IMPORTANT NOTICE: This standard is not intended to ensure safety, security, health, or
environmental protection. Implementers of the standard are responsible for determining appropriate
safety, security, environmental, and health practices or regulatory requirements.
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This standard describes electrical and mechanical requirements of liquid-immersed distribution and power
transformers, and autotransformers and regulating transformers, single-phase and polyphase, with voltages
of 601 V or higher in the highest voltage winding.
This standard applies to all liquid-immersed distribution, power, and regulating transformers that do not
belong to the following types of apparatus:
a) Instrument transformers
b) Step voltage and induction voltage regulators
c) Arc furnace transformers
d) Rectifier transformers
e) Specialty transformers
f) Grounding transformers
g) Mobile transformers
h) Mine transformers
IEEE Std C57.12.00-2010 Referenced Document
ANSI C84.1 American National Standard for Electric Power Systems and Equipment -- Voltage Ratings (60 Hz)*, 2020-03-10 Update
ASTM D1933 Standard Specification for Nitrogen Gas as an Electrical Insulating Material
ASTM D2225 Standard Test Methods for Silicone Fluids Used for Electrical Insulation
ASTM D3487 Standard Specification for Mineral Insulating Oil Used in Electrical Apparatus
ASTM D5222 Standard Specification for Less Flammable High Molecular Weight Hydrocarbon Mineral Electrical Insulating Liquids*, 2023-01-01 Update
ASTM D92 Standard Test Method for Flash and Fire Points by Cleveland Open Cup
CGA V-1 STANDARD FOR COMPRESSED GAS CYLINDER VALVE OUTLET AND INLET CONNECTIONS*, 2023-01-01 Update
IEEE Std 315 IEEE Standard American National Standard Canadian Standard Graphic Symbols for Electrical and Electronics Diagrams (Including Reference Designation Letters)
IEEE Std 469 IEEE Recommended Practice for Voice-Frequency Electrical-Noise Tests of Distribution Transformers
IEEE Std C57.12.70 Standard Terminal Markings and Connections for Distribution and Power Transformers
IEEE Std C57.12.80 Terminology for Power and Distribution Transformers*, 2024-04-19 Update
IEEE Std C57.12.90 IEEE Standard Test Code for Liquid-Immersed Distribution, Power, and Regulating Transformers*, 2022-02-04 Update
IEEE Std C57.131 IEEE Standard Requirements for Tap Changers*, 2024-04-19 Update
IEEE Std C57.19.01 IEEE Standard for Performance Characteristics and Dimensions for Power Transformer and Reactor Bushings*, 2018-07-12 Update
IEEE Std C57.12.00-2010 history
2022IEEE Std C57.12.00-2021 IEEE Standard for General Requirements for Liquid-Immersed Distribution, Power, and Regulating Transformers
2015IEEE Std C57.12.00-2015 General Requirements for Liquid-Immersed Distribution, Power, and Regulating Transformers
2010IEEE Std C57.12.00-2010 General requirements for liquid-immersed distribution, power, and regulating transformers
2006IEEE Std C57.12.00-2006 Standard general requirements for liquid-immersed distribution, power, and regulating transformers
2000IEEE Std C57.12.00-2000 General requirements for liquid-immersed distribution, power, and regulating transformers
1993IEEE Std C57.12.00-1993 General requirements for liquid-immersed distribution, power, and regulating transformers
1970IEEE Std C57.12.00-1987 IEEE Standard General Requirements for Liquid-Immersed Distribution, Power, and Regulating Transformers
1980IEEE C57.12.00-1980 General Requirements for Liquid-Immersed Distribution@ Power@ and Regulating Transformers
1973IEEE C57.12.00-1973 General Requirements for Distribution@ Power@ and Regulating Transformers
1970IEEE Std C57.12.00-1968 USA Standard General Requirements for Distribution, Power and Regulating Transformers, and Shunt Reactors