1. What is 3 Phase Energy Calculation?

Definition: This calculator computes the energy consumption in kilowatt-hours (kWh) for three-phase electrical systems.

Purpose: It helps engineers, electricians, and facility managers estimate energy usage in three-phase power systems.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( E_{kWh} \) — Energy consumption (kilowatt-hours)
• \( V \) — Line voltage (volts)
• \( I \) — Current (amps)
• \( PF \) — Power factor (0 to 1)
• \( t \) — Time (hours)
• \( \sqrt{3} \) — Constant for three-phase systems (≈1.732)

Explanation: The formula calculates real power consumption by accounting for voltage, current, power factor, and time in a balanced three-phase system.

3. Importance of 3 Phase Energy Calculation

Details: Accurate energy calculation helps in power system design, energy billing, efficiency analysis, and equipment sizing.

4. Using the Calculator

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

5. Frequently Asked Questions (FAQ)

Q1: What is power factor and why is it important?
A: Power factor (0-1) represents the ratio of real power to apparent power. Lower PF means more current is needed for the same real power.

Q2: Is this formula for balanced three-phase systems?
A: Yes, this assumes a balanced load where all three phases carry equal current.

Q3: How do I find the line voltage?
A: Measure between any two phases with a voltmeter or check equipment specifications.

Q4: What's a typical power factor value?
A: Motors typically have 0.8-0.9 PF, while purely resistive loads have 1.0 PF.

Q5: Can I use this for single-phase calculations?
A: No, for single-phase use \( E_{kWh} = (V \times I \times PF \times t)/1000 \) (without √3).