On-line detection device for conducting state of grounding downlead of power transformation equipment

The utility model discloses a power transformation equipment grounding down lead conduction state on-line detection device, which comprises a fixed acquisition unit, a data acquisition control unit and an upper computer, the fixed acquisition unit is composed of a constant current power supply and a voltage measuring device, one end of the fixed acquisition unit is connected with a reference point R1 through a relay K1 and a secondary cable, and the other end of the fixed acquisition unit is connected with a power supply. The other end of the fixed acquisition unit is respectively connected with the test points R3-R11 through relays K2-K6 and corresponding secondary cables, one end of the data acquisition control unit is connected with the fixed acquisition unit, and the other end of the data acquisition control unit is connected with the upper computer. According to the utility model, the efficiency of testing the conduction state of the grounding downlead of the power transformation equipment is improved, t