Filter Circuit/harmonic Reactors - Material: Aluminium

Features
High harmonic overloading capability Very low losses
High linearity to avoid choke tilt townoise
Simple mounting Long useful life
Temperature protection (NC contact)
Electrical energy is a significant production factor for industry and its efficient use should be a primary objective. Reducing the reactive current component by PFC comaction helps to save energy. The increasing use of modern power electronic opparatus (drives uninterruptible power supplies etc) that produce non near current influences and foods the network with harmonics (line pollution)

The power factor correction or capacitance of the power capacitor forms a resonant circuit in conjunction with the feeding transformer. Experience shows that the self resonant frequency of this circuit lles typically between 250 and 500 Hz le in the region of the 5th and 7thharmonics. Resonance con lead to the following undesirable effects

Overicading of copacitors
Overloading of transformers and transmission equipment
interference with mataring and control systems computers and electrical gear.
Resonance elevation Le amplification of harmonics
voltage distortion
These resonance phenomena can be avoided by connecting capacitors in series with filter reactors Detuned vystems are scaled so that the self-resonant frequency is below the lowest line harmonic. The detuned PFC system is purely inductive seen by harmonics above this frequency. For the 50 Hz line frequency the deturned system acts purely capacitively thus correcting the reactive-power.