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3 Phase Power Formula:
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The 3 phase power formula calculates real power in kilowatts (kW) from voltage, current, and power factor in a three-phase electrical system. It provides an accurate measurement of power consumption in industrial and commercial applications.
The calculator uses the 3 phase power formula:
Where:
Explanation: The formula accounts for the phase relationship in three-phase systems, with the √3 factor converting between phase and line quantities.
Details: Accurate power calculation is crucial for electrical system design, load balancing, energy management, and determining equipment specifications in industrial and commercial settings.
Tips: Enter voltage in volts, current in amps, and power factor as a decimal between 0 and 1. All values must be positive numbers.
Q1: What is the difference between single phase and three phase power?
A: Three phase power uses three alternating currents that are phase-shifted by 120 degrees, providing more efficient power delivery for industrial applications compared to single phase systems.
Q2: Why is the power factor important in this calculation?
A: Power factor represents the ratio of real power to apparent power. A lower power factor indicates more reactive power in the system, reducing efficiency.
Q3: What are typical power factor values?
A: Power factor typically ranges from 0.7 to 1.0. Industrial motors often operate around 0.8-0.9 PF, while heavily inductive loads may have lower power factors.
Q4: Can this formula be used for both delta and wye configurations?
A: Yes, the formula works for both delta and wye configurations when using line-to-line voltage and line current.
Q5: How does this differ from single phase power calculation?
A: Single phase power is calculated as P = V × I × PF, while three phase includes the √3 multiplier to account for the phase relationship between the three phases.