APPARATUS AND METHOD FOR ANALYZING THE STATE OF OIL-FILLED ELECTRICAL DEVICES

WIPO Patent Application WO/2010/116931

A1

Provided is an apparatus for analyzing the state of oil-filled electrical devices. Said apparatus simulates the state of an oil-filled electrical device (1) in which copper wire wrapped in insulating paper is immersed in insulating oil (55). The apparatus for analyzing the state of oil-filled electrical devices is provided with: a first paper-covered copper wire (5A) and a second paper-covered copper wire (5B), which are adjacent to each other; a tank (3) which holds the first and second paper-covered copper wires (5A, 5B) as well as insulating oil (55) extracted from the oil-filled electrical device (1), thereby immersing the first and second paper-covered copper wires (5A, 5B) in the insulating oil (55); and a capacitance measurement unit (8) which measures the capacitance between the first and second paper-covered copper wires (5A, 5B). The first and second paper-covered copper wires (5A, 5B) comprise copper wire and insulating paper wrapped therearound. The insulating paper wrapper around each copper wire comprises the same material as the insulating paper in the oil-filled electrical device (1).

HOSOKAWA, Noboru (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 〒1008310, JP)

JP2010/055813

October 14, 2010

March 31, 2010

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MITSUBISHI ELECTRIC CORPORATION (7-3 Marunouchi 2-chome, Chiyoda-ku Tokyo, 10, 〒1008310, JP)
三菱電機株式会社 (〒10 東京都千代田区丸の内二丁目７番３号 Tokyo, 〒1008310, JP)

H01F27/00; H01F41/00

FUKAMI, Hisao et al. (Fukami Patent Office, p.c., Nakanoshima Central Tower,,2-7, Nakanoshima 2-chome, Kita-ku, Osaka-shi, Osaka 05, 〒5300005, JP)

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