A.C. Breakdown Properties and Solidification States of Solidified Alcohol Aqueous Solutions
-
- Tsuchiya Ryohei
- Faculty of Science & Technology, Meijo University
-
- Muramoto Yuji
- Faculty of Science & Technology, Meijo University
-
- Shimizu Noriyuki
- Faculty of Science & Technology, Meijo University
Bibliographic Information
- Other Title
-
- 固化アルコール水溶液の交流絶縁破壊特性と固化状態
- コカ アルコール スイヨウエキ ノ コウリュウ ゼツエン ハカイ トクセイ ト コカ ジョウタイ
Search this article
Abstract
Electrical insulation system using ice at cryogenic temperature has been studied. Ice has excellent electrical breakdown strength at cryogenic temperature. However, electrical weak points such as voids or cracks are easily formed in ice. Therefore, we tried to suppress the formation of voids or cracks by mixture of alcohol. In this paper, A.C. breakdown voltages of ethylene glycol, 1,3-propanediol, propylene glycol or glycerin of solidified aqueous solutions were observed. The following results were obtained. (1) In many cases, the A.C. breakdown voltages of these solidified alcohol aqueous solutions were higher than that of ice. Average breakdown voltage of ethylene glycol shows the highest value among the tested solutions. It is 1.8 times higher than average value of ice. (2) In order to obtain high breakdown properties, it is necessary to adjust alcohol molar fraction so that solidification goes through sherbet like matter. (3) A.C. breakdown voltages of solidified aqueous solutions have very large dispersion. The breakdown voltage of solidified aqueous solution is clarified to be depending on the solidification state. (4) The solidification state of aqueous solution varies with alcohol concentration, cooling rate and cooling time.
Journal
-
- IEEJ Transactions on Fundamentals and Materials
-
IEEJ Transactions on Fundamentals and Materials 136 (1), 54-63, 2016
The Institute of Electrical Engineers of Japan
- Tweet
Details 詳細情報について
-
- CRID
- 1390282679576567680
-
- NII Article ID
- 130005116425
-
- NII Book ID
- AN10136312
-
- ISSN
- 13475533
- 03854205
-
- NDL BIB ID
- 027043330
-
- Text Lang
- ja
-
- Data Source
-
- JaLC
- NDL
- Crossref
- CiNii Articles
-
- Abstract License Flag
- Disallowed