Three Phase KW Calculator

Three-Phase Power Formula:

\[ kW = \frac{\sqrt{3} \times V \times I \times PF}{1000} \]

Power Output (kW):

Unit Converter ▲

Unit Converter ▼

From:	To:

1. What Is Three-Phase Power?

Three-phase power is a common method of alternating current power generation, transmission, and distribution. It is used for power delivery in industrial and commercial applications due to its efficiency and ability to provide consistent power.

2. How Does The Calculator Work?

The calculator uses the three-phase power formula:

\[ kW = \frac{\sqrt{3} \times V \times I \times PF}{1000} \]

Where:

\( kW \) — Power in kilowatts
\( \sqrt{3} \) — Mathematical constant (approximately 1.732)
\( V \) — Voltage in volts
\( I \) — Current in amps
\( PF \) — Power factor (unitless, between 0 and 1)

Explanation: The formula calculates real power in a three-phase AC electrical system, accounting for the phase relationship between voltage and current.

3. Importance Of Power Factor

Details: Power factor represents the efficiency of power usage in an AC circuit. A higher power factor (closer to 1) indicates more efficient power transfer, while lower values indicate reactive power losses.

4. Using The Calculator

Tips: Enter voltage in volts, current in amps, and power factor as a decimal between 0 and 1. Ensure all values are positive and power factor is within the valid range.

5. Frequently Asked Questions (FAQ)

Q1: What Is The Difference Between Single-Phase And Three-Phase Power?
A: Single-phase power uses two wires (one phase), while three-phase uses three or four wires (three phases 120 degrees apart), providing more consistent power delivery.

Q2: What Is A Typical Power Factor Value?
A: Power factor typically ranges from 0.7 to 1.0. Industrial facilities often aim for 0.95 or higher to minimize penalties from utility companies.

Q3: Why Is √3 Used In Three-Phase Calculations?
A: √3 represents the relationship between line-to-line voltage and line-to-neutral voltage in a balanced three-phase system.

Q4: Can This Calculator Be Used For Motor Sizing?
A: Yes, this calculation helps determine the power requirements for three-phase motors and other industrial equipment.

Q5: What Are Common Three-Phase Voltages?
A: Common voltages include 208V, 240V, 380V, 400V, 415V, 480V, and 600V, depending on the country and application.