IEEE Recommended Practice for General Principles for Temperature Limits in the Rating of Electrical Equipment and for the Evaluation of Electrical Insulation
STANDARD published on 21.8.2026
Designation standards: IEEE 1-2026
Publication date standards: 21.8.2026
The number of pages: 38
Approximate weight : 114 g (0.25 lbs)
Country: International technical standard
Category: Technical standards IEEE
Revision Standard - Active.
The preparation of standards that are principally concerned with the thermal endurance of electrical insulating materials and simple combinations of such materials is intended to be served by this recommended practice; the establishment of limiting temperatures of electrical insulation systems is intended to be supported; and general principles for the thermal classification of electrical insulation systems are intended to be provided.
ISBN: 979-8-8557-3102-6, 979-8-8557-3666-3, 979-8-8557-3667-0
Number of Pages: 38
Product Code: STDAPE28628, STD28977, STDPD28977
Keywords: aging factors, EIM, EIS, electrical insulating material, electrical insulation system, electrical properties, electrical stress, environmental stress, factor of influence, hottest-spot temperature, IEEE 1™, mechanical properties, mechanical stress, observable temperature rise, relative temperature index, RTI, temperature index, temperature limits, thermal aging, thermal evaluation, TI, voltage stress
Category: Insulation Coordination
Draft Number: P1/D5, Jan 2026 - APPROVED DRAFT