Three Phase kWh Calculator

Three Phase kWh Formula:

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

Voltage (V):

volts

Current (I):

amps

Power Factor (PF):

dimensionless

Time:

hours

Energy Consumption (kWh):

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1. What is Three Phase kWh Calculation?

The three phase kWh calculation determines the energy consumption in kilowatt-hours for three-phase electrical systems. This is essential for industrial and commercial applications where three-phase power is commonly used.

2. How Does the Calculator Work?

The calculator uses the three phase kWh formula:

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

Where:

\( V \) — Voltage (volts)
\( I \) — Current (amps)
\( \sqrt{3} \) — Square root of 3 (approximately 1.732)
\( PF \) — Power factor (dimensionless)
\( time \) — Time duration (hours)

Explanation: The formula calculates the actual energy consumed by accounting for the three-phase power characteristics and power factor.

3. Importance of Three Phase Energy Calculation

Details: Accurate energy calculation is crucial for energy management, billing purposes, system design, and efficiency analysis in three-phase electrical systems.

4. Using the Calculator

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

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 energy consumption and system efficiency.

Q2: When should I use three-phase calculation instead of single-phase?
A: Use three-phase calculation for systems with three-phase power supply, typically found in industrial and commercial settings with higher power requirements.

Q3: What is the significance of √3 in the formula?
A: The √3 factor accounts for the phase relationship in three-phase systems where voltages and currents are 120 degrees out of phase with each other.

Q4: Can this calculator be used for DC systems?
A: No, this calculator is specifically designed for three-phase AC systems. DC systems use a different calculation method.

Q5: How accurate is this calculation for real-world applications?
A: The calculation provides a theoretical estimate. Actual energy consumption may vary due to system losses, voltage fluctuations, and other real-world factors.