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Our Outdoor Gas Circuit Breaker is designed for reliable fault interruption and switching control in high voltage outdoor substations, transmission networks, and industrial power systems. Using advanced SF6 gas insulation and arc-quenching technology, this breaker provides stable performance under demanding operating conditions including temperature variations, heavy pollution, and continuous switching requirements.
Unlike conventional outdoor switching equipment that requires frequent maintenance, the SF6-based design provides excellent dielectric recovery, low contact erosion, and extended service intervals. The breaker combines a sealed gas chamber, optimized interrupter structure, and durable mechanical operating system to deliver dependable protection for transformers, transmission lines, capacitor banks, and industrial feeders.
Designed for utility companies, EPC contractors, and electrical equipment integrators, this Outdoor SF6 Circuit Breaker supports flexible installation configurations including AIS substations and outdoor high voltage switchyards. Its compact structure, corrosion-resistant enclosure, and intelligent monitoring options make it suitable for modern grid upgrade projects.
The core of the Outdoor Gas Circuit Breaker is its high-performance SF6 interrupter system, which rapidly extinguishes electrical arcs during short-circuit conditions while maintaining excellent insulation performance after interruption. The puffer-type arc extinguishing chamber optimizes gas flow distribution, reducing operating energy requirements and improving mechanical reliability.
The following parameters represent typical configurations of our outdoor SF6 circuit breaker series. Customized voltage ratings, current capacity, and control solutions are available according to project requirements.
| Parameter | Specification |
|---|---|
| Rated Voltage | 72.5 kV / 126 kV / 145 kV |
| Rated Frequency | 50 Hz / 60 Hz |
| Rated Continuous Current | 2000 A / 3150 A |
| Rated Short-Circuit Breaking Current | 31.5 kA / 40 kA |
| Rated Short-Time Withstand Current | 31.5 kA – 40 kA (3 seconds) |
| Insulation Medium | High-purity SF6 gas |
| SF6 Gas Leakage Rate | ≤0.5% per year |
| Operating Mechanism | Motor-charged spring / Hydraulic mechanism |
| Mechanical Endurance | ≥10,000 CO operations |
| Ambient Temperature Range | -30°C to +50°C (extended range available) |
| Protection Level | IP55 outdoor control cabinet |
| Applicable Standards | IEC 62271-100 / IEC 62271-1 / ANSI C37 |
Selecting a high voltage circuit breaker requires more than meeting electrical ratings. Equipment reliability, maintenance requirements, environmental adaptability, and long-term operating costs are critical factors for utilities and industrial users.
The Outdoor Gas Circuit Breaker is widely applied in medium and high voltage power networks where reliable switching and protection are essential.
| Application Area | Typical Use |
|---|---|
| Power Transmission Substations | Transformer protection, busbar switching, and fault isolation |
| Renewable Energy Plants | Wind farm and solar power collector system protection |
| Industrial Power Systems | Motor feeders, heavy equipment protection, and energy distribution |
| Utility Distribution Networks | Reliable switching for regional grid modernization projects |
Every Outdoor Gas Circuit Breaker undergoes comprehensive factory testing before delivery. Testing procedures include insulation withstand testing, main circuit resistance measurement, mechanical operation verification, SF6 leakage inspection, and functional performance testing.
With advanced manufacturing processes, strict quality control procedures, and engineering support for installation and commissioning, we provide reliable circuit breaker solutions for global power infrastructure projects. Customized designs, OEM cooperation, and technical consultation are available for utility operators, EPC companies, and electrical equipment distributors.
