Test load test device for medium-frequency power source and power-frequency power source

The invention relates to a power source load system, in particular to a test load test device for a medium-frequency power source and a power-frequency power source. The test load test device comprises the power-frequency power source, the medium-frequency power source and a load box and is characterized in that a total contact, a medium-frequency power input contact, a power-frequency power input contact, load distribution contacts and connecting copper bars are arranged; the output end of the medium-frequency power source is connected with the medium-frequency power input contact through the corresponding connecting copper bar, the output end of the power-frequency power source is connected with the power-frequency power input contact through the corresponding connecting copper bar, the medium-frequency power input contact and the power-frequency power input contact are respectively connected with the input end of the total contact through the corresponding connecting copper bars, one circuit of the output