Alternating current grounding detection device applied to twelve-pulse charger

The utility model relates to the technical field of alternating-current grounding detection devices, discloses an alternating-current grounding detection device applied to a twelve-pulse charger, and solves the problem that a lead joint is easily separated from a plugging port due to poor fixing effect of the conventional alternating-current grounding resistance tester on the lead joint. An alternating-current grounding detection device applied to a twelve-pulse charger comprises a shell body, a rotating cover, a detection part, a lock catch and a plug-in interface, a fixing assembly is arranged at the upper end of the shell body, a storage assembly is arranged on one side of the rotating cover, and a movable groove is formed in the upper end of the shell body. The wiring fixing assembly comprises a first clamping part, a second clamping part and a wire part embedded in the upper end of the plugging port, through the arrangement of a movable groove, the first clamping part, the second clamping part and the wi