| 摘要 |
PROBLEM TO BE SOLVED: To facilitate exchange of smoothing capacitors by arranging the smoothing capacitors storing electric power converted into a DC by a converter part as a unit, and detachably installing the smoothing capacitor unit in a box body. SOLUTION: Smoothing capacitors 23 which stores electric power converted to DC by a converter part is made into a unit, and this smoothing capacitor unit 20 is detchably installed in a box body. The box body of a driving apparatus is so constituted that an upper casing and a lower casing are tightly fixed by using screws. The smoothing capacitor unit is exposed by removing screws in a screwing part and taking off the upper casing. When the capacitor unit 20 is exchanged for the maintenance or the like of a pump, the upper casing is removed, and screws 24 of the capacitor unit 20 are removed, thereby enabling easy removal of the capacitor unit 20 from a connection part. |
