Title :
Electric stress grading of composite bushings using high dielectric constant silicone compositions
Author :
Shen, Ying ; Cherney, Edward A. ; Jayaram, Shesha H.
Author_Institution :
Dept. of Electr. & Comput. Eng., Waterloo Univ., Ont., Canada
Abstract :
The paper presents the results of a study on the use of high dielectric constant silicone housing compositions on composite bushings to shape the electric stress in the vicinity of the mounting flange, thereby eliminating the need for separate grading rings or capacitor foils. The materials studied are various mixtures of barium titanate and aluminum powder in a two-part RTV silicone yielding a dielectric constant of 15, and sufficiently low in concentration as not to affect the molding properties of the silicone.
Keywords :
aluminium; barium compounds; bushings; permittivity; silicone rubber; titanium compounds; Al; BaTiO3; RTV silicone yielding; aluminum powder; barium titanate; capacitor foils; composite bushings; dielectric constant; electric stress grading; field distribution; silicone housing compositions; Aluminum; Barium; Capacitors; Dielectric materials; Flanges; High-K gate dielectrics; Insulators; Powders; Stress; Titanium compounds;
Conference_Titel :
Electrical Insulation, 2004. Conference Record of the 2004 IEEE International Symposium on
Print_ISBN :
0-7803-8447-4
DOI :
10.1109/ELINSL.2004.1380575
