Pollution flashover remains a major cause of transmission line outages, particularly in coastal, industrial, and desert regions. This article presents a dual solution combining Room Temperature Vulcanized (RTV) silicone rubber coatings with optimized creepage distance design. The synergistic approach enhances insulator surface hydrophobicity while ensuring adequate electrical withstand capability, offering utilities a reliable and cost-effective strategy against pollution-induced flashover.
Read More
Silicone rubber cold-shrink accessories have become the dominant technology for medium- and high-voltage cable joints and terminations, largely replacing pre-molded and heat-shrink alternatives.
Read More
IntroductionComposite insulators, with silicone rubber (SIR) as the primary shed material, have been widely deployed in high-voltage transmission and substation applications due to their lightweight, excellent hydrophobicity, and superior pollution flashover performance.
Read More
Pollution flashover on transmission line insulators remains one of the most persistent threats to power grid reliability worldwide. This article presents a comprehensive dual-pronged solution combining Room Temperature Vulcanized (RTV) silicone rubber anti-pollution flashover coatings with optimized creepage distance design. The synergistic application of these two approaches offers utilities a robust, cost-effective strategy to mitigate pollution-related outages, extend maintenance intervals, and enhance overall system reliability in contaminated environments.
Read More
High-voltage plug-in connectors (separable connectors used in cable accessories, switchgear, and EV charging infrastructure) rely heavily on silicone rubber as an insulating and sealing material. The interface between silicone rubber and other components—such as conductive inserts, housing plastics, or cable insulation—determines the connector’s reliability over its operational lifetime. This article discusses the material compatibility of silicone rubber interfaces and their long-term aging performance under electrical, thermal, and environmental stresses.
Read More
Drop-out fuses are critical components for the protection of distribution transformers and overhead lines. In recent decades, silicone rubber has become the material of choice for the external insulation of these fuses due to its superior hydrophobic properties, light weight, and resistance to tracking compared to traditional porcelain. However, under long-term exposure to harsh outdoor environments, silicone rubber is susceptible to aging. This article explores the degradation mechanisms of silicone rubber—specifically focusing on ultraviolet (UV) radiation and surface pollution—and discusses advanced coating technologies designed to mitigate these effects, thereby extending the operational lifespan of electrical infrastructure.
Read More