The Outdoor High-Voltage SF6 Circuit Breaker is a key component in modern electrical transmission and distribution systems. Designed for outdoor installations, it uses sulfur hexafluoride (SF6) gas for insulation and arc quenching. SF6 circuit breakers are known for their high reliability and efficiency in interrupting fault currents in high-voltage networks. These circuit breakers are widely used in substations and power plants to safeguard critical electrical equipment and ensure uninterrupted power supply.
Advantages
Effective Fault Interruption
SF6 gas has superior dielectric and arc-quenching properties, ensuring efficient interruption of high-voltage faults.Quick operation minimizes downtime and prevents further damage to the electrical network.
Durable and Reliable
The outdoor SF6 circuit breaker is built to withstand tough environmental conditions, such as temperature fluctuations, humidity, and pollution.Its robust construction ensures long-lasting performance with minimal maintenance requirements.
Low Maintenance
The self-contained design of the SF6 circuit breaker reduces the need for frequent inspections and maintenance.It is less prone to mechanical wear due to the non-oxidizing properties of SF6 gas.
Features
High-Voltage Capability
This circuit breaker is designed to operate in high-voltage environments, making it suitable for substations and high-capacity power transmission lines.It can handle voltages ranging from tens of kilovolts to several hundred kilovolts, ensuring safe and reliable operation.
Compact Design
The circuit breaker’s compact and space-saving design makes it suitable for installations where space is limited, such as outdoor substations or distribution points.Despite its compactness, it does not compromise on performance or reliability.
Environmentally Safe
SF6 gas is an effective insulator and does not pose a significant environmental risk when used in controlled conditions.The sealed enclosure prevents leakage, making it a safe and sustainable choice for outdoor use.
Altitude: s1000m
Ambient Air Temperature: s+60°C and 2-40°℃
Air Relative Humidity: ≤90% in indoor locations (at +30°℃)
Environment without conductive dust
Absence of corrosive gases that can damage metal and insulation
No severe vibrations or impacts
No combustion and explosion hazards environments
| Item | Unit | Data |
| Rated Voltage | kV | 126 |
| Rated Short-Circuit Breaking Current | kA | 31.5/40 |
| Rated Short-Circuit Closing Current | kA | 80//100 |
| Rated Short-Time Power Frequency Withstand Voltage | kV | Ground: 230, Break: 230+73 |
| Rated Lightning Impulse Withstand Voltage | kV | Ground: 550, Break: 550+103 |
| Rated Short-Circuit Duration | S | 4 |
| Rated Out-of-Step Breaking Current | kA | 8/10 |
| Near-Zone Fault Breaking Current | kA | 36/30 |
| Rated Line Charging Opening/Closing Current | kA | 31.5 |
| Rated Operating Sequence | 0-0.3s-CO-180s-CO | |
| SF6 Gas Pressure (Ambient Temperature: 20°C) | Mpa | 0.6 |
| Mechanical Life | Times | 6000 |
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