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Our PFR-X Automatic Power Factor Control Relay also known as Power Factor Controller is used for calculating the reactive & active power in the mains from the measured voltage & current. It is based on the intelligent control algorithm which optimizes the switching sequences and hence assures shorter regulation times with least switching numbers. Consequently, the switching operations are shared in a balanced way among the available capacitor branches. Its integrated connection control instantly finds the phase current and voltage are measured; it adjusts the total system automatically. It has 10mA current threshold, which is very low and hence allows reliable and precise PF control. Without any need of additional manual adjustments, 1A and 5A current transform can be used. Voltage range of 90V to 550V is covered in the power supply.