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OpenSpecEngineering

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Power Factor Correction

Required shunt capacitor reactive power and capacitance to raise a load's power factor from an existing value to a target value, Qc = P·(tanφ₁ − tanφ₂). Assumes a single-phase capacitor bank across the supply voltage.

BEFORE S1 (φ1) AFTER S2 (φ2) adding capacitive Q shrinks the angle φ, raising cosφ
Correction capacitor supplies reactive power, reducing the phase angle between voltage and current.

Solution

History