Investigation of the factors governing water absorption in HV composite insulation

Author

Abder-Razzaq, M. ; Auckland, D.W. ; Varlow, B.R.

Author_Institution

Div. of Electr. Eng., Manchester Univ., UK

Volume

5

Issue

6

fYear

1998

fDate

12/1/1998 12:00:00 AM

Firstpage

922

Lastpage

928

Abstract

The sensitivity of HV composites to water absorption is studied for various materials and conditions. The role of ions in the transportation of water into composite insulation is investigated. The dependence of water uptake on the applied electric field, the nature of the ions and their concentration are reported. The effect of the frequency of the applied field on water ingress is presented for a range of frequencies from 5 to 15 kHz. The strength of adhesion shown by various reinforcing materials to the surrounding resin is chosen to demonstrate the effect of these materials on water absorption. An investigation of the role of temperature in water uptake is also described

Keywords

absorption; composite insulating materials; insulation testing; moisture; 5 to 15 kHz; HV composite insulation; adhesion; applied electric field; reinforcing materials; water absorption; water ingress; water uptake; Absorption; Composite materials; Degradation; Dielectrics and electrical insulation; Frequency; Glass; Plastic insulation; Polymers; Resins; Temperature;

fLanguage

English

Journal_Title

Dielectrics and Electrical Insulation, IEEE Transactions on

Publisher

ieee

ISSN

1070-9878

Type

jour

DOI

10.1109/94.740777

Filename

740777