Detuned filters are three phase inductor connected in series with capacitor to attenuate the amplification of harmonics in harmonic rich network and protect the different component of the installation. Detuned harmonic filter do not destroy harmonic components in the system. It only prevents the harmonic current from increasing in amplitude. It is a well-known misinformation to say that it destroys harmonics in the system. Detuned filter improve power factor without amplifying harmonics.