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Power and Energy Standards

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C57.12.10-2010/Cor 2-2013 - Standard Requirements for Liquid-Immersed Power Transformers -- Corrigendum 2: Correction of A.3.2.13 Autotransformer LTC application considerationsRequirements for power transformer application are set forth in this standard. It is intended to be used as a basis for performance,... Active Standard
C57.12.11-1980 - Guide for Installation of Oil-Immersed Transformers (10 MVA and Larger, 69-287 kV Rating)Increasing application of large capacity high-voltage transformers with reduced insulation has brought forth the parallel need for increasing care... Superseded Standard
C57.12.12-1980 - Guide for Installation of Oil-Immersed EHV Transformers 345 kV and AboveThe higher dielectric stresses required for extra-high-voltage (EHV) transformers, combined with thermal problems arising from their usually... Superseded Standard
C57.12.14-1982 - Trial-Use Dielectric Test Requirements for Power Transformers for Operation at System Voltages from 115 kV Through 230 kVThis standard prescribes insulation levels and dielectric test requirements for power transformers where: (1) The transformer insulation levels... Withdrawn Standard
C57.12.20-1997 - American National Transformers - Standard for Overhead Type Distribution Transformers, 500 kVA and Smaller: High Voltage 34500 Volts and Below: Low Voltage, 7970/13800Y Volts and BelowSuperseded by IEEE Std C57.12.20-2005.This standard covers certain electrical, dimensional, and mechanical characteristics and takes into... Superseded Standard
C57.12.20-2005 - Overhead Type Distribution Transformers, 500 kVA and Smaller: High Voltage, 34500 Volts and Below; Low Voltage, 7970/13800Y Volts and BelowThis standard covers certain electrical, dimensional, and mechanical characteristics and safety features of singleand three-phase, 60 Hz, mineral... Superseded Standard
C57.12.20-2011 - Overhead-Type Distribution Transformers 500 kVA and Smaller: High Voltage, 34 500 V and Below; Low Voltage, 7970/13 800Y V and BelowCertain electrical, dimensional, and mechanical characteristics and safety features of single- and three-phase, 60 Hz, mineral-oil-immersed, self... Active Standard
C57.12.23-2002 - Underground Type, Self-Cooled, Single-Phase, Distribution Transformers with Separable Insulated High-Voltage Connectors; High Voltage 25000 V and Below; Low Voltage 600 V and Below; 167 kVA and SmallerElectrical, dimensional, and mechanical characteristics and certain safety features of single-phase, 60 Hz, mineral-oil-immersed, self-cooled,... Superseded Standard
C57.12.23-2009 - Submersible Single-Phase Transformers: 167 kVA and Smaller; High Voltage 25 000 V and Below; Low Voltage 600 V and BelowElectrical, dimensional, and mechanical characteristics and certain safety features of single-phase, 60 Hz, liquid-immersed, self-cooled,... Active Standard
C57.12.24-2009 - Submersible, Three-Phase Transformers, 3750 kVA and Smaller: High Voltage, 34 500 GrdY/19 920 Volts and Below; Low Voltage, 600 Volts and BelowThis standard is intended for use as a basis for establishing the performance, electrical and mechanical interchangeability, and safety of the... Active Standard
C57.12.28-2005 - Pad-Mounted Equipment - Enclosure IntegrityConformance tests and requirements for the integrity of above-grade pad-mounted enclosures that contain apparatus energized in excess of 600 V and... Superseded Standard
C57.12.28-2014 - Pad-Mounted Equipment--Enclosure IntegrityConformance tests and requirements for the integrity of above grade pad-mounted enclosures that contain apparatus energized in excess of 600 volts... Active Standard
C57.12.29-2005 - Pad Mounted Equipment - Enclosure Integrity for Coastal EnvironmentsCovered in this standard are conformance tests and requirements for the integrity of above-grade pad-mounted enclosures for application in coastal... Superseded Standard
C57.12.29-2014 - Pad-Mounted Equipment--Enclosure Integrity for Coastal EnvironmentsConformance tests and requirements for the integrity of above-grade pad-mounted enclosures for application in coastal environments that contain... Active Standard
C57.12.30-2010 - Pole-Mounted Equipment--Enclosure Integrity for Coastal EnvironmentsConformance tests and requirements for the coating integrity of pole-mounted enclosures for application in coastal environments containing... Active Standard
C57.12.31-2002 - Pole Mounted Equipment - Enclosure IntegrityConformance tests and requirements for the coating integrity of carbon steel pole mounted enclosures containing apparatus energized in excess of... Superseded Standard
C57.12.31-2010 - Pole-Mounted Equipment--Enclosure IntegrityConformance tests and requirements for the coating integrity of carbon steel polemounted enclosures containing apparatus energized in excess of... Active Standard
C57.12.31-2010/Cor 1-2014 - Pole-Mounted Equipment--Enclosure Integrity - Corrigendum 1: Correction to the SCAB Corrosion Test in 4.5.6An error has been identified in the 2010 published version of IEEE Std C57.12.31(TM)-2010. The number of cycles included in one of the corrosion... Active Standard
C57.12.32-2002 - Submersible Equipment - Enclosure IntegrityEvaluation and testing of the coating integrity of carbon steel and copper bearing steel enclosures used with submersible electrical equipment are... Active Standard
C57.12.34-2004 - Requirements for Pad-Mounted, Compartmental-Type, Self-Cooled, Three-Phase DistributionTransformers, 2500 kVA and Smaller: High-Voltage, 34 500GrdY/19 920 Volts and Below; Low Voltage, 480 Volts and BelowCertain electrical, dimensional, and mechanical characteristics are set forth as well as certain safety features of three-phase, 60 Hz, mineral... Superseded Standard
C57.12.35-1996 - Bar Coding for Distribution TransformersBar code label requirements for overhead, pad-mounted, and underground-type distribution transformers are set forth in this standard. Included... Superseded Standard
C57.12.35-2007 - Bar Coding for Distribution Transformers and Step-Voltage RegulatorsThis IEEE standard for bar code label requirements for specific types of distribution transformers and step-voltage regulators. Data content for... Superseded Standard
C57.12.35-2013 - Standard Bar Coding for Distribution Transformers and Step-Voltage RegulatorsBar code label requirements for specific types of distribution transformers and step-voltage regulators are covered in this standard. Data content... Active Standard
C57.12.36-2007 - Standard Requirements for Liquid-Immersed Distribution Substation TransformersSmall power transformers have become a significant element in distribution systems supplying large commercial customers like major resort hotels... Active Standard
C57.12.37-2006 - the Electronic Reporting of Distribution Transformer Test DataThis standard provides a basis for the electronic reporting of transformer test data on liquid immersed distribution transformers as defined in... Superseded Standard
C57.12.37-2015 - the Electronic Reporting of Distribution Transformer Test DataA basis for the electronic reporting of transformer test data on liquid immersed distribution transformers, as defined in the IEEE C57.12.2X, C57... Active Standard
C57.12.38-2009 - Pad-Mounted-Type, Self-Cooled, Single-Phase Distribution Transformers; High Voltage, 34 500 GrdY/19 920 V and Below, Low Voltage, 240/120 V; 167 kVA and SmallerThis standard covers certain electrical, dimensional, mechanical characteristics and safety requirements of single-phase, 60 Hz, liquid-filled,... Superseded Standard
C57.12.38-2014 - Pad-Mounted-Type, Self-Cooled, Single-Phase Distribution Transformers 250 kVA and Smaller: High Voltage, 34 500 GrdY/19 920 V and Below; Low Voltage, 480/240 V and BelowCertain electrical, dimensional, and mechanical characteristics are covered in this standard, and certain safety features of single-phase, 60-Hz,... Active Standard
C57.12.40-2006 - Requirements for Secondary Network Transformers, Subway and Vault Types (Liquid-Immersed)This standard is intended for use as a basis for establishing the performance, interchangeability, and safety of the equipment covered and to... Active Standard
C57.12.40-2011 - Network, Three-Phase Transformers, 2500 kVA and Smaller; High Voltage, 34 500 GrdY/19 920 and Below; Low Voltage, 600 V and Below; Subway and Vault Types (Liquid Immersed)This standard is intended for use as a basis for establishing the performance, interchangeability, and safety of the equipment covered and to... Active Standard
C57.12.44-1994 - Standard Requirements for Secondary Network ProtectorsThe performance, electrical and mechanical interchangeability as well as the safety of the equipment are covered in this IEEE standard. The proper... Superseded Standard
C57.12.44-2000 - Standard Requirements for Secondary Network ProtectorsThe performance, electrical and mechanical interchangeability, and the safety of the equipment are covered. The proper selection of such equipment... Superseded Standard