Intelligent outdoor opening and closing station (outdoor ring network cabinet), 12Kv switchgear, circuit breaker, load switch, current and voltage transformer, 12KV power supply PT, FTU, RTU, communication control terminal (CCU), 12KV metering and Automatic meter reading, USO power supply and indicating instruments are installed and debugged into a removable, sealed, moisture-proof stainless steel case. Thereby achieving the integration of the primary and secondary systems in the urban switching network, the replacement of the assembly, shortening the construction period and improving the reliability of the grid operation.