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IEEE C57.12.10

2010 Edition, September 30, 2010

Complete Document

REQUIREMENTS FOR LIQUID-IMMERSED POWER TRANSFORMERS

Includes all amendments and changes through CRGD, October 31, 2013


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Description / Abstract:

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 equipment covered, and to assist in the proper selection of such equipment.

This document is a product standard that covers certain electrical, dimensional, and mechanical characteristics of 50 Hz and 60 Hz, liquid-immersed power transformers and autotransformers. Such power transformers may be remotely or integrally associated with either primary switchgear or substations, or both, for step-down or step-up purposes and base rated as follows: 833 kVA and above single-phase, 750 kVA and above three-phase.

This standard applies to all liquid-immersed power transformers and autotransformers that do not belong to the following types of apparatus:

a) Instrument transformers

b) Step voltage and induction voltage regulators

c) Arc-furnace transformers

d) Rectifier transformers

e) Specialty transformers

f) Grounding transformers

g) Mobile transformers

h) Mine transformers

Purpose

When this standard is used on a mandatory basis, the word shall indicates mandatory requirements, and the words should and may refer to matters that are recommended and permitted, respectively, but not mandatory.

NOTE—The introduction of this standard describes the circumstances under which the document may be used on a mandatory basis.1

1Notes in text, tables, and figures of a standard are given for information only and do not contain requirements needed to implement the standard.