Kync inflatable cabinet produced by Keiyip company is suitable for 12kV power transmission and distribution system, which is a new type of switchgear to realize the functions of control, protection, measurement, monitoring and communication. It is especially suitable for occasions with small distribution facilities, high reliability requirements and relatively bad natural environment and conditions such as underground, Plateau and coastal areas. At present, it is mainly used in areas with high reliability requirements, industrial and mining enterprises and substations, Metro, light rail and other substations with tight land and limited space.