| 摘要 |
PROBLEM TO BE SOLVED: To provide an uninterruptible power device of which a harmful effect to a load is prevented by quickly self-paralleling off a main circuit unit in which an abnormality occurs, and reliability is improved.SOLUTION: An uninterruptible power device comprises: a first power supply path supplying a power from main circuit units 21, 21to 21parallelly connected to a load 30; and a second power supply path bypass supplying from a DC current 10. For example, the power from main circuit unit 21comprises a rectifier 21and an inverter 21. The uninterruptible power equipment capable of charging an accumulation battery 23 by outputting the rectifier 21, further comprises: a main controller 22 for controlling switching of first and second poser supply paths and the power from main circuit unit 21; and a local controller 21for receiving a driving signal from the main controller 22 and driving the inverter 21, and having a function for detecting an abnormal state of a self unit 21and self-paralleling off from the first power supply path.SELECTED DRAWING: Figure 1 |
