| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for detecting a trouble with a sufficient trouble detecting sensitivity and an economical facility constitution in a capacitor device constituting by commonly connecting at neutral points three or more sets of capacitor groups obtained by commonly wiring a plurality of capacitors as prescribed at neutral points. SOLUTION: In order to detect a trouble of the capacitor device constituted by commonly connecting at neutral points three or more sets of capacitor groups obtained by commonly wiring a plurality of capacitors as prescribed at neutral points, neutral point currents Imf, Img, Imh of the groups 9, 10, 11 are individually detected at each of neutral points Mf, Mg, Mh leading parts of all the groups. And, a trouble is detected from the detected currents Imf, Img, Imh. |
