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IEEE 1 Document Information:
Title
General Principles for Temperature Limits in the Rating of Electrical Equipment and for the Evaluation of Electrical Insulation
The Institute of Electrical and Electronics Engineers, Inc.
Publication Date:
Dec 7, 2000
Scope:
Guiding principles are included for the development of test
procedures for
— Thermal evaluation of electrical insulating materials
(EIM)
— Thermal evaluation of electrical insulation systems
(EIS)
— Thermal classification 1 of EIS for rating electric equipment
The principles are presented in the following order:
— Clause 4, General concepts
— Clause 6, Evaluation of the thermal capability of EIM
— Clause 7, Limiting temperatures and their measurement for
EIS
— Clause 8, Thermal evaluation of EIS
In the application of these principles, variations are necessary
to suit the widely different types of equipment and service
conditions that are considered in equipment standards. When
specific equipment, IEEE, or other recognized standards based on
these principles are available, they should take precedence over
this recommended practice.
Keywords:
- aging factors
- EIM
- EIS
- electrical insulating material
- electrical insulating system
- electrical properties
- electrical stress
- environmental stress
- factor of influence
- hottest-spot temperature
- mechanical properties
- mechanical stress
- observable temperature rise
- relative temperature index
- temperature index
- temperature limits
- thermal aging
- thermal evaluation
- voltage stress
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