ZW7-40.5 Outdoor High-Voltage Vacuum Circuit Breaker (with External Current Transformer)

Overview: The ZW7-40.5 is a state-of-the-art, three-phase AC outdoor vacuum circuit breaker designed for reliable performance in 50/60 Hz power systems with a rated voltage of 40.5 kV. Specifically engineered for harsh environments, it serves as a critical control and protection unit for industrial and mining enterprises, power plants, and electrical substations. This model features an external current transformer configuration, making it exceptionally suitable for applications requiring frequent operations and accurate metering. Key Features & Benefits: Robust Outdoor Performance: Built to withstand extreme conditions, it operates reliably in ambient temperatures ranging from -40°C to +40°C. Its design meets high soiling level (≤ IV) and wind speed (≤ 34 m/s) standards, ensuring stability in desert and coastal environments. High Breaking Capacity: Capable of handling rated short-circuit breaking currents up to 31.5 kA and peak withstand currents up to 80 kA, ensuring maximum safety for your grid infrastructure. Reliable Insulation: Certified with a lightning impulse withstand voltage of 185 kV and a 1-minute power frequency withstand voltage of 95 kV, guaranteeing robust insulation and operational security. Versatile Application:Ideal for high-voltage transmission and distribution systems, providing excellent control and protection for overhead lines and substation equipment. Technical Specifications (Summary): Rated Voltage: 40.5 kV Rated Current: 1250 / 1600 / 2000 / 2500 A Rated Frequency: 50/60 Hz Mechanical Life: Up to 10,000 operations Weight: 1000 KG Rated Short-Circuit Breaking Current With its superior arc-extinguishing properties and maintenance-friendly design, the ZW7-40.5 is the optimal choice for ensuring the stability and continuity of modern power networks.