Multipoint earthing trouble shooting equipment for substation voltage transformer secondary circuit

The invention discloses multipoint earthing trouble shooting equipment for a substation voltage transformer secondary circuit. The multipoint earthing trouble shooting equipment comprises a processor, a display module and at least one pincerlike current transformer. The output end of the pincerlike current transformer is sequentially connected with a signal processing circuit and an analog-digital converter, the output end of the analog-digital converter is connected with a first input end of the processor, and a first output end of the processor is connected with the input end of the display module. According to the multipoint earthing trouble shooting equipment, specific positions where multipoint earthing faults occur in the substation voltage transformer secondary circuit can be quickly and accurately found out, thus a safe and effective finding means for multipoint earthing faults in the voltage transformer secondary circuit can be provided for multiple power generation and power supply enterprises, and safety and stability of an electric system are greatly improved. The multipoint earthing trouble shooting equipment is widely used for the field of fault detection of direct current systems.