24KV pin type composite insulator has a better performance in mechanical strength than porcelain pin insulators for the glass fibre reinforced resin rod produced in a continuous pultrusion process.

Different diameters of 24KV pin type composite insulator rod are available depending on the application. The content of composite pin insulators fibres determines the specific intrinsic tensile and bending strength of the rods.

The pin insulators glass sizing is important for the bond to the resin matrix. The resin used on 24KV pin type composite insulator matrix itself must be “electrically graded”, characterized by low moisture absorption and by negligible change of electrical and mechanical properties. The resin elongation must be balanced with the glass elongation to prevent pin insulators rod cracks and fractures when being subjected to loadings. Typically, epoxy-based resins are used on 24KV composite pin type insulator rod today.

Fillers are used for different purposes, which gives the 24KV pin type composite insulator rod a transparent or opaque appearance. When the raw materials of pin insulators are carefully checked, process parameters are accurately selected and routine checks are determined using statistics, both types of 24KV pin type composite insulator rod offer excellent and reliable performance.