Power supply detection system for electric power secondary equipment

The utility model discloses a power supply detection system for electric power secondary equipment, which is characterized in that a control port of an MCU transmits a relay control signal output by the MCU to a relay through a control loop, and the relay acts to control a controllable resistance power loop to generate different powers; the relay accesses a relay reverse correction signal to a control port of the MCU through a reverse correction loop and transmits the relay reverse correction signal to the MCU; the voltage and current sampling loop collects the voltage and current of the power supply to be tested connected to the controllable resistance power loop, and sends the voltage and current to a sampling port of the MCU; and the upper computer communicates with the MCU through a communication loop (7). The power supply detection system has the advantages that detection of different powers of the same power supply and power supply detection of different power secondary devices can be realized. 本实用新型公开了