Material Solutions For Cable Termination Protection In Coastal Environments

Coastal substations and offshore wind farms' power transmission circuits are subjected to high-concentration salt spray corrosion. Chlorides deposit on the surface of electrical equipment, forming an electrolyte film that accelerates the electrochemical corrosion of metal conductors and significantly reduces the surface resistance of insulation materials. Traditional heat-shrinkable or cast-resin cable termination interfaces are prone to surface discharge channels due to salt particle penetration, significantly increasing the risk of protection failure.

Cold Shrink Cable Accessories utilizes the memory shrinkage characteristics of pre-expanded elastomers to construct a sealing barrier. The high-performance silicone rubber substrate possesses excellent hydrophobicity, causing surface salt spray droplets to exhibit a high contact angle and roll off quickly, significantly reducing ion deposition. The one-piece molded termination structure eliminates seams and interfaces, preventing salt intrusion paths. Constant radial pressure maintains the airtightness between the cable core, stress cone, and outer insulation, blocking the longitudinal migration of corrosive media.

The material formulation is specifically designed to combat coastal climates. Special anti-hydrolysis agents and UV stabilizers are added to delay the degradation of silicone rubber molecular chains, ensuring long-term elastic recovery. An optimized formulation of anti-creep additives enhances the resistance of the sheath to arc erosion under polluted salt spray conditions. The insulation layer is made of high-purity cross-linked polymer to maintain volume resistivity and dielectric strength under extreme humidity conditions.