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Power factor correction B25

Power factor correction B25
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Power factor correction automatic equipment Serie B25 General information Industrial plants where the load varies greatly throughout normal operation will require automatic P.F. equipment in order to connect the necessary capacitive power. Why should power factor be improved? • Reduced utility charges • Increased system capacity • Improved voltage • Reduced circuit losses Reduced utility charges Thermal capacity considerations force the Utilities to overbuild its distribution system in order to serve a facility with low power factor. The Utilities force the customer to install capacitors for reducing the reactive energy. Increased system capacity The thermal capacity of generators, transformers and cables limit the kVA that can be supplied by the system. Reducing the KVAR demand from existing load by installing capacitors, allows additional load to Improved voltage High demand of reactive power increases the voltage drops across transformers, cables and other system components. The result is a Operating Conditions decreased utilization voltage. The voltage drops can be limited by increasing the power factor. Rated voltage Reduced circuit losses Rated voltage of Power Factor Correction Equipment is the voltage for which the Since current is reduced in direct proportion to the increase in power equipment has been designed. To ensure that factor, the resistive losses, in the circuit, are inversely proportional to premature failure of the equipment is the power factor. The increase of power factor allows a losses eliminated, the operating voltage should not reduction with substantial benefits for the system. be greater than the rated voltage. The overvoltage limits allowed are in accordance conditions of overvoltage causes a reduction

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Power factor correction automatic equipment Serie B25 Operating conditions Working temperature Working temperature is a fundamental parameter for the safe functioning of Power Factor Correction Equipment. Consequently, it is very important to have sufficient heat dissipation inside the Power Factor Correction Equipment cubicle. Ventilation should be adequate to prevent the temperature rise exceeding the limits of the capacitor design. The capacitors are designed in accordance to CEI EN 60831-1 Standards. In hot weather, it is advisable that ventilation and/or air-conditioning are itted...

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Power factor correction automatic equipment Serie B25 Onduleurs • Redresseurs • Batteries Power Factor Correction in presence of harmonics In recent years, Power Factor Correction has evolved greatly due to the presence of harmonic generated loads. These loads produce harmonic currents and voltage which distorts the network waveforms. The main source harmonic generated loads are AC/DC static converters used for drive 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...

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