Zero-sequence current secondary circuit live detection device

The utility model discloses a zero-sequence current secondary circuit live detection device, which comprises a processor module, a high-frequency current generation module, a current acquisition module, a zero-sequence current transformer, a communication alarm module, a man-machine interaction module and a power supply module, the processor is in communication connection with the high-frequency current generation module, the current acquisition module, the communication alarm module and the man-machine interaction module, the high-frequency current generation module generates high-frequency current to the zero-sequence current transformer, and the current acquisition module receives zero-sequence current sent by the zero-sequence current transformer; the power supply module supplies power to all the modules except the zero sequence current transformer. The beneficial effects of the utility model are that the device does not need to disconnect a secondary circuit of a mutual inductor in operation and connect