Insulators, typically composed of insulating components (such as porcelain or glass) and metallic attachments (like steel feet, iron caps, flanges, etc.), are assembled using adhesives or mechanical clips. Insulators are widely used in power systems, generally serving as external insulation that operates under atmospheric conditions. They are essential for supporting the external live conductors of overhead transmission lines, power plants, substation busbars, and various electrical equipment, ensuring they remain insulated from the ground (or grounding objects) and other conductors with differing electrical potentials.