Supersedes C57.12.70-1978 (R1992). Standard terminal markings and connections are described for single-phase and three-phase distribution,power,and regulating transformers.For terminal markings,it covers sequence designation, external terminal designation, neutral terminal designation, grounded terminal designation, and marking of full and tap winding terminals. Additive and subtractive polarity and parallel transformer operation are described.Connections of single-phase transformers in various configurations and angular displacement of three-phase transformers to connect to various system phase displacements are covered.
- Sponsor Committee
- PE/TR - Transformers
Learn More - Status
- Superseded Standard
- PAR Approval
- 1995-06-14
- Superseded by
- C57.12.70-2011
- Superseding
- C57.12.70-1978
- Board Approval
- 2000-12-07
- History
-
- ANSI Approved:
- 2001-05-03
- Published:
- 2001-03-16
- Reaffirmed:
- 2006-03-30
Working Group Details
- Society
- IEEE Power and Energy Society
Learn More - Sponsor Committee
- PE/TR - Transformers
Learn More - Working Group
-
Stds-WGC57.12.70 - Standard Terminal Markings and Connections for Distribution and Power Working Group
Learn More - IEEE Program Manager
- Malia Zaman
Contact - Working Group Chair
- Jason Varnell
No Active Projects
C57.12.70-2020
IEEE Standard for Standard Terminal Markings and Connections for Distribution and Power Transformers
Standard terminal markings and connections are described for single-phase and three phase distribution, power, and regulating transformers. For terminal markings, it covers sequence designation, external terminal designation, neutral terminal designation, grounded terminal designation, and marking of full and tap winding terminals. Additive and subtractive polarity and parallel transformer operation are described. Connections of single-phase transformers in various configurations and angular displacement of three-phase transformers to connect to various system phase displacements are covered.
C57.12.70-2011
IEEE Standard for Standard Terminal Markings and Connections for Distribution and Power Transformers
Standard terminal markings and connections are described for single-phase and three phase distribution, power, and regulating transformers. For terminal markings, it covers sequence designation, external terminal designation, neutral terminal designation, grounded terminal designation, and marking of full and tap winding terminals. Additive and subtractive polarity and parallel transformer operation are described. Connections of single-phase transformers in various configurations and angular displacement of three-phase transformers to connect to various system phase displacements are covered.
No Inactive-Withdrawn Standards
No Inactive-Reserved Standards