EN 50588-1:2015/A1:2016

SLOVENSKI STANDARD
01-september-2016
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Medium power transformers 50 Hz, with highest voltage for equipment not exceeding 36
kV - Part 1: General requirements
Mittelleistungstransformatoren 50 Hz, mit einer höchsten Spannung für Betriebsmittel
nicht über 36 kV - Teil 1: Allgemeine Anforderungen
Transformateurs 50 Hz de moyenne puissance, de tension la plus élevée pour le
matériel ne dépassant pas 36 kV - Partie 1: Exigences générales
Ta slovenski standard je istoveten z: EN 50588-1:2015/A1:2016
ICS:
29.180 Transformatorji. Dušilke Transformers. Reactors
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN 50588-1:2015/A1

NORME EUROPÉENNE
EUROPÄISCHE NORM
June 2016
ICS 29.180
English Version
Medium power transformers 50 Hz, with highest voltage for
equipment not exceeding 36 kV - Part 1: General requirements
Transformateurs 50 Hz de moyenne puissance, de tension Mittelleistungstransformatoren 50 Hz, mit einer höchsten
la plus élevée pour le matériel ne dépassant pas 36 kV - Spannung für Betriebsmittel nicht über 36 kV - Teil 1:
Partie 1: Exigences générales Allgemeine Anforderungen
This amendment A1 modifies the European Standard EN 50588-1:2015; it was approved by CENELEC on 2016-05-23. 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 CEN-CENELEC
Management Centre 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 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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.

European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2016 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN 50588-1:2015/A1:2016 E

Contents Page
European foreword . 3
1 Modification to Clause1, Scope . 4
2 Modifications to Clause 3, Terms and definitions . 4
3 Modifications to 6.1, General . 5
4 Modifications to 6.2, Transformers with rated power Sr ≤ 3 150 kVA . 6
5 Modification to 6.3, Transformers with rated power 3 150 kVA < Sr < 40 000 kVA . 7
6 Modification to 7.2.2, Transformers subjected to max losses . 8
7 Modification to Clause 8, Rating plate . 8

European foreword
This document (EN 50588-1:2015/A1:2016) has been prepared by CLC/TC 14 "Power transformers".
The following dates are fixed:
- latest date by which this document has to be (dop) 2017-05-23
implemented at national level by publication of
an identical national standard or by
endorsement
- latest date by which the national standards (dow) 2019-05-23
conflicting with this document have to
be withdrawn
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. CENELEC [and/or CEN] shall not be held responsible for identifying any or all such patent rights.
This document has been prepared under a mandate given to CENELEC by the European Commission and
the European Free Trade Association, and supports requirements of Commission Regulation (EU).
For the relationship with Commission Regulation (EU) see informative Annex ZZ, which is an integral part of
EN 50588-1:2015.
1 Modification to Clause 1, Scope
After the last item of the bulleted list, “- large power transformers which are like for like replacements in the
same physical location/installation for existing large power transformers, where this replacement cannot be
achieved without entailing disproportionate costs associated to their transportation and/or installation”, add the
following text:
“In case one of the last two exclusions is claimed, this should be documented at the signature of the contract
with a declaration made by the customer.
NOTE 3 This standard covers the transformers under the Commission Regulation (EU) No. 548/2014 and gives
additional specific guidance for single phase transformers, multi winding transformers and for transformers with OF or OD
cooling systems, necessary for the correct application of energy efficiency requirements to these categories of
transformers.”.
2 Modifications to Clause 3, Terms and definitions
After term “3.6 declared value”, add the following new terms:
“3.7 excluded transformers
3.7.1
instrument transformer
transformer as defined in section 3.1.1 of EN 61869-1:2009, even if it supplies energy for the operation of
connected equipment
Note 1 to entry: The difference between the definition in Regulation 548/2014 and the CENELEC one is in the use of the
word ‘supply’ rather than ‘transmit an information signal’.
3.7.2
transformer with low-voltage windings specifically designed for use with rectifiers to provide a DC
supply
transformer specifically designed and intended to supply power electronic or rectifier loads specified according
to EN 61378-1
Note 1 to entry: This definition covers transformers designed for use with rectifiers to provide a DC supply in certain
applications.
Note 2 to entry: The term “low-voltage winding” refers to the winding having the lowest rated voltage as per EN 60076-1,
whatever its voltage level.
Note 3 to entry: This definition does not include:
- transformers which are intended to provide AC from DC sources such as transformers for wind turbine and photo
voltaic applications;
- transformers designed for DC transmission and distribution applications.
Therefore, they are part of the scope of this standard and shall comply with Commission Regulation (EU) No. 548/2014.
3.7.3
transformers specifically designed for offshore applications and floating offshore applications
transformer to be installed on fixed or floating offshore platforms, offshore wind turbines or on board of ships
and all kind of vessels
3.7.4
transformers specially designed for emergency installations
transformer designed only to provide cover for a specific time limited situation when the normal power supply
is interrupted either due to an unplanned occurrence such as failure or a station refurbishment, but not to
permanently upgrade an existing substation
Note 1 to entry: Such transformer could have some specific features that make it suitable for emergency or temporary
use as opposed to normal use. Example of some specific features:
- multiple windings making it suitable for use at several locations;
- special low weight or dimensions for easy transport, or special capability to be disassembled into smaller units for
transport;
- increased overload capability achieved by the use of special materials;
- permanent mounting on a transporter arrangement.
3.7.5
transformers and auto-transformers specifically designed for railway feeding systems
transformer as defined in EN 50329
3.7.6
earthing or grounding transformers, this is, three-phase transformers intended to provide a neutral
point for system grounding purposes
transformer as defi
...