The IRI racks CF-CFR have stayed realized for power supply network with medium/high harmonic distortion of current (100% of non linear load in network). For high reliability each bank of capacitors is controlled by its own three-pole contactor, blocking reactor with tuning frequency 180Hz N=3,6. Rated voltage of the auxiliary circuits 230V 50Hz (other upon request). The capacitors used, IRIpro, are self-healing polypropylene metalized single- phase with overpressure safety device and discharge resistor, PCB free. We use capacitors with Un 550V rated voltage.