1. Classification by Structure
- **Compressed Gas SF6 Circuit Breaker**: Utilizes compressed gas to blow arcs for current interruption.
- **Self-Energy Extinction SF6 Circuit Breaker**: Leverages the arc extinction capabilities of SF6 gas itself, without the need for additional arc-blowing media.
- **Mixed Extinction SF6 Circuit Breaker**: Combines the features of compressed gas and self-energy extinction types.
#### 2. Classification by Voltage Level
- **Low Voltage SF6 Circuit Breaker**: Suitable for low voltage power grids.
- **Medium Voltage SF6 Circuit Breaker**: Suitable for medium voltage power grids.
- **High Voltage SF6 Circuit Breaker**: Suitable for high voltage power grids.
- **Extra High Voltage SF6 Circuit Breaker**: Suitable for extra high voltage power grids.
#### 3. Classification by Operation Method
- **Pneumatic Operated SF6 Circuit Breaker**: Uses compressed air as the operating force.
- **Electric Operated SF6 Circuit Breaker**: Uses an electric motor as the operating force.
- **Spring Operated SF6 Circuit Breaker**: Uses stored spring energy for operation.
### Table
| Classification Method | Category | Description |
| --- | --- | --- |
| Structure Classification | Compressed Gas | Uses compressed gas to blow arcs |
| Structure Classification | Self-Energy Extinction | Uses the arc extinction capabilities of SF6 gas |
| Structure Classification | Mixed Extinction | Combines compressed gas and self-energy extinction features |
| Voltage Level Classification | Low Voltage | Suitable for low voltage power grids |
| Voltage Level Classification | Medium Voltage | Suitable for medium voltage power grids |
| Voltage Level Classification | High Voltage | Suitable for high voltage power grids |
| Voltage Level Classification | Extra High Voltage | Suitable for extra high voltage power grids |
| Operation Method Classification | Pneumatic Operation | Uses compressed air as the operating force |
| Operation Method Classification | Electric Operation | Uses an electric motor as the operating force |
| Operation Method Classification | Spring Operation | Uses stored spring energy for operation |
SF6 circuit breakers are widely used in power systems due to their superior arc extinction performance, compact design, and reliable operation. The selection of an appropriate SF6 circuit breaker requires considering specific power grid requirements, environmental conditions, and operational characteristics.