• There are no items in your cart

ANSI C57.12.40 : 2011

Superseded
Superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

View Superseded by
superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

AMERICAN NATIONAL STANDARD FOR SECONDARY NETWORK TRANSFORMERS - SUBWAY AND VAULT TYPES (LIQUID IMMERSED) - REQUIREMENTS
Available format(s)

Hardcopy , PDF

Superseded date

09-15-2006

Language(s)

English

Published date

01-01-2011

Foreword
1 Scope
2 Referenced and related American National Standards
   2.1 Referenced American National Standards
   2.2 Related American National Standards
3 Transformer performance requirements
   3.1 Kilovolt-ampere ratings
   3.2 Voltage ratings 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

Gives certain electrical, dimensional, and mechanical characteristics and takes into consideration certain safety features of three-phase, 60Hz, liquid-immersed, secondary network transformers with a three position grounding switch, subway and vault types, rated 2500 KVA and smaller; primary 34400 volts and below; secondary 216Y/125 volts and 480Y/277 volts.

DocumentType
Standard
Pages
34
PublisherName
Institute of Electrical & Electronics Engineers
Status
Superseded
SupersededBy
Supersedes

IEEE DRAFT C57.12.44 : D2.1 2005 REQUIREMENTS FOR SECONDARY NETWORK PROTECTORS
ANSI C57.12.57 : 1987 AMERICAN NATIONAL STANDARD FOR TRANSFORMERS - VENTILATED DRY-TYPE NETWORK TRANSFORMERS 2500 KVA AND BELOW, THREE-PHASE, WITH HIGH-VOLTAGE 34500 VOLTS AND BELOW, LOW-VOLTAGE 216Y/125 AND 480Y/227 VOLTS - REQUIREMENTS
IEEE C57.12.32-2002 IEEE Standard for Submersible Equipment - Enclosure Integrity
IEEE 241 : 1990 ELECTRIC POWER SYSTEMS IN COMMERCIAL BUILDINGS
IEEE DRAFT C57.12.90 : D5.1 98 DRAFT STANDARD TEST CODE FOR LIQUID-IMMERSED DISTRIBUTION, POWER, AND REGULATING TRANSFORMERS
IEEE C37.121-2012 REDLINE IEEE Guide for Switchgear - Unit Substation - Requirements

IEEE C57.12.32-2002 IEEE Standard for Submersible Equipment - Enclosure Integrity
IEEE 386-2016 REDLINE 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
ANSI B2.1 : LATEST PIPE THREADS (EXCEPT DRYSEAL)
IEEE C57.12.70-2011 IEEE Standard for Standard Terminal Markings and Connections for Distribution and Power Transformers

View more information

Access your standards online with a subscription

Features

  • Simple online access to standards, technical information and regulations.

  • Critical updates of standards and customisable alerts and notifications.

  • Multi-user online standards collection: secure, flexible and cost effective.