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3 Phase Power Formula:
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Three-phase power is a common method of alternating current electric power generation, transmission, and distribution. It is more efficient than single-phase power for large industrial applications and power distribution systems.
The calculator uses the 3-phase power formula:
Where:
Explanation: The formula calculates the real power in a balanced three-phase system. The √3 factor accounts for the phase difference between the three phases.
Details: Power factor represents the ratio of real power flowing to the load to the apparent power. A higher power factor (closer to 1) indicates more efficient power usage.
Tips: Enter line-to-line voltage in volts, current in amperes, and power factor (between 0 and 1). Typical power factors range from 0.8 to 0.95 for most industrial applications.
Q1: What's the difference between line-to-line and line-to-neutral voltage?
A: In a 3-phase system, line-to-line voltage is between any two phases, while line-to-neutral is between a phase and neutral. Line-to-line is √3 times line-to-neutral.
Q2: What is a typical power factor value?
A: Industrial facilities typically aim for 0.9-0.95. Residential areas might be around 0.8-0.9. Pure resistive loads have PF=1.
Q3: Can this formula be used for unbalanced loads?
A: No, this formula assumes a balanced 3-phase system. Unbalanced systems require more complex calculations.
Q4: How does this differ from single-phase power calculation?
A: Single-phase uses P = V × I × PF without the √3 factor. Three-phase delivers more power with less conductor material.
Q5: What are common applications of 3-phase power?
A: Industrial motors, large HVAC systems, data centers, and any application requiring significant power (typically above 5 kW).