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IEEE C57.12.70

Standard Terminal Markings and Connections for Distribution and Power Transformers

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Organization: IEEE
Publication Date: 24 September 2020
Status: active
Page Count: 59
scope:

This standard defines the terminal markings and connections for distribution, power, and regulating transformers covered in the IEEE C57™ series of standards, guides, and recommended practices.

Purpose

The standard provides a consistent method for terminal markings and connections for single-phase and three-phase distribution, power, and regulating transformers. It designates terminal markings for interchangeability showing the sequence, external terminations, neutral terminations, grounded terminations, and marking of full and tap winding terminations. It also puts forth the connections of single-phase transformers in various configurations and describes the angular displacement of three-phase transformers when connected to various system phase displacements.

Document History

IEEE C57.12.70
September 24, 2020
Standard Terminal Markings and Connections for Distribution and Power Transformers
This standard defines the terminal markings and connections for distribution, power, and regulating transformers covered in the IEEE C57™ series of standards, guides, and recommended practices....
IEEE C57.12.70
December 7, 2011
Standard Terminal Markings and Connections for Distribution and Power Transformers
This standard defines the terminal markings and connections for distribution, power, and regulating transformers covered in the IEEE C57 series of standards, guides, and recommended practices....
IEEE C57.12.70
December 7, 2000
Standard Terminal Markings and Connections for Distribution and Power Transformers
This standard describes the terminal markings and connections for distribution, power, and regulating transformers covered in the C57 series of IEEE and ANSI standards, guides, and recommended...
IEEE C57.12.70
December 7, 2000
Standard Terminal Markings and Connections for Distribution and Power Transformers
This standard describes the terminal markings and connections for distribution, power, and regulating transformers covered in the C57 series of IEEE and ANSI standards, guides, and recommended...
C57.12.70
January 1, 1978
American National Standard Terminal Markings and Connections for Distribution and Power Transformers
A description is not available for this item.

References

This document references:
IEEE C57.12.01 - General Requirements for Dry-Type Distribution and Power Transformers
Published by IEEE on September 24, 2020
This standard describes electrical and mechanical requirements of single and polyphase ventilated, nonventilated, and sealed dry-type distribution and power transformers or autotransformers, with a...
This document references:
IEEE C57.12.00 - General Requirements for Liquid-Immersed Distribution, Power, and Regulating Transformers
Published by IEEE on December 5, 2015
This standard describes electrical and mechanical requirements of liquid-immersed distribution and power transformers, and autotransformers and regulating transformers, single-phase and polyphase,...
This document references:
IEC 60076-1 - Power transformers – Part 1: General
Published by IEC on April 1, 2011
This part of IEC 60076 applies to three-phase and single-phase power transformers (including auto-transformers) with the exception of certain categories of small and special transformers such as: –...
This document references:
IEEE C37.91 - Guide for Protective Relay Applications to Power Transformers
Published by IEEE on May 30, 2008
The scope of this guide includes general philosophy, practical applications, and economic considerations involved in power transformer protection. Emphasis is placed on practical applications....
This document references:
IEEE C57.12.00 - General Requirements for Liquid-Immersed Distribution, Power, and Regulating Transformers
Published by IEEE on December 5, 2015
This standard describes electrical and mechanical requirements of liquid-immersed distribution and power transformers, and autotransformers and regulating transformers, single-phase and polyphase,...
This document references:
IEEE C57.12.01 - General Requirements for Dry-Type Distribution and Power Transformers
Published by IEEE on September 24, 2020
This standard describes electrical and mechanical requirements of single and polyphase ventilated, nonventilated, and sealed dry-type distribution and power transformers or autotransformers, with a...
This document references:
IEEE C57.12.10 - Requirements for Liquid-Immersed Power Transformers
Published by IEEE on December 6, 2017
This voluntary consensus standard sets forth the requirements for power transformer application. This standard is intended to be used as a basis for performance, interchangeability, and safety of the...
This document is referenced by:
UFGS-35 05 40.14 10 - HYDRAULIC POWER SYSTEMS FOR CIVIL WORKS STRUCTURES
Published by ARMY on May 1, 2014
NOTE: This guide specification covers the requirements for hydraulic power systems to operate gates and other mechanisms at civil works structures. This section was originally developed for USACE...
This document is referenced by:
CSA C9 - Dry-type transformers
Published by CSA on January 1, 2017
This Standard applies to single phase and polyphase dry-type transformers, including those with cast or resin encapsulated coils, that are within the limits of the electrical ratings specified in...
This document is referenced by:
IEEE C57.12.91 - Test Code for Dry-Type Distribution and Power Transformers
Published by IEEE on September 24, 2020
This standard describes methods for performing tests specified in IEEE Std C.57.12.01 and other referenced standards applicable to dry-type distribution and power transformers, with a voltage of 601...
This document is referenced by:
ANSI C37.121 - American National Standard for Switchgear Unit Substations Requirements
Published by IEEE on January 1, 1989
Foreword (This Foreword is not part of American National Standard C37.121-1989.) This new standard has been developed to outline the requirements for unit substations, utilizing other documents such...
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