Amps to kW Calculator 3 Phase

3-Phase Power Formula:

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

Power (P_kW): kW

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1. What is a 3-Phase Amps to kW Calculator?

Definition: This calculator converts electrical current (amps) to power (kilowatts) in three-phase systems.

Purpose: It helps electricians and engineers determine the power consumption or generation in three-phase electrical systems.

2. How Does the Calculator Work?

The calculator uses the formula:

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

Where:

\( P_{kW} \) — Power in kilowatts (kW)
\( V \) — Line-to-line voltage (volts)
\( I \) — Current (amps)
\( PF \) — Power factor (unitless, between 0 and 1)
\( \sqrt{3} \) — Constant for three-phase systems (≈1.732)

Explanation: The formula accounts for all three phases in the system and converts the result to kilowatts.

3. Importance of 3-Phase Power Calculation

Details: Accurate power calculation is essential for proper equipment sizing, energy management, and electrical system design.

4. Using the Calculator

Tips: Enter the line-to-line voltage in volts, current in amps, and power factor (default 0.8). All values must be > 0, with PF between 0 and 1.

5. Frequently Asked Questions (FAQ)

Q1: What's the difference between line and phase voltage?
A: In 3-phase systems, line voltage is between two lines, while phase voltage is between a line and neutral.

Q2: What's a typical power factor value?
A: Motors typically have PF of 0.8-0.9, while purely resistive loads have PF=1.

Q3: Why is √3 used in the formula?
A: The √3 factor accounts for the 120° phase difference in three-phase systems.

Q4: Can I use this for single-phase systems?
A: No, for single-phase use P = V × I × PF / 1000 (without the √3 factor).

Q5: How do I measure the power factor?
A: Use a power quality analyzer or power factor meter for accurate measurement.