Portable transformer DC resistance tester

The utility model relates to the technical field of transformer direct-current resistance testers, in particular to a portable transformer direct-current resistance tester which comprises a protective shell, transmission structures are arranged on the two sides of an inner cavity of the protective shell, and connecting plates are arranged on the opposite sides of the two transmission structures. A transformer direct current resistance tester is arranged on the opposite sides of the two connecting plates, a protective top plate is arranged on the top of the transmission structure, the surface of the protective top plate makes contact with the protective shell, the transmission structure comprises a fixing plate fixedly connected with the protective shell, and motors are installed on the opposite sides of the two connecting plates. Compared with the prior art, the instrument has the advantage of automatic opening and closing, in the actual use process, the instrument can be protected through the arranged protec