Description：

800kV Dead Tank SF6 Circuit Breaker is a high-performance ultra-high voltage device designed for critical power transmission systems. Featuring a robust dead tank structure, its live components are sealed in an SF6 gas-insulated metal casing, delivering superior arc extinction efficiency (100x faster than air) and dielectric strength (2-3x air’s at 1atm) to rapidly interrupt fault currents and ensure grid stability. The low-center-of-gravity design enhances seismic resistance, adapting to extreme climates and rugged terrains. Integrated with bushings and current transformers, it supports multi-function control for real-time measurement and protective switching. With a mechanical/electrical lifespan exceeding 30 years and a fully sealed design, maintenance frequency is minimized, cutting operational costs. Equipped with anti-misoperation interlocks and dual-insulation safeguards, it prioritizes personnel safety and system reliability. Ideal for UHV grids, power plants, and industrial applications, this breaker sets a benchmark for efficiency and durability in 800kV high-stress environments.

Main Features：

• Exceptional Arc Extinction and Insulation: Using SF6 gas as the medium, it enables rapid arc extinction and has strong insulation properties. It can quickly interrupt fault currents, ensuring stable operation under high - voltage conditions.
• Robust Dead - tank Structure: With a dead - tank design, the live parts are sealed in a metal tank, providing resistance to vibration, dust, and moisture, and enabling adaptation to harsh environments.
• Integrated Functional Configuration: Integrates components such as bushings and current transformers, with functions like measurement and protection, simplifying the system layout.
• Long Service Life and Low Maintenance: Boasts long mechanical and electrical service lives. The sealed structure reduces component aging, resulting in a long maintenance cycle and low costs.
• Multiple Safety Guarantees: Equipped with anti - misoperation interlocking devices and multiple insulation protections to ensure the safety of personnel and equipment.

Technical specifications：