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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 Superseded Standard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 Superseded Standard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 Withdrawn Standard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 Superseded Standard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 Superseded Standard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... 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 - Approved Draft Pad-Mounted-Type, Self-Cooled, Single-Phase Distribution Transformers; High Voltage, 34 500 GrdY/19 920 V and Below, Low Voltage, 480/240 V; 250 kVA and SmallerCertain 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
C57.12.44-2005 - 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
C57.12.44-2014 - 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... Active Standard
C57.12.51-2008 - Ventilated Dry- Type Power Transformers, 501 kVA and Larger, Three-Phase, with High- Voltage 601 V to 34 500 V; Low- Voltage 208Y/120 V to 4160 V- General RequirementsCharacteristics relating to performance, limited electrical and mechanical interchangeability, as well as safety of the equipment described, and... Active Standard