EN 61378-1:2011
(Main)Convertor transformers - Part 1: Transformers for industrial applications
Convertor transformers - Part 1: Transformers for industrial applications
IEC 61378-1:2011(E) deals with the specification, design and testing of power transformers and reactors which are intended for integration within semiconductor converter plants. The scope of this International Standard is limited to application of power converters of any power rating. Typical applications are: thyristor rectifiers for electrolysis; diode rectifiers for electrolysis; thyristor rectifiers for large drives; thyristor rectifiers for scrap melting furnaces, and diode rectifiers feeding inverters for variable speed drives. The standard also covers the regulating unit utilized in such application as step down regulating transformers or autotransformers. This edition includes the following significant technical changes with respect to the previous edition: - addition of winding connections with phase displacement (30°); - addition of transformers with more than one active part in the same tank; - change of reference power definition; - addition of regulating transformer feeding converter transformer; - addition of considerations about current sharing and hot spot temperature in high current windings for various winding arrangements; - addition of transductors used for d.c. voltage regulation together with diode rectifiers. The contents of the corrigendum of January 2012 have been included in this copy.
Stromrichtertransformatoren - Teil 1: Transformatoren für industrielle Anwendungen
Transformateurs de conversion - Partie 1: Transformateurs pour applications industrielles
L'IEC 61378-1:2011 traite de la spécification, la conception et l'essai des transformateurs de puissance et des réacteurs qui sont destinés à l'intégration au sein des convertisseurs à semi-conducteurs, il n'est pas applicable aux transformateurs conçus pour la distribution industrielle ou publique de pouvoir a.c. en général. Cette édition inclut les changements techniques significatifs suivants par rapport à la précédente édition: - Addition de couplages d'enroulements (zigzag, triangle prolongé, etc.) avec déphasage (<30°). - Addition de transformateurs ayant plus d'une partie active dans la même cuve. - Changement de la définition de la puissance de référence (elle est désormais basée sur la composante fondamentale du courant). - Addition de considérations pour des lignes directrices relatives à la sélection de changeurs de prise en charge (OLTC, On-Load Tap-Changers). - Addition du transformateur de régulation alimentant un transformateur de conversion. - Addition de considérations relatives à la répartition des courants et aux points chauds dans les enroulements à fort courant pour diverses dispositions d'enroulements. - Addition de transducteurs magnétiques pour la régulation de tension continue avec des redresseurs à diodes. - Amélioration des anciennes annexes avec plusieurs exemples de calcul. - Additions de nouvelles annexes pour les montages de mesure spéciaux.
Konvertorski transformatorji - 1. del: Transformatorji za industrijsko uporabo
Ta del IEC 61378 obravnava specifikacijo, projektiranje in preskušanje močnostnih transformatorjev in reaktorjev za vgradnjo v polprevodniško konvertorsko opremo; ne velja za transformatorje, projektirane za industrijsko ali javno distribucijo izmeničnega toka na splošno. Obseg tega mednarodnega standarda je omejen na uporabo močnostnih pretvornikov vseh nazivnih moči. Tipične uporabe so: tiristorski usmerniki za elektrolizo; diodni usmerniki za elektrolizo; tiristorski usmerniki za velike pogone; tiristorski usmerniki za peči za taljenje starega železa in diodni usmerniki, ki napajajo razsmernike za pogone s spremenljivimi hitrostmi. Standard zajema tudi regulacijsko enoto, ki se uporablja pri teh uporabah za uravnavanje transformatorjev ali avtotransformatorjev z zmanjševanjem napetosti. Najvišja napetost naprave ventilskega navitja je omejena na 36 kV. Ta standard ne velja za transformatorje za visokonapetostni enosmerni prenos toka. To so visokonapetostni transformatorji in zanje veljajo preskusi z enosmerno napetostjo. Standardi za popolno konvertorsko opremo (serija IEC 60146 ali druge objave za posamezna področja uporabe) lahko vsebujejo zahteve za jamstva in preskuse (kot so izolacija in izguba moči) za celotno opremo, vključno s konvertorskim transformatorjem in morebiti pomožnimi transformatorji in reaktorsko opremo. To ne razbremeni uporabe zahtev tega standarda v zvezi z jamstvi in preskusi, ki veljajo za sam konvertorski pretvornik kot ločeno komponento, preden se združi s preostalo konvertorsko opremo. Jamstva, preskusi delovanja in tipski preskusi v tem standardu veljajo enako za transformatorje, dobavljene kot del celotnega konvertorskega paketa, in za transformatorje, naročene ločeno, ki pa se uporabljajo s konvertorsko opremo. O dodatnih jamstvih ali posebnem preverjanju se je treba posebej dogovoriti v pogodbi o transformatorjih. Konvertorski transformatorji, ki jih zajema ta standard, so lahko oljni ali suhi. Razen če so v tem standardu navedene posebne izjeme, so transformatorji v skladu s serijo IEC 60076 za oljne transformatorje in z IEC 60076-11 za suhe transformatorje.
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-januar-2012
Konvertorski transformatorji - 1. del: Transformatorji za industrijsko uporabo
Converter transformers - Part 1: Transformers for industrial applications
Stromrichtertransformatoren - Teil 1: Transformatoren für industrielle Anwendungen
Transformateurs de conversion - Partie 1: Transformateurs pour applications
industrielles
Ta slovenski standard je istoveten z: EN 61378-1:2011
ICS:
29.180 Transformatorji. Dušilke Transformers. Reactors
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EUROPEAN STANDARD
EN 61378-1
NORME EUROPÉENNE
November 2011
EUROPÄISCHE NORM
ICS 29.180 Supersedes EN 61378-1:1998 + corr. Nov.1998
English version
Convertor transformers -
Part 1: Transformers for industrial applications
(IEC 61378-1:2011)
Transformateurs de conversion - Stromrichtertransformatoren -
Partie 1: Transformateurs pour Teil 1: Transformatoren für industrielle
applications industrielles Anwendungen
(CEI 61378-1:2011) (IEC 61378-1:2011)
This European Standard was approved by CENELEC on 2011-08-30. 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, Romania, Slovakia, Slovenia,
Spain, Sweden, Switzerland and the United Kingdom.
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 - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 61378-1:2011 E
Foreword
The text of document 14/686/FDIS, future edition 2 of IEC 61378-1, prepared by IEC/TC 14, "Power
transformers", was submitted to the IEC-CENELEC parallel vote and approved by CENELEC as
The following dates are fixed:
(dop) 2012-05-30
• latest date by which the document has
to be implemented at national level by
publication of an identical national
standard or by endorsement
(dow) 2014-08-30
• latest date by which the national
standards conflicting with the
document have to be withdrawn
This document supersedes EN 61378-1:1998 + corr. Nov.1998.
corr. Nov.1998:
• addition of winding connections (zig-zag, extended delta, etc.) with phase displacement (<30º);
• addition of transformers with more than one active part in the same tank;
• change of reference power definition (it is now based on fundamental component of the current);
• addition of considerations for guidelines for OLTC selection;
• addition of regulating transformer feeding converter transformer;
• addition of considerations about current sharing and hot spot temperature in high currentwindings for
various winding arrangements;
• addition of transductors used for d.c. voltage regulation together with diode rectifiers;
• improved old annexes with several calculation examples;
• addition of new annexes for special measurements setups.
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.
__________
Endorsement notice
The text of the International Standard IEC 61378-1:2011 was approved by CENELEC as a European
Standard without any modification.
In the official version, for Bibliography, the following notes have to be added for the standards indicated:
IEC 60076-4:2002 NOTE Harmonized as EN 60076-4:2002 (not modified).
IEC 60076-5:2006 NOTE Harmonized as EN 60076-5:2006 (not modified).
IEC 60076-10:2001 NOTE Harmonized as EN 60076-10:2001 (not modified).
IEC 60146-1-3:1991 NOTE Harmonized as EN 60146-1-3:1993 (not modified).
IEC 61378-2:2001 NOTE Harmonized as EN 61378-2:2001 (not modified).
__________
- 3 - EN 61378-1:2011
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications
The following referenced documents are indispensable for the application 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.
NOTE When an international publication has been modified by common modifications, indicated by (mod), the relevant EN/HD
applies.
Publication Year Title EN/HD Year
IEC 60050-421 1990 International electrotechnical vocabulary - -
(IEV) -
Chapter 421: Power transformers and
reactors
IEC 60076 Series Power transformers EN 60076 Series
IEC 60076-1 2011 Power transformers - EN 60076-1 2011
Part 1: General
IEC 60076-2 2011 Power transformers - EN 60076-2 2011
Part 2: Temperature rise for liquid-immersed
transformers
IEC 60076-3 2000 Power transformers - EN 60076-3 2001
+ corr. December 2000 Part 3: Insulation levels, dielectric tests and
external clearances in air
IEC 60076-6 2007 Power transformers - EN 60076-6 2008
Part 6: Reactors
IEC 60076-8 1997 Power transformers - - -
Part 8: Application guide
IEC 60076-11 2004 Power transformers - EN 60076-11 2004
Part 11: Dry-type transformers
IEC 60146 Series Semiconductor converters - General EN 60146 Series
requirements and line commutated converters
IEC 60146-1-1 2009 Semiconductor converters - General EN 60146-1-1 2010
requirements and line commutated
converters -
Part 1-1: Specification of basic requirements
IEC/TR 60146-1-2 2011 Semiconductor converters - General - -
requirements and line commutated
converters -
Part 1-2: Application guide
IEC/TR 60616 1978 Terminal and tapping markings for power - -
transformers
IEC 61378-1 ®
Edition 2.0 2011-07
INTERNATIONAL
STANDARD
colour
inside
Converter transformers –
Part 1: Transformers for industrial applications
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
PRICE CODE
XC
ICS 29.180 ISBN 978-2-88912-602-6
– 2 – 61378-1 © IEC:2011(E)
CONTENTS
FOREWORD . 6
1 Scope . 8
2 Normative references. 9
3 Terms, definitions and acronyms . 9
3.1 Terms and definitions . 9
3.2 Acronyms . 10
4 Classification . 11
4.1 General . 11
4.2 Normal service conditions . 11
4.3 Provision for unusual service conditions . 12
5 Ratings . 12
5.1 General . 12
5.2 Rated power at rated frequency and load capability . 12
5.3 Rated and service voltages . 13
5.3.1 Transformer energized from an a.c. power system . 13
5.3.2 Transformer energized from a converter/inverter with or without
variable frequency . 13
5.4 Rated current . 13
5.5 Phase displacement and terminal identification for three-phase transformer . 13
5.6 Rating plate . 14
5.7 Units with tertiary windings loaded with filter and compensation . 14
5.8 On load tap-changers . 15
6 Load loss and voltage drop in transformers and reactors . 15
6.1 General . 15
6.2 Determination of transformer load loss under distorted current loading . 15
6.3 Current sharing, losses and hot spot in high current windings . 19
6.4 Effect of geometrical winding arrangement and magnetic coupling between
windings on their eddy current losses due to harmonics in transformers with
three or more windings wound on the same core limb . 20
6.5 Losses in interphase transformers, current-balancing reactors, series-
smoothing reactors and transductors . 26
6.5.1 General . 26
6.5.2 Interphase transformers . 26
6.5.3 Current-balancing reactors . 26
6.5.4 Series-smoothing reactors . 26
6.5.5 Transductors . 26
6.6 Voltage drops in transformers and reactors . 27
6.6.1 General . 27
6.6.2 Transductors . 28
7 Tests for converter transformers . 29
7.1 General . 29
7.2 Measurement of commutating reactance and determination of the inductive
voltage drop . 30
7.2.1 Commutating reactance . 30
7.2.2 Inductive voltage regulation . 30
7.3 Measurement of voltage ratio and phase displacement . 31
7.4 Dielectric tests . 31
61378-1 © IEC:2011(E) – 3 –
7.4.1 General . 31
7.4.2 Dielectric test between interleaved valve windings . 31
7.5 Load loss test . 32
7.5.1 General . 32
7.5.2 Load loss measurement in rectifier transformers with transductors in
the same tank . 32
7.5.3 Test bus bars configuration for short circuit of high current valve
windings . 32
7.6 Temperature rise tests . 32
7.6.1 General . 32
7.6.2 Total loss injection . 33
7.6.3 Rated load loss injection . 33
7.6.4 Test of temperature rise on dry-type transformers . 35
8 On load noise level with transductors and/or IPT . 35
Annex A (informative) Determination of transformer service load loss at rated non-
sinusoidal converter current from measurements with rated transformer current
of fundamental frequency . 38
Annex B (informative) Short-circuit test currents and load losses in transformers for
single-way converters (total loss injection) .
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.