Output Ferrites (N-X) are especially effective in reducing electromagnetic interference from the motor cable, as they introduce an impedance between the Inverter and the motor.
Output ferrites are particularly useful in reducing electrical noise in the frequency range 5 to 20 MHz, as there is no other suitable noise suppression means in this frequency range. Output ferrites should be placed around the cable between the Inverter and Motor, as near as possible to the Inverter.
The cable (excluding earth wires and shielding) should pass through the ferrite at least twice.
