Evolution of ac and impulse breakdown strength of HV XLPE cable after long term test. Correlation with physical properties

Author

Bezille, J. ; Janah, H. ; Chan, J. ; Hartley, M.

Author_Institution

Alcatel Cable, Calais, France

fYear

1994

fDate

23-26 Oct 1994

Firstpage

582

Lastpage

587

Abstract

Despite the good knowledge of actual materials for HV insulation cable, the influence of aging on dielectric properties is not well known. Recent 90 kV XLPE cable aged on site with load cycles has been investigated just after fabrication, after 15 000 hours and 30 000 hours aging. In addition, the thermal loop after 30 000 hours only stressed with thermal cycles is also under investigation, allowing separation of thermal and electrical stresses influence on insulation aging. Electrical and physical properties are followed with aging time and compared with those of unaged insulation

Keywords

ageing; 15000 hour; 30000 hour; 90 kV; AC breakdown strength; HV cable insulation; XLPE; aging; dielectric properties; electrical stress; impulse breakdown strength; long term test; thermal cycles; thermal loop; thermal stress; Aging; Dielectric breakdown; Dielectric materials; Dielectric thin films; Dielectrics and electrical insulation; Electric breakdown; Impulse testing; Performance evaluation; Thermal stresses; Wire;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Insulation and Dielectric Phenomena, 1994., IEEE 1994 Annual Report., Conference on

Conference_Location

Arlington, TX

Print_ISBN

0-7803-1950-8

Type

conf

DOI

10.1109/CEIDP.1994.592033

Filename

592033