Pin Insulator Polymer

The Pin Insulator Polymer PW-22-Y is an anti-pollution model made from polymer material. Its rated voltage is 22 kV. The structure height is 255 mm, and the disc diameter is 205 mm. The mechanical failing load is 11 kN. It complies with BS 137 and IEC 60383. The "W" indicates an anti-pollution design, while the "Y" indicates a long-shank design, as with our porcelain models. The creepage distance is 673 mm, and the dry arcing distance is 267 mm. The double-shed structure provides a long creepage path, which helps the product perform well in polluted environments. Polymer material is much lighter than porcelain for products of the same size. This reduces the effort required during installation and makes handling easier. The material also offers good impact resistance and is less likely to break than porcelain. The product is mainly used on 22 kV overhead lines, especially in urban suburbs and areas with heavy industrial pollution.

We use a specialized production process for polymer products. Our dedicated composite workshop is equipped with injection molding machines and shed assembly lines. The bonding between the core rod and silicone rubber sheds is a key part of production. We control this process carefully to ensure reliable sealing at the interface. Before shipment, we conduct tensile load tests and electrical performance tests on each piece. Our testing program also includes water diffusion tests and steep-front impulse tests. Many overseas customers choose polymer products because they can reduce shipping costs. A 20-foot container can hold more pieces compared with porcelain products of similar size. Our foreign trade team is familiar with export requirements for polymer products. They can provide complete material descriptions and relevant test reports for your order. These production and testing controls help ensure consistent quality for each Pin Insulator Polymer.

Normal delivery takes 30 to 40 days. The polymer vulcanization cycle affects the production schedule, so we recommend placing orders early. We provide free samples from available stock, and you only need to pay the freight cost. For bulk orders, we offer tiered pricing based on order volume. High-volume annual buyers may also receive additional rebates. We accept T/T and L/C payment methods. Both EXW and FOB terms are available. We pack the products in standard export cartons or wooden cases. Each piece is wrapped with bubble film, and the outer package is marked "Fragile." Our after-sales team follows up regularly to learn about product performance in your local operating environment. This Pin Insulator Polymer provides a practical combination of low weight, impact resistance, and pollution resistance for overhead distribution applications.

All products support custom dimensions, voltage ratings, OEM/ODM services, and manufacturing based on drawings.