Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)

The Korean Institute of Electrical Engineers (대한전기학회)
권호 표지

Estimation of Dielectric Strength in High Voltage Motor Stator Windings for Circulating Water Pump

순환수 펌프용 고압전동기 고정자 권선의 절연내력 평가

  • Kim, Hee-Dong (Korea Electric Power Corporation(KEPCO) Research Institute) ;
  • Kong, Tae-Sik (Korea Electric Power Corporation(KEPCO) Research Institute) ;
  • Park, Tae-Sung (Korea Electric Power Corporation(KEPCO) Research Institute)
  • Published : 2015.07.15
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Abstract

To assess the deterioration condition of stator insulation, diagnostic and overpotential tests were performed on two high voltage(HV) motors for circulating water pump (CWP). Following the long term rewinding program, the diagnostic test was performed on two motors during the planning maintenance period. After completing the diagnostic test, overpotential test was done on the stator windings of HV motors. During the overpotential test, the No. 1 and No. 2 of HV motors failed at 8.8 kV and 7.9 kV, respectively. Stator windings of two HV motors had deteriorated significantly.

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