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Insulation Breakdown Frequency Properties of PAI Enamelled Rectangular Coils According to Thermal Deterioration Temperature Variation

열적 열화 온도 변화에 따른 PAI 에나멜 각형코일의 절연 파괴 주파수 특성

  • Park, Jae-Jun (Department of Electrical Electronic Engineering, Joongbu University)
  • 박재준 (중부대학교 전기전자공학과)
  • Received : 2016.10.12
  • Accepted : 2016.11.19
  • Published : 2016.12.01

Abstract

Coil specimens were prepared by continuous coating on a copper wire with flexible PAI (polyamideimide) and PAI/nanosilica (5 wt%) varnish and thermally aged at 150, 200 and $250^{\circ}C$ for 5, 10 and 15 days, respectively. AC insulation breakdown voltage was investigated under inverter surge condition at 60 Hz and 1,000 Hz and insulation breakdown voltage decreased with increasing aging temperature and aging time at each 60 and 1,000 Hz.

Keywords

References

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