| Title |
A Study on the Dielectric Strength in Section of Winding in SF6 Gas Transformer |
| Authors |
허우행(Heo, U-Haeng) ; 하영식(Ha, Yeong-Sik) ; 홍정표(Hong, Jeong-Pyo) ; 김규탁(Kim, Gyu-Tak) |
| Keywords |
SF6 가스절연 변압기 ; 임펄스내전압 ; AC파괴전압 ; 가스압력 ; 권선 ; |
| Abstract |
This paper deal with the experimental discussion about the impulse and AC dielectric strength of SF6 gas insulated transformer. Test sample is measured the dielectric breakdown voltage about modeling of the first and second section which is the weakest for surge voltage. The AC breakdown voltage is appeared 1.4 times than impulse breakdown voltage, so we can estimate that the impulse breakdown voltage is severe to AC breakdown voltage, and when the impulse is applied, in case of lmm tapping with Nomex paper, the characteristics of dielectric breakdown voltage is same to that in oil immersed transformer when SF6 gas pressure is 2.2kg/cm^2G. |