YUANKY Polymer Type Lightning Arrester is a high-performance overvoltage protection device engineered to safeguard electrical equipment against lightning surges and transient overvoltages in medium-voltage power systems. Available in both gapless and gapped configurations, this series covers rated voltage levels of 42kV and 66kV with discharge current ratings of 5kA and 10kA, delivering reliable surge protection for a wide range of power distribution and transmission applications.

Built with advanced metal oxide varistor (MOV) technology, the gapless arrester provides continuous, non-linear voltage-dependent resistance that instantly conducts excess voltage to ground during surge events, then automatically returns to its high-resistance state under normal operating conditions. The gapped version incorporates series spark gaps to isolate the MOV element from the power frequency voltage under normal operation, reducing energy stress and extending service life. Both types feature a polymer housing made of high-grade silicone rubber, offering superior hydrophobicity, UV resistance, anti-pollution performance and mechanical strength compared to traditional porcelain housings. The lightweight polymer design also simplifies transportation and installation, while ensuring excellent sealing performance against moisture and environmental contaminants. With stable voltage-current characteristics and high energy absorption capacity, these arresters effectively clamp overvoltage levels to protect downstream insulation and equipment from damage caused by lightning strikes and switching surges.

This lightning arrester series serves a broad spectrum of medium-voltage applications across power systems and industrial facilities. It is widely installed on overhead distribution lines, power substations and transformer stations to protect transformers, switchgear, capacitors and other critical electrical equipment from lightning-induced overvoltages. In renewable energy systems such as wind farms and solar photovoltaic plants, it safeguards inverters, transformers and collection systems against surge damage. Industrial facilities including manufacturing plants, mining operations and petrochemical complexes rely on these arresters to protect motor control centers, distribution panels and sensitive automation equipment. The polymer housing’s pollution resistance makes it particularly suitable for coastal areas, industrial zones with heavy atmospheric contamination, and high-altitude regions where porcelain arresters may suffer from flashover issues. It is also commonly deployed in railway electrification systems and urban infrastructure power networks to ensure reliable operation.

With robust polymer construction, reliable surge protection performance and flexible configuration options, YUANKY polymer type lightning arrester provides a cost-effective and durable overvoltage protection solution for global power utilities, industrial operators and renewable energy projects.