VA to kW – How to calculate, conversion, formula, equation and chart

For the conversion from VA to kW, it is only required to use the quick calculator or the formula that we show in this article.

In addition to the formula, we also explain some examples , an equivalence table and the step by step on how to convert from VA to kW.

Mas información:

VA to kW calculation formula:

va to kw formula
  • kW=One kilowatt is equal to 1000 watts.
  • VA=Volt-Ampere.
  • P.F=Power factor

How to convert VA to kW in only 1 step.how convert va to kw

Step 1.

Multiplicar VA por el factor de potencia (F.P). Consulte los factores de potencia comunes en este sitio web: http://calculatorsconversion.com/es/los-valores-de-poder-de-poder-%E2%80%8B%E2%80%8Bfor-the-most-common/.

Por ejemplo, si usted tiene un microondas que consume 1200VA y tiene un factor de potencia de 0,9, entonces usted debe multiplicar 1200VA por 0,9 para obtener 1080Watts. (1200VA /0.9 = 1080Watts).

Divida el paso 1 entre 1000, el resultado sera en kW. 1080W/1000=1,08kW.

Definition P.F, S (VA) and P (kW):

kW: is Working Power (also called Actual Power or Active Power or Real Power). It is the power that actually powers the equipment and performs useful work.

The real power in watts is the power that performs work or generates heat. Power in watts is the rate at which energy is consumed (or generated). One watt is one joule (energy) per second (1 W = 1 J/s).

Resistive devices or loads such as heaters, incandescent lamps are rated in kW.

VA: A Volt-ampere, commonly referred to as a VA, is commonly used as a unit of power in obtaining the electrical capacity of circuit breakers, uninterrupted power supplies and wirings.

VA is larger than Watts because loads are inductive such as motors, discharge lighting, reactors and more current is required to keep the magnetic field energized than is -turned into heat (Watts).

Inductive devices or loads such,. as tansformers and motors having power factor less than 1.0 are generally rated in VA.

P.F: Power factor is the ratio of working power to apparent power. It measures how effectively electrical power is being used. A high power factor signals efficient utilization of electrical power, while a low power factor indicates poor utilization of electrical power.

Power Factor is the cosine of the phase angle between current and voltage.
Power Factor is the ratio of true power to apparent power.

Typical Un-improved Power Factor by Industry:

IndustryPower Factor
Auto Parts0.75-0.80
Brewery0.75-0.80
Cement0.80-0.85
Chemical0.65-0.75
Coal Mine0.65-0.80
Clothing0.35-0.60
Electroplating0.65-0.70
Foundry0.75-0.80
Forging0.70-0.80
Hospital0.75-0.80
Machine Manufacturing0.60-0.65
Metalworking 0.65-0.70
Office Building0.80-0.90
Oil field Pumping0.40-0.60
Paint Manufacturing0.65-0.70
Plastic0.75-0.80
Stamping0.60-0.70
Steel Works0.65-0.80
Tool, dies, jigs industry0.65-0.75

Typical power factor of common household electronics:

Electronics devicePower Factor
Magnavox Projection TV – standby0,37
Samsung 70″ 3D Bluray0,48
Digital Picture Frame0,52
ViewSonic Monitor0,5
Dell Monitor0,55
Magnavox Projection TV0,58
Digital Picture Frame0,6
Digital Picture Frame0,62
Digital Picture Frame0,65
Philips 52″ Projection TV0,65
Wii0,7
Digital Picture Frame0,73
Xbox Kinect0,75
Xbox 3600,78
Microwave0,9
Sharp Aquos 3D TV0,95
PS3 Move0,98
Playstation 30,99
Element 41″ Plasma TV0,99
Current large, flat-screen television0,96
Windows-mount air conditioner0,9
Legacy CRT-Based color television0,7
Legacy flat panel computer monitor0,64
While-LED lighting fixture0,61
Legacy laptop power adapter0,55
Laser Printer0,5
Incandescent lamps1
Fluorescent lamps (uncompensated)0,5
Fluorescent lamps (compensated)0,93
Discharge lamps0,4-0,6

Typical Motor Power Factors:

PowerSpeedPower Factor
(hp)(rpm)1/2 load3/4 loadfull load
0 – 518000.720.820.84
5 – 2018000.740.840.86
20 – 10018000.790.860.89
100 – 30018000.810.880.91

Reference // Power Factor in Electrical Energy Management-A. Bhatia, B.E.-2012
Power Factor Requirements for Electronic Loads in California- Brian Fortenbery,2014
http://www.engineeringtoolbox.com

VA to kW conversion table-chart:

VAP.fkW
1 VA0,75 P.f0,00075 kW
2 VA0,75 P.f0,0015 kW
3 VA0,75 P.f0,00225 kW
4 VA0,75 P.f0,003 kW
5 VA0,75 P.f0,00375 kW
6 VA0,75 P.f0,0045 kW
7 VA0,75 P.f0,00525 kW
8 VA0,75 P.f0,006 kW
9 VA0,75 P.f0,00675 kW
10 VA0,8 P.f0,008 kW
20 VA0,8 P.f0,016 kW
30 VA0,8 P.f0,024 kW
40 VA0,8 P.f0,032 kW
50 VA0,8 P.f0,04 kW
60 VA0,8 P.f0,048 kW
70 VA0,8 P.f0,056 kW
80 VA0,8 P.f0,064 kW
90 VA0,8 P.f0,072 kW
100 VA0,85 P.f0,085 kW
200 VA0,85 P.f0,17 kW
300 VA0,85 P.f0,255 kW
400 VA0,85 P.f0,34 kW
500 VA0,85 P.f0,425 kW
600 VA0,85 P.f0,51 kW
700 VA0,85 P.f0,595 kW
800 VA0,85 P.f0,68 kW
900 VA0,85 P.f0,765 kW
1000 VA0,9 P.f0,9 kW
2000 VA0,9 P.f1,8 kW
3000 VA0,9 P.f2,7 kW
4000 VA0,9 P.f3,6 kW
5000 VA0,9 P.f4,5 kW
6000 VA0,9 P.f5,4 kW
7000 VA0,9 P.f6,3 kW
8000 VA0,9 P.f7,2 kW
9000 VA0,9 P.f8,1 kW
10000 VA0,95 P.f9,5 kW
20000 VA0,95 P.f19 kW
30000 VA0,95 P.f28,5 kW
40000 VA0,95 P.f38 kW
50000 VA0,95 P.f47,5 kW
60000 VA0,95 P.f57 kW
70000 VA0,95 P.f66,5 kW
80000 VA0,95 P.f76 kW
90000 VA0,95 P.f85,5 kW
100000 VA1 P.f100 kW
200000 VA1 P.f200 kW
300000 VA1 P.f300 kW
400000 VA1 P.f400 kW
500000 VA1 P.f500 kW
600000 VA1 P.f600 kW
700000 VA1 P.f700 kW
800000 VA1 P.f800 kW
900000 VA1 P.f900 kW
1000000 VA1 P.f1000 kW

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