The usual practice for reactive energy correction in industrial electrical systems, consists in connecting capacitors, some times fixed or generally controlled using automatic power factor regulators. However, directly connecting capacitors to the system is not always possible for several reasons, such as:

The existence of harmonic currents, generated by non lineal loads.

The possibility of resonance between capacitors and certain inductive loads or even the reactive dispersion of the supply transformer.

Generation of microcuts or other disturbances in the voltage at the time of connecting the capacitors, if the system's short circuit power is insufficient.

Lessening high frequency command signals transmitted through the system.

It is necessary to add reactances for each of these cases, sometimes to filter disturbances or others to obtain an appropriate rejection of harmonics or high frequency signals and to meet international standards on these events.

CIRCUTOR has developed a complete manufacturing program for power filters to correct the following problems:

Correcting resonance problems

Harmonic rejection in certain parts of the installation

Absorption of harmonics to reduce THD in the installation