Direct current grounding detection of transformer substation device

The utility model discloses a direct current grounding detection of transformer substation device relates to the transformer substation and overhauls technical field. Including the box direct current air switch inside with being located the box, input module, the output modul, voltmeter module and fixing device, the voltmeter module includes first voltmeter module and second voltmeter module, the input of first voltmeter module is being connected to input module's output, the output of first voltmeter module is connected to direct current air switch, direct current air switch is connected to the input of second voltmeter module, the output of second voltmeter module is connected to on the output module, output module is connecting fixing device, fixing device includes terminal and fastening bolt, be used for the fastening connection test wire. After adopting above -mentioned structure, can look for multiple spot direct current earth fault point fast under the circumstances that protection device does not cut