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 determine the actual working power.
Details: Proper conversion ensures accurate power system design, equipment sizing, and energy efficiency calculations.
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 the efficiency of power usage.
Q2: What's a typical power factor value?
A: Industrial systems often use 0.8, while residential might be 0.95-1.0. Perfect efficiency is 1.0.
Q3: Why is kW different from kVA?
A: kVA includes reactive power (non-working power), while kW represents only the actual working power.
Q4: How can I improve power factor?
A: Using power factor correction capacitors, optimizing motor loads, and reducing reactive power consumption.
Q5: When would I need this calculation?
A: When sizing generators, transformers, UPS systems, or calculating electrical system efficiency.