EN 50588-1:2017
(Main)Medium power transformers 50 Hz, with highest voltage for equipment not exceeding 36 kV - Part 1: General requirements
Medium power transformers 50 Hz, with highest voltage for equipment not exceeding 36 kV - Part 1: General requirements
This European Standard covers medium power transformers. ‘Medium power transformer’ means a power transformer with a highest voltage for equipment higher than 1,1 kV, but not exceeding 36 kV and a rated power equal to or higher than 5 kVA but lower than 40 MVA. National practices may require the use of highest voltages for equipment up to (but not including) 52 kV, when the rated voltage is less than 36 kV (such as Um = 38,5 kV or Um = 40,5 kV). This is considered to be an unusual case of a large power transformer, where the requirements are those for a medium power transformer with Um = 36 kV. NOTE 1 ‘Large power transformer’ means a power transformer with a highest voltage for equipment exceeding 36 kV and a rated power equal to or higher than 5 kVA, or a rated power equal to or higher than 40 MVA regardless of the highest voltage for equipment. Large power transformers are in the scope of EN 50629. NOTE 2 Transformers with tap changer (DETC or OLTC) are included in this European Standard even if they have separate tapping winding. The object of this European Standard is to set up requirements related to electrical characteristics and design of medium power transformers. The following transformers are excluded from this European Standard: a) instrument transformers, specifically designed to supply measuring instruments, meters, relays and other similar apparatus; b) transformers with low-voltage windings specifically designed for use with rectifiers to provide a DC supply; c) transformers specifically designed to be directly connected to a furnace; d) transformers specifically designed for offshore applications and floating offshore applications; e) transformers specially designed for emergency installations; f) transformers and auto-transformers specifically designed for railway feeding systems; g) earthing or grounding transformers, this is, three-phase transformers intended to provide a neutral point for system grounding purposes; h) traction transformers mounted on rolling stock, this is, transformers connected to an AC or DC contact line, directly or through a converter, used in fixed installations of railway applications; i) starting transformers, specifically designed for starting three-phase induction motors so as to eliminate supply voltage dips; j) testing transformers, specifically designed to be used in a circuit to produce a specific voltage or current for the purpose of testing electrical equipment; k) welding transformers, specifically designed for use in arc welding equipment or resistance welding equipment; l) transformers specifically designed for explosion-proof and underground mining applications; m) transformers specifically designed for deep water (submerged) applications; n) medium Voltage (MV) to Medium Voltage (MV) interface transformers up to 5 MVA; o) large power transformers where it is demonstrated that for a particular application, technically feasible alternatives are not available to meet the minimum efficiency requirements set out by the commission regulation (EU) No 548/2014; p) 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. 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.
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
Srednji močnostni transformatorji 50 Hz z najvišjo napetostjo naprave do 36 kV – 1. del: Splošne zahteve
Ta evropski standard zajema srednje transformatorje. »Srednji transformator« označuje transformator z najvišjo napetostjo za opremo, ki je višja od 1,1 kV, vendar ne presega 36 kV, in z nazivno močjo, enako ali višjo od 5 kVA, ki pa ne presega 40 MVA.
Nacionalne prakse lahko zahtevajo uporabo najvišjih napetosti za opremo do (toda ne vključno z) 52 kV, ko je nazivna napetost nižja od 36 kV (kot na primer Um = 38,5 kV ali Um = 40,5 kV). Gre za nenavaden primer velikonapetostnega transformatorja z zahtevami za srednjenapetostni transformator z Um = 36 kV.
OPOMBA 1 »Veliki transformator« označuje transformator z najvišjo napetostjo za opremo, ki je višja od 36 kV in nazivno močjo, enako ali višjo od 5 kVA, ali nazivno močjo, enako ali višjo od 40 MVA, ne glede na najvišjo napetost za opremo. Veliki transformatorji spadajo na področje uporabe standarda EN 50629.
OPOMBA 2: Transformatorji z odcepnim preklopnikom (DETC ali OLTC) so zajeti v tem evropskem standardu, čeprav imajo ločeno navitje odcepa.
Cilj tega evropskega standarda je določanje zahtev v zvezi z električnimi značilnostmi in izdelavo srednjih transformatorjev.
Ta evropski standard ne zajema naslednjih transformatorjev:
a) instrumentnih transformatorjev, ki so posebej izdelani za napajanje merilnih instrumentov, merilnikov, relejev in drugih podobnih aparatov;
b) transformatorjev z nizkonapetostnimi navitji, ki so posebej izdelani za uporabo z usmerniki za izmenično napajanje;
c) transformatorjev, ki so posebej izdelani za neposredno priključitev na peč;
d) transformatorjev, ki so posebej izdelani za uporabo na morju in na plavajočih objektih;
e) transformatorjev, ki so posebej izdelani za zasilne naprave;
f) transformatorjev in avtotransformatorjev, ki so posebej izdelani za sisteme za napajanje železniških naprav;
g) ozemljitvenih transformatorjev, tj. trifaznih transformatorjev za zagotavljanje nevtralne točke za namene ozemljitve sistema;
h) transformatorjev vleke, nameščenih na železniška vozila, tj. transformatorjev, ki so neposredno ali prek pretvornika povezani z enosmernim ali izmeničnim kontaktnim vodnikom in se uporabljajo v stabilnih napravah za železniško uporabo;
i) zagonskih transformatorjev, ki so posebej izdelani za zagon trifaznih asihronskih motorjev z namenom preprečevanja napetostnih upadov;
j) preskusnih transformatorjev, ki so posebej izdelani za uporabo v tokokrogu z namenom proizvajanja določene napetosti ali toka za preskušanje električne opreme;
k) varilnih transformatorjev, ki so posebej izdelani za uporabo v opremi za obločno ali uporovno varjenje;
l) transformatorjev, ki so posebej izdelani za uporabo v protieksplozijskem ali podzemnem okolju;
m) transformatorjev, ki so posebej izdelani za uporabo v globoki vodi (podvodna uporaba);
n) srednjenapetostnih (MV) do srednjenapetostnih (MV) vmesniških transformatorjev do 5 MVA;
o) velikih transformatorjev, kjer je prikazano, da za določeno uporabo tehnično možne alternative, ki bi dosegle minimalne zahteve glede učinkovitosti, ki jih določa uredba komisije (EU) št. 548/2014:
p) velikih transformatorjev, ki so možne zamenjave za obstoječe velike transformatorje na/v istih fizičnih lokacijah/napravah, v primeru da zamenjava slednjih ni mogoča brez nesorazmernih stroškov, ki bi nastali zaradi njihovega prevoza in/ali namestitve.
V primeru navedbe ene od zadnjih dveh izključitev je to potrebno dokumentirati ob podpisu pogodbe, in sicer z izjavo, ki jo je pripravila stranka.
OPOMBA 3: Ta standard zajema transformatorje v skladu z Uredbo Komisije (EU) št. 548/2014 in podaja dodatne posebne smernice za enofazne transformatorje, transformatorje z več navitji in transformatorje s hladilnimi sistemi OF ali OD, ki so potrebni za pravilno uporabo zahtev za energijsko učinkovitost pri teh kategorijah transformatorjev.
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-november-2017
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SIST EN 50588-1:2015
SIST EN 50588-1:2015/A1:2016
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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 50588-1:2017
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
NORME EUROPÉENNE
EUROPÄISCHE NORM
September 2017
ICS 29.180 Supersedes EN 50588-1:2015
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 European Standard was approved by CENELEC on 2017-07-03. 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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Serbia, 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
© 2017 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN 50588-1:2017 E
Contents Page
European foreword . 3
1 Scope . 4
2 Normative references . 5
3 Terms and definitions . 6
4 Environmental classes . 8
5 Electrical characteristics . 8
5.1 Highest voltages for equipment for winding with U > 1,1 kV . 8
m
5.2 Rated voltage for winding with Um ≤ 1,1 kV . 8
5.3 Tapping . 9
5.4 Connection designations for three phase transformers . 9
6 Load loss, no load loss, PEI, sound power level, short-circuit impedance . 9
6.1 General . 9
6.2 Transformers with rated power S ≤ 3 150 kVA . 10
r
6.3 Transformers with rated power 3 150 kVA < S < 40 000 kVA. 14
r
6.4 Transformers with special requirements . 15
7 Tolerances . 17
7.1 Tolerances during factory acceptance tests . 17
7.2 Tolerances for Market surveillance . 18
7.3 Uncertainties for market surveillance verification . 19
8 Rating plate . 19
9 Tests . 20
9.1 Routine tests . 20
9.2 Type tests . 20
9.3 Special tests . 20
9.4 Special test for corrugated tank . 20
9.5 Other technologies with level of no load loss AAA . 22
10 Design requirements . 22
10.1 Liquid immersed transformers . 22
10.2 Dry-type transformers . 23
11 Accessories . 23
11.1 Liquid immersed transformers . 23
11.2 Dry-type transformers . 24
Annex A (informative) Calculation of PEI and k . 25
PEI
Annex B (informative) A-deviations . 27
Annex ZZ (informative) Relationship between this European Standard and the
ecodesign requirements of Commission Regulation (EU) No 548/2014 aimed to
be covered . 28
Bibliography . 31
European foreword
This document (EN 50588-1:2017) has been prepared by CLC/TC 14 "Power transformers".
The following dates are fixed:
(dop) [2018-07-03]
• latest date by which this document has
to be implemented at national level by
publication of an identical national
standard or by endorsement
• latest date by which the national (dow) [2020-07-03]
standards conflicting with this
document have to be withdrawn
This document supersedes EN 50588-1:2015 and EN 50588-1:2015/A1:2016.
EN 50588-1:2015 and EN 50588-1:2015/A1:2016:
- definition of declared values.
This document has been prepared under a mandate given to CENELEC by the European Commission
and the European Free Trade Association, and supports essential requirements of EU Directive(s).
For the relationship with EU Directive(s) see informative Annex ZZ, which is an integral part of this
document.
1 Scope
This European Standard covers medium power transformers. ‘Medium power transformer’ means a
power transformer with a highest voltage for equipment higher than 1,1 kV, but not exceeding 36 kV
and a rated power equal to or higher than 5 kVA but lower than 40 MVA.
National practices may require the use of highest voltages for equipment up to (but not including)
52 kV, when the rated voltage is less than 36 kV (such as U = 38,5 kV or U = 40,5 kV). This is
m m
considered to be an unusual case of a large power transformer, where the requirements are those for
a medium power transformer with U = 36 kV.
m
NOTE 1 ‘Large power transformer’ means a power transformer with a highest voltage for equipment
exceeding 36 kV and a rated power equal to or higher than 5 kVA, or a rated power equal to or higher than
40 MVA regardless of the highest voltage for equipment. Large power transformers are in the scope of EN 50629.
NOTE 2 Transformers with tap changer (DETC or OLTC) are included in this European Standard even if they
have separate tapping winding.
The object of this European Standard is to set up requirements related to electrical characteristics
and design of medium power transformers.
The following transformers are excluded from this European Standard:
a) instrument transformers, specifically designed to supply measuring instruments, meters, relays
and other similar apparatus;
b) transformers with low-voltage windings specifically designed for use with rectifiers to provide a
DC supply;
c) transformers specifically designed to be directly connected to a furnace;
d) transformers specifically designed for offshore applications and floating offshore applications;
e) transformers specially designed for emergency installations;
f) transformers and auto-transformers specifically designed for railway feeding systems;
g) earthing or grounding transformers, this is, three-phase transformers intended to provide a
neutral point for system grounding purposes;
h) traction transformers mounted on rolling stock, this is, transformers connected to an AC or DC
contact line, directly or through a converter, used in fixed installations of railway applications;
i) starting transformers, specifically designed for starting three-phase induction motors so as to
eliminate supply voltage dips;
j) testing transformers, specifically designed to be used in a circuit to produce a specific voltage or
current for the purpose of testing electrical equipment;
k) welding transformers, specifically designed for use in arc welding equipment or resistance
welding equipment;
l) transformers specifically designed for explosion-proof and underground mining applications;
m) transformers specifically designed for deep water (submerged) applications;
n) medium Voltage (MV) to Medium Voltage (MV) interface transformers up to 5 MVA;
o) large power transformers where it is demonstrated that for a particular application, technically
feasible alternatives are not available to meet the minimum efficiency requirements set out by
the commission regulation (EU) No 548/2014;
p) 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.
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 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments)
applies.
EN 50180, Bushings above 1 kV up to 52 kV and from 250 A to 3,15 kA for liquid filled transformers
– Part 1: General requirements for bushings
EN 50181, Plug-in type bushings above 1 kV up to 52 kV and from 250 A to 2,50 kA for equipment
other than liquid filled transformers
EN 50216 (all parts), Power transformer and reactor fittings
EN 50329, Railway applications - Fixed installations - Traction transformers
EN 50386, Bushings up to 1 kV and from 250 A to 5 kA, for liquid filled transformers
EN 50387, Busbar bushings up to 1 kV and from 1,25 kA to 5 kA, for liquid filled transformers
EN 50464-4, 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
EN 60076-1:2011, Power transformers - Part 1: General (IEC 60076-1:2011)
EN 60076-6:2008, Power transformers - Part 6: Reactors (IEC 60076-6:2007)
EN 60076 (all parts), Power transformers (IEC 60076, all parts)
EN 60085, Electrical insulation - Thermal evaluation and designation (IEC 60085)
EN 60505, Evaluation and qualification of electrical insulation systems (IEC 60505)
EN 61100, Classification of insulating liquids according to fire point and net calorific value (IEC 61100)
EN 61378-1, Convertor transformers - Part 1: Transformers for industrial applications (IEC 61378-1)
EN 61869-1:2009, Instrument transformers - Part 1: General requirements
IEC/TR 60616, Terminal and tapping markings for power transformers
3 Terms and definitions
For the purposes of this document, the terms and definitions given in EN 60076-1:2011 and the
following apply.
3.1
load factor
k
ratio of actual input current over the rated current of transformer where the actual current and rated
current are constant over time
Note 1 to entry: Normally 0 ≤ k ≤ 1.
3.2
transmitted apparent powe
...
ba
SLOVENSKI SIST EN 50588-1
STANDARD november 2017
Srednji močnostni transformatorji 50 Hz z najvišjo napetostjo naprave do
36 kV – 1. del: Splošne zahteve
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 la plus élevée pour le
matériel ne dépassant pas 36 kV – Partie 1: Exigences générales
Mittelleistungstransformatoren 50 Hz, mit einer höchsten Spannung für
Betriebsmittel nicht über 36 kV – Teil 1: Allgemeine Anforderungen
Referenčna oznaka
ICS 29.180 SIST EN 50588-1:2017 (sl)
Nadaljevanje na straneh II do III in od 1 do 32
© 2018-09. Slovenski inštitut za standardizacijo. Razmnoževanje ali kopiranje celote ali delov tega standarda ni dovoljeno.
SIST EN 50588-1 : 2017
NACIONALNI UVOD
Standard SIST EN 50588-1 (sl), Srednji močnostni transformatorji 50 Hz z najvišjo napetostjo naprave
do 36 kV – 1. del: Splošne zahteve, 2017, ima status slovenskega standarda in je istoveten evropskemu
standardu EN 50588-1 (en), Medium power transformers 50 Hz, with highest voltage for equipment not
exceeding 36 kV – Part 1: General requirements, 2017.
Ta standard nadomešča SIST EN 50588-1:2015 in SIST EN 50588-1:2015/A1:2016.
NACIONALNI PREDGOVOR
Evropski standard EN 50588-1:2017 je pripravil tehnični odbor Evropskega komiteja za standardizacijo
v elektrotehniki CLC/TC 14 Močnostni transformatorji. Slovenski standard SIST EN 50588-1:2017 je
prevod evropskega standarda EN 50588-1:2017. V primeru spora glede besedila slovenskega prevoda
v tem standardu je odločilen izvirni evropski standard v angleškem jeziku. Slovensko izdajo standarda
je potrdil tehnični odbor SIST/TC ETR Energetski transformatorji.
Odločitev za privzem tega standarda je dne 1. novembra 2017 sprejel tehnični odbor SIST/TC ETR
Energetski transformatorji.
ZVEZA S STANDARDI
SIST EN 50180 Skoznjiki za napetosti nad 1 kV do 52 kV in tokove od 250 A do 3,15 kA za
transformatorje, polnjene s tekočinami
SIST EN 50181 Vtični skoznjiki za napetosti nad 1 kV do 52 kV in tokove od 250 A do 2,50
kA za opremo, razen za transformatorje, polnjene s tekočinami
SIST EN 50216 (vsi deli) Pribor za energijske transformatorje in dušilke
SIST EN 50329 Železniške naprave – Stabilne naprave električne vleke – Transformatorji
vlečnih tokokrogov
SIST EN 50386 Skoznjiki za napetosti do 1 kV in tokove od 250 A do 5 kA za transformatorje,
polnjene s tekočino
SIST EN 50387 Zbiralčni skoznjiki za napetosti do 1 kV in od 1,25 kA do 5 kA za transformatorje,
polnjene s tekočinami
SIST EN 50464-4 Trifazni oljni distribucijski transformatorji 50 Hz, od 50 kVA do 2 500 kVA z
najvišjo napetostjo naprave do 36 kV – 4. del: Zahteve in preskušanje v zvezi
s tlačnimi kotli z valovito steno
SIST EN 60076-1:2012 Močnostni transformatorji – 1. del: Splošno (IEC 60076-1:2011)
SIST EN 60076-6:2008 Močnostni transformatorji – 6. del: Dušilke (IEC 60076-6:2007)
SIST EN 60076 (vsi deli) Močnostni transformatorji (IEC 60076, vsi deli)
SIST EN 60085 Ocenjevanje toplotnih lastnosti in označevanje električne izolacije (IEC
60085)
SIST EN 60505 Vrednotenje in kvalificiranje električnih izolacijskih sistemov (IEC 60505)
SIST EN 61100 Klasifikacija izolacijskih tekočin glede na vnetišče in čisto kalorično vrednost
(IEC 61100)
SIST EN 61378-1 Konvertorski transformatorji – 1. del: Transformatorji za industrijsko uporabo
(IEC 61378-1)
SIST EN 61869-1:2009 Merilni transformatorji – 1. del: Splošne zahteve
SIST IEC/TR 60616 Oznake priključkov in odcepov močnostnih transformatorjev
II
SIST EN 13108-7 : 2017
OSNOVA ZA IZDAJO STANDARDA
‒ privzem standarda EN 50588-1:2017
PREDHODNA IZDAJA
‒ SIST EN 50588-1:2015 in SIST EN 50588-1:2015/A1:2016, Močnostni transformatorji srednje moči
50 Hz z najvišjo napetostjo naprave do 36 kV – 1. del: Splošne zahteve
OPOMBE
– Povsod, kjer se v besedilu standarda uporablja izraz “evropski standard”, v SIST EN 50588-1:2017
to pomeni “slovenski standard”.
– Nacionalni uvod in nacionalni predgovor nista sestavni del standarda.
– Ta nacionalni dokument je istoveten EN 50588-1:2017 in je objavljen z dovoljenjem
CEN-CENELEC
Upravni center
Avenue Marnix 17
B-1000 Bruselj
This national document is identical with EN 50588-1:2017 and is published with the
permission of
CEN-CENELEC
Management Centre
Avenue Marnix 17
B -1000 Brussels
III
SIST EN 50588-1 : 2017
(prazna stran)
IV
EVROPSKI STANDARD EN 50588-1
EUROPEAN STANDARD
NORME EUROPÉENNE
september 2017
EUROPÄISCHE NORM
ICS 29.180 Nadomešča EN 50588-1:2015
Slovenska izdaja
Srednji močnostni transformatorji 50 Hz z najvišjo napetostjo naprave do
36 kV – 1. del: Splošne zahteve
Medium power transformers 50 Transformateurs 50 Hz de Mittelleistungstransformatoren
Hz, with highest voltage for moyenne puissance, de tension 50 Hz, mit einer höchsten
equipment not exceeding 36 kV la plus élevée pour le matériel Spannung für Betriebsmittel
– Part 1: General requirements ne dépassant pas 36 kV – nicht über 36 kV – Teil 1:
Partie 1: Exigences générales Allgemeine Anforderungen
Ta evropski standard je CENELEC sprejel 1. julija 2017. Člani CENELEC morajo izpolnjevati notranje
predpise CEN/CENELEC, ki določajo pogoje, pod katerimi dobi ta evropski standard status
nacionalnega standarda brez kakršnihkoli sprememb.
Najnovejši seznami teh nacionalnih standardov in njihovi bibliografski podatki se na zahtevo lahko dobijo
pri Upravnem centru CEN-CENELEC ali kateremkoli članu CENELEC.
Ta evropski standard obstaja v treh uradnih izdajah (angleški, francoski in nemški). Izdaje v drugih
jezikih, ki jih člani CENELEC na lastno odgovornost prevedejo in izdajo ter priglasijo pri Upravnem
centru CEN-CENELEC, imajo enak status kot uradne izdaje.
Člani CENELEC so nacionalni elektrotehniški komiteji Avstrije, Belgije, Bolgarije, Hrvaške, Cipra, Češke
republike, Danske, Estonije, Finske, Francije, Nemčije, Grčije, Madžarske, Islandije, Irske, Italije, Latvije,
Litve, Luksemburga, Malte, Nekdanje Jugoslovanske republike Makedonije, Nizozemske, Norveške,
Poljske, Portugalske, Romunije, Srbije, Slovaške, Slovenije, Španije, Švedske, Švice, Turčije in
Združenega kraljestva.
CENELEC
Evropski komite za standardizacijo v elektrotehniki
European Committee for Electrotechnical Standardisation
Europäisches Komitee für Elektrotechnische Normung
Comité Européen de Normalisation Electrotechnique
Upravni center: Avenue Marnix 17, B - 1000 Bruselj
© 2017 CENELEC - Lastnice avtorskih pravic so vse države članice CENELEC Ref. oznaka EN 50588-1:2017 E
SIST EN 50588-1 : 2017
VSEBINA Stran
Evropski predgovor . 3
1 Področje uporabe . 4
2 Zveze s standardi . 5
3 Izrazi in definicije . 6
4 Okoljski razredi . 8
5 Električne karakteristike . 8
5.1 Najvišje napetosti naprav za navitje z U > 1,1 kV . 8
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5.2 Naznačena napetost za navitje z U ≤ 1,1 kV . 8
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5.3 Odcepi . 9
5.4 Oznake vezave trifaznih transformatorjev . 9
6 Kratkostične izgube, izgube prostega teka, PEI, raven zvočne moči, kratkostična impedanca . 9
6.1 Splošno . 9
6.2 Transformatorji z naznačeno močjo S ≤ 3 150 kVA . 11
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6.3 Transformatorji z naznačeno močjo 3 150 kVA < S < 40 000 kVA . 15
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6.4 Transformatorji s posebnimi zahtevami . 17
7 Odstopanja . 19
7.1 Odstopanja med prevzemnimi preskusi v tovarni . 19
7.2 Odstopanja pri nadzoru trga . 19
7.3 Negotovosti pri preverjanju pri nadzoru na trgu . 20
8 Napisna ploščica . 20
9 Preskusi . 21
9.1 Redni preskusi . 21
9.2 Preskusi tipa . 21
9.3 Posebni preskusi . 21
9.4 Posebni preskusi kotla z valovito steno . 21
9.5 Druge tehnologije z ravnjo izgub prostega teka AAA0 . 23
10 Konstrukcijske zahteve . 23
10.1 Tekočinski transformatorji . 23
10.2 Suhi transformatorji . 24
11 Pribor . 24
11.1 Tekočinski transformatorji . 24
11.2 Suhi transformatorji . 25
Dodatek A (informativni): Izračun PEI in k . 26
PEI
Dodatek B (informativni): A-deviacije . 28
Dodatek ZZ (informativni): Razmerje med tem evropskim standardom in zahtevami za
okoljsko primerno zasnovo Uredbe Komisije (EU) št. 548/2014, ki jih je treba izpolniti . 29
Literatura. 32
SIST EN 50588-1 : 2017
Evropski predgovor
Ta dokument (EN 50588-1:2017) je pripravil tehnični odbor CLC/TC 14 "Močnostni transformatorji".
Določena sta bila naslednja roka:
‒ zadnji datum, do katerega mora EN dobiti status
nacionalnega standarda, bodisi z objavo istovetnega
besedila ali z razglasitvijo (dop) 2018-07-03
‒ zadnji datum, do katerega morajo biti
razveljavljeni vsi nacionalni standardi, ki niso
skladni s tem dokumentom. (dow) 2020-07-03
Ta dokument nadomešča EN 50588-1:2015 in EN 50588-1:2015/A1:2016.
Standard EN 50588-1:2017 vsebuje naslednje pomembne tehnične spremembe v primerjavi z EN
50588-1:2015 in EN 50588-1:2015/A1:2016:
‒ definicijo dogovorjenih vrednosti.
Ta dokument je bil pripravljen v okviru mandata, ki sta ga Evropska komisija in Evropsko združenje za
prosto trgovino dala CENELEC, in podpira bistvene zahteve direktive Evropske unije. Dokument podpira
bistvene zahteve direktiv EU.
Za zveze z direktivami EU glej informativni dodatek ZZ, ki je sestavni del tega dokumenta.
SIST EN 50588-1 : 2018
1 Področje uporabe
Ta evropski standard obravnava srednje močnostne transformatorje. "Srednji močnostni transformator"
je močnostni transformator, pri katerem najvišja napetost naprave presega 1,1 kV, a ne presega 36 kV,
in je naznačena moč enaka ali višja od 5 kVA, vendar nižja od 40 MVA.
V nacionalnih praksah je pri naznačeni napetosti, nižji od 36 kV, lahko zahtevana uporaba najvišjih
napetosti naprave do (vendar ne vključno) 52 kV (npr. U = 38,5 kV ali U = 40,5 kV). To se obravnava
m m
kot neobičajen primer velikega močnostnega transformatorja z zahtevami za srednji močnostni
transformator z U = 36 kV.
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OPOMBA 1: "Velik močnostni transformator" je močnostni transformator, pri katerem najvišja napetost naprave presega 36 kV
in je naznačena moč enaka ali višja od 5 kVA ali je naznačena moč enaka ali višja od 40 MVA ne glede na najvišjo
napetost naprave. Veliki močnostni transformatorji spadajo v področje uporabe standarda EN 50629.
OPOMBA 2: Transformatorji z odcepnim preklopnikom (nebremenskim ali bremenskim) so zajeti v tem evropskem standardu,
tudi če imajo ločeno regulacijsko navitje.
Namen tega evropskega standarda je določiti zahteve v povezavi
...
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