The growing use of power electronic devices is causing an increasing level of harmonic distortion in the electrical systems, which frequently leads to problems with capacitor installations. This is the reason why energy suppliers and actual conditions require the using of harmonic blocking reactors.
A detuned capacitor system works out the function of power factor correction whilst preventing any amplification of harmonic currents and voltages caused by resonance between capacitor and inductance of the electrical system. By adding an appropriately rated series reactor to the power capacitor, both elements form a low-pass resonant circuit (usually below the 5th harmonic) which prevents overload by higher order harmonics.
|Applicable standards||CEI-EN 60289 IEC 60289|
|Rated voltages||230 … 690 Vac|
|Rated frequencies||50 Hz o 60 Hz|
|Insulation (winding-core)||3 kV|
|Minimum temperature class||F|
|Maximum ambient temperature||40°C|
|Protection class||IP00, indoor mounting|
|Design||Three phase, high linearity|
|Winding material||Aluminum or copper|
|Terminals||Terminal block, or cable lugs|
|Thermal protection||By thermal probe and NC dry contact|