Conductivity of crosslinked polyethylene influenced by water

Author

Olsson, Carl-Olof ; Kallstrand, B. ; Ghorbani, Hamidreza

Author_Institution

Dept. of Power Technol., ABB AB, Vasteras, Sweden

fYear

2014

fDate

19-22 Oct. 2014

Firstpage

832

Lastpage

835

Abstract

The conductivity of XLPE insulation plates has been measured with different levels of water concentration. Tapes have been used to humidify the insulation plates in a heat treatment step. Three different levels of water concentration was provided by the tapes. The apparent conductivity was measured for 24 h at 70°C and 30 kV/mm. It is found that the conductivity is increasing with increasing water concentration. It is also found that other polar substances emanating from one of the tapes had a dominating influence on the conductivity. In combination with high water concentration, the conductivity is increased to more than 100 times the conductivity of the reference plate.

Keywords

XLPE insulation; electrical conductivity measurement; heat treatment; plates (structures); water; XLPE insulation plate conductivity; heat treatment step; polar substances; samples crosslinked polyethylene conductivity measurement; tapes; temperature 70 degC; water concentration; Conductivity; Conductivity measurement; Current measurement; Insulation; Materials; Temperature measurement; Time measurement; HVDC; cable; insulation; polyethylene; water;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Insulation and Dielectric Phenomena (CEIDP), 2014 IEEE Conference on

Conference_Location

Des Moines, IA

Type

conf

DOI

10.1109/CEIDP.2014.6995789

Filename

6995789