Endurance characteristics of XLPE compounds under DC voltage

Author

Montanari, G.C. ; Ghinello, I. ; Peruzzotti, F. ; Albertini, M.

Author_Institution

Dept. of Electr. Eng., Bologna Univ., Italy

fYear

1998

fDate

22-25 Jun 1998

Firstpage

439

Lastpage

442

Abstract

The voltage endurance lines under DC electrical stress obtained from accelerated life tests performed on specimens of a reference XLPE (extra-clean) and two XLPE-based compounds are reported in this paper. The two compounds differ from the base material by the introduction of additives having the purpose of modifying the conductivity and trapping states, thus resulting in dynamic space-charge trapping. Both constant-voltage life tests and tests with periodic inversion of DC voltage are considered. It is shown that the voltage endurance lines may significantly change for voltage-reversal tests, to an extent which depends on the type of material tested

Keywords

XLPE insulation; electric breakdown; impurity states; insulation testing; life testing; power cable insulation; power cable testing; space charge; DC electrical stress; DC voltage application; XLPE compounds; accelerated life tests; additives; conductivity modification; constant-voltage life tests; dynamic space-charge trapping; endurance characteristics; periodic voltage inversion; trapping states modification; voltage endurance lines; voltage-reversal tests; Additives; Cables; Conducting materials; Life estimation; Life testing; Materials testing; Performance evaluation; Polymers; Stress; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Conduction and Breakdown in Solid Dielectrics, 1998. ICSD '98. Proceedings of the 1998 IEEE 6th International Conference on

Conference_Location

Vasteras

Print_ISBN

0-7803-4237-2

Type

conf

DOI

10.1109/ICSD.1998.709319

Filename

709319