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Power and Energy Standards

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C37.232-2007 - Recommended Practice for Naming Time Sequence Data FilesA procedure for naming time sequence data (TSD) files, such as files produced by digital fault recorders, power swing recorders, power quality... Superseded Standard
C37.233-2009 - Guide for Power System Protection TestingThis guide covers suggested test requirements for power system protection scheme testing, system application tests, the scope and level of tests... Active Standard
C37.234-2009 - Guide for Protective Relay Applications to Power System BusesConcepts of power bus protection are discussed in this guide. Consideration is given to availability and location of breakers, current... Active Standard
C37.235-2007 - Guide for the Application of Rogowski Coils Used for Protective Relaying PurposesThis guide establishes criteria and requirements for application of Rogowski coils (RCs) (air-core current sensors) used for protective relaying... Active Standard
C37.238-2011 - Standard Profile for Use of IEEE 1588 Precision Time Protocol in Power System ApplicationsA common profile for the use of Precision Time Protocol (PTP) of IEEE Std 1588-2008 in power system protection, control, automation, and data... Active Standard
C37.301-2009 - High-Voltage Switchgear (Above 1000 V) Test Techniques--Partial Discharge MeasurementsThis standard adopts IEC 60270:2000 and defines methods of measuring partial discharges that may occur in energized power switchgear apparatus, in... Active Standard
C50.12-2005 - Salient-Pole 50 Hz and 60 Hz Synchronous Generators and Generator/Motors for Hydraulic Turbine Applications Rated 5 MVA and AboveThe requirements in this standard apply to all types of 50 Hz and 60 Hz salient-pole synchronous generators and generator/motors rated 5 MVA and... Active Standard
C50.13-2005 - Cylindrical-Rotor 50 Hz and 60 Hz Synchronous Generators Rated 10 MVA and AboveThe requirements in this standard are applied to 50 Hz and 60 Hz, two-pole and fourpole, cylindrical-rotor synchronous generators driven by steam... Superseded Standard
C50.13-1977 - American National Standard Requirements for Cylindrical-Rotor Synchronous GeneratorsRequirements for 60-Hz cylindrical-rotor synchronous generators, except those covered in standard C50.14-1977, are set forth. The standard covers... Superseded Standard
C50.14-1977 - American National Standard Requirements for Combustion Gas Turbine Driven Cylindrical Rotor Synchronous GeneratorsThe requirements in this standard apply to 60 Hz open-ventilated air-cooled cylindrical rotor synchronous generators rated 10,000 kVA and above.... Active Standard
C57.12.00-2006 - Standard General Requirements for Liquid-Immersed Distribution, Power, and Regulating TransformersElectrical, mechanical, and safety requirements are set forth for liquid-immersed distribution and power transformers, and autotransformers and... Superseded Standard
C57.12.00-1987 - Standard General Requirements for Liquid-Immersed Distribution, Power, and Regulating TransformersThis standard is a basis for the establishment of performance, limited electrical and mechanical interchangeability, and safety requirements of... Superseded Standard
C57.12.00-1993 - Standard General Requirements for Liquid-Immersed Distribution, Power and Regulating TransformersElectrical, mechanical, and safety requirements are set forth for liquid-immersed distribution and power transformers, and autotransformers and... Superseded Standard
C57.12.00-2000 - Standard General Requirements for Liquid-Immersed Distribution, Power, and Regulating TransformersElectrical, mechanical, and safety requirements are set forth for liquid-immersed distri-bution and power transformers, and autotransformers and... Superseded Standard
C57.12.01-1989 - Standard General Requirements for Dry-Type Distribution and Power Transformers Including Those with Solid Cast and/or Resin-Encapsulated WindingsThis standard describes electrical, mechanical, and safety requirements of ventilated, nonventilated, and sealed dry-type distribution and power... Withdrawn Standard
C57.12.01-1998 - Standard General Requirements for Dry-Type Distribution and Power Transformers Including Those with Solid Cast and/or Resin Encapsulated WindingsElectrical, mechanical and safety requirements of ventilated, nonventilated and sealed dry-type distribution and power transformers or... Superseded Standard
C57.12.01-2005 - Standard General Requirements for Dry-Type Distribution and Power Transformers Including Those with Solid Cast and/or Resin Encapsulated WindingsElectrical, mechanical, and safety requirements of ventilated, non-ventilated, and sealed dry-type distribution and power transformers or... 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
C57.12.20-2005 - 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... 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... 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
C57.12.32-2002 - 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