The transmission and transformation of electricity system is used to install major components of a power substation such as phase buses, circuit breakers, disconnecting switches, earthing switches, converters, transformers, and lightening arresters into ground connected metal containers, and then filled with SF6 gas which has excellent insulation and extinction characteristics.

The system is a protected switchgear apparatus used in power substations, switching stations, and power receiving plants. The system adopts an enclosure ground connection method to prevent electrification through leaked electricity, and can also prevent accidents during inspections and repairs since it does not have operation links. The system is eco-friendly since it is equipped with low-noise devices, increasing its compatibility with its surrounding environment.