Superseded Standard

IEEE C57.105-1978

IEEE Guide for Application of Transformer Connections in Three-Phase Distribution Systems

The characteristics of the various transformer connections and possible operating problems under normal or abnormal conditions are treated for three-phase distribution systems. These systems are characterized by primary voltages up to and including 34.5 kV, usually have a preponderance of connected transformers with low-voltage windings below 1000 V, and furnish electric service to consumers. All combinations of Delta and Y, grounded and ungrounded, T connected, zigzag, and certain special connections are considered. Only two-winding transformers are included. Phasing procedures and loading practices are not covered.

Sponsor Committee
PE/TR - Transformers
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Status
Superseded Standard
Superseded by
C57.105-2019
Board Approval
1977-06-02
History
ANSI Approved:
1993-07-09
Published:
1978-10-20
Reaffirmed:
2008-03-27

Working Group Details

Society
IEEE Power and Energy Society
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Sponsor Committee
PE/TR - Transformers
Learn More About PE/TR - Transformers
Working Group
PerfCharac-WGC57.105 - Performance Characteristics - Transformer Connections in Three-Phase Dist Systems Working Group
IEEE Program Manager
Malia Zaman
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Working Group Chair
Roger Verdolin

Other Activities From This Working Group

Current projects that have been authorized by the IEEE SA Standards Board to develop a standard.


No Active Projects

Standards approved by the IEEE SA Standards Board that are within the 10-year lifecycle.


C57.105-2019

IEEE Guide for Application of Transformer Connections in Three-Phase Electrical Systems

Descriptions of products, methods, and procedures relating to stationary batteries, battery electrolyte spill mechanisms, electrolyte containment and control methodologies, and firefighting considerations are provided.

Learn More About C57.105-2019

C57.105-2019/Cor 1-2023

IEEE Approved Draft Guide for Application of Transformer Connections in Three-Phase Electrical Systems - Corrigendum 1: Update Table 1--Application characteristics of connections

This guide describes transformer connections and configurations in three-phase electrical systems. The characteristics of the various transformer connections and possible operating problems under normal or abnormal conditions are treated.nAll combinations of delta and wye, grounded and ungrounded, T connected, zigzag, and certain special connections are considered. Only two-winding and auto-transformers are included.

Learn More About C57.105-2019/Cor 1-2023

These standards have been replaced with a revised version of the standard, or by a compilation of the original active standard and all its existing amendments, corrigenda, and errata.


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