1. What is 3 Phase Power?

Three-phase power is a common method of alternating-current electric power generation, transmission, and distribution. It is more efficient than single-phase power for large industrial applications and power distribution systems.

2. How Does the Calculator Work?

The calculator uses the 3-phase power formula:

Where:

• \( P \) — Power in watts
• \( V \) — Line-to-line voltage in volts
• \( I \) — Current in amps
• \( PF \) — Power factor (0 to 1)

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

3. Importance of Power Calculation

Details: Accurate power calculation is essential for designing electrical systems, sizing equipment, and ensuring safe and efficient operation of electrical machinery.

4. Using the Calculator

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

5. Frequently Asked Questions (FAQ)

Q1: What is power factor?
A: Power factor is the ratio of real power to apparent power, representing how effectively current is being converted into useful work.

Q2: What is line-to-line voltage?
A: It's the voltage measured between any two line conductors in a three-phase system, also known as phase-to-phase voltage.

Q3: When is this formula valid?
A: This formula is valid for balanced three-phase systems with sinusoidal waveforms.

Q4: What's the difference between real and apparent power?
A: Real power (watts) does actual work, while apparent power (VA) is the product of voltage and current without considering power factor.

Q5: How does this compare to single-phase power calculation?
A: Single-phase power is simply V × I × PF, while three-phase includes the √3 factor to account for the phase relationships.