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3 Phase Power Formula:
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The 3 Phase Power Formula calculates the real power in a three-phase electrical system. It considers the voltage, current, and power factor to determine the actual power being consumed or delivered in the system.
The calculator uses the 3 Phase Power Formula:
Where:
Explanation: The formula calculates the real power in a balanced three-phase system, accounting for the phase relationship between voltage and current through the power factor.
Details: Accurate power calculation is essential for electrical system design, load balancing, energy consumption analysis, and proper sizing of electrical components and protection devices.
Tips: Enter line-to-line voltage in volts, current in amperes, and power factor (value between 0 and 1). All values must be valid positive numbers with power factor between 0 and 1.
Q1: What is power factor and why is it important?
A: Power factor represents the ratio of real power to apparent power. It indicates how effectively electrical power is being used, with values closer to 1 indicating more efficient power usage.
Q2: When is this formula applicable?
A: This formula is used for balanced three-phase AC systems where the voltages and currents are equal in magnitude and 120 degrees out of phase with each other.
Q3: What's the difference between line-to-line and line-to-neutral voltage?
A: Line-to-line voltage is the voltage between any two phases, while line-to-neutral is between a phase and neutral. In a balanced system, line-to-line voltage equals line-to-neutral voltage multiplied by √3.
Q4: How does power factor affect the calculation?
A: Lower power factors result in less real power for the same apparent power (VA), meaning more current is required to deliver the same amount of useful power.
Q5: Can this calculator be used for single-phase systems?
A: No, this calculator is specifically for three-phase systems. Single-phase power calculation uses a different formula: P = V × I × PF.