Title:
METHOD FOR DIAGNOSING DEGRADATION OF SHIELD BODY FOR CONSERVATOR
Document Type and Number:
Japanese Patent JP2015005680
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a method for diagnosing a degradation state of a shield body for a conservator before a shield body used for the conservator is degraded and a crack and a perforation are generated in oil-filled electrical equipment having the conservator including the shield body (a resin bag or film having high air tightness, oil resistance, and elasticity) for shielding insulation oil from atmosphere.SOLUTION: In oil-filled electrical equipment having a conservator including a shield body for shielding insulation oil from atmosphere, a degradation state of the shield body for the conservator is diagnosed by measuring density or quantity at which a plasticizer contained in the shield body used for the conservator is eluted in the insulation oil.
More Like This:
Inventors:
MIYAJIMA KIWAMU
Application Number:
JP2013131270A
Publication Date:
January 08, 2015
Filing Date:
June 24, 2013
Export Citation:
Assignee:
AICHI ELECTRIC CO LTD
International Classes:
H01F27/14
Domestic Patent References:
| JPH04158504A | 1992-06-01 | |||
| JPH07263243A | 1995-10-13 | |||
| JP2009224578A | 2009-10-01 |
Other References:
宮島極、水野康宏、吉田覚、太田秀希、杉本敏文、伊藤保則: "コンサベータ隔膜破損の診断法の研究", 愛知電機技報, vol. No.26, JPN7017001153, 2005, pages 17 - 21
Previous Patent: SWITCHING ELEMENT AND PROGRAMMING METHOD THEREFOR
Next Patent: SEMICONDUCTOR DEVICE AND METHOD OF MANUFACTURING THE SAME
Next Patent: SEMICONDUCTOR DEVICE AND METHOD OF MANUFACTURING THE SAME