The invention relates to the technical field of
transformer detection, in particular to a portable
distribution transformer temperature rise test
system. The device comprises a test host, a connecting
assembly is installed on the outer surface of the test host, a switching
assembly is arranged at the top of the connecting
assembly, a
communication interface is formed in one side of the switching assembly, three output ports are formed in the back face of the switching assembly, a
bus interface is formed in the other side of the switching assembly, and the
bus interface is connected with the switching assembly. A connecting cable is inserted into the
communication interface, and a
short circuit device is inserted into the other end of the connecting cable. The three low-
voltage ports on the
transformer are connected through the short-circuit device, so that the short-circuit device can be accurately connected to the three low-
voltage ports in a
butt joint mode, connection of the three low-
voltage ports can be more standard, the situation that connection of interfaces is loose or cable connection ports are wrong is avoided, cable arrangement on a
test site can be more standard, and the
test efficiency is improved. And inaccurate test result detection caused by disordered placement of the cables is avoided.