The YW & YHW Zinc Oxide Surge Arrester Series deliver unmatched protection for power grids against lightning strikes and switching surges. The YW Series features polymer-housed ZnO varistors for coastal and industrial zones, offering 25+ years of corrosion-resistant performance. The YHW Series combines hybrid polymer-porcelain construction for extreme environments—high-altitude, seismic zones, and ultra-high-voltage grids (up to 500kV). Both series comply with IEC 60099-4 and GB 11032-2000, ensuring rapid μs-level surge clamping, 20kA fault handling, and 30% lower lifetime costs vs. traditional arresters. Ideal for substations, renewables, and critical infrastructure.