Pin-type porcelain insulators are designed for low- and medium-voltage distribution lines, featuring a one-piece ceramic fired structure with a bottom fixing pin that mounts directly onto crossarms, serving dual roles of conductor support and insulation. The dense ceramic material blocks current conduction, while the glazed surface reduces dust buildup and minimizes leakage. Compact in size and simple to install, a single unit meets standard low-voltage line insulation needs, commonly used in rural distribution lines and in-plant power supply circuits. The equipment withstands natural weathering steadily, requiring only periodic surface cleaning to maintain insulation performance. Compared to suspension types, pin-type porcelain insulators are better suited for straight short-span line setups, with mature manufacturing processes adaptable to various small and medium distribution projects, widely applied in urban and rural grid infrastructure.
