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Typical industrial loads, such as induction motors connected to pumps, chillers, and compressors draw lagging reactive power (inductive kVAR) from the utility source along with real power (kW) that does useful process work. The vector sum of the real power and reactive power a load draws is the apparent power (kVA). Power factor is the ratio between the real power and the total apparent power for a given load and is the standard measure of how efficiently electrical power is being used by a system.

TCI PF Guard Power Factor Correction Capacitor Bank Distributors

PF Guard

Installation, Operation, and Maintenance Manual

Non unity power factor indicates sub-optimal power system efficiency and the resulting costs of non-unity power factor can be passed onto industrial users as power factor penalties and higher utility bills.

The PF Guard product provides capacitive reactive power to cancel the inductive reactive power generated by industrial loads thereby returning the system power factor to unity and increasing system efficiency. The PF Guard is designed to automatically control power factor of a monitored bus by automatically switching on or off multiple banks of power factor correction capacitors. An external Current Transformer (CT) is installed on the source line current bus and monitored by an integrated power factor controller. The power factor controller also monitors the bus voltage and calculates power factor. Based on the calculated power factor the PF Guard will switch on or off capacitor bank steps to regulate the system to a target power factor setting (unity 1.0 power factor by default).

If you are looking for TCI PF Guard Capacitor Banks, please call us on (800) 894 - 0412 or email us at we will do our best to help you find the TRANS-COIL PF Guard capacitor bank that you are looking for at the most competitive prices possible. If you are searching for TCI power factor correction technical information (data-sheets) please use the datasheets or product selection guide page links.

The PF Guard is designed for industrial loads where current and voltage harmonics are present. Modern loads such as variable frequency drives and phase controlled rectifiers generate higher order harmonics of the utility source frequency, typically starting at the 5th harmonic. To avoid oscillations and resonance issues on systems with such harmonics the PF Guard has integrated detuning reactors in series with the power factor correction capacitors. The detuning reactor is tuned to a frequency just under the 4th harmonic that prevents the power factor correction capacitors from sourcing harmonic currents.

The PF Guard filters consist minimally of the following features and components:

  • High-endurance, harmonic-rated capacitors
  • A KDR detuning reactor to prevent system interaction due to voltage harmonics and provide inrush current limiting to capacitors
  • Rugged contactors to allow automatic control of power factor
  • Multiple steps of capacitor banks to provide fine tune control of system power factor.
  • Bleeder resistors to ensure safe capacitor discharge upon filter shutdown
  • Advanced door mounted power factor control unit to automatically control system power factor and assist with start up and commissioning of the unit
  • Cooling fans to ensure adequate cooling and safe operating temperatures
  • Compression terminals for ease and integrity of all power and control wiring
  • Individual step fuses, sized to protect the step contactors
  • Option main input fuses, circuit breaker or disconnect switch

Our industrial factory automation supplies distributor warehouse in Boise, Idaho stocks some TRANS-COIL Inc. products enabling us to further assist you in finding the correct TCI PF Guard in the USA. Whether we have TRANS-COIL capacitor bank in stock in Boise, Idaho USA or need to ship direct from TCI to any USA cities; Clearwater Tech can get TCI capacitor banks to you fast and save you some money! It will be very helpful if you have the TCI capacitor bank part numbers ready, then our sales representatives can provide you with a pricing and availability quote for TRANS-COIL PF Guard that you are looking for in seconds. If you do not have the part numbers for TCI power factor correction, our application engineers will be able to help you figure out the part numbers and get the price quote to you as soon as possible.

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