RTV Silicone Rubber Coatings for Outdoor Insulators
from IEEE transactions on Dielectrics and Electrical Insulation   Vol. 6 No. 5, October 1999
E.A. Cherney and R.S. Gorur

ABSTRACT
This paper presents a review of room temperature vulcanized (RTV) silicone rubber high voltage insulator coatings (HVIC). These coatings are designed to replace greasing and water washing of insulators. Present day coatings are the result of nearly thirty years of development and use. In all but a few very dirty environments, these coatings have lasted ten or more years without maintenance and where maintenance has been found to be necessary, water washing is done at a significantly reduced schedule. The paper focuses on the important characteristics of these coatings and on the rigiorous attention that is required in their application in order to ensure good performance.

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