Title :
Thermal aging of EPR cables
Author :
Montanari, Gian Carlo
Author_Institution :
Istituto di Elettrotecnica Ind., Bologna Univ., Italy
Abstract :
The results of thermal endurance tests performed on models of EPR (ethylene-propylene rubber) cables are presented. The problems of selecting the properties related to aging and their endpoints are discussed. A method for obtaining an objective failure criterion for different properties and a unique thermal endurance graph are described. The thermal life line thus obtained, pertinent to the electric strength, weight loss, tensile strength, and the thermal endurance indices, is reported. A life model is proposed, and its fit to the experimental results is shown. A life model that relates the slope of life lines to choice of endpoint is derived
Keywords :
ageing; cable insulation; electric strength; insulation testing; life testing; rubber; tensile strength; EPR cables; aging; electric strength; ethylene-propylene rubber; failure criterion; life model; tensile strength; thermal endurance graph; thermal endurance tests; thermal life line; weight loss; Aging; Cables; Conductors; Dielectric measurements; IEC standards; Life testing; Paramagnetic resonance; Performance evaluation; Temperature; Thermal stresses;
Conference_Titel :
Properties and Applications of Dielectric Materials, 1988. Proceedings., Second International Conference on Properties and Applications of
Conference_Location :
Beijing
DOI :
10.1109/ICPADM.1988.38399
