APFC or Automatic Power Factor Control Panels are mainly used for the improvement of Power Factor.
Power Factor can be explained as ratio of active power to apparent power and it is a key factor in measuring electrical consumption. A dip in Power Factor can attract operational losses and a penalty from electricity board, also if the Power factor is maintained to Unity then the consumer can attract for incentive upto 7% in electricity bill. APFC Panels automatically manage quickly changing loads along with the retention of high Power Factor.
APFC stands for ‘automatic power factor correction’. An APFC panel consists of multiple capacitors of different ratings whose switching can be controlled as per requirement. An APFC is effective as a single-point installation which can be used to control the power factor for a large number of loads, instead of installing capacitors at the individual locations of each load.
Depending on the loads in operation, various levels of kVAR compensation are required to maintain proper power factor. The APFC panel contains a multi-step relay which is connected to multiple capacitors and a microprocessor controller which is programmed to control the switching operation of the relay. The voltage and current are measured on the feeder which is providing supply to the entire group of loads to determine the uncompensated power factor. Then, as per the ratings of the different capacitors used in the APFC