Space Charge Studies in XLPE from Power Cables Using Combined Isothermal and Thermostimulated Current Measurements

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Cross-linked polyethylene (XLPE) peelings from aged power cables from three different sources were studied using a combined procedure of isothermal and thermo-stimulated current measurements. Different parameters, such as electric field, temperature, charging/discharging times, can be selected in order to make an analysis of the space charge characteristics (such as, relaxation times and activation energies). Three different cables peelings were analyzed: A – electrically aged in the laboratory at high temperature, B – service aged for 18 years and C – thermally aged in the laboratory at high temperature. The results were compared for the different types of samples and also with previous results on laboratory aged and produced films of low-density polyethylene (LDPE) and XLPE.

Info:

Periodical:

Materials Science Forum (Volumes 514-516)

Edited by:

Paula Maria Vilarinho

Pages:

935-939

DOI:

10.4028/www.scientific.net/MSF.514-516.935

Citation:

M. Carmo Lança et al., "Space Charge Studies in XLPE from Power Cables Using Combined Isothermal and Thermostimulated Current Measurements", Materials Science Forum, Vols. 514-516, pp. 935-939, 2006

Online since:

May 2006

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$35.00

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