The mechanism and behaviour of water treeing in polymeric materials

Author

Al-Hasawi, W.M. ; Hossam-Eldin, A.A. ; Pearmain, A.J.

Author_Institution

Coll. of Technol. Studies, Kuwait

fYear

1993

fDate

4-7 Oct 1993

Firstpage

573

Lastpage

577

Abstract

The internal structure, initiation and growth of water treeing (WT) is investigated using the direct observation method. Some commonly used polymers are investigated. Alternating-voltage at different frequencies, (50 Hz to 12.5 kHz) and direct-voltages are applied to laboratory made specimens. Many electrolytic solutions of different conductivities are tried. The effects of needle tip radius, electric field, and the time of voltage application are examined. The phenomena of WT are simulated and a computer model is developed, using the finite difference method. The experimental and simulated results show good agreement. The mechanism of WT initiation and propagation behavior is explained

Keywords

organic insulating materials; 50 Hz to 12.5 kHz; computer model; electric field; electrolytic solutions; finite difference method; needle tip radius; polymeric materials; time of voltage application; water treeing; Application software; Computational modeling; Computer simulation; Conducting materials; Conductivity; Frequency; Laboratories; Needles; Polymers; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Electronics Insulation Conference and Electrical Manufacturing & Coil Winding Conference, 1993. Proceedings., Chicago '93 EEIC/ICWA Exposition

Conference_Location

Chicago, IL

ISSN

1071-6270

Print_ISBN

0-7803-0847-6

Type

conf

DOI

10.1109/EEIC.1993.631269

Filename

631269