IEEE Standards Association
IEEE Project
P117 - Standard Test Procedure for Thermal Evaluation of Systems of Insulating Materials for Random-Wound AC Electric Machinery
This is a standard test procedure for the thermal evaluation and qualification of electrical insulation systems for Random-Wound AC Electric Machinery, where thermal degradation is the dominating aging factor. This procedure compares the relative thermal performance of a candidate Electrical Insulation System (EIS) to that of a reference Electrical Insulation System. This standard covers insulation systems for such machinery with input voltage of up to 1000 Volts at 50/60 Hertz. This standard provides a statistical method for establishing a relative life-temperature relationship for an insulation system. To have any significance, the reference insulation system must be supported with adequate field service data. This procedure is intended to evaluate insulation systems for use in air-cooled, random-wound AC electric machinery with "e;usual service conditions"e;. This procedure, on its own, does not cover insulation systems such as exposure to conducting contaminates, radiation, inverter applications, or operation in oils, refrigerants, or other media that potentially degrade insulating materials.
- Status:
Sponsor: PE/EM - Electric Machinery 
Society: PE - IEEE Power and Energy Society
Get Involved In The Development Of This Standard
Contact the IEEE-SA Liaison Simply click here to voice your interest. Malia Zaman
Learn More About Standards ParticipationAnyone can participate, there are a variety of programs and services to
facilitate the involvement of industry and the public. More
Become a Member and Ballot on this StandardMembership empowers you to participate & lead in the development of
standards. Tell Me More
Standards Help
IEEE-SA Standards Development Services are proven to expedite the process by 40%. Click here to learn more!