Property Specification
Type: High-Voltage Dead-Tank SF6 Circuit Breaker (72.5 kV to 550 kV)
Features: Engineered with a grounded metal-enclosed interrupter housing and a low center of gravity, this breaker combines a patented self-compression arc-quenching system with a stored-energy spring mechanism to achieve single-chamber fault interruption up to 90 kA Reinforced porcelain bushings provide high seismic stability and mechanical load strength, while pure SF6 (or optional gas mixtures and heating options) ensures all-climate performance from -60°C to +55°C, with optional pre-insertion resistors available for 362 kV and 550 kV classes.
Applications: High-voltage transmission substations, power grid switching stations, EHV line protection requiring pre-insertion switching (362 kV to 550 kV), installations demanding extensive CT protection schemes, high short-circuit duty environments (up to 90 kA), and substations located in active seismic zones or extreme cold-climate regions.
