Detuned Filter Reactors are used in series with capacitor banks in power factor correction units. By using these types of detuned reactors it is possible to avoid the following negative effects on the system: Overcurrent during switching on the capacitor banksIncidental resonance of Capacitors along with stray inductanceOverload of capacitor banks due to the harmonic resonanceShort lifetime of capacitorsOverheating of the utility transmission cables.Overheating of the Distribution Transformer