Power (kW) 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 and technicians determine the actual usable power in a system.
The calculator uses the formula:
Where:
Explanation: The apparent power is multiplied by the power factor to get the actual usable power.
Details: Proper conversion ensures accurate power system design, correct equipment sizing, and efficient energy usage.
Tips: Enter the apparent power in kVA and power factor (default 0.8). Power factor must be between 0 and 1.
Q1: What is power factor?
A: Power factor is the ratio of real power to apparent power, representing efficiency of power usage.
Q2: What's a typical power factor value?
A: Most industrial systems aim for 0.8-0.95. Residential may be lower (0.7-0.9).
Q3: Can power factor be greater than 1?
A: No, power factor ranges from 0 to 1. Values above 1 indicate measurement errors.
Q4: Why is kW less than kVA?
A: Because kW represents only the usable power, while kVA includes both usable and reactive power.
Q5: How can I improve power factor?
A: Using power factor correction capacitors, optimizing motor loads, and reducing reactive power.