Power Formula:
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Definition: This calculator converts apparent power (kVA) to real power (kW) using the power factor.
Purpose: It helps electrical engineers, technicians, and facility managers determine the actual power consumption of electrical systems.
The converter uses the formula:
Where:
Explanation: The apparent power is multiplied by the power factor to determine the actual usable power (real power).
Details: Understanding the relationship between kVA and kW is crucial for proper electrical system sizing, energy efficiency, and cost calculations.
Tips: Enter the apparent power in kVA and the power factor (default 0.8). Power factor must be between 0 and 1.
Q1: What's the difference between kVA and kW?
A: kVA measures apparent power (total power in system), while kW measures real power (actual usable power).
Q2: What's a typical power factor value?
A: Common power factors range from 0.8 to 0.95 for most industrial equipment. Residential is often near 1.0.
Q3: Can power factor be greater than 1?
A: No, power factor ranges from 0 to 1. Values above 1 are impossible in real-world systems.
Q4: Does this work for 3-phase systems?
A: Yes, the basic kVA to kW conversion is the same for single or 3-phase when using line values.
Q5: Why is my kW less than my kVA?
A: This is normal - kW is always ≤ kVA due to power factor representing efficiency of power conversion.