EN IEC/IEEE 60076-57-1202:2025/A11:2025
(Amendment)Power transformers - Part 57-1202: Liquid immersed phase-shifting transformers
Power transformers - Part 57-1202: Liquid immersed phase-shifting transformers
This standard covers the requirements for phase-shifting transformers of all types. The scope excludes transformers with an unregulated phase shift. This document is limited to matters particular to phase-shifting transformers and does not include matters relating to general requirements for power transformers covered in existing standards in the EN 60076 series.
Leistungstransformatoren - Teil 57-1202: Ölgefüllte Phasenschieber
Transformateurs de puissance - Partie 57-1202: Transformateurs déphaseurs immergés dans un liquide
Močnostni transformatorji - 57-1202. del: Transformatorji s prečnim premikom faze, potopljeni v tekočino - Dopolnilo A11
Ta standard zajema zahteve za transformatorje s prečnim premikom faze vseh vrst. Področje uporabe ne vključuje transformatorjev z nereguliranim prečnim premikom faze. Ta dokument je omejen na vprašanja, specifična za transformatorje s prečnim premikom faze, in ne vključuje vprašanj, povezanih s splošnimi zahtevami za močnostne transformatorje, ki so zajeti v obstoječih standardih skupine standardov EN 60076.
General Information
- Status
- Published
- Publication Date
- 17-Apr-2025
- Technical Committee
- CLC/TC 14 - Power transformers
- Current Stage
- 6060 - Document made available - Publishing
- Start Date
- 18-Apr-2025
- Due Date
- 13-Feb-2025
- Completion Date
- 18-Apr-2025
Relations
- Effective Date
- 03-Feb-2026
- Effective Date
- 03-Feb-2026
- Effective Date
- 03-Feb-2026
- Effective Date
- 11-Oct-2022
Overview
EN IEC/IEEE 60076-57-1202:2025/A11:2025 specifies the requirements for liquid immersed phase-shifting transformers. Issued by the CLC and developed with input from international and European technical committees, this standard applies to all types of phase-shifting transformers except those with unregulated phase shifts. It addresses aspects unique to phase-shifting transformer (PST) design, construction, testing, and performance, while referencing established standards for general transformer requirements, such as those in the EN 60076 series.
Phase-shifting transformers are critical components in electrical power systems for controlling power flow and improving grid stability. This standard is designed to ensure harmonized quality, safety, energy performance, and interoperability across Europe and globally.
Key Topics
EN IEC/IEEE 60076-57-1202:2025/A11:2025 covers several essential topics specific to liquid immersed phase-shifting transformers:
- Normative References: Clarifies applicable European (EN) and IEC standards, including parts of EN 50708 and IEC 60076.
- Scope of Application: Exclusively addresses requirements for phase-shifting transformers, with additional European requirements not covered in base power transformer standards.
- Energy Performance: Introduces mandatory compliance with energy efficiency performance as defined in related EN 50708 documents.
- Transport Guidance: Notes the importance of safe handling during transit, referencing CIGRE guidance for best practices.
- Liquid Insulation & Preservation: Specifies requirements for insulation, preservation systems, and the terminology for protection devices per EN IEC 60076-22-1.
- Testing and Classification: Clarifies conditions for lightning impulse testing and the precedence of specific test requirements over general standards.
- Documented Information Requirements: Details the essential standards and technical particulars that must be supplied for compliance.
Applications
Liquid immersed phase-shifting transformers governed by this standard are widely used in:
- Transmission Grid Management: Optimizing power flow, voltage regulation, and load balancing on transmission networks.
- Interconnection Points: Managing unforeseen power swings between asynchronous or weakly interconnected power systems.
- Enhanced Grid Stability: Supporting grid code compliance and congestion management, crucial in regions with high renewable energy penetration.
- Industrial and Utility Installations: Implementing sophisticated power management strategies in large industrial complexes or regional utility networks.
By setting harmonized requirements for construction, performance, and testing, this standard enables manufacturers, utilities, and system operators to achieve high reliability, operational efficiency, and compliance with European and international requirements.
Related Standards
Several related standards provide foundational requirements or are referenced for specific technical aspects in EN IEC/IEEE 60076-57-1202:2025/A11:2025:
- EN 60076-1, -2, -3, -5, -10, -18: General, temperature rise, insulation, short circuit, sound level, and frequency response for power transformers.
- EN 50708-1-1, -2-1, -3-1: Additional European requirements for medium or large power transformers.
- EN IEC 60076-22 series: Fittings for power transformers, including protective devices, cooling equipment, and communication-ready devices.
- IEC 60214-1: Performance and test methods for tap-changers.
- CIGRE Brochure 673: Practical guidance on transformer transportation.
- ISO 2178, ISO 2409: Coating and paint testing referenced for transformer finishes.
By aligning with these documents, stakeholders enhance interoperability, streamline procurement, and facilitate regulatory compliance throughout the transformer lifecycle.
Keywords: phase-shifting transformers, liquid immersed transformer, power transformer standards, EN IEC/IEEE 60076, grid stability, transformer energy performance, European transformer requirements
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Frequently Asked Questions
EN IEC/IEEE 60076-57-1202:2025/A11:2025 is a amendment published by CLC. Its full title is "Power transformers - Part 57-1202: Liquid immersed phase-shifting transformers". This standard covers: This standard covers the requirements for phase-shifting transformers of all types. The scope excludes transformers with an unregulated phase shift. This document is limited to matters particular to phase-shifting transformers and does not include matters relating to general requirements for power transformers covered in existing standards in the EN 60076 series.
This standard covers the requirements for phase-shifting transformers of all types. The scope excludes transformers with an unregulated phase shift. This document is limited to matters particular to phase-shifting transformers and does not include matters relating to general requirements for power transformers covered in existing standards in the EN 60076 series.
EN IEC/IEEE 60076-57-1202:2025/A11:2025 is classified under the following ICS (International Classification for Standards) categories: 29.180 - Transformers. Reactors. The ICS classification helps identify the subject area and facilitates finding related standards.
EN IEC/IEEE 60076-57-1202:2025/A11:2025 has the following relationships with other standards: It is inter standard links to EN 50708-3-1:2020, EN 50708-2-1:2020, prEN 50708-1-1:2023, EN IEC/IEEE 60076-57-1202:2025. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
EN IEC/IEEE 60076-57-1202:2025/A11:2025 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN IEC/IEEE 60076-57-
1202:2025/A11:2025
01-junij-2025
Močnostni transformatorji - 57-1202. del: Transformatorji s prečnim premikom
faze, potopljeni v tekočino - Dopolnilo A11
Power transformers - Part 57-1202: Liquid immersed phase-shifting transformers
Leistungstransformatoren - Teil 57-1202: Ölgefüllte Phasenschieber
Transformateurs de puissance - Partie 57-1202: Transformateurs déphaseurs immergés
dans un liquide
Ta slovenski standard je istoveten z: EN IEC/IEEE 60076-57-1202:2025/A11:2025
ICS:
29.180 Transformatorji. Dušilke Transformers. Reactors
SIST EN IEC/IEEE 60076-57- en
1202:2025/A11:2025
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EUROPEAN STANDARD EN IEC/IEEE 60076-57-
1202:2025/A11
NORME EUROPÉENNE
EUROPÄISCHE NORM
April 2025
ICS 29.180
English Version
Power transformers - Part 57-1202: Liquid immersed phase-
shifting transformers
Transformateurs de puissance - Partie 57-1202: Leistungstransformatoren - Teil 57-1202: Ölgefüllte
Transformateurs déphaseurs immergés dans un liquide Phasenschieber
This amendment A11 modifies the European Standard EN IEC/IEEE 60076-57-1202:2025; it was approved by CENELEC on 2025-03-26.
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, 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
© 2025 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN IEC/IEEE 60076-57-1202:2025/A11: E
Contents Page
European foreword . 3
1 Modifications to Clause 2, “Normative references” . 4
2 Modification to Clause 4, “Use of normative references” . 4
3 Modification to 6.14, “Transport” . 4
4 Modification to Clause 6, “Rating and general requirements” . 4
5 Modification to 7.3, “Liquid insulation and preservation system” . 4
6 Modification to 7.4, “Alignment between tanks” . 4
7 Modification to 13.12.5, “Lightning impulses applied to multiple line terminals
simultaneously (LIMT)” . 5
8 Modification to A.1.1, “Normal information” . 5
9 Addition of Annex ZA, “Normative references to international publications with their
corresponding European publications” . 5
10 Modification to “Bibliography” . 6
European foreword
This document (EN IEC/IEEE 60076-57-1202:2025/A11:2025) has been prepared by Technical Committee
CLC/TC 14 “Power transformers”.
The following dates are fixed:
• latest date by which this document has to be (dop) 2026-04-30
implemented at national level by publication of
an identical national standard or by
endorsement
• latest date by which the national standards (dow) 2028-04-30
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 shall not be held responsible for identifying any or all such patent rights.
Any feedback and questions on this document should be directed to the users’ national committee. A
complete listing of these bodies can be found on the CE
...
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