Automatic capacitor bank B25

power factorsingle-phaseharmonic

Power factor correction in presence of harmonics In recent years, Power Factor Correction has evolved greatly due to the presence of generated harmonics by the loads. These loads produce harmonic currents and voltage which distorts the network waveforms. The main sources of harmonics are generated by AC/DC static converters and UPS systems. For these reasons it is essential that any installation of Power Factor Correction equipment must be carefully evaluated. The possible presence of harmonic currents in the network could create conditions of parallel resonance between the inductance of the network and the capacitors, generating overcurrents and overvoltages, which would cause premature failure of the power factor correction capacitors. The ideal power factor correction solution for any system must be determined by examination of the system parameters and harmonic spectrum. Specifications - Rated voltage: 400Vac - Rated frequency: 50Hz (60Hz on request) - Voltage of auxiliary circuits: 110Vac - Working temperature range: -10°C/+50°C - Cubicle: 20/10mm sheet steel, protected against corrosion by a phosphating treatment. Epoxy powder painted, RAL 7035 color (other colors on request) External Protection Degree: IP30 (type S-M), IP40 (Type L) - Locking system: by screw for cubicle type S and type M type, by key for cubicle type L - Ventilation: Forced - Isolating switch: Three-pole with door interlocking device - Supplying: Type S: entry of the cable from the top/bottom, Type M: entry of the cable from the top, Type L: entry of the cable from the bottom