Prerequisites For Cleaning Metal Components Of Sf6 Circuit Breaker Operating Mechanism

Before cleaning unit sf6 circuit breaker operating mechanism, the circuit breaker operating power should be disconnected to release residual spring energy. Internal SF6 gas should be recovered using a dedicated recovery device, followed by evacuation using a vacuum pump to reduce the internal pressure to an extremely low level.

Before cleaning unit sf6 circuit breaker spring mechanism, high-purity nitrogen (≥99.99% purity) should be introduced, followed by two nitrogen scrubbing and venting operations to minimize the concentration of residual SF6 gas and potential decomposition products.

The working environment must be kept dry and well-ventilated, with relative humidity below 80%. Maintenance personnel should wear protective clothing, respirators, goggles, and latex gloves. Smoking is strictly prohibited during operations, and hands and face should be thoroughly washed during breaks.