SVENSK STANDARD SS-EN 50329/A1

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SVENSK STANDARD SS-EN 50329/A1

F a st st äl l d 2010-06-21

U t g å va 1

S i d a 1 (1+11)

A n s va r i g k o m m it t é SEK TK 9

ICS 29.180; 29.280

Denna standard är fastställd av SEK Svensk Elstandard,

som också kan lämna upplysningar om sakinnehållet i standarden.

Postadress: SEK, Box 1284, 164 29 KISTA Telefon: 08 - 444 14 00. Telefax: 08 - 444 14 30 E-post: sek@elstandard.se. Internet: www.elstandard.se

Järnvägsanläggningar –

Stationära transformatorer för banmatning

Railway applications – Fixed installations – Tractions transformers

Denna svenska standard innehåller ett inom CENELEC utarbetat tillägg, Amendment A1:2010, till EN 50329:2003. Tillägget, SS-EN 50329/A1, återger den officiella engelska språkversionen av EN 50329/A1:2010.

Nationellt förord

Standarden ska användas tillsammans med SS-EN 50329, utgåva 1, 2003.

Fr o m 2013-05-01 gäller SS-EN 50329, utgåva 1, 2003, inte utan detta separat utgivna tillägg SS-EN 50329/A1.

Publicerad: juli 2010

Denna standard är såld av SIS Förlag AB som även lämnar allmänna upplysningar om svensk och utländsk standard.

Postadress: SIS Förlag AB, 118 80 STOCKHOLM Telefon: 08 - 555 523 10. Telefax: 08 - 555 523 11 E-post: sis.sales@sis.se. Internet: www.sis.se

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Standarder underlättar utvecklingen och höjer elsäkerheten

Det finns många fördelar med att ha gemensamma tekniska regler för bl a säkerhet, prestanda, dokumentation, utförande och skötsel av elprodukter, elanläggningar och metoder. Genom att utforma sådana standarder blir säkerhetskraven tydliga och utvecklingskostnaderna rimliga samtidigt som marknadens acceptans för produkten eller tjänsten ökar.

Många standarder inom elområdet beskriver tekniska lösningar och metoder som åstadkommer den elsäkerhet som föreskrivs av svenska myndigheter och av EU.

SEK är Sveriges röst i standardiseringsarbetet inom elområdet

SEK Svensk Elstandard svarar för standardiseringen inom elområdet i Sverige och samordnar svensk medverkan i internationell och europeisk standardisering. SEK är en ideell organisation med frivilligt deltagande från svenska myndigheter, företag och organisationer som vill medverka till och påverka utformningen av tekniska regler inom elektrotekniken.

SEK samordnar svenska intressenters medverkan i SEKs tekniska kommittéer och stödjer svenska experters medverkan i internationella och europeiska projekt.

Stora delar av arbetet sker internationellt

Utformningen av standarder sker i allt väsentligt i internationellt och europeiskt samarbete. SEK är svensk nationalkommitté av International Electrotechnical Commission (IEC) och Comité Européen de Normalisation Electrotechnique (CENELEC).

Standardiseringsarbetet inom SEK är organiserat i referensgrupper bestående av ett antal tekniska kommittéer som speglar hur arbetet inom IEC och CENELEC är organiserat.

Arbetet i de tekniska kommittéerna är öppet för alla svenska

organisationer, företag, institutioner, myndigheter och statliga verk. Den årliga avgiften för deltagandet och intäkter från försäljning finansierar SEKs standardiseringsverksamhet och medlemsavgift till IEC och CENELEC.

Var med och påverka!

Den som deltar i SEKs tekniska kommittéarbete har möjlighet att påverka framtida standarder och får tidig tillgång till information och dokumentation om utvecklingen inom sitt teknikområde. Arbetet och kontakterna med kollegor, kunder och konkurrenter kan gynnsamt påverka enskilda företags affärsutveckling och bidrar till deltagarnas egen kompetensutveckling.

Du som vill dra nytta av dessa möjligheter är välkommen att kontakta SEKs kansli för mer information.

SEK Svensk Elstandard

Box 1284 164 29 Kista Tel 08-444 14 00 www.elstandard.se

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EUROPEAN STANDARD EN 50329:2003/A1

NORME EUROPÉENNE

EUROPÄISCHE NORM ^{May 2010}

CENELEC

European Committee for Electrotechnical Standardization Comité Européen de Normalisation Electrotechnique Europäisches Komitee für Elektrotechnische Normung Management Centre: Avenue Marnix 17, B - 1000 Brussels

Ref. No. EN 50329:2003/A1:2010 E

ICS 29.180; 29.280

English version

Railway applications - Fixed installations - Traction transformers

Applications ferroviaires - Installations fixes -

Transformateurs de traction

Bahnanwendungen -

Ortsfeste Anlagen - Bahn-Transformatoren

This amendment A1 modifies the European Standard EN 50329:2003; it was approved by CENELEC on 2010-05-01. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this amendment 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 or to any CENELEC member.

This amendment 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 official versions.

CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom.

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EN 50329:2003/A1:2010 – 2 –

Foreword

This amendment to the European Standard EN 50329:2003 was prepared by SC 9XC, Electric supply and earthing systems for public transport equipment and ancillary apparatus (Fixed installations), of Technical Committee CENELEC TC 9X, Electrical and electronic applications for railways. It was submitted to the formal vote and was approved by CENELEC as A1 to EN 50329:2003 on 2010-05-01.

Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and CENELEC shall not be held responsible for identifying any or all such patent rights.

The following dates were fixed:

– latest date by which the amendment has to be implemented at national level by publication of an identical

national standard or by endorsement (dop) 2011-05-01 – latest date by which the national standards conflicting

with the amendment have to be withdrawn (dow) 2013-05-01

__________

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– 3 – EN 50329:2003/A1:2010

1 General

1.2 Normative references

Delete the following normative references:

HD 464 S1 + A2 + A3 + A4

1988 1991 1992 1995

Dry-type power transformers (IEC 60726:1982 + A1:1986, mod.)

IEC 60354 1991 Loading guide for oil-immersed power transformers

Add the following normative references:

EN 60076-11 2004 Power transformers – Part 11: Dry-type transformers (IEC 60076-11:2004) IEC 60076-7 2005 Power transformers – Part 7: Loading guide for oil-immersed power

transformers

2 General requirements for a traction transformer

Replace Subclause 2.2 by the following:

2.2 Checking of the capability of the transformer to sustain the stipulated load cycle 2.2.1 General

The temperature rise test shall be carried out in accordance with either EN 60076-2 or EN 60076-11 as applicable.

Basis for determining the temperature rises shall be the rated service current (the approximate relationship between the rated current and the rated service current is given in Table C.3).

The resulting temperature rises after long-time overloads shall be within the limits of the temperature rises prescribed in EN 60076-2 and EN 60076-11 under the stipulated ambient conditions and altitude.

The winding temperature rise after short-time overload conditions may exceed by 15 K the applicable temperature rise limits according to EN 60076-2 and EN 60076-11.

When determining the temperature rises the effect of the harmonics should be considered according to 2.2.2, 2.2.3 and 2.2.4.

2.2.2 Temperature rise measurement for liquid immersed transformers

The procedure of 5.2.2 of EN 60076-2 shall be applied with the exceptions mentioned here below. The specified duty class or load cycle shall be taken into account. For transformers designed according to a duty class the test cycles given in Figure A.1 to Figure A.3 shall apply.

The transformer in short circuit conditions shall be injected with a current causing the total losses. In case of a traction converter transformer, the total losses are intended as the sum of the no-load loss and of the total load losses determined according to Annex C.

Total losses calculated on the service current in basic load condition (IBG) are injected until it reaches temperature steady-state conditions and then the long-term overload current is injected, for the specified duration of said overload according to the duty class or load cycle. The final top oil temperature rise shall be recorded.

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EN 50329:2003/A1:2010 – 4 –

For determining the temperature rises of windings, the transformer shall be subsequently loaded by service currents representing the basic load (including the effect of harmonics), for the time necessary to reach steady temperatures of the windings, and, for the respective durations, the service currents corresponding to long-time overloads, and, when practicable and agreed between purchaser and supplier, service currents corresponding to short-time overloads.

Measurements shall be taken at the end of the long-time overload duration and, when applicable, at the end of the short-time overload duration. When actual measurements are not possible, it may be agreed to carry out calculations on temperature variations along the short-time load duration, performed according to conventional methods.

IEC 60076-7 gives some guidance for such a calculation.

2.2.3 Temperature rise measurement for dry-type transformers

The requirements given in Clause 23 of EN 60076-11 apply taking into account that in the second part of the test the losses attributable to the various stages of the current demand shall be calculated and successively applied and the overloads for the respective duration. Annex C allows determining total load losses.

Measurements shall be taken at the end of the long-time overload duration and, when applicable, at the end of the short-time overload duration. For transformers designed according to a duty class, the test cycles given in Figure A.1 to Figure A.3 apply.

When actual measurements are not possible, it may be agreed to carry out calculations on temperature variations along the short-time load duration, performed according to conventional methods.

IEC 60905 gives some guidance for such a calculation.

2.2.4 Alternative criteria for determining temperature rise limits

On agreement between purchaser and manufacturer temperature limits and thermal ageing according to IEC 60076-7 and IEC 60905 may be applied.

If the purchaser is able to define the load cycle in an extensive way as current demand, the capability of the transformer to sustain this current demand shall be checked as follows:

– temperature rise and loss measurements shall be performed at sinusoidal load with rated service current;

– based on these measurements, the top-oil temperature, the hot-spot temperatures of the windings and the relative loss of life for the given current demand shall be calculated. The loss of life calculation procedure of IEC 60076-7 may be used;

– the temperatures at the beginning of the load-cycle shall be set equal to those at the end of the load cycle to consider a steady state condition; the maximum service temperature shall be taken into account;

– the calculated relative loss of life for the load cycle shall be lower than 1;

– for oil immersed transformers, the maximum occasional hot-spot- temperature shall be lower than 140 °C and the maximum top oil temperature shall be lower than 115 °C during the load cycle;

– the influence of harmonics shall be considered as described in Annex C.

For transformers designed according to a duty class, the text given in Figure A.1 to Figure A.3 applies.

Different temperature limits may be agreed between purchaser and supplier depending on the oil characteristics.

SVENSK STANDARD SS-EN 50329/A1