Surge Arrester‑Zinc Oxide Type

This zinc oxide surge arrester is a gapless device designed for overvoltage protection in power systems. Suitable for lightning protection in substations, insulation protection for power equipment, and surge protection in industrial distribution systems, it is widely used across substations, transmission lines, distribution networks, and industrial power facilities.

Manufactured by Yueqing JASCO Electric, this series of zinc oxide surge arresters features low residual voltage, high discharge capacity, strong energy absorption capabilities, and stable operational performance.

Internally, the The Zinc Oxide Surge Arrester utilizes high-quality zinc oxide (ZnO) varistor discs that exhibit excellent non-linear voltage-current characteristics. Under normal operating voltage, the discs maintain high resistance and low leakage current. When subjected to lightning or switching overvoltages, the discs rapidly conduct and dissipate surge energy, thereby limiting residual voltage and protecting transformers, switchgear, and transmission line insulators, while reducing the risk of insulation breakdown in power equipment.

Externally, The Zinc Oxide Surge Arrester is available with either lightweight, hydrophobic silicone composite housing or porcelain housing known for its high mechanical strength and heat resistance. Both materials are suitable for outdoor power equipment protection under their respective operating conditions; for specialized environments - such as high-altitude, heavily polluted, or coastal salt-spray areas - insulation configurations, creepage distances, and protection schemes are selected based on specific project requirements.

A wide range of specifications is available, including various rated voltages, continuous operating voltages, and nominal discharge currents; specific model selection should be determined based on system parameters and on-site operating conditions.