Withstand voltage test device and withstand voltage test method of transformers

The invention relates to the technical field of transformer testing, in particular to a withstand voltage testing device and a withstand voltage testing method of transformers. The withstand voltage testing device comprises a testing unit, a plurality of conveying units arranged at intervals in the front-back direction and a control unit, wherein the test unit is provided with a plurality of teststations; the control unit is respectively connected with the plurality of conveying units, and the control unit controls the conveying units to convey transformers to be tested to the corresponding test stations for voltage withstanding test or output the tested transformers, and accumulates the test time of the transformers. The plurality of transformers can be placed on the plurality of conveying units, and the control unit controls the conveying units to operate to the test stations of the test units to carry out voltage withstanding tests and can monitor the test time of the transformerson each conveying unit; an