Insulators, typically composed of insulating materials (such as porcelain or glass) and metallic fittings (like steel legs, iron caps, flanges, etc.), are assembled using adhesive bonding or mechanical clips. Insulators are widely used in power systems, generally serving as external insulation and operating under atmospheric conditions. They are essential for supporting the external live conductors of overhead transmission lines, generators, transformer stations, and various electrical equipment, ensuring they remain insulated from the ground (or grounding objects) and other conductors with differing electrical potentials.