4.2 Preferred protective voltage levels Preferred protective voltage levels for gapped arr
45、esters (Up) shall be as listed in Table 2.1B. Table 2.1B Preferred protective voltage levels (kVcr) 3,04,55,06,08,010121518 2025303540 2.4.3 Preferred nominal discharge currents The preferred nominal discharge currents (In), are as listed in Table 2.1C. Table 2.1C Preferred nominal discharge current
46、s (kA) 201052,5 2.4.4 Service conditions Where service conditions differ from those defined as normal, either in EN 50123-1:1995, clause 4 and annex B (indoor arresters) or in the EN 60099 series (outdoor arresters), the purchaser shall state this fact in the tender specification. Where a d.c. arres
47、ter is suitable for use in service conditions different from those defined as normal in the above mentioned documents, the manufacturer shall state this fact. 2.5 Requirements See EN 60099-1:1994, clause 5 except for the following. 2.5.4 Switching impulse sparkover voltage No limits for the maximum
48、switching impulse sparkover voltage have been specified. The test under 2.8.3.5 is considered an investigation test, i.e. a test carried out by agreement between parties for gaining experience, without reference to the contractual obligations. NOTE The switching phenomena on d.c. systems are under c
49、onsideration. 2.5.6 Not applicable. 2.5.8 Long-duration current withstand Arresters shall withstand the long-duration current impulse test according to 2.8.5.3 and EN 60099-1, Table 6. The average dry power-frequency sparkover voltage of 2.8.2 recorded before and after this test shall not have changed by more than 10 %. NOTE The switching phenomena on d.c. systems are under consideration. 2.6 General testing procedure See EN 60099-1:1994, clause 6. 2.7 Routine and accep
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