Title:
OIL-FILLED ELECTRIC DEVICE
Document Type and Number:
WIPO Patent Application WO/2010/035336
Kind Code:
A1
Abstract:
Provided is an oil-immersed electric device such as an oil-immersed transformer, which can detect the copper sulfate precipitated on coil insulating paper. In the oil-immersed electric device, a coil having a surface covered with the insulating paper is arranged in a container filled with insulating oil. A detecting member is prepared by mounting two electrodes on the surface of a plate-shaped press board made of cellulose of the same material as that of the insulating paper. The detecting member is disposed in contact with the insulating oil so that the production of the copper sulfate is detected in terms of the drop of the surface resistance between the electrodes. Moreover, the temperature of the detecting member is set higher than the coil temperature so that the copper sulfate may be produced earlier than the coil portion.
Inventors:
NAGAO, Eiichi (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 10083, JP)
永尾 栄一 (〒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)
TANINOUCHI, Kentaro (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 10083, JP)
谷ノ内 健太郎 (〒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)
HOSOKAWA, Noboru (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 10083, JP)
細川 登 (〒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)
AMIMOTO, Tsuyoshi (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 10083, JP)
網本 剛 (〒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)
永尾 栄一 (〒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)
TANINOUCHI, Kentaro (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 10083, JP)
谷ノ内 健太郎 (〒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)
HOSOKAWA, Noboru (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 10083, JP)
細川 登 (〒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)
AMIMOTO, Tsuyoshi (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 10083, JP)
網本 剛 (〒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)
Application Number:
JP2008/067536
Publication Date:
April 01, 2010
Filing Date:
September 26, 2008
Export Citation:
Assignee:
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)
NAGAO, Eiichi (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 10083, JP)
永尾 栄一 (〒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)
TANINOUCHI, Kentaro (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 10083, JP)
谷ノ内 健太郎 (〒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)
HOSOKAWA, Noboru (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 10083, JP)
細川 登 (〒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)
AMIMOTO, Tsuyoshi (7-3 Marunouchi 2-chome, Chiyoda-k, 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)
NAGAO, Eiichi (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 10083, JP)
永尾 栄一 (〒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)
TANINOUCHI, Kentaro (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 10083, JP)
谷ノ内 健太郎 (〒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)
HOSOKAWA, Noboru (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 10083, JP)
細川 登 (〒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)
AMIMOTO, Tsuyoshi (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 10083, JP)
International Classes:
H01F27/00; G01N27/04; H01F41/00
Attorney, Agent or Firm:
SAKAI, Hiroaki (Sakai International Patent Office, Kasumigaseki Building2-5, Kasumigaseki 3-chome,Chiyoda-k, Tokyo 20, 10060, JP)
Download PDF:
Previous Patent: TEST PART UNIT AND TEST HEAD
Next Patent: ORGANIC EL DEVICE AND METHOD FOR MANUFACTURING SAME
Next Patent: ORGANIC EL DEVICE AND METHOD FOR MANUFACTURING SAME