Simple testing device for grounding resistance of distribution transformer

The invention relates to a testing device, in particular to a simple testing device for the grounding resistance of a distribution transformer. The testing device comprises a wire wheel disc and a simple grounding column. A wire having two stretching ends with conductive chucks is arranged in the wire wheel disc. One end of the wire is connected with the simple grounding column. The simple grounding column is hollow; an opening formed in the top of the inner cavity of the column is a wire access inlet and the bottom of the column is sealed; the simple grounding column has an upper insulation section and a lower conductive section; a protection layer is prepared on the outer surface of the conductive section; a pin hole is formed in the conductive section; a conductive insulation film is arranged in the inner cavity of the conductive section; an adaptive conductive pin and an adaptive conductive base are arranged on the surface of the conductive insulation film; and on end of the conductive pin is fixedly conn