Secondary alternating current and test power supply panel

The utility model discloses a secondary alternating current and test power supply screen which comprises a screen body, a first opening is arranged on the front side wall of the screen body in a penetrating mode, a front door is installed at the first opening and larger than the first opening, a second opening is arranged on the rear side wall of the screen body, and a rear door is installed at the second opening and larger than the second opening. The outer edges of the first opening and the second opening are fixedly connected with water guide edges, sealing strips are arranged on the water guide edges, the sides, away from the water guide edges, of the sealing strips abut against the front door and the rear door respectively, a plurality of ventilation openings are formed in the rear door in a penetrating mode, filter plate assemblies are fixedly installed on the ventilation openings, a dehumidification assembly is fixedly installed in the screen body, and the side wall of the screen body is externally coa