| 摘要 |
PROBLEM TO BE SOLVED: To resolve the problem of the conventional power sources, such as the functional stoppage of a battery during test causing interruption of power supply to an inverter and load. SOLUTION: The system to test a battery in this uninterruptible power source includes a plurality of inverters, each of which has capacity of being connected to a power source; and a plurality of primary windings on a transformer, to corresponding one of which each of the inverters is connected, and the transformer has common secondary output, and each of the inverters has capacity of generating corresponding effective voltage at the common secondary output, in a magnitude different from those of other effective voltages, according to the priority of voltage levels. |
