Station transformer low-voltage side no-load impact test device with time-delay protection function

The utility model discloses a substation transformer low-voltage side no-load impact test device with a time-delay protection function, which comprises a box body and an internal electrical loop, the internal electrical loop comprises a main loop and a time-delay control loop, the main loop is connected with a substation transformer low-voltage inlet wire switch and a low-voltage alternating current power supply, and the time-delay control loop is connected with the substation transformer low-voltage inlet wire switch. The time-delay control loop is connected with the A phase and the N phase of the low-voltage alternating current power supply, the time-delay control loop controls the time-delay conduction of the main loop through the time-delay relay, and an external test wiring and an operation interface are reserved in the box body. The beneficial effects of the utility model are that: have the time-delay protection function, can effectively protect the personal safety if the used transformer is abnormal in