Why use APFC Panels

Improving Power Factor

Improving Power Factor with APFC Panels

The power factor of an AC electrical power system is defined as the ratio of the real power flowing to the load to the apparent power in the circuit, and is a dimensionless number between 0 and 1. Real power is the capacity of the circuit for performing work in a particular time. Apparent power is the product of the current and voltage of the circuit. Due to energy stored in the load and returned to the source, or due to a non-linear load that distorts the wave shape of the current drawn from the source, the apparent power will be greater than the real power.

In an electric power system, a load with a low power factor draws more current than a load with a high power factor for the same amount of useful power transferred. The higher currents increase the energy lost in the distribution system, and require larger wires and other equipment. Because of the costs of larger equipment and wasted energy, electrical utilities will usually charge a higher cost to industrial or commercial customers where there is a low power factor.

Linear loads with low power factor (such as induction motors) can be corrected with a passive network of capacitors or inductors. Non-linear loads, such as rectifiers, distort the current drawn from the system. In such cases, active or passive power factor correction may be used to counteract the distortion and raise the power factor. The devices for correction of the power factor may be at a central substation, spread out over a distribution system, or built into power-consuming equipment.

An automatic power factor correction unit consists of a number of capacitors that are switched by means of contactors. These contactors are controlled by a regulator that measures power factor in an electrical network. Depending on the load and power factor of the network, the power factor controller will switch the necessary blocks of capacitors in steps to make sure the power factor stays above a selected value.

For power factor correction of high-voltage power systems or large, fluctuating industrial loads, power electronic devices such as APFC Panels or Automatic Power Factor Correction Panel are increasingly used. These systems are able to compensate sudden changes of power factor much more rapidly than contactor-switched capacitor banks, and being solid-state require less maintenance than synchronous condensers.

In industry most of the load is inductive in nature which results in lagging power factor that is why there is loss and wastage of energy which results in high power bills and heavy penalties from electricity boards. If the load is uneven it is very difficult to maintain unity power factor. To overcome this difficulty APFC panel is used which maintains unity P.F.

With an APFC the energy producer can:

• Avoid Penalization for lower power factor.
• Enjoy incentives for higher power factor operation being extended to Industries by some   Electricity Boards/ Companies.
• Optimize the connected load for improved plant load factor.
• Avoid manual disruption.
• Avoid high current consumption losses.
• Improvement in voltage regulation.
• Decrease Maximum Demand KVA, thus avoiding penalty and Demand Charges.

APFC Panels


Reasons why APFC Panels are needed :

An Automatic Power Factor Correction (Controller) panel or in short APFC Panel is used to Save Energy by consistently maintaining higher power factor. Low Power Factor leads to poor power efficiency, thereby increasing the apparent power drawn from the distribution network. This result in overloading of Transformer, Bus bars, Switch gears, Cables and other distribution devices within the Industry or consumer area.

Features And Applications :

High speed power factor correcting system are designed to compensate the reactive power of any load or equipment requireing P.F. correction within a one cycle of opearating frequency or time delay of 30 sec to 5 min after command signal from APFC controller.

Renders the distribution network more stable since there is no contactor switching causing high voltage transients, spikes, harmonics and other disturbances by applying zero cross over voltage switching ON and zero current switch OFF of the capacitors.

Prevents voltage drop and fickering reduces failures in highly sophisticated electronic equipments like PLCs, computers and other control systems.

Helps in reducing maximum demand and RKVAH consumption hence substantial reduction in monthly electricity triff.

It is highly suitable for spot welding applications where the reactive energy is to be compensated for a short period of 200 msec or less and for a number of times in a second.

Accurate power factor control even in the presence of harmonics.

Applications :

Textile Machineries
Printing Industry
Pharmaceutical Industry
CNC Machine
Hospitals
Film Industry
Food Processing industry
Resorts
Hostels
Farm house
Engineering Plant
Automobile Industry
IT industry

what our clients think

  • Wow, APFC Panels are just awesome. There Design help us reduce power factor, Avoid Power Factor penalty, Reduction in Maximum Demand (KVA), Reduction in Energy (KWH) consumption, Claim higher Power Factor incentives etc.A K Singh, Shubha Power, Mumbai.

  • Wow, Automatic Power Factor Correction Panels are just awesome. They are high quality designed and field tested APFC Panels, so i changed all my old APFC Panels with Automatic Power Factor Correction PanelRajan, Madurai.

  • Wow, There Automatic Power Factor Controller, Thyristor Switched Capacitors Design help us longer life of the existing electrical distribution components like transformer, switch gears, cables, etc. They are high quality designed and field tested APFC PanelsCV Gupta, Control Signals, Delhi, India.

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  • Office: C-12, East Krishna Nagar, Delhi-51, INDIA
  • Phone: +91-9810271172
  • Email: info@apfcpanels.com

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