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Understanding Power Factor and How it Affects Your ...
Understanding Power Factor and How it Affects Your Electric BillPresented byScott Peele PEUnderstanding Power Factor Definitions kVA, kVAR, kW, Apparent Power vs. True Power Calculations Measurements Power Factor Correction Capacitors System Impacts I2R losses, Chapter 9 NEC Equipment sizing Power Factor Charges Problems with adding Caps Harmonic resonance Volt rise Power Factor vs Load FactorWhat is Power FactorPower Factor is the cosine of the phase angle between current and Factor is the ratio of true Power to apparent Alternating CurrentAC60 Hertz/secondDurationTimeMagnitudeVoltage Level169 volts120 Volts RMSOne Cycle .01666 secondsPhase Angle-200-150-100-500501001502000 DurationDegreesMagnitudeVoltage Level90120 Volts RMSOne Cycle 180270360ooooThree Basic Circuits or Loads Resistive Inductive Capacitive Or any combination Resistive Inductive Inductive Capacitive Resistive Capacitive Resistive Inductive CapacitiveTypes of Loads Resistive Incandescent Lamp Resistance heat Inductive Motors Contactor Coils Relays (coils) Capacitive Capacitors Start Capacitors Run Capacitors Power Factor Correction CapacitorsResistive LoadsIn Phas
Understanding Power Factor Definitions kVA, kVAR, kW, Apparent Power vs. True Power Calculations Measurements Power Factor Correction Capacitors System Impacts I2 R losses, Chapter 9 NEC Equipment sizing Power Factor Charges Problems with adding Caps Harmonic resonance Volt rise Power Factor vs Load Factor
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