1. What is 3 Phase Power?

Three-phase power is a common method of alternating-current electric power generation, transmission, and distribution. It's 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:

• \( Amps \) — Current in amperes (A)
• \( Volts \) — Voltage in volts (V)
• \( \sqrt{3} \) — Constant for 3 phase power (≈1.732)
• 1000 — Conversion factor to kVA

Explanation: The formula accounts for the phase difference in three-phase systems and converts the apparent power to kilovolt-amperes.

3. Importance of kVA Calculation

Details: kVA (kilovolt-ampere) represents apparent power in an electrical circuit. It's crucial for sizing transformers, circuit breakers, and other electrical equipment.

4. Using the Calculator

Tips: Enter current in amps and voltage in volts. Both values must be positive numbers. The calculator will compute the apparent power in kVA.

5. Frequently Asked Questions (FAQ)

Q1: What's the difference between kVA and kW?
A: kVA is apparent power (volts × amps), while kW is real power (volts × amps × power factor). For resistive loads, they're equal.

Q2: Why use √3 in the formula?
A: The √3 accounts for the phase difference between the three phases in a balanced three-phase system.

Q3: Is this formula for line-to-line or line-to-neutral voltage?
A: This formula uses line-to-line voltage (phase-to-phase voltage).

Q4: Can I use this for single-phase calculations?
A: No, for single-phase use: kVA = (Amps × Volts) / 1000 (without the √3 factor).

Q5: What's a typical power factor for industrial loads?
A: Industrial loads typically have power factors between 0.8 and 0.95, with motors often around 0.85.