ANSI C57.12.40 : 2011
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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AMERICAN NATIONAL STANDARD FOR SECONDARY NETWORK TRANSFORMERS - SUBWAY AND VAULT TYPES (LIQUID IMMERSED) - REQUIREMENTS
Hardcopy , PDF
15-09-2006
English
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Superseded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 | 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 |
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