고정자 권선용 F종 주절연 테이프의 전기적 특성

Electrical characteristics of class-F groundwall insulation tapes for stator windings

  • 김태희 (두산중공업(주) 기술연구원) ;
  • 강명국 (두산중공업(주) 터빈발전기BG) ;
  • 이재권 (두산중공업(주) 터빈발전기BG) ;
  • 손삼용 (두산중공업(주) 터빈발전기BG)
  • 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.)
  • 발행 : 2004.07.14

초록

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 $^{\circ}C$. The surface and volume resistivities on them were measured and the results are also presented to make a comparative test for the initial electrical characteristics.

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