1. What is kVA vs kW in Generators?

Definition: This calculator converts between real power (kW) and apparent power (kVA) using the power factor.

Purpose: Helps electrical engineers and technicians properly size generators and understand power relationships.

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 (kW) is divided by the power factor to calculate the apparent power (kVA) needed from the generator.

3. Importance of kVA vs kW Calculation

Details: Proper calculation ensures generators are properly sized to handle both real and reactive power demands.

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 how effectively power is being used.

Q2: What's a typical power factor?
A: Most generators operate at 0.8 power factor, but this varies by equipment and load type.

Q3: Why is kVA different from kW?
A: kVA includes both real power (kW) and reactive power (kVAR), while kW only measures actual work being done.

Q4: How does this affect generator sizing?
A: Generators must be sized for kVA (apparent power), not just kW, to handle the total power demand.

Q5: Can power factor be greater than 1?
A: No, power factor ranges from 0 to 1, with 1 representing perfect efficiency (no reactive power).