Transitional processes of switching-off high-voltage capacitor banks by circuit-breakers with
pre-insertion resistors are considered in the paper. Capacitor banks switching-off process by
circuit-breakers with PIR was studied from the point of view improving electromagnetic
environment via reducing switching currents by pre-insertion resistors. It is shown in the
paper that appropriate resistances and pre-insertion times provides both reducing switching
currents and stable operation of resistor.