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Version 6.00
General Information
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Volts Features
All Volts Features
Branch Circuit Load Calcs
Circuit Layout
Cable Tray Fill
Circuit Load Analysis
Conduit Fill
Device and Metal Box Fill
Efficiency Factor
Motor Ampacity and Characteristics
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Ohm’s Law
Power Factor
Power Factor Correction
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Series Location Voltage Drop
Transformer Sizing
Unit Conversions
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Power Factor Correction
     
 

The process of power factor correction attempts to return the power factor of an AC load close to unity (1.00) through various methods.

   
 

   
 

The power factor correction module features the ability to accurately calculate the required capacitance to alter the power factor to a desired value. Three different computation methods are supported encompassing both device and capacitor characteristics. The necessary capacitance, reactance and reactive power for the inquired device's power factor correction are calculated and capacitance and reactance are calculated for either delta or wye capacitor connection configurations.

The upper section acquires information of either the device(s) or capacitor to be analyzed from the three categories, Real Power, Volts and Current or Capacitor information.

In the lower section, the Power Factor Correction Module calculates the three sides of the power triangle, real power, apparent power and reactive power in a series of units that can either be defined prior to or after calculation. The required capacitor's reactance in ohms and the capacitance in a Farad unit are also calculated for single phase devices and three phase devices connected either in delta or wye configurations.

     

It simply cannot be any easier or more accurate to obtain the correct information the first time.

 

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Reprinted with permission from NFPA 70 2008, NEC® copyright© 2008, National Fire Protection Association. This is not the complete and official position of the NFPA on the referenced subject which is represented only by the standard in its entirety. The title National Electric Code® and the acronym NEC® are registered trademarks of the National Fire Protection Association (NFPA).

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