The expermental results of a 250 kv 280 ns reactor-isolating-type Marx generator are given in this paper.The waveforms of charging and discharging voltages show good agreement with theoretical analysis. The triggered discharging operation range is still wide
when the reactors are tof 160 μH.It indicates that reactors can be used as resistors in nanosecond Marx generator and reactor-isolating-type Marx generator is more suitable to generate succesive pulses.