The utility model discloses a three-phase combined
transformer, and relates to the technical field of transformers, the three-phase combined
transformer comprises a base, a low-
voltage wire outlet device, a neutral point wire outlet device and three single-phase transformers, the low-
voltage wire outlet device is provided with three low-
voltage bushings; the neutral point wire outlet device is provided with a neutral point sleeve; each single-phase
transformer comprises an
oil tank, the three single-phase transformers are installed on the base at intervals in the second horizontal direction, the tank walls of the two opposite sides of each
oil tank in the first horizontal direction are provided with a high-voltage outgoing line interface and a neutral point outgoing line interface respectively, and the top tank wall of each
oil tank is provided with a low-voltage outgoing line interface. The high-voltage outgoing line interfaces, the neutral point outgoing line interfaces and the low-voltage outgoing line interfaces of the single-phase transformers do not interfere with one another and do not affect interval arrangement of the three single-phase transformers, the line crossing situation during outgoing of the three-phase combined transformer is reduced, wiring is simple, the three-phase combined transformer is more compact in structure and reasonable in
layout, and the occupied area is effectively saved.