NEMA ST 20:2014
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
View Superseded by
Dry Type Transformers for General Applications
29-03-2023
06-12-2022
Foreword
Scope
Section 1 - REFERENCED STANDARDS AND DEFINITIONS
Section 2 - RATING STANDARDS
Section 3 - DESIGN AND MARKING
Section 4 - TESTING
Section 5 - APPLICATION
Section 6 - INSTALLATION
Section 7 - MAINTENANCE
Appendix A - LOADING
Appendix B - UNITED STATES EFFICIENCY REGULATIONS
Applies to single-phase and polyphase dry type transformers (including both autotransformers and noncurrent limiting reactors) for supplying energy to power, heating, and lighting circuits.
| DocumentType |
Standard
|
| PublisherName |
National Electrical Manufacturers Association
|
| Status |
Superseded
|
| SupersededBy |
| IEEE 241 : 1990 | ELECTRIC POWER SYSTEMS IN COMMERCIAL BUILDINGS |
| UFC 3-520-01 : 2015 | UNIFIED FACILITIES CRITERIA - INTERIOR ELECTRICAL SYSTEMS |
| MIL P 29183 : B | PANELBOARD, POWER DISTRIBUTION PORTABLE WEATHERPROOF, GENERAL SPECIFICATION FOR |
| ASHRAE 90.4 : 2016 | ENERGY STANDARD FOR DATA CENTERS |
| MIL-DTL-29183 Revision C:2003 | PANELBOARDS, POWER DISTRIBUTION, PORTABLE, WEATHERPROOF, GENERAL SPECIFICATION FOR |
| CSA C22.2 No. 47 : 2013 | AIR-COOLED TRANSFORMERS (DRY TYPE) |
| NEMA TP 2-2005 | STANDARD TEST METHOD FOR MEASURING THE ENERGY CONSUMPTION OF DISTRIBUTION TRANSFORMERS |
| NEMA TR1 : 2013 | TRANSFORMERS, STEP VOLTAGE REGULATORS AND REACTORS |
| PIP ELSMC14 : 2013 | LOW-VOLTAGE SWITCH RACK SPECIFICATION |
| IEEE C57.110-2008 REDLINE | IEEE Recommended Practice for Establishing Liquid-Filled and Dry-Type Power and Distribution Transformer Capability When Supplying Nonsinusoidal Load Currents |
| PIP ELSMC14 : 2019 | LOW-VOLTAGE SWITCH RACK SPECIFICATION |
| IEEE C37.302-2015 | IEEE Guide for Fault Current Limiter (FCL) Testing of FCLs Rated above 1000 V AC |
| NEMA TP 1-2002 | GUIDE FOR DETERMINING ENERGY EFFICIENCY FOR DISTRIBUTION TRANSFORMERS |
| IEEE C57.12.01-2015 REDLINE | IEEE Standard for General Requirements for Dry-Type Distribution and Power Transformers |
| ANSI S1.4 : 1983 | SPECIFICATION FOR SOUND LEVEL METERS |
| NEMA 250 : 2014 | ENCLOSURES FOR ELECTRICAL EQUIPMENT (1000 VOLTS MAXIMUM) |
| IEEE C57.96-2013 | IEEE Guide for Loading Dry-Type Distribution and Power Transformers |
| IEEE 4-2013 | IEEE Standard for High-Voltage Testing Techniques |
| IEEE C2-2017 | NATIONAL ELECTRICAL SAFETY CODE (NESC)(R) |
| IEEE 142 : 2007 | GROUNDING OF INDUSTRIAL AND COMMERCIAL POWER SYSTEMS |
| NFPA 70 : 2017 | NATIONAL ELECTRICAL CODE |
| CFR 10(PTS400-499) : JAN 96 | ENERGY |
| IEEE C57.12.70-2011 | IEEE Standard for Standard Terminal Markings and Connections for Distribution and Power Transformers |
| IEEE C57.12.91-2011 | IEEE Standard Test Code for Dry-Type Distribution and Power Transformers |
| IEEE C57.94-1982 | IEEE Recommended Practice for Installation, Application, Operation, and Maintenance of Dry-Type General Purpose Distribution and Power Transformers |
| NEMA TP 2-2005 | STANDARD TEST METHOD FOR MEASURING THE ENERGY CONSUMPTION OF DISTRIBUTION TRANSFORMERS |
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