Wattage Calculator 3 Phase

Three Phase Power Formula:

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

Wattage (W):

Unit Converter ▲

Unit Converter ▼

From:	To:

1. What is Three Phase Power Calculation?

Three phase power calculation determines the real power (wattage) in a three-phase electrical system. It accounts for voltage, current, power factor, and the √3 constant 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:

\( W \) — Wattage (watts)
\( V \) — Voltage (volts)
\( I \) — Current (amps)
\( \sqrt{3} \) — Constant (approximately 1.732)
\( PF \) — Power factor (dimensionless, 0-1)

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

3. Importance of Wattage Calculation

Details: Accurate wattage calculation is essential for electrical system design, load balancing, energy consumption analysis, and proper equipment sizing in industrial and commercial applications.

4. Using the Calculator

Tips: Enter voltage in volts, current in amps, and power factor as a decimal 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 the formula?
A: The √3 constant accounts for the phase difference between the three phases in a balanced system, converting line-to-line measurements to per-phase values.

Q2: 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 and affects system efficiency.

Q3: When is this formula applicable?
A: This formula applies to balanced three-phase systems with sinusoidal waveforms. For unbalanced systems or non-sinusoidal waveforms, more complex calculations are needed.

Q4: What are typical power factor values?
A: Power factor typically ranges from 0.7 to 1.0. Industrial motors often have 0.8-0.9 PF, while heavily inductive loads may have lower power factors.

Q5: How does this differ from single-phase power calculation?
A: Single-phase power is V × I × PF, while three-phase includes the √3 multiplier to account for the additional phases and different voltage relationships.