| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an auxiliary power supply device that does not require periodical maintenance or inspection and is reliable with respect to operation after a failure occurrence as well. <P>SOLUTION: The auxiliary power supply devices 11, 12 respectively include input-side contactors 31, 32 and output-side contactors 41, 42 and installed in parallel with a load 3. A controller 4 includes two power supply control units 5, 6 and an operation command unit 7 and a control power supply 8 common to them. The power supply control units 5, 6 are respectively constructed of: control command generation units 51, 61 that control the operation of the auxiliary power supply devices 11, 12 and on/off of the contactors 31, 32 and 41, 42; failure information recording units 52, 62 that store failure history when a failure occurs; and operation information recording units 53, 63 that record operation history indicating whether the respective auxiliary power supplies are in operation or on standby. <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
