| 摘要 |
<P>PROBLEM TO BE SOLVED: To detect an unequal share ratio of a load by each uninterruptible power supply device when one uninterruptible power supply is connected in parallel to other uninterruptible power supplies. <P>SOLUTION: A detection means 21 of the uninterruptible power supply device 1 detects an output current that is outputted to a load apparatus 33. A communication means 23, which is connected to other uninterruptible power supplies 1 that are connected in parallel to the uninterruptible power supply device 1 against the load apparatus 33, transmits detection data of an output current detected by the detection means 21 as either one of level values of a given 'n' (the 'n' is a natural number of 1 or larger) stage level to other uninterruptible power supply devices 1 and receives the detection data of output currents transmitted by other uninterruptible power supply devices 1. A judgment means 24 determines the inequality of a plurality of the output currents based on the detection data of its own output current detected by the detection means 21 and the detection data of the output currents of other uninterruptible power supply devices 1 received by the communication means 23. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
