Power transformers - Additional European requirements: Part 3-3 Large power transformer - Accessories

This standard covers the European requirements for accessories on large power transformers. This standard will part of EN 50708 series, with the number EN50708-3-3.

Leistungstransformatoren – Zusätzliche europäische Anforderungen – Teil 3-3: Große Leistungstransformatoren

Transformateurs de puissance - Exigences européennes supplémentaires - Partie 3-3: Transformateurs de grande puissance - Accessoires

Le présent document décrit les accessoires types utilisés pour les transformateurs de grande puissance.

Močnostni transformatorji - Dodatne evropske zahteve - 3-3. del: Veliki močnostni transformator - Pribor

General Information

Status
Not Published
Publication Date
01-Jul-2025
Current Stage
4060 - Enquiry results established and sent to TC, SR, BTTF - Enquiry
Start Date
15-Sep-2023
Due Date
05-Jul-2024
Completion Date
15-Sep-2023

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prEN 50708-3-3:2023
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Standards Content (Sample)

SLOVENSKI STANDARD
oSIST prEN 50708-3-3:2023
01-september-2023
Močnostni transformatorji - Dodatne evropske zahteve - 3-3. del: Veliki močnostni
transformator - Pribor
Power transformers - Additional European requirements: Part 3-3 Large power
transformer - Accessories
Transformateurs de puissance - Exigences européennes supplémentaires - Partie 3-3:
Transformateurs de grande puissance - Accessoires
Ta slovenski standard je istoveten z: prEN 50708-3-3:2023
ICS:
29.180 Transformatorji. Dušilke Transformers. Reactors
oSIST prEN 50708-3-3:2023 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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oSIST prEN 50708-3-3:2023

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oSIST prEN 50708-3-3:2023


EUROPEAN STANDARD DRAFT
prEN 50708-3-3
NORME EUROPÉENNE

EUROPÄISCHE NORM

June 2023
ICS  -
English Version
Power transformers - Additional European requirements: Part 3-
3 Large power transformer - Accessories
To be completed To be completed
This draft European Standard is submitted to CENELEC members for enquiry.
Deadline for CENELEC: 2023-09-15.

It has been drawn up by CLC/TC 14.

If this draft becomes a European Standard, 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.

This draft European Standard 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 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.

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.



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
© 2023 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Project: 77611 Ref. No. prEN 50708-3-3:2023 E

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oSIST prEN 50708-3-3:2023
prEN 50708-3-3:2023 (E)
5 Contents
6 European foreword . 3
7 Introduction . 4
8 1 Scope . 5
9 2 Normative references . 5
10 3 Terms and definitions . 5
11 4 Service conditions . 5
12 5 Main accessories . 6
13 6 Specific requirements for certain accessories . 7
14 6.1 Gas and liquid actuated relay (Buchholz relays) . 7
15 6.2 Specific requirement for wheels . 7
16
2

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oSIST prEN 50708-3-3:2023
prEN 50708-3-3:2023 (E)
17 European foreword
18 This document (prEN 50708-3-3:2023) has been prepared by CLC/TC 14 “Power transformers”.
19 This document is currently submitted to the Enquiry.
20 The following dates are proposed:
• latest date by which the existence of this (doa) dor + 6 months
document h
...

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