Effects of insulator surface states on RTV coating in hot-and-humid area

The operating performance of room temperature vulcanized silicone rubber (RTV) coating can be affected by insulator surface statement especially in hot and humid areas. In this paper, glass sheets were used to study the effect of attachment and weather on RTV coating. The results indicate that contamination, hygroscopic attachment or bad weather is harmful to the surface condition, causing bubbling or catering, reducing the adhesion and increasing the leakage current. Relative suggestions were taken out to guarantee the quality of RTV coating on spot.