| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide uninterruptible power supply equipment having a standby uninterruptible power supply apparatus and a plurality of uninterruptible power supply apparatuses, which monitors a state between a standby uninterruptible power supply apparatus and a plurality of uninterruptible power supply apparatuses, even if abnormality occurs in the uninterruptible power supply apparatus, most suitably controls an operation of the uninterruptible power supply device, and supplies power to a load by the stable uninterruptible power supply apparatus. <P>SOLUTION: A judging circuit of the arbitrary uninterruptible power supply apparatus except for the apparatus where abnormality occurs originates input from the standby uninterruptible power supply apparatus to a change-over switch, to switch the self-apparatus to a bypass power input-side for occurrence of abnormality which is to occur next. <P>COPYRIGHT: (C)2007,JPO&INPIT</p> |
