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

Definition: This calculator converts single-phase power (kW) to equivalent three-phase power (kW) at the same voltage.

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 single-phase power is multiplied by √3 (approximately 1.732) to get the equivalent three-phase power at the same voltage.

3. Importance of Power Conversion

Details: Proper power conversion ensures accurate system sizing, correct equipment selection, and efficient power distribution in three-phase systems.

4. Using the Calculator

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

5. Frequently Asked Questions (FAQ)

Q1: Why multiply by √3 for three-phase power?
A: In balanced three-phase systems, the total power is √3 times the single-phase power due to the 120° phase difference between phases.

Q2: Does this conversion work for both current and power?
A: This specific conversion is for power (kW). Current conversion requires additional voltage information.

Q3: When would I need this conversion?
A: When sizing three-phase equipment based on single-phase measurements or when upgrading from single-phase to three-phase systems.

Q4: Is the voltage the same in both cases?
A: Yes, this conversion assumes the same line-to-line voltage in both single-phase and three-phase systems.

Q5: What's the accuracy of this conversion?
A: It's mathematically exact for balanced three-phase systems with purely resistive loads.