Sine wave filters have a high degree of filtering, resulting in a high reduction of the stress on the motor insulation system. At the same time, they reduce the acoustic noise from the motor. Motor losses are reduced due to the fact that a sine-wave filter converts the output pulses of the frequency converter into at sine-wave-shaped. The result is a sine-wave-shaped current and reduced motor noise.

Maximum cable length with sine-wave filter is 300 m.

Output filters are used for reducing the voltage stress on the motor windings and the stress on the motor insulation system as well as for decreasing acoustic noise from a frequency-controlled motor.