Three Phase Watt Calculator

Three Phase Power Formula:

\[ W = V \times I \times \sqrt{3} \times PF \]

Power (W):

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1. What is Three Phase Power Calculation?

Three phase power calculation is used to determine the real power (in watts) in a three-phase electrical system. It accounts for voltage, current, power factor, and the √3 factor that represents the phase relationship in three-phase systems.

2. How Does the Calculator Work?

The calculator uses the three phase power formula:

\[ W = V \times I \times \sqrt{3} \times PF \]

Where:

\( W \) — Power in watts
\( V \) — Voltage in volts
\( I \) — Current in amps
\( \sqrt{3} \) — Approximately 1.732 (dimensionless)
\( PF \) — Power factor (dimensionless, between 0 and 1)

Explanation: The formula calculates real power in a balanced three-phase system by multiplying voltage, current, the √3 constant, and power factor.

3. Importance of Three Phase Power Calculation

Details: Accurate three phase power calculation is essential for electrical system design, load balancing, energy management, and equipment sizing in industrial and commercial applications.

4. Using the Calculator

Tips: Enter voltage in volts, current in amps, and power factor (between 0 and 1). All values must be valid (voltage > 0, current > 0, 0 ≤ PF ≤ 1).

5. Frequently Asked Questions (FAQ)

Q1: What is the significance of √3 in three phase calculations?
A: The √3 factor accounts for the 120-degree phase difference between the three phases in a balanced system.

Q2: How does power factor affect the calculation?
A: Power factor represents the ratio of real power to apparent power. A lower power factor means more current is required to deliver the same amount of real power.

Q3: When is this formula applicable?
A: This formula is used for balanced three-phase systems. For unbalanced systems, more complex calculations are required.

Q4: What are typical power factor values?
A: Power factor typically ranges from 0.7 to 1.0. Industrial loads often have power factors between 0.8-0.95.

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: W = V × I × PF.