Title :
Influence of diffusion on some electrical properties of synthetic cables
Author :
Bezille, J. ; Janah, H. ; Chan, J. ; Hartley, M.D.
Author_Institution :
Alcatel Cable, Calais, France
Abstract :
It was shown previously that low-molecular-weight fractions of copolymers used in semiconductive compounds diffuse into the insulation during the cable manufacturing process. In the present work, the influence of this diffusion on electrical properties such as AC, DC, and impulse strength has been studied. Initial tests on thin cross-linked polyethylene films peeled from full-size cables have shown different trends. Interfacial diffusion has a detrimental effect on DC strength, but its effect on AC and impulse strength is not clear
Keywords :
cable insulation; cable testing; chemical interdiffusion; electric breakdown of solids; electric strength; impulse testing; insulation testing; organic insulating materials; polymer films; polymers; power cables; AC strength; DC strength; XLPE cables; breakdown; cable insulation; copolymers diffusion; electrical properties; impulse strength; interfacial diffusion; synthetic cables; thin cross-linked polyethylene films; Aging; Cable insulation; Dielectrics and electrical insulation; Electric breakdown; Fuses; Spectroscopy; Testing; Transistors; Voltage; Wire;
Conference_Titel :
Electrical Insulation and Dielectric Phenomena, 1992. Annual Report. Conference on
Conference_Location :
Victoria, BC
Print_ISBN :
0-7803-0565-5
DOI :
10.1109/CEIDP.1992.283155
