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IEEE DRAFT C57.12.40 : D4 2006

Withdrawn

Withdrawn

A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.

View Superseded by

SECONDARY NETWORK TRANSFORMERS, SUBWAY AND VAULT TYPES (LIQUID IMMERSED)

Withdrawn date

18-10-2023

Superseded by

IEEE C57.12.40-2011

Published date

12-01-2013

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Introduction
1 Overview
   1.1 Scope
   1.2 Purpose
2 References
3 Transformer performance requirements
   3.1 Kilovolt-ampere ratings
   3.2 Voltage rating and tap ratings
   3.3 Angular displacement
   3.4 Basic lightning impulse insulation levels
   3.5 Percent impedance
   3.6 Audible sound levels
4 Tests
5 Primary disconnect and grounding switch
   5.1 General
   5.2 Primary switch electrical performance requirements
   5.3 Primary switch mechanical features
   5.4 Primary switch accessory equipment
   5.5 Primary cable entrance
6 Construction
   6.1 General
   6.2 Corrosion Resistance
   6.3 Tank
   6.4 Accessory equipment for transformer tanks
   6.5 Dimensions
7 Bushings
   7.1 Primary bushings
   7.2 Secondary bushings
   7.3 Terminal markings
8 Neutral termination
   8.1 Primary neutral
   8.2 Secondary neutral
9 Nameplate
10 Connections of transformer for shipment by the manufacturer
Annex A

Describes certain electrical, dimensional, and mechanical characteristics and takes into consideration certain safety features of three-phase, 60 Hz, liquid-immersed, secondary network transformers with a three position grounding switch, subway and vault types, rated 2500 kVA and smaller; primary 34 400 volts and below; secondary 216Y/125 volts and 480Y/277 volts.

DocumentType
Draft
PublisherName
Institute of Electrical & Electronics Engineers
Status
Withdrawn
SupersededBy

IEEE C57.12.32-2002 IEEE Standard for Submersible Equipment - Enclosure Integrity
IEEE 386-2016 IEEE Standard for Separable Insulated Connector Systems for Power Distribution Systems Rated 2.5 kV through 35 kV
IEEE C57.12.00-2015 IEEE Standard for General Requirements for Liquid-Immersed Distribution, Power, and Regulating Transformers
IEEE C57.91-2011 REDLINE IEEE Guide for Loading Mineral-Oil-Immersed Transformers and Step-Voltage Regulators
IEEE C57.12.90-2010 IEEE Standard Test Code for Liquid-Immersed Distribution, Power, and Regulating Transformers
ASME B1.20.1 : 2013(R2018) PIPE THREADS, GENERAL PURPOSE (INCH)
IEEE C57.12.70-2011 IEEE Standard for Standard Terminal Markings and Connections for Distribution and Power Transformers

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