The Transactions of the Korean Institute of Electrical Engineers (대한전기학회논문지)

The Korean Institute of Electrical Engineers (대한전기학회)
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Aging Test of 20kVA Amorphous Core Transformer by Loading Back Method

부하반환법에 의한 20KVA 비정질 변압기의 경년열화 연구

  • 민복기 (한전연구소 전기재료공학부) ;
  • 송재성 (한전연구소 전기재료공학부) ;
  • 정영호 (한전기술연구원 배전연구실) ;
  • 임정재 (한국전력공사 전남지사)
  • Published : 1994.02.01
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Abstract

Aging test was done by loading back method for 20kVA amorphous core transformers manufactured by Hyosung Industries Co. and korea Electric Power Corporation. Iron losses, copper losses and insulation oil temperatures of the transfromers was measured for all the testing period. Expected life of amorphous core transformers on the basis of the degradation of the insulators was 46 years at 100% load, and 2.4 years at 130% load. Average temperature rising of transformer oil of amorphous core transformers was higher than that of silicon steel core transformers. Hence lowering the oil temperature by optimized design is needed for improving the expected life of the amorphous transformers.

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