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Kilowatts To Amps 3 Phase Calculator

Three Phase Power Formula:

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

kW
V
(0 to 1)

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1. What is the Three Phase Power Formula?

The three phase power formula calculates electrical current (amps) from power (kilowatts) in a three-phase AC system. It accounts for voltage, power factor, and the three-phase constant (√3 ≈ 1.732) to provide accurate current measurements.

2. How Does the Calculator Work?

The calculator uses the three phase power formula:

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

Where:

Explanation: The formula converts kilowatts to watts (×1000), then divides by the product of voltage, square root of 3 (for three-phase systems), and power factor to obtain the current.

3. Importance of Current Calculation

Details: Accurate current calculation is essential for proper electrical system design, circuit breaker sizing, wire gauge selection, and ensuring equipment operates within safe current limits.

4. Using the Calculator

Tips: Enter power in kilowatts, voltage in volts, and power factor (0 to 1). All values must be positive numbers with power factor between 0 and 1.

5. Frequently Asked Questions (FAQ)

Q1: What is power factor and why is it important?
A: Power factor represents the ratio of real power to apparent power. It's crucial because it affects the actual current drawn by electrical equipment.

Q2: When should I use this three-phase formula?
A: Use this formula for balanced three-phase AC systems commonly found in industrial and commercial electrical applications.

Q3: What is the typical range for power factor?
A: Power factor typically ranges from 0.7 to 1.0. Values closer to 1 indicate more efficient power usage.

Q4: How does voltage affect the current calculation?
A: Higher voltage results in lower current for the same power, which is why high-voltage transmission is used for long-distance power distribution.

Q5: Can this calculator be used for single-phase systems?
A: No, this calculator is specifically for three-phase systems. Single-phase calculations use a different formula without the √3 factor.

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