Some aspects of water tree growth in XLPE insulation exposed to DC voltage

Author

Czaszejko, Tadeusz

Author_Institution

Dept. of Electr. & Comput. Syst. Eng., Monash Univ., Melbourne, Vic., Australia

fYear

1995

fDate

17-20 Sep 1995

Firstpage

145

Lastpage

148

Abstract

A preliminary study of the influence of the short exposure to DC voltage on the growth of water trees in XLPE cable insulation was performed. The DC voltage of 4U₀ (where U₀ is the rms rated voltage) was applied for the duration of 15 minutes prior to AC aging, in one set of samples, and in the middle of AC aging, in another set of identical samples. The results have shown an increase of the average length of water trees grown in samples subjected to DC voltage compared with those not exposed to DC voltage. The result was similar for accelerated aging with the liquid needle electrode method and for plain samples aged under rated voltage

Keywords

XLPE insulation; ageing; insulation testing; life testing; power cable insulation; trees (electrical); 15 min; DC voltage; XLPE insulation; accelerated aging; liquid needle electrode method; power cable insulation; rated voltage; rms rated voltage; water tree growth; Aging; Cable insulation; Cable shielding; Cables; Dielectrics and electrical insulation; Electrodes; Needles; Polyethylene; Trees - insulation; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Insulating Materials, 1995. International Symposium on

Conference_Location

Tokyo

Print_ISBN

4-88686-047-8

Type

conf

DOI

10.1109/ISEIM.1995.496529

Filename

496529