Secondary voltage drop detection device for voltage transformer

The utility model relates to a secondary voltage drop detection device for a voltage transformer. The device comprises a voltage transformer, a secondary voltage drop tester and an electric energy meter. The three-phase terminals of the voltage transformer are respectively connected with the three-phase terminals of the electric energy meter; and the three-phase terminals of the voltage transformer and the three-phase terminals of the electric energy meter are respectively connected with the standard end and the measured end of the secondary voltage drop tester. Compared with the prior art, the secondary voltage reducing detection device for the voltage transformer provided by the utility model has the advantages of simple structure, low cost and the like.