Water tree induced electrical changes in low density polyethylene

Author

Li, H.M. ; Crichton, B.H. ; Fouracre, R.A. ; Given, M.J. ; Shu, W.

Author_Institution

Dept. of Electron. & Electr. Eng., Strathclyde Univ., Glasgow, UK

fYear

1994

fDate

5-8 Jun 1994

Firstpage

391

Lastpage

394

Abstract

Water treeing may be induced in polymeric insulation by the synergistic effect of electrical stress and moisture. A study of electrical polarization and dielectric relaxation may be an effective way of evaluating factors affecting water treeing. For instance the presence of ionic salts has been identified as important and under suitable conditions such an electrical study may indicate the manner of transportation of ions in a polymer under electrical stress. Interpretation and development of diagnostic techniques based on electrical measurement would also rely on information from such studies

Keywords

dielectric polarisation; dielectric relaxation; polyethylene insulation; thermally stimulated currents; trees (electrical); diagnostic techniques; dielectric relaxation; electrical polarization; electrical stress; ionic salts; low density polyethylene; polymeric insulation; synergistic effect; water tree induced electrical changes; Dielectrics and electrical insulation; Electric variables measurement; Moisture; Plastic insulation; Polarization; Polyethylene; Polymers; Stress; Transportation; Trees - insulation;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Insulation, 1994., Conference Record of the 1994 IEEE International Symposium on

Conference_Location

Pittsburgh, PA

ISSN

1089-084X

Print_ISBN

0-7803-1942-7

Type

conf

DOI

10.1109/ELINSL.1994.401487

Filename

401487