A high-voltage high-current switch on the basis of triggered vacuum switches

A KV-25-300 high-voltage switch for dc voltages of up to 25 kV and currents of up to 300 kА for pulse powering of loads at a pulse rise rate of up to 10 kA/μs was developed and tested. The switch consists of two series-connected RVU-43-1 triggered vacuum switches, thus making it possible to reduce the breakdown probability at the maximum operating voltage to a value of <10–7. The total switching-on time delay relative to the optical control pulse is 4 ± 0.5 μs. The results of measurements and calculation of the electric strength of RVU-43-1 and KV-25-300 and the results of switching tests of the latter are presented.