| Title |
Measurement Range Extension of AC High Voltage using two 200 kV Capacitive Dividers |
| Authors |
정재갑(Jung, Jae-Kap) ; 이상화(Lee, Sang-Hwa) ; 강전홍(Kang, Jeon-Hong) ; 김명수(Kim, Myung-Soo) ; 김윤형(Kim, Yoon-Hyoung) ; 한상길(Han, Sang-Gil) ; 정진혜(Jeong, Jin-Hye) ; 한상옥(Han, Sang-Ok) ; 정종만(Joung, Jong-Man) |
| Keywords |
High voltage divider ; Standard voltage transformer ; Capacitive divider ; Dividing ratio ; Transformation ratio ; Ratio error |
| Abstract |
The output voltage value of AC high voltage source has been usually obtained by multiplying low voltage value measured at both terminals of low voltage resistor by the dividing ratio of the high voltage capacitive divider. From the dividing ratio determined of each 200 kV capacitive divider, we have developed step-up method for measuring the output voltage up to 400 kV using two same type of 200 kV capacitive dividers connected in series. The theoretical dividing ratio of 400 kV capacitive dividers connected in series coincides with that of manufacturer's certification within measurement uncertainty. Thus, this developed step-up method makes it possible to extend the range of output voltage from 200 kV to 400 kV. Furthermore, The dividing ratio of divider under test obtained using this step-up method is consistent with that obtained using one 200 kV high voltage divider within corresponding uncertainties. |