1. What is a 3 Phase Amps to kVA Calculator?

Definition: This calculator converts current (amps) to apparent power (kVA) in three-phase electrical systems.

Purpose: It helps electrical engineers, technicians, and electricians determine the power in kVA based on voltage and current measurements.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( kVA \) — Apparent power in kilovolt-amperes
• \( V \) — Line-to-line voltage in volts
• \( I \) — Current in amperes
• \( \sqrt{3} \) — Constant for three-phase systems (≈1.732)

Explanation: The formula accounts for the phase difference in three-phase systems by multiplying by √3.

3. Importance of kVA Calculation

Details: kVA represents apparent power in AC circuits and is crucial for sizing transformers, circuit breakers, and other electrical equipment.

4. Using the Calculator

Tips: Enter the line-to-line voltage in volts and the current in amps. Both values must be > 0.

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 (kVA × power factor). kVA includes both real and reactive power.

Q2: Is this for line-to-line or line-to-neutral voltage?
A: The formula uses line-to-line (phase-to-phase) voltage.

Q3: Can I use this for single-phase systems?
A: No, for single-phase use: kVA = (V × I) / 1000 (without the √3 factor).

Q4: Why is √3 used in three-phase calculations?
A: It accounts for the 120° phase difference between the three phases in a balanced system.

Q5: How accurate is this calculation?
A: It provides theoretical apparent power. Actual power depends on load characteristics and power factor.