Spare power automatic switching device uninterrupted power verification device, spare power automatic switching device and spare power automatic switching method

The invention discloses a spare power automatic switching device uninterruptible calibration device, a spare power automatic switching device and a spare power automatic switching method. The spare power automatic switching device uninterruptible calibration device comprises a three-phase voltage source connected with a bus and a single-phase voltage source connected with an inlet wire, a resistoris connected in series between the single-phase voltage source and the current inlet of the inlet wire; a normally-closed contact of the incoming circuit breaker is connected with a switching-on button, and a normally-open contact of the incoming circuit breaker is connected with a switching-off button. A voltage source and a current source are added on a bus and an incoming line, and an incomingline circuit breaker on the incoming line is automatically controlled, so that uninterrupted power verification of the spare power automatic switching device is realized. 本公开公开的一种备自投装置不停电校验装置、备自投装置和方法，包括：与母线连接的三相电压源，与进线连接的单相电