Why Can't Compressed Air Be Used To Blow Away The White Powdery Decomposition Material Inside The Container During The Disassembly Of The Sf6 Circuit Breaker Operating Mechanism?

During the inspection and disassembly of sf6 circuit breaker operating mechanism, if white powdery decomposition products are found inside the container, never use compressed air to blow them away. The white powder is usually a solid metal fluoride product formed when SF6 gas reacts with metal components under conditions of electric arcing or partial discharge. These fine particles are easily stirred up, and using compressed air will cause them to escape into the operating environment instead of being controlled and recovered.

Once the white powder disperses, operators may inhale or come into contact with these particles. The solid decomposition products are a grayish-white powder of metal fluorides, which can cause health risks such as irritation and respiratory damage upon skin contact or inhalation. Blowing with compressed air may cause the powder to enter other sensitive areas of sf6 circuit breaker spring mechanism or further contaminate the internal structure, thereby masking potential insulation defects or arcing traces.