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Three Phase Power Formula:
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The Three Phase Power Formula calculates electrical power in watts for a three-phase system using voltage, current, and power factor. It provides an accurate assessment of power consumption in three-phase electrical systems.
The calculator uses the Three Phase Power Formula:
Where:
Explanation: The formula accounts for the three-phase system characteristics, where the square root of 3 (approximately 1.732) is used to convert between line and phase quantities in balanced three-phase systems.
Details: Accurate power calculation is crucial for electrical system design, load balancing, energy consumption analysis, and proper equipment sizing in three-phase electrical systems.
Tips: Enter voltage in volts, current in amps, and power factor (dimensionless value between 0 and 1). All values must be valid (voltage > 0, current > 0, 0 ≤ PF ≤ 1).
Q1: Why is √3 used in three-phase power calculations?
A: √3 (approximately 1.732) is used to convert between line and phase quantities in balanced three-phase systems, accounting for the 120-degree phase shift between phases.
Q2: What is power factor and why is it important?
A: Power factor is the ratio of real power to apparent power, representing how effectively electrical power is being used. It ranges from 0 to 1, with 1 being ideal.
Q3: When should this formula be used?
A: This formula should be used for balanced three-phase AC systems to calculate real power consumption from voltage, current, and power factor measurements.
Q4: Are there limitations to this formula?
A: This formula assumes a balanced three-phase system. For unbalanced systems, individual phase calculations may be necessary. It also assumes sinusoidal waveforms.
Q5: How does this differ from single-phase power calculation?
A: Single-phase power is calculated as P = V × I × PF, while three-phase power includes the √3 multiplier to account for the three-phase system characteristics.