The applications of series resonant type fault current limiter（SRFCL） may change the natural frequency of a system. And its impacts on switching overvoltage of off-load EHV transmission line need further investigation. Firstly

the terminal overvoltage waveforms of switching on off-load line are simulated in the presence and absence of SRFCL. The relationship of free component oscillation period

fundamental component amplitude

free component amplitude and current limiting reactance are gotten by theoretic calculation. The law of the influence of different current limiting reactance on terminal voltage of switching on off-load line is summarized. Secondly

considering arc re-ignition occurs or not

the terminal overvoltage waveforms of switching off off-load line in the presence and absence of SRFCL are analyzed. When arc reignites

the relationship curves between instantaneous maximum of overvoltage

free component oscillation period and current limiting reactance are presented. The research results show that the maximum of switching on overvoltages remains unchanged and the maximum of switching off overvoltage

as well as the rise rate of them presents downtrend as current limiting reactance increases. The installation of SRFCL is benefit for switching EHV off-load line.