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IEEE - ANSI C57.98 - GUIDE FOR TRANSFORMER IMPULSE TESTS (APPENDIX TO ANSI/IEEE C57.12.90-1980) (R 1992) Organization: IEEE
Date: 1986-01-01
NEMA - C12.18 - PROTOCOL SPECIFICATION FOR ANSI TYPE 2 OPTICAL PORT Organization: NEMA
Date: 2006-05-02
Description: NEMA Smart Meter Package also establishes performance criteria for thermal demand meters, mechanical demand registers and phase shifting devices used in metering. Test methods for transformer-rated meters and self contained "A" base watt hour meter are included in this package as well as a watt hour safety standard.
NEMA TR 1 - TRANSFORMERS, STEP VOLTAGE REGULATORS AND REACTORS Organization: NEMA
Date: 2013-01-01
Description: This standards publication applies to single phase and poly phase power and distribution transformers (including step-voltage regulators and reactors).
IEEE C57.13.6 - STANDARD FOR HIGH-ACCURACY INSTRUMENT TRANSFORMERS Organization: IEEE
Date: 2005-09-22
Description: This test point corresponds with the light load test point of transformer rated electromechanical and solid state electricity meters as specified in ANSI C12.20.
CSA C22.2 NO 66.1 - LOW VOLTAGE TRANSFORMERS - PART 1: GENERAL REQUIREMENTS - FIRST EDITION; UPDATE NO. 1: NOVEMBER 2012; UPDATE NO. 2: DECEMBER 2013 Organization: CSA
Date: 2006-01-01
Description: Preface This is the harmonized CSA Group and UL standard for low voltage transformers. It is the first edition of CSA C22.2 No. 66.1 and the first edition of UL 5085-1.
CSA C22.2 NO 66.3 - LOW VOLTAGE TRANSFORMERS - PART 3: CLASS 2 AND CLASS 3 TRANSFORMERS - FIRST EDITION; UPDATE NO. 1: NOVEMBER 2012 Organization: CSA
Date: 2006-04-17
Description: As noted in Low Voltage Transformers – Part 1: General Requirements, UL 5085-1, or CSA C22.2 No. 66.1, Low Voltage Transformers – Part 1: General Requirements, the requirements in Part 3 cover Class 2 transformers for use with Class 2 circuits in accordance with the National Electrical Code, ANSI/NFPA 70, or the Canadian Electrical Code, Part I, CSA C22.1.
UL 5085-3 - UL STANDARD FOR SAFETY LOW VOLTAGE TRANSFORMERS – PART 3: CLASS 2 AND CLASS 3 TRANSFORMERS - FIRST EDITION; REPRINT WITH REVISIONS THROUGH AND INCLUDING NOVEMBER 30, 2012 Organization: UL
Date: 2006-04-17
Description: As noted in Low Voltage Transformers – Part 1: General Requirements, UL 5085-1, or CSA C22.2 No. 66.1, Low Voltage Transformers – Part 1: General Requirements, the requirements in Part 3 cover Class 2 transformers for use with Class 2 circuits in accordance with the National Electrical Code, ANSI/NFPA 70, or the Canadian Electrical Code, Part I, CSA C22.1.
ANSI - C57.12.70 - TERMINAL MARKINGS AND CONNECTIONS FOR DISTRIBUTION AND POWER TRANSFORMERS Organization: ANSI
Date: 1978-01-01
Description: This standard does not describe terminal markings and connections of rectifier transformers; these are de- scribed in American National Standard Requirements, Terminology, and Test Code for Pool-Cathode Mercury-Arc Rectifier Transformers, ANSI C57.18-1964 (R1971).
NEMA - ANSI C57.12.70 - TERMINAL MARKINGS AND CONNECTIONS FOR DISTRIBUTION AND POWER TRANSFORMERS - NOW COPYRIGHTED BY IEEE Organization: NEMA
Date: 1978-01-01
Description: This standard does not describe terminal markings and connections of rectifier transformers; these are described in American National Standard Requirements, Terminology, and Test Code for Pool-Cathode Mercury-Arc Rectifier Transformers, ANSI C57.18-1964 (R1971). 
IEEE 1388 - STANDARD FOR THE ELECTRONIC REPORTING OF TRANSFORMER TEST DATA Organization: IEEE
Date: 2000-12-07
Description: This standard provides a basis for electronic reporting of transformer test data on liquid immersed distribution transformers, specifically, those defined in the ANSI C57.12.2X standards series.
UL 2808 OUTLINE - OUTLINE OF INVESTIGATION FOR ENERGY MONITORING CURRENT TRANSFORMERS - ISSUE 3 Organization: UL
Date: 2016-06-10
Description: These requirements also cover ²Service Entrance² enclosed-type current transformers intended for outdoor use.  These current transformers are rated to measure current in a maximum 250 Vac, 600 Vac, or 1000 Vac line-to-line circuits or in a maximum 1500 Vdc circuit.
NECA NEIS 410 - STANDARD FOR INSTALLING AND MAINTAINING LIQUID-FILLED TRANSFORMERS Organization: NECA
Date: 2013-01-01
Description: Autotransformers 4. Cast coil transformers 5. Arc furnace transformers 6. Rectifier transformers 7. Network transformers 8.
IEEE - ANSI C57.12.55 - TRANSFORMERS USED IN UNIT INSTALLATIONS, INCLUDING UNIT SUBSTATIONSCONFORMANCE STANDARD - REPLACES NEMA C57.12.55-1987 Organization: IEEE
Date: 1987-01-01
Description: This document refers to the proposed revision of American National Standard for Dry-Type Transformers, ANSI/IEEE C57.12.01-1979 (now in preparation).
NECA NEIS 409 - STANDARD FOR INSTALLING AND MAINTAINING DRY-TYPE TRANSFORMERS Organization: NECA
Date: 2015-01-01
Description: Control transformers and transformers used with Class 2 and Class 3 circuits. Dry-type transformers that constitute a component part of other apparatus and comply with the requirements for such apparatus, including an X-ray, high-frequency, or electrostatic-coating apparatus.
UL 1562 - UL STANDARD FOR SAFETY TRANSFORMERS, DISTRIBUTION, DRY-TYPE - OVER 600 VOLTS - FOURTH EDITION; REPRINT WITH REVISIONS THROUGH AND INCLUDING OCTOBER 22, 2015 Organization: UL
Date: 2013-01-25
Description: These transformers are intended for installation in accordance with the National Electrical Code, ANSI/NFPA 70. These requirements do not cover the following transformers: a) Instrument transformers b) Step-voltage and induction voltage regulators c) Current regulators d) Arc furnace transformers e) Rectifier transformers f) Specialty transformers (such as rectifier, ignition, gas tube sign transformers, and the like) g) Mining transformers h) Motor-starting reactors and transformers These requirements do not cover transformers under the exclusive control of electrical utilities utilized for communication, metering, generation, control, transformation, transmission, and distribution of electric energy regardless of whether such transformers are located indoors, in buildings and rooms used exclusively by utilities for such purposes; or outdoors on property owned, leased, established rights on private property or on public rights of way (highways, streets, roads, and the like).
ANSI - ANSI C57.12.13 - CONFORMANCE REQUIREMENTS FOR LIQUID-FILLED TRANSFORMERS USED IN UNIT INSTALLATIONS, INCLUDING UNIT SUBSTATIONS Organization: ANSI
Date: 1982-01-01
Description: This standard does not cover the following types of liquid-filled transformers: (1)Overhead-type distribution transformers, including those mounted in surface enclosures (2)Pad-mounted compartmental-type transformers as described and defined in the following standards: American National Standard Requirements for Pad-Mounted Compartmental-Type Self-Cooled Single-Phase Distribution Transformers with High-Voltage Bushings (High-Voltage, 34 500 GrdY/19 920 Volts and Below; Low-Voltage, 240/120; 167 kVA and Smaller), ANSI C57.12.21-1980 American National Standard Requirements for Pad-Mounted Compartmental-Type Self-Cooled Three-Phase Distribution Transformers with High-Voltage Bushing (34 500 GrdY/19 920 Volts and Below; 2500 kVA and Smaller), ANSI C57.12.22-1980 American National Standard Requirements for Pad-Mounted Compartmental-Type Self-Cooled Single-Phase Distribution Transformers with Separable Insulated High-Voltage Connectors, High-Voltage 34 500 GrdY/19 920 Volts and Below; Low-Voltage, 240/120; 167 kVA and Smaller, ANSI C57.12.25-1981 American National Standard Requirements for Pad-Mounted Compartmental-type Self-Cooled Three-Phase Distribution Transformers for Use with Separable Insulated High-Voltage Connectors, High-Voltage, 24 940 GrdY/14 400 Volts and Below; 2500 kVA and Smaller, ANSI C57.12.26-1975 (3) Subsurface or submersible-type transformers as described and defined in the following standards: American National Standard requirements for Underground-Type Single-Phase Distribution Transformers, with Separable Insulated High-Voltage Connectors, High Voltage 24 940 GrdY/14 400 Volts and Below, Low Voltage 240/120, 100 kVA and Smaller, ANSI C57.12.23-1978 American National Standard Requirements for Underground-Type Three-Phase Distribution Transformers, 2500 kVA and Smaller; High Voltage 24 940 GrdY/14 400 Volts and Below; Low Voltage 480 Volts and Below, ANSI C57.12.24-1982 American National Standard Requirements for Secondary Network Tranformers, Subway and Vault Types (Liquid Immersed), ANSI C57.12.40-1982 (4) Rectifier transformers (5) Mobile transformers (6) All transformers for use in ships and other watercraft, railway rolling stock, aircraft, and automotive vehicles other than mobile home and recreational vehicles (7) Transformers used in mines (8) Transformers installed in railways for the generation, transformation, transmission, or distribution of power and used exclusively for operation of rolling stock, or transformers installed in railways and used exclusively for signaling, or communication purposes (9) Instrument transformers (10) Step-voltage regualors and induction voltage regulators (11) Arc furnace transformers (12) Transformers installed with communication equipment under the exclusive control of communication utilities, located outdoors or in building spaces used exclusively for such installations (13) Transformers that are used under the exclusive control of electric utilities for the purpose of communication or metering, or for the generation, control, transformation, transmission, and distribution of electric energy and that are located in buildings used exclusively for such purposes or located outdoors on property owned or leased by the utility, or on public highways, streets, roads, etc, or by established rights on private property
IEEE C57.94 - RECOMMENDED PRACTICE FOR INSTALLATION, APPLICATION, OPERATION, AND MAINTENANCE OF DRY-TYPE DISTRIBUTION AND POWER TRANSFORMERS Organization: IEEE
Date: 2015-12-05
Description: This recommended practice covers general recommendations for the application, installation, operation, and maintenance of all single and polyphase ventilated, non-ventilated, and sealed dry-type distribution and power transformers or autotransformers, including those with solid-cast and/or resin encapsulated windings except as follows: a) Instrument transformers b) Step- and induction-voltage regulators c) Arc-furnace transformers d) Rectifier transformers e) Specialty and general purpose transformers f) Mine transformers g) Testing transformers h) Welding transformers Purpose The recommended practice is intended for general use in the application, installation, operation, and maintenance of dry-type transformers manufactured in accordance with IEEE Std C57.12.01, ANSI C57.12.50 [B1], ANSI C57.12.51 [B2], and ANSI C57.12.52 [B3].
UL 1561 - UL STANDARD FOR SAFETY DRY-TYPE GENERAL PURPOSE AND POWER TRANSFORMERS - FOURTH EDITION; REPRINT WITH REVISIONS THROUGH AND INCLUDING JUNE 16, 2015 Organization: UL
Date: 2011-03-02
Description:   These requirements do not cover ballasts for high intensity discharge (HID) lamps (metal halide, mercury vapor, and sodium types) or fluorescent lamps, exposed core transformers, compound-filled transformers, liquid-filled transformers, voltage regulators, general use or special types of transformers covered in requirements for other electrical equipment, autotransformers forming part of industrial control equipment, motor-starting autotransformers, variable voltage autotransformers, transformers having a nominal primary or secondary rating of more than 600 volts, or overvoltage taps rated greater than 660 volts.
IEEE - ANSI C57.12.12 - GUIDE FOR INSTALLATION OF OIL-IMMERSED EHV TRANSFORMERS 345 KV AND ABOVE - SUPPLEMENT TO ANSI/IEEE C57.12.11-1980 Organization: IEEE
Date: 1980-01-01
Description: This guide is a supplement to ANSI/IEEE C57.12.11- 1980, Guide for Installation of Oil-Immersed Transformers [ l ] ,1 which is basic to transformer installation procedures.
FAA-E-2791 - TRANSFORMER, DISTRIBUTION, PAD-MOUNTED, FOR LOOPED POWER DISTRIBUTION SYSTEMS WITH HIGH VOLTAGE AT 25KV AND BELOW Organization: FAA
Date: 1989-08-28
Description: This specification covers oil-filled, pad-mounted, compartmental-type transformers designed in general to comply with the requirements of ANSI standards C57.12.00, C57.12.25 and C57.12.26.

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