ZW7-40.5kV High Voltage Outdoor Circuit Breaker The ZW7-40.5kV is a high-voltage outdoor vacuum circuit breaker designed for reliable operation in medium-voltage power distribution systems. It is widely used in substations, industrial plants, and renewable energy installations to protect electrical networks by interrupting fault currents and ensuring system stability. Key Features 1. Vacuum Interruption Technology The breaker utilizes a vacuum interrupter as the arc-quenching medium, ensuring minimal maintenance and high dielectric strength. Vacuum technology provides fast and efficient interruption of short-circuit currents up to 31.5kA, reducing wear and extending service life. 2. Outdoor Design Designed for harsh environments, the ZW7-40.5kV features a robust, weatherproof enclosure with corrosion-resistant materials. Its compact structure ensures easy installation on poles or structures without additional protective housing. 3. Spring-Operated Mechanism Equipped with a high-performance spring-operated mechanism, the breaker ensures quick and reliable opening/closing operations. The mechanical endurance exceeds 10,000 operations, ensuring long-term reliability. 4. Safety & Protection The breaker supports remote and local control, with integrated protection functions such as overcurrent and short-circuit tripping. It complies with IEC 62271 and other international standards for high-voltage equipment. 5. Low Maintenance Due to the vacuum interruption principle and sealed construction, the ZW7-40.5kV requires minimal maintenance compared to SF6 or oil-based breakers, reducing operational costs. Applications - Power Distribution Networks: Used in 35kV substations for feeder protection. - Industrial Facilities: Protects critical loads in mining, steel plants, and large factories. - Renewable Energy: Integrates into solar/wind farms for grid connection and fault isolation. Conclusion The ZW7-40.5kV outdoor vacuum circuit breaker offers high reliability, durability, and safety for medium-voltage applications. Its advanced design ensures efficient power system protection with minimal maintenance, making it a preferred choice for modern electrical networks. (Word count: 500)