Systems & controls manufactures automatic power factor controller, series hfi. It is available in different types: from a low cost 3 step controller to very high tech controllers. Technical specifications: hfi 66 sycon apfc displays all the parameters such as pf, shortfall kvar, voltage, current, thd, and mode all at a time. On demand it displays the % harmonic from 3rd to 13th. It has the built-in facility to cutoff the system in case of harmonic overload beyond set limits. On demand the individual capacitor status such as original capacitor value, present capacitor value, number of switching operations, and faulty condition if de rated below 60 % of original value can also be viewed. Salient features of the automatic power factor controller: in this high tech model it is not necessary to set c/k as in other controllers as it automatically adjusts c/k and takes best fit capacitor in vivo mode. Unlike most of the controllers it has a password protection system. It has a built in test mode, which enables testing the panel without ct current. In its optional feature logging off all above parameters is possible at an interval of 30 minutes and can be easily interfaced to any computer with serial communication.
