The inflatable ring network cabinet is suitable for 12kV power system, which is mainly used for power supply of ring network, automatic isolation of fault area and line segment in distribution network.Only the upper power distribution automation terminal equipment (FTU/RTU) and communication device are equipped in the ring network cabinet to communicate with the control center of the power distribution automation system, and it can measure the voltage and current of the line and monitor the working state of each switch. The ring network cabinet seals all switch equipment in a closed stainless steel box filled with SF6, and there is no exposed live body outside. It is a fully enclosed and fully insulated switch equipment, which is not affected by the external environment and runs safely and reliably.The ring network cabinet is divided into straight through cabinet, circuit breaker cabinet, load switch cabinet, combination electrical cabinet, contact switch cabinet, metering cabinet and other standard units can be flexibly combined to achieve multiple schemes.