| 摘要 |
PROBLEM TO BE SOLVED: To provide an uninterruptible power-supply system capable of flexibly adapting to the construction and change of the system.SOLUTION: An uninterruptible power-supply system comprises: uninterruptible power-supply devices U1 and U2 of a model A and an uninterruptible power-supply device U23 of a model C that are connected in parallel to a load 5; and signal conversion circuits 11 and 12 that convert a parallel control signal &phgr;A of a signal form for the model A into a parallel control signal &phgr;C of a signal form for the model C, and convert the parallel control signal &phgr;C into the parallel control signal &phgr;A. For example, an uninterruptible power-supply device U3 of the model A that have broken down can be replaced with the uninterruptible power-supply device 23 of the different model C. |
