Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)
- 2004.07c
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- Pages.1679-1681
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- 2004
Electrical characteristics of class-F groundwall insulation tapes for stator windings
고정자 권선용 F종 주절연 테이프의 전기적 특성
- Kim, Tae-Hee (R & D Center, Doosan Heavy Industries & Construction Co., Ltd.) ;
- Kang, Myung-Guk (Turbine Generator BG, Doosan Heavy Industries & Construction Co., Ltd.) ;
- Lee, Jai-Kwun (Turbine Generator BG, Doosan Heavy Industries & Construction Co., Ltd.) ;
- Son, Sam-Young (Turbine Generator BG, Doosan Heavy Industries & Construction Co., Ltd.)
- Published : 2004.07.14
Abstract
Class-F and B resin-rich type insulating tapes are generally used for the ground wall insulations of respective air-cooled and water-cooled stator windings in larger turbine generators. In this paper, their electrical properties coupled with aging times in higher temperature than designed one in normal condition were experimentally investigated and the results of two comparative tests were presented on the existing class-F resin-rich type tape and a developed one after curing. The resin-rich tapes currently used arc composed of six and a half 3-layer sheets that arc structured with mica paper, the top and bottom supports of it respectively, and the epoxy resin to bind them tightly. The results for breakdown voltage and strength on the cured specimens were presented, which were composed of the unaged, the aged accelerated for one, two, and three thousand hours at 180
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