1. What is 3 Phase Transformer Conversion?

The 3 Phase Transformer Conversion Calculator calculates the apparent power (kVA) in a three-phase electrical system using voltage and current measurements. This is essential for transformer sizing and electrical system design.

2. How Does the Calculator Work?

The calculator uses the 3 phase kVA formula:

Where:

• \( V \) — Line-to-line voltage (Volts)
• \( I \) — Line current (Amperes)
• \( \sqrt{3} \) — Constant for three-phase systems (approximately 1.732)
• 1000 — Conversion factor from VA to kVA

Explanation: The formula calculates the total apparent power in a balanced three-phase system by accounting for the phase relationships between voltages and currents.

3. Importance of kVA Calculation

Details: Accurate kVA calculation is crucial for proper transformer sizing, circuit breaker selection, and ensuring electrical systems operate within safe limits without overload.

4. Using the Calculator

Tips: Enter line-to-line voltage in volts and line current in amperes. Both values must be positive numbers for accurate calculation.

5. Frequently Asked Questions (FAQ)

Q1: What is the difference between kVA and kW?
A: kVA represents apparent power (voltage × current), while kW represents real power. The ratio between them is the power factor (cos φ).

Q2: Why is √3 used in three-phase calculations?
A: √3 accounts for the 120-degree phase difference between the three phases in a balanced system, converting line-to-line voltage to phase voltage.

Q3: What is typical voltage range for three-phase systems?
A: Common voltages include 208V, 240V, 480V, 600V (commercial/industrial) and higher voltages for transmission systems.

Q4: Can this calculator be used for single-phase systems?
A: No, this calculator is specifically for three-phase systems. For single-phase, use: kVA = (V × I) / 1000

Q5: How does power factor affect kVA calculation?
A: This calculator gives apparent power (kVA). To find real power (kW), multiply kVA by the power factor (cos φ).