EN 50708-3-4:2022

Power transformers - Additional European requirements - Part 3-4: Large power transformer - Special tests for corrugated tank and radiators

This document describes a special test for tanks of liquid-immersed transformers which during service are hermetically sealed and fully filled with liquid and volume change of the liquid due to temperature change compensated by elastic deformation of the cooling element for Large Power Transformers having a rated power greater than 3150 kVA.

Leistungstransformatoren - Zusätzliche europäische Anforderungen - Teil 3-4: Großleistungstransformatoren - Sonderprüfungen für Wellwandkessel und Radiatoren

Transformateurs de puissance - Exigences européennes supplémentaires: Partie 3-4: Transformateurs de grande puissance - Essais spéciaux pour cuve ondulée et radiateurs extensibles

Le présent document décrit un essai spécial pour les cuves des transformateurs immergés dans un liquide qui, en service, sont hermétiques et entièrement remplis de liquide, et la variation du volume du liquide due à des variations de température compensées par la déformation élastique de l’élément réfrigérant pour les transformateurs de grande puissance dont la puissance assignée est supérieure à 3150 kVA.

Močnostni transformatorji - Dodatne evropske zahteve - 3-4. del: Veliki močnostni transformatorji - Posebni preskusi za rezervoarje in hladilnike iz valovite pločevine

Ta dokument opisuje poseben preskus za rezervoarje transformatorjev, potopljenih v tekočino, ki so med obratovanjem hermetično zaprti in popolnoma napolnjeni s tekočino, vključno s spremembo volumna tekočine zaradi temperaturne spremembe, kompenzirano z elastično deformacijo hladilnega elementa za velike močnostne transformatorje z nazivno močjo, večjo od 3150 kVA.

General Information

• Status: Published
• Publication Date: 22-Sep-2022
• ICS: 29.180 - Transformers. Reactors
• Technical Committee: CLC/TC 14 - Power transformers
• Drafting Committee: CLC/TC 14/WG 21 - Revision of HD 428 and HD 538
• Current Stage: 6060 - Document made available - Publishing
• Start Date: 23-Sep-2022
• Due Date: 29-Jul-2022
• Completion Date: 23-Sep-2022
• Ref Project: SIST EN 50708-3-4:2022 - Power transformers - Additional European requirements - Part 3-4: Large power transformer - Special tests for corrugated tank and radiators

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN 50708-3-4:2022
01-november-2022
Močnostni transformatorji - Dodatne evropske zahteve - 3-4. del: Veliki močnostni
transformatorji - Posebni preskusi za rezervoarje in hladilnike iz valovite pločevine
Power transformers - Additional European requirements - Part 3-4: Large power
transformer - Special tests for corrugated tank and radiators
Transformateurs de puissance - Exigences européennes supplémentaires: Partie 3-4:
Transformateurs de grande puissance - Essais spéciaux pour cuve ondulée et radiateurs
extensibles
Ta slovenski standard je istoveten z: EN 50708-3-4:2022
ICS:
29.180 Transformatorji. Dušilke Transformers. Reactors
SIST EN 50708-3-4:2022 en,fr
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 50708-3-4:2022


EUROPEAN STANDARD EN 50708-3-4

NORME EUROPÉENNE

EUROPÄISCHE NORM September 2022
ICS 29.180

English Version
Power transformers - Additional European requirements -
Part 3-4: Large power transformer - Special tests for corrugated
tank and radiators
Transformateurs de puissance - Exigences européennes Leistungstransformatoren - Zusätzliche europäische
supplémentaires: Partie 3-4: Transformateurs de grande Anforderungen - Teil 3-4: Großleistungstransformatoren -
puissance - Essais spéciaux pour cuve ondulée et Sonderprüfungen für Wellwandkessel und Radiatoren
radiateurs extensibles
This European Standard was approved by CENELEC on 2022-08-15. 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 obtained on application to the CEN-CENELEC
Management Centre 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-CENELEC Management Centre 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, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Türkiye and the United Kingdom.



European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2022 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
 Ref. No. EN 50708-3-4:2022 E

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SIST EN 50708-3-4:2022
EN 50708-3-4:2022 (E)
Contents Page
European foreword . 3
Introduction . 4
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 5
4 Service conditions . 5
5 Special test for corrugated tank and tank with expandable radiators . 5
5.1 General information . 5
5.2 Temperature variation . 6
5.3 Sealing temperature . 6
5.4 Calculation of the volume variation . 6
5.5 Test procedure . 7
5.5.1 General .
...