Positioning Of Pvc Pre-insulated Bushings In Power Distribution Networks

pre insulated sleeve is a specialized component for cable connection points, wire joints, and other similar locations. Its manufacturing materials and design are directly related to the electrical integrity of the system and the quality of on-site construction. Materials with stable dielectric properties—such as polyvinyl chloride (PVC)—have long been used in insulation products, including cable sheaths, pre insulated junction sleeve and related insulation protection components. PVC itself is made by polymerizing ethylene and chlorine and is widely used in electrical conduits, wire sheaths, and other insulation applications. Its mechanical properties, electrical insulation properties, and environmental resistance are suitable for conventional power applications.

In the production process, PVC undergoes industrial processing such as extrusion or calendering to precisely control its cross-sectional shape and thickness, meeting the requirements of insulated joint sleeve specifications for different sizes and current carrying capacities. This material exhibits good manufacturing consistency for conduit products with low to medium voltage ratings in its finished state, and is therefore adopted by power hardware manufacturers.