Standard Icon

Power and Energy Standards

Displaying results 1121 - 1160 of 1335
Standard Name
Status Help less all
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 Withdrawn Standard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 Superseded Standard
C57.12.20-1997 - Overhead Type Distribution Transformers, 500 kVA and Smaller, High-Voltage 34 500 Volts and Below; Low-Voltage, 7970/13 800 Y Volts and BelowSuperseded by IEEE Std C57.12.20-2005 Superseded Standard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
C57.12.22-1995 - American National Pad-Mounted, Compartmental-Type, Self-Cooled, Three-Phase Distribution Transformers With High-Voltage Bushings, 2500 kVA and Smaller; High Voltage, 34 500 GrdY/19 920 Volts and Below; Low Voltage, 480 Volts and BelowThis standard is intended for use as a basis for determining performance, interchangeability, and safety of the equipment covered, and to assist... Withdrawn Standard
C57.12.23-1992 - Transformers--Underground-Type, Self-Cooled, Single-Phase Distribution Transformers with Separable, Insulated, High-Voltage Connectors; High Voltage (24 940 GrdY/14 400 V and Below) and Low-Voltage (240/120 V, 167 kVA and Smaller)In this standard electrical, dimensional, and mechanical characteristics and certain safety features of single-phase, 60 Hz, mineral-oil-immersed,... Superseded Standard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 Superseded Standard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
C57.12.24-1994 - Requirements for Transformers-- Underground-Type, Three-Phase Distribution Transformers: High Voltage (34 500 GrdY/19 920 V and Below) and Low Voltage (480 V and Below, 2500 kVA and Smaller)C57_12_24_bk1.front Withdrawn 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
C57.12.26-1992 - Pad-Mounted, Compartmental-Type, Self-Cooled, Three-Phase Distribution Transformers for Use with Separable Insulated High-Voltage Connectors (34 500 GrdY/19 920 Volts and Below, 2500 kVA and Smaller)This standard is intended for use as a basis for determining performance, interchangeability, and safety of the equipment covered, and for... Withdrawn 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
C57.12.34-2009 - Standard Requirements for Pad-Mounted, Compartmental-Type, Self-Cooled, Three-Phase Distribution Transformers, 5 MVA and Smaller; High Voltage, 34.5 kV Nominal System Voltage and Below; Low Voltage, 15 kV Nominal System Voltage & BelowCertain electrical, dimensional, and mechanical characteristics are set forth as well as certain safety features of three-phase, 60 Hz, mineral... Active 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... 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,... Active Standard
C57.12.40-1993 - Requirements for Secondary Network Transformers - Subway and Vault Types (Liquid Immersed) Superseded 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... 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
C57.12.52-2012 - Sealed Dry-Type Power Transformers, 501 kVA and Higher, Three-Phase, with High-Voltage 601 to 34500 Volts, Low-Voltage 208Y/120 to 4160 Volts—General RequirementsCharacteristics relating to performance, limited electrical and mechanical interchangeability, and guidance to assist in the proper selection of... Active Standard
C57.12.56-1986 - Standard Test Procedure for Thermal Evaluation of Insulation Systems for Ventilated Dry-Type Power and Distribution TransformersThis standard is intended to establish a uniform method for determining the temperature classification of ventilated dry-type power and... Superseded Standard
C57.12.57-1992 - Requirements for Ventilated Dry-Type Network Transformers 2 500 kVA and Below, Three-Phase with High-Voltage 34 500 Volts and Below, Low Voltage 216Y/125 and 480Y/125 Volts Withdrawn Standard
C57.12.58-1991 - Guide for Conducting a Transient Voltage Analysis of a Dry-Type Transformer CoilGeneral recommendations for measuring voltage transients in dry-type distribution and power transformers are provided. Recurrent surge voltage... Active Standard
C57.12.59-2001 - Guide for Dry-Type Transformer Through-Fault Current DurationThis guide sets forth recommendations believed essential for the application of overcurrent protective devices that limit the exposure time of dry... Active Standard
C57.12.59-1989 - Guide for Dry-Type Transformer Through-Fault Current DurationProtective devices, such as relays and fuses, have well-defined operating characteristics that relate fault magnitude to operating time. It is... Withdrawn Standard
C57.12.60-1992 - Trial-Use Standard Test Procedures for Thermal Evaluation of Insulation Systems for Solid-Cast and Resin-Encapsulated Power and Distribution TransformersThis standard provides a uniform method for determining the temperature classification of solid cast and resin encapsulated power and distribution... Superseded Standard
C57.12.60-1998 - Guide for Test Procedures for Thermal Evaluation of Insulation Systems for Solid Cast and Resin-Encapsulated Power and Distribution TransformersA uniform method is established for determining the temperature classification of solid-cast and resin-encapsulated power and distribution... Superseded Standard
C57.12.60-2009 - Standard Test Procedure for Thermal Evaluation of Insulation Systems for Dry-Type Power and Distribution Transformers, Including Open-Wound, Solid-Cast, and Resin-Encapsulated TransformersA uniform method is established for determining the temperature classification for the insulation systems for open-wound, solid-cast and resin... Active Standard
Displaying results 1121 - 1160 of 1335 - all results
« 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 »