Intelligent substation relay protection tester with external protection structure

The utility model discloses an intelligent transformer station relay protection tester with an external protection structure, comprising a tester main body, the upper end of the tester main body is provided with a top cover plate, the front end surface of the top cover plate is provided with a test interface, and the front end of the test interface is connected with a dustproof cover through a hinge. Ventilation boxes are installed on the surfaces of the two sides of the tester body, driving motors are installed in the ventilation boxes, the output ends of the driving motors are connected with cooling fans through rotating shafts, insulating rubber rings are embedded in the inner wall of the tester body, and a drawing storage cabinet is installed in the tester body. A supporting bottom frame is installed at the bottom of the tester body, damping supporting columns are installed between the supporting bottom frame and the tester body, and spring assemblies are installed on the surfaces of the damping supportin