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IEEE C57.12.70-2000

Historical Revision

IEEE Standard for Standard Terminal Markings and Connections for Distribution and Power Transformers

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Revision Standard - Superseded. 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.
Terminal markings and connections for distribution and power transformers, not including rectifier transformers.
To review and update C57.12.70 which was last issued in 1978.

SDO IEEE: Institute of Electrical and Electronics Engineers
Document Number C57.12.70
Publication Date March 16, 2001
Language en - English
Page Count 32
Revision Level
Supercedes
Committee Transformers
Publish Date Document Id Type View
Sept. 28, 2020 C57.12.70-2020 Revision
Feb. 7, 2012 C57.12.70-2011 Revision
March 16, 2001 C57.12.70-2000 Revision