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Power Factor Correction WHAT IS POWER FACTOR? Power Factor Correction Equipment can improve electrical efficiency (power factor) by reducing electricity consumption without compromising equipment performance. Charges levied by the Electricity Supply Companies are calculated according to an agreed tariff. Some Tariffs penalise consumers for poor power factor. In these cases a reduction in the overall cost of electricity can be achieved by improving the power factor to a more economic level. Example : A fully loaded 1000kVA transformer supplying a load with a power factor of 0.80 can only supply 800kW of “useful” load. By correcting the power factor to 0.95, an additional 150kW of load may be connected, increasing the “useful” load capacity to 950kW. Alternatively, by correcting the power factor from 0.80 to 0.95, the demand on the supply would be reduced by 158kVA. The consumer would save over £230 per month based on a typical charge of £1.50 per kVA of supply.
The average power factor for a given electrical installation is 72.5% based on the above data. This results in an average potential saving of up to 27.5%. In most cases investment costs for power factor correction equipment are recouped within 2-3 years. If the equipment is properly serviced this reduction in electricity consumption will be maintained and subsequent cost savings assured. SAVE ENERGY, SAVE MONEY If the electricity consumed on your business premises exceeds 100kVA, you stand to benefit from the installation of power factor correction equipment if you have an unsatisfactory power factor. Contact the Site Services team at Power Capacitors Limited for a free no-obligation survey and report (UK mainland). This report will include recommendations for the supply of equipment, if appropriate. ENVIRONMENTAL BENEFITS Power Factor Correction is one of the principle lines of defence against demand and energy losses. Investment in low voltage power factor correction equipment results in reduction in current, reducing in turn the kW losses in the system from the point at which it is connected. An increased awareness on the part of British Industry of the benefits of power factor correction would result in significant reductions in CO2 generated by power stations.
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