Product Description:

The 15.Z1.F04-1005 is a sine wave EMC filter produced by KEB and assigned to the Z1 Sine Wave EMC Filters series. Installed on the output side of a variable-frequency drive, it reshapes the pulse-width-modulated waveform into a near-sinusoidal form before the signal reaches the motor. This reduces stress on motor insulation, lowers interference on nearby wiring, and can also reduce the audible whine that appears when switching pulses reach the stator over long cable runs. Because the waveform is smoothed before it reaches the motor, the cable and winding system are exposed to less abrupt voltage rise.

The filter carries a continuous line current of 22 A, which allows it to support medium-power motor loads without pushing the magnetic core into saturation. Its insulation system is rated for 550 VAC, giving headroom for supply classes of 230 V / 400 V / 480 V commonly used in industrial systems. Magnetic components support switching frequencies up to 16 kHz, so attenuation remains effective when the connected inverter uses higher PWM rates to limit motor noise. The IP20 cabinet-mounted housing helps prevent accidental finger contact, but the unit still belongs inside a dry electrical enclosure with appropriate airflow around its components.

Performance is stated for motor leads longer than 40 ft, since extended cable runs increase impedance mismatch and raise the chance of reflected-voltage peaks at the motor terminals. The filter is suitable for PM or induction motors, so it can be used with either permanent-magnet or squirrel-cage machine designs without changing its basic filtering function. For use with an F6 drive, the reference table lists 10 at 230 V, 14 at 400/480 V, and 15 at 480 V as the matching filter-to-inverter combinations. The listed pairings keep the filter within its intended operating range and help limit dV/dt, common-mode effects, and conducted emissions on extended motor cables.