With the gradual improvement of voltage levels in domestic substations, the usage of SF ₆ high-voltage circuit breakers in the power sector is currently growing at a rate of about 15% per year. In the fields of high voltage, ultra-high voltage, and extra high voltage switches, SF ₆ gas has almost become the only insulation and arc extinguishing medium. However, SF ₆ high-voltage switches are mostly installed indoors, and the air flow is relatively slow. Once SF ₆ gas leaks, it is easy to cause local oxygen deficiency, resulting in suffocation of workers due to oxygen...

With the gradual improvement of voltage levels in domestic substations, the usage of SF ₆ high-voltage circuit breakers in the power sector is currently growing at a rate of about 15% per year. In the fields of high voltage, ultra-high voltage, and extra high voltage switches, SF ₆ gas has almost become the only insulation and arc extinguishing medium. However, SF ₆ high-voltage switches are mostly installed indoors, and the air flow is relatively slow. Once SF ₆ gas leaks, it is easy to cause local oxygen deficiency, resulting in suffocation of workers due to oxygen...

With the gradual improvement of voltage levels in domestic substations, the usage of SF ₆ high-voltage circuit breakers in the power sector is currently growing at a rate of about 15% per year. In the fields of high voltage, ultra-high voltage, and extra high voltage switches, SF ₆ gas has almost become the only insulation and arc extinguishing medium. However, SF ₆ high-voltage switches are mostly installed indoors, and the air flow is relatively slow. Once SF ₆ gas leaks, it is easy to cause local oxygen deficiency, resulting in suffocation of workers due to oxygen...