Factory Direct Outdoor SF6 Circuit Breaker for Reliable Power Systems

Usune is a professional high-voltage electrical equipment manufacturer in China, specializing in the R&D, production, and customization of high and low voltage switchgear. The LW36 series Outdoor SF6 circuit breaker is the brand's core outdoor high-voltage product, specifically optimized and upgraded for harsh outdoor conditions such as extreme temperature differences, sandstorms, salt spray, and high altitudes.

This product is compatible with 50/60Hz AC power systems, covering a full range of voltage levels: 12kV, 24kV, 35kV, 72kV, 110kV, 126kV, 145kV, and 170kV. The equipment uses high-purity SF6 gas for insulation and rapid arc extinguishing, providing strong short-circuit breaking capacity. It is mainly used for the opening and closing control and short-circuit fault emergency protection of outdoor lines, transformers, and other equipment. It is a core and critical device for power receiving, distribution, and safety protection in outdoor power grids, and is widely used in various power engineering projects.

Core Product Advantages

1. Superior Outdoor Adaptability

The entire unit adopts an integrated design for corrosion resistance, waterproofing, dustproofing, and aging resistance, providing a high level of protection. It can operate stably in extreme temperature ranges from -40℃ to +45℃, effectively resisting harsh conditions such as rain and snow erosion, wind and sand impact, coastal salt spray corrosion, and high altitude and low pressure, solving the pain points of ordinary outdoor equipment being prone to failure and having poor stability.

2. Reliable Isolation and Insulation Performance

After the device is opened, it forms a clearly visible isolation break, with excellent overall insulation performance, completely cutting off the circuit and eliminating safety hazards such as leakage and false circuits, ensuring the safety of line maintenance and equipment operation, and meeting high-voltage power distribution safety standards.

3. Robust Structure and Long Service Life

The Outdoor SF6 circuit breaker body is made of high-quality steel and aluminum alloy, with high mechanical strength and excellent dynamic and thermal stability. It can withstand frequent opening and closing operations and instantaneous short-circuit impacts, with low structural loss and stable performance, significantly extending the service life of the equipment and reducing equipment replacement costs.

4. Flexible and Labor-Saving Operation

Standard configuration includes manual and electric dual operation modes, smooth operation with low resistance, and supports customized remote intelligent control functions, enabling remote opening and closing and fault protection, adapting to the needs of modern power grid intelligent operation and maintenance.

5. Easy Installation and Low Maintenance Costs

The equipment has a compact structure and is lightweight, facilitating on-site hoisting and installation, effectively shortening the construction cycle. Its simple internal structure and low failure rate reduce daily maintenance workload, significantly lowering subsequent operation and maintenance costs.

6. Safe Arc Extinguishing and Environmentally Friendly

Utilizing the excellent arc-extinguishing properties of SF6 gas, the equipment features fast arc extinguishing speed and strong breaking capacity, quickly cutting off short-circuit faults. Operation is flameless and emits no harmful gases, ensuring safety, stability, and environmental friendliness, complying with global power safety and environmental standards.

Real-World Engineering Application Case

A 200MW centralized wind power project in Ningxia is located in a high-altitude, wind-blown desert region with large diurnal temperature variations and frequent sandstorms, creating harsh operating conditions and extremely high requirements for equipment stability. The project selected Usune LW36-126kV Outdoor SF6 circuit breaker in batches, along with a "one unit, one transformer" power distribution scheme. After 48 hours of grid connection commissioning and over a year of routine operation, the equipment effectively withstands extreme weather conditions such as strong winds, sandstorms, and low temperatures. It operates with zero faults and stable short-circuit breaking response, ensuring safe grid connection and stable power transmission for wind power equipment and solving operational challenges in high-altitude desert environments.

FAQ

Q1: What extreme operating conditions is the Usune LW36 Outdoor SF6 circuit breaker suitable for?

A1: This product is specifically developed for harsh outdoor environments and can operate stably in extreme temperature ranges from -40℃ to +45℃. It is suitable for various complex scenarios such as high-altitude low-voltage environments, coastal salt spray, desert sandstorms, and humid and rainy mountainous areas. The entire unit is waterproof, dustproof, corrosion-resistant, and aging-resistant, able to withstand extreme weather and complex environmental interference, and suitable for most outdoor power distribution scenarios.

Q2: What are the advantages of SF6 circuit breakers compared to ordinary outdoor vacuum circuit breakers?

A2: Compared to ordinary outdoor vacuum circuit breakers, the LW36 series uses SF6 gas as the arc-extinguishing insulation medium, resulting in faster arc extinguishing speed, stronger short-circuit breaking capacity, and better suitability for high-voltage conditions above 35kV. The equipment operates without open flames or harmful emissions, offering superior safety and environmental friendliness. It also boasts superior sealing and aging resistance, requiring less routine maintenance and offering a longer service life, demonstrating significant advantages in long-term outdoor operation under harsh conditions.

Q3: Does the Outdoor SF6 Circuit Breaker support customized functions and remote intelligent control?

A3: Yes. The product comes standard with both manual and electric operating mechanisms and can be customized and upgraded according to project needs, enabling remote intelligent control, signal feedback, automatic fault alarms, and other functions, compatible with modern power grid intelligent operation and maintenance systems. Furthermore, voltage specifications, supporting structures, and installation methods can be customized according to site conditions to meet the diverse needs of various projects.