1. What is a Single Phase to 3 Phase Calculator?

Definition: This calculator converts single-phase power to equivalent three-phase power using the square root of 3 (√3) factor.

Purpose: It helps electrical engineers and technicians estimate three-phase power requirements when only single-phase measurements are available.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( P_{3\phi} \) — Three-phase power (kW)
• \( P_{1\phi} \) — Single-phase power (kW)
• \( \sqrt{3} \) — Constant (approximately 1.732)

Explanation: The formula accounts for the phase difference in three-phase systems that allows for more power delivery with the same current.

3. Importance of 3-Phase Power Calculation

Details: Three-phase power is more efficient for industrial applications, providing constant power delivery and requiring less conductor material.

4. Using the Calculator

Tips: Enter the single-phase power in kilowatts (kW). The value must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: Why multiply by √3 for three-phase?
A: The √3 factor accounts for the 120° phase difference between the three phases in a balanced system.

Q2: Does this work for any voltage?
A: Yes, as long as the voltage remains the same between single-phase and three-phase systems.

Q3: When would I use this calculation?
A: When sizing equipment, converting measurements, or comparing single-phase and three-phase systems.

Q4: Is this accurate for unbalanced loads?
A: No, this calculation assumes a perfectly balanced three-phase system.

Q5: What's the difference in current between phases?
A: Three-phase systems deliver the same power with less current (about 58% of single-phase current for the same power).