Title :
Field and laboratory aging of RTV silicone insulator coatings
Author :
Homma, Hiroya ; Mirley, Christopher L. ; Ronzello, JoAnne ; Boggs, Steven A.
Author_Institution :
Electr. Insulation Res. Center, Connecticut Univ., Storrs, CT, USA
fDate :
10/1/2000 12:00:00 AM
Abstract :
The silicone-based coating applied to 345 kV post insulators in a substation on the shore of Long Island Sound has depolymerized over a period of about 7 years although no in-service failures have occurred. However, the increasing rate of depolymerization suggests that the coatings will have to be renewed in the near future. This paper reports comparisons of aging and material properties for a number of RTV silicone insulator coatings and measurements related to application of a new coating over an existing, field-aged coating
Keywords :
ageing; polymer insulators; silicone insulation; 345 kV; Long Island Sound; RTV silicone insulator coatings; depolymerized coating; field aging; laboratory aging; material properties; post insulators; silicone-based coating; substation; Aging; Coatings; Creep; Insulation; Laboratories; Material properties; Porcelain; Substations; Surface cracks; Voltage;
Journal_Title :
Power Delivery, IEEE Transactions on
