| 摘要 |
A change operation method of a distribution transformer using uninterruptible power supply difference of generator for transformer uninterruptible replacement is provided to perfectly perform transformer change operation by continuously supplying a stable power source. An input terminal and an output terminal of a UPS are connected through a By-Pass circuit directly. A line of a transformer secondary side is connected with a cable which is drawn out from the UPS. The cable drawn from the UPS output terminal is connected with a low voltage cable. The transformer line of Each phase(A, B, C, N) is disconnected with a connection part of the low voltage cable. A UPS main circuit is comprised of an input terminal, a converter, an inverter, and output terminal. A change operation method comprises the following steps: a step for opening a first switch of a transformer; a step for connecting an input power source of the UPS converter with a generator(13) by using SW1; a step for separating the cable of the UPS input terminal side from the secondary line(7); and a step for changing the transformer. |
