Title :
Lifetime dependence on relative humidity of polymers subjected to PD aging
Author :
Bozzo, Riccardo ; Gemme, C. ; Guastavino, F. ; Tiemblo, P.
Author_Institution :
Dipt. di Ingegneria Elettrica, Genova Univ., Italy
Abstract :
The work presented in this paper consists of a systematic study on the influence of moisture on the behaviour of polymers submitted to Partial Discharges. Three chemically different polymers have been submitted to PD until breakdown, varying the relative humidity from 17% to 83%. Qualitatively the same evolution of the samples´ lifetime with moisture is found for the three of them. Lifetime increases with increasing humidity up to a critical value; further increase in moisture involves quick diminishing of lifetime. This value seems to depend on the ability to absorb water of each of the polymers
Keywords :
ageing; environmental degradation; humidity; insulation testing; life testing; moisture; organic insulating materials; partial discharges; polymers; PD aging; breakdown; lifetime; moisture; partial discharge; polymer; relative humidity; water absorption; Aging; Dielectrics and electrical insulation; Electric breakdown; Electrodes; Humidity; Moisture; Partial discharges; Plastic insulation; Polymer films; Testing;
Conference_Titel :
Electrical Insulation and Dielectric Phenomena, 1996., IEEE 1996 Annual Report of the Conference on
Conference_Location :
Millbrae, CA
Print_ISBN :
0-7803-3580-5
DOI :
10.1109/CEIDP.1996.564638
