Silicone Rubber Surge Arrester

Zinc oxide varistor blocks serve as the core protective component of silicone rubber surge arrester, featuring distinctive non-linear voltage characteristics. Once lightning surges or switching overvoltage intrude power circuits, these blocks rapidly drain excess surge current, preventing breakdown failures of all connected downstream equipment.

To secure reliable outdoor insulation, this silicone rubber surge arrester adopts multi-shed silicone rubber outer shell. This special layout effectively lengthens creepage distance, maintaining steady insulation performance amid humid, dusty, heavily polluted and long-term sunlit outdoor environments. Unlike conventional porcelain shells, silicone rubber composite material cuts down overall weight significantly, greatly simplifying logistics transportation and on-site installation work for construction teams.

Based on ZnO varistor technology, the arrester is designed to respond quickly when lightning impulse or switching overvoltage occurs in medium voltage systems. The silicone rubber housing is selected for outdoor insulation applications, providing hydrophobic properties and resistance to moisture, pollution and UV exposure during long-term operation.

With a shed-type insulation structure, the creepage distance is increased to improve insulation performance under different environmental conditions. Compared with traditional porcelain designs, the polymer housing reduces the overall weight of the arrester, which helps simplify transportation and installation work.

Different voltage ratings and discharge current levels can be provided according to specific medium voltage system requirements. Before delivery, each completed unit is inspected through electrical tests to verify key parameters and ensure that the product meets the required technical conditions.

This silicone rubber surge arrester is widely installed on medium voltage distribution networks, outdoor overhead power lines, transformer protection systems and power substations. It also works well for industrial power plants and renewable energy stations. For thunder-prone, humid or heavily polluted areas, it can effectively stabilize insulation performance and raise overall equipment operation reliability.

Our quality control system covers raw material incoming inspection, production process tracking and finished electrical performance testing. Before assembly, inspectors will check all ZnO varistor blocks, silicone rubber housings and metal fittings against official technical standards. Key manufacturing steps such as component assembly, integral sealing and insulation treatment will be monitored throughout production. Before shipment, each arrester will complete leakage current test, reference voltage test, residual voltage test, partial discharge test and power-frequency insulation test. Full inspection logs and certified test reports can be provided upon customer request.