TY - SER AU - Mao, Chen AU - Zhang, Lu AU - Wang, Sen AU - Sun, Lei TI - Prediction Model of Voltage-Time Characteristics for Sf6 Long Gap Under Vfto and lightning Impulse Voltage KW - Voltage-Time Characteristics KW - Sf6 Long Gap KW - Very Fast Transient Overvoltage (Vfto) ER -