Power automatic switching unit for communication base station

The utility model discloses a power automatic switching unit for communication base station, which integrates microelectronic technique, digital technique, computer technique, industrial automatic control, communication technique and power machinery technique. The power automatic switching unit comprises a commercial power supply, a generator unit, an intelligent monitoring control panel, a dual-power transfer switch and an air switch, wherein the intelligent monitoring control panel is respectively connected with the generator unit, the commercial power supply and the dual-power transfer switch through signal wires for detecting the commercial power supply and the generator unit and controlling operation of the dual-power transfer switch, three terminals of the dual-power transfer switch are respectively connected with one end of the air switch, the commercial power supply and the generator unit through cables for switching between the commercial power supply and the generator unit, and the other end of the air switch is connected with a load through a cable. The power automatic switching unit can automatically switch to a standby generator unit providing power to the specified load while the external power for the communication system is lost, thereby guaranteeing the load executing corresponding functions.