METHOD FOR PREDICTING THE PROBABILITY OF ABNORMALITY OCCURRENCE IN OIL-FILLED ELECTRICAL APPARATUS

WIPO Patent Application WO/2010/073748

A1

A method for predicting the probability of abnormality occurrence in an oil-filled electrical apparatus, which comprises subjecting a sample of insulating oil withdrawn from a transformer in operation to compositional analysis, calculating the estimated concentration of dibenzyl disulfide in the insulating oil in its virgin state from the result of the analysis, and predicting the probability of abnormality occurrence in the oil-filled electrical apparatus on the basis of the level of the estimated concentration.

TOYAMA, Satoru (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 10083, JP)
外山 悟 (〒10 東京都千代田区丸の内二丁目７番３号 三菱電機株式会社内 Tokyo, 10083, JP)
MIZUNO, Kota (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 10083, JP)
水野 康太 (〒10 東京都千代田区丸の内二丁目７番３号 三菱電機株式会社内 Tokyo, 10083, JP)

JP2009/057890

July 01, 2010

April 21, 2009

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MITSUBISHI ELECTRIC CORPORATION (7-3 Marunouchi 2-chome, Chiyoda-ku Tokyo, 10, 10083, 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, 10083, JP)
TOYAMA, Satoru (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 10083, JP)
外山 悟 (〒10 東京都千代田区丸の内二丁目７番３号 三菱電機株式会社内 Tokyo, 10083, JP)
MIZUNO, Kota (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 10083, JP)

H01F27/00; G01N30/88; H01F41/00

FUKAMI, Hisao et al. (Fukami Patent Office, Nakanoshima Central Tower 22nd Floor, 2-7, Nakanoshima 2-chome, Kita-ku, Osaka-sh, Osaka 05, 53000, JP)

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