Analysis Of The Impact Of Sf6 Gas Encountering Free Electrons On The Operating Mechanism Of Sf6 Circuit Breakers

SF6 gas is widely used in power equipment, playing a crucial role, especially in circuit breakers. It possesses not only excellent insulation properties but also good arc-extinguishing characteristics. In SF6 circuit breakers, the normal operation of sf6 circuit breaker operating mechanism depends on the stability of the gas. When free electrons encounter SF6 gas molecules, a series of physical reactions may occur, affecting the circuit breaker's operating efficiency and stability.

When high-energy free electrons collide with SF6 gas, they may trigger molecular dissociation reactions, generating new ions and free radicals. These reactions alter the properties of SF6 gas, leading to a decrease in its electrical insulation capacity. Especially under high voltage conditions, sf6 circuit breaker spring mechanism may be affected, causing the arc extinguishing effect of the circuit breaker to be less than expected, or even unable to effectively cut off the current.

Simultaneously, the excitation and dissociation of molecules in SF6 gas also increase the electron density in the gas, adversely affecting the current conduction and control of the operating mechanism. High electron concentrations can not only degrade the gas's electrical properties but also cause overheating and damage to electronic components within the operating mechanism. Under such circumstances, the operating mechanism may lose its accurate control capability, thereby reducing the operational reliability of the equipment.