Conversion using the KVA to KW Formula
How to Calculate KW from Apparent power KVA and Power factor pf using AC Phase current.
The Real power P in kilowatts kW is calculated as the apparent power S in kilovolt-amps kVA, times the power factor PF:
For Example, let's find the real power of a piece of equipment with 70 kVA of apparent power and a power factor of 0.9.
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How to use KVA to KW Calculator?
To use the above "KVA to KW Conversion Calculator" follow the below steps:
1. Enter Apparent Power: Input the Apparent Power in KVA value in the specified input box. You can enter the value in VA or KVA by choosing the appropriate option from the dropdown.
2. Enter Power Factor: Input the power factor of the Load in the provided input box. The power factor is a unitless value typically between 0 and 1.
3. Reset: Click the Reset If you want to reset the calculator to perform another conversion, you can click the Reset button, and all input fields will be cleared.
4. Calculate: Click the Calculate button to obtain the results. The calculated results will be displayed in the Results: section.
5. Swap: If you want to Swap the calculated to Exchange conversion, you can click the Swap button, and Calculate will be Exchange.
6. Result: The calculated "Result" will be displayed in the respective Result In output KW output field.
KVA to KW conversion application
- Input Fields: Users enter Apparent Power KVA and Power factor pf.
- Real-Time Calculation: Converts KVA to KW instantly as the user enters the value.
- Power Factor Consideration: Includes optional input for power factor in phase calculations.
- Clear Results Display: Displays the calculated KW clearly after clicking "Calculate".
KVA To KW Conversion Chart
Input | Output | |
---|---|---|
KVA | Power Factor (PF) | Real Power KW |
1 | 1.0 | 1.0 |
2 | 1.0 | 2.0 |
5 | 0.9 | 4.5 |
10 | 0.8 | 8.0 |
15 | 0.7 | 10.5 |
Typical power factor values
Do not use typical power factor values for accurate calculations.
Equipment and appliances | cos θ | tan θ | |||
---|---|---|---|---|---|
Motor | Common induction motor | loaded at | 0 % | 0.17 | 5.80 |
25% | 0.55 | 1.52 | |||
50 % | 0.73 | 0.94 | |||
75 % | 0.80 | 0.75 | |||
100 % | 0.85 | 0.62 | |||
Lamps | Incandescent lamps | 1.0 | 0 | ||
Fluorescent lamps (uncompensated) | 0.5 | 1.73 | |||
Fluorescent lamps (compensated) | 0.93 | 0.39 | |||
Discharge lamps | 0.4 to 0.6 | 2.29 to 1.33 | |||
Ovens | Ovens using resistance elements | 1.0 | 0 | ||
Induction heating ovens (compensated) | 0.85 | 0.62 | |||
Dielectric type heating ovens | 0.85 | 0.62 | |||
Welding | Resistance-type soldering machines | 0.8 to 0.9 | 0.75 to 0.48 | ||
Fixed 1-phase arc-welding set | 0.5 | 1.73 | |||
Arc-welding motor-generating set | 0.7 to 0.9 | 1.02 to 0.48 | |||
Arc-welding transformer-rectifier set | 0.7 to 0.8 | 1.02 to 0.75 | |||
Arc furnace | 0.8 | 0.75 | |||
Power Factor Value Conversion Table |
Frequently Asked Questions - FAQs for KVA to KW Calculator
A common industry standard generator's Real power factor rating is 0.8, or 80%, meaning these loads can use 80% of the generator's power supply.
volt-ampere (VA) is the voltage times the current flow feeding an electrical load. A kilovolt-ampere (kVA) is 1000 volt-amperes. Electrical Real power is measured in watts (W).
A calculate the kVA rating for a single-phase transformer, you will need to multiply the required input voltage (V) by the required current load in amperes (l) and then divide that number by 1,000: V * l / 1,000.
The power factor is an expression of energy efficiency. It is usually expressed as a percentage—and the lower the percentage, the less efficient power usage is. Power factor (PF) is the ratio of working Real power, measured in kilowatts (kW), to apparent power (VA), measured in kilovolt amperes (kVA).
kVAh is short for "kilovolt-ampere hour." It is a measure of perceived power, which comprises both reactive and actual power.