A test procedure is established to provide a uniform method for investigating the effect of operating temperature on the life expectancy of liquid-immersed transformers. The test procedures are intended to provide data for the selection of a limiting hottest-spot temperature for rating purposes, provide data which may serve as the basis for a guide for loading, and permit the comparative evaluation of a proposed insulation system with reference to a system that has proven to be acceptable in service.
- Standard Committee
- PE/TR - Transformers
- Status
- Superseded Standard
- Superseded by
- C57.100-2011
- Superseding
- C57.100-1986
- Board Approval
- 1999-06-26
- History
-
- ANSI Approved:
- 2000-01-20
- Published:
- 1999-10-07
Working Group Details
- Society
- IEEE Power and Energy Society
- Standard Committee
- PE/TR - Transformers
- Working Group
-
WGC57.100 - Insulation Life - Thermal Eval. of Dist. Xfrmrs Working Group
- IEEE Program Manager
- Patrycja Jarosz
Contact Patrycja Jarosz - Working Group Chair
- Roger Wicks
Other Activities From This Working Group
Current projects that have been authorized by the IEEE SA Standards Board to develop a standard.
No Active Projects
Standards approved by the IEEE SA Standards Board that are within the 10-year lifecycle.
C57.100-2022
IEEE Standard for Test Procedure for Thermal Evaluation of Insulation Systems for Liquid-Immersed Distribution, Power, and Regulating Transformers
A series of test procedures to provide uniform methods for investigating the effects of operating temperature on the life expectancy of liquid-immersed transformers or insulation systems is provided. The test procedures are intended to provide data for the selection of a limiting hottest-spot temperature for rating purposes, provide data which may serve as the basis for a guide for loading, and permit the comparative evaluation of a proposed insulation system with reference to a system that has proven to be acceptable in service.
These standards have been replaced with a revised version of the standard, or by a compilation of the original active standard and all its existing amendments, corrigenda, and errata.
C57.100-1986
IEEE Standard Test Procedure for Thermal Evaluation of Oil-Immersed Distribution Transformers
The object of this test procedure is to establish a uniform method for investigating the effect of operating temperature on the life expectancy of oil-immersed distribution transformers. It is intended to give a direct evaluation of the composite insulation system of an oil-immersed distribution transformer, tested as an integral unit. It is to be noted that the oil in which the transformer is immersed is to be considered a part of the insulation system. It is the intent of the procedure to provide that each component of the insulation structure operate during the test under conditions that are, as nearly as possible, the same as those that it would encounter in service. Thus, it is intended that each component be evaluated in accordance with its actual function.
These standards have been removed from active status through a ballot where the standard is made inactive as a consensus decision of a balloting group.
No Inactive-Withdrawn Standards
These standards are removed from active status through an administrative process for standards that have not undergone a revision process within 10 years.
C57.100-2011
IEEE Standard Test Procedure for Thermal Evaluation of Insulation Systems for Liquid-Immersed Distribution and Power Transformers
A test procedure to provide a uniform method for investigating the effect of operating temperature on the life expectancy of liquid-immersed transformers is provided. The test procedures are intended to provide data for the selection of a limiting hottest-spot temperature for rating purposes, provide data which may serve as the basis for a guide for loading, and permit the comparative evaluation of a proposed insulation system with reference to a system that has proven to be acceptable in service.