FINAL DRAFT EN 50464-4 FprAA
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
April 2011
ICS 29.180
English version
Three-phase oil-immersed distribution transformers 50 Hz, from 50 kVA to 2 500 kVA with highest voltage for equipment not exceeding 36 kV Part 4: Requirements and tests concerning pressurised corrugated tanks
Transformateurs triphasés de distribution immergés dans l'huile, 50 Hz, de 50 kVA à 2 500 kVA, de tension la plus élevée pour le matériel ne dépassant pas 36 kV Partie 4: Prescriptions et essais relatifs aux cuves sous pression
Ölgefüllte DrehstromVerteilungstransformatoren 50 Hz, 50 kVA bis 2 500 kVA mit einer höchsten Spannung für Betriebsmittel bis 36 kV Teil 4: Anforderungen und Prüfungen für druckbeanspruchte Wellwandkessel W ellwandkessel
This draft amendment FprAA, if approved, will modify the European Standard EN 50464-4:2007; it is submitted to CENELEC members for Unique Acceptance Procedure. Deadline for CENELEC: 2011-09-02. It has been drawn up by CLC/TC 14. If this draft becomes an amendment, 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. This draft amendment was established by CENELEC 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. Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are aware and to provide supporting documentation. Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without notice and shall not be referred to as a European Standard.
CENELEC European Committee for Electrotechnical Standardization Comité Européen de Normalisation Electrotechnique Europäisches Komitee für Elektrotechnische Normung Management Centre: Avenue Marnix 17, B - 1000 Brussels © 2011 CENELEC CENELEC Project: 22807
All rights of exploitation exploitation in any any form and by any means means reserved worldwide for CENELEC members. Ref. No. EN 50464-4:2007/FprAA:2011 50464-4:2007/FprAA:2011 E
EN 50464-4:2007/FprAA:2011 50464-4:2007/FprAA:2011
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Foreword
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This draft amendment to the European Standard EN 50464-4:2007 was prepared by the Technical Committee CENELEC TC 14, Power transformers. It I t is submitted to the t he Unique Acceptance Procedure. The following dates are proposed:
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latest date by which the existence of the amendment amendment has to be announced at national level
(doa)
dor + 6 months
latest date by which the amendment has to be implemented at national level by publication of an identical national standard or by endorsement
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dor + 12 months
latest date by which the national standards conflicting with the amendment have to be withdrawn
(dow)
dor + 36 months (to be confirmed or modified when voting)
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EN 50464-4:2007/FprAA:2011 50464-4:2007/FprAA:2011
Text of FprAA to EN 50464-4:2007
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3
General conditions
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3.1
Temperature variation
f ollowing g paragraph: Add the the followin “By agreement between manufacturer and purchaser the maximum temperature used for the endurance test shall be 40 °C plus 0,8 times the oil temperature rise determined by the temperature rise test.”
