1. What is kW to kVA Conversion for 3-Phase Systems?

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

Purpose: Helps electrical engineers and technicians properly size equipment by accounting for power factor in AC circuits.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( kVA \) — Apparent power (kilovolt-amperes)
• \( P_{kW} \) — Real power (kilowatts)
• \( PF \) — Power factor (unitless, between 0 and 1)

Explanation: The real power is divided by the power factor to account for the phase difference between voltage and current in AC systems.

3. Importance of kW to kVA Conversion

Details: Proper conversion ensures correct sizing of transformers, generators, and other electrical equipment that are rated in kVA rather than kW.

4. Using the Calculator

Tips: Enter the real power in kW and power factor (default 0.8). Power factor must be between 0.01 and 1.

5. Frequently Asked Questions (FAQ)

Q1: What is power factor?
A: Power factor is the ratio of real power (kW) to apparent power (kVA), representing the efficiency of power usage.

Q2: What's a typical power factor value?
A: Industrial systems often use 0.8 as default, while power factors of 0.95+ indicate highly efficient systems.

Q3: Why is this specifically for 3-phase systems?
A: While the formula is similar for single-phase, 3-phase systems require balanced loads and have different current calculations.

Q4: How do I find the power factor?
A: Use a power meter or check equipment specifications. Many motors list their power factor.

Q5: What if my power factor is greater than 1?
A: Power factor cannot exceed 1 (100% efficient). If you're seeing values above 1, check your measurement method.