Topic

IEEE Draft Recommended Practice for General Principles for Temperature Limits in the Rating of Electrical Equipment and for the Evaluation of Electrical Insulation

Abstract

This recommended practice is intended to serve in the preparation of standards that are principally concerned with the thermal endurance of electrical insulating materials and simple combinations of such materials, the establishment of limiting temperatures of electrical Insulation systems, and the provision of general principles for thermal classification of electrical insulation systems

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 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.

Purpose

This recommended practice is intended to serve in the preparation of standards that are principally concerned with the thermal endurance of EIM and simple combinations thereof, with the establishment of limiting temperatures of EIS, and with the provision of general principles for thermal classification of EIS.

Topic

Fields, Waves and Electromagnetics, Power, Energy and Industry Applications