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 power consumption in kilowatts from the apparent power in kilovolt-amperes.
The calculator uses the formula:
Where:
Explanation: The apparent power is multiplied by the power factor to get the actual power being consumed or used.
Details: Understanding the difference between apparent and real power is crucial for proper electrical system design, energy efficiency, and equipment sizing.
Tips: Enter the apparent power in kVA and the 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 how effectively electrical power is being used.
Q2: What's a typical power factor value?
A: For most industrial loads, power factor ranges from 0.8 to 0.95. Residential loads often have lower power factors.
Q3: Why is power factor important?
A: Low power factor means you're drawing more current for the same real power, which can lead to higher energy costs and system inefficiencies.
Q4: How can I improve power factor?
A: Power factor correction capacitors can be installed to reduce reactive power and improve power factor.
Q5: What's the difference between kVA and kW?
A: kVA measures apparent power (total power in the circuit), while kW measures real power (actual power doing work).