Overview
SF6 Circuit Breaker
Our Outdoor Type SF6 Gas Insulated Circuit Breakers offer robust and reliable performance in high-voltage applications, with voltage ratings of 66kV (tested up to 72.5kV) and 132kV (tested up to 145kV). These circuit breakers are specially designed for outdoor installations, ensuring efficient switching and fault interruption in medium and high-voltage transmission systems. Utilizing SF6 gas as an insulating and arc-extinguishing medium, these circuit breakers provide enhanced safety, durability, and operational reliability in the toughest environmental conditions.
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key features
Voltage Ratings
Available in 66kV and 132kV models, tested to withstand voltages up to 72.5kV and 145kV respectively, offering versatile solutions for high-voltage networks.
SF6 Gas Insulation
The use of SF6 (Sulphur Hexafluoride) gas as the primary insulating medium ensures excellent dielectric strength, superior arc quenching properties, and minimal contact wear, resulting in high operational safety and longevity.
Advanced Arc Quenching
The superior arc-extinguishing capability of SF6 gas allows for reliable interruption of high fault currents, reducing the risk of equipment damage and maintaining system integrity.
Minimal Maintenance
Designed for long-term durability, these circuit breakers require minimal maintenance due to the stable nature of SF6 gas and reduced mechanical wear, leading to lower operating costs over time.
Compact and Space-Saving Design
The gas-insulated design allows for a more compact footprint compared to air-insulated systems, saving valuable space in outdoor substation installations.
High Reliability in Harsh Conditions
Engineered to perform reliably in adverse weather conditions, our SF6 circuit breakers provide consistent protection and operation in environments prone to dust, humidity, extreme temperatures, and pollution.
High Safety Standards
Equipped with multiple safety interlocks and pressure monitoring systems, these breakers are designed to ensure operational safety during normal use as well as during maintenance operations.
Type Tested
Both models (66kV and 132kV) undergo rigorous testing for mechanical and electrical endurance, ensuring compliance with international standards such as IEC 62271.
Applications
SF6 Circuit Breakers rated at 72.5kV and 145kV are widely used in high-voltage transmission and sub-transmission networks. They are ideal for power substations, utility grids, industrial switchyards, and critical infrastructure such as railways, airports, and power generation plants. SF6 breakers provide reliable interruption of high fault currents and ensure minimal contact wear. Their robust design, high insulation strength, and low maintenance make them suitable for outdoor and indoor installations in demanding high-voltage environments.