kW to Amps – Conversion, formula, chart, convert and calculator free.

With this tool you can convert kW to Ampere or Viceversa Amp. to kW automatically, easily, quickly and for free.

For greater ease we explain that formula is used for the calculation, how to convert from kW to Ampere in just 3 steps, some examples and a table with the main conversions from kW to Amperes.

We also show the most common power factors of different constructions, household electronics and motors.

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More information on converting from kW to Amps:


kW to Amps calculation formula:

formula from convert kW to amperes

 

  • kW = kilowatt or kilowatts.
  • LN = Volts line to neutral.
  • LL = Volts line to line.
  • AC1Ø = Current / Amps 1 phase.
  • AC2Ø = Current / Amps 2 phase.
  • AC3Ø = Current / Amps 3 phase.
  • FP = Power factor.

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How to convert from kW to Amperes in just 3 steps:

how to convert kw to amp in 3 step

Step 1:

Multiply the kW by 1000. For example, if you have a refrigerator that consumes 1.2kW, you must multiply 1,2 × 1000, obtaining 1200, (1,2 × 1000) = 1200.

Step 2:

Multiply the corresponding voltage according to the formula by the power factor and by the root of three. For example, if I have a 220V fridge with a power factor of 0.8, I multiply 220 × 0.8x√3 and get 304.84 ((220 × 0.8x√3) = 304.84.).

Step 3:

Divide step 1 between step 2. (1.2 × 1000) / (220 × 0.8x√3) and get 3.94A.

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Examples of conversions kW to Amperes:

Example 1:

We have a monophasic sound equipment – alternating current (AC) of 1.8kW, with a neutral line voltage of 120V and line line of 240V, a power factor of 0.9, how much ampere will the sound equipment have ?.

Rta: // We must multiply the kW by 1000 (1.8kWx1000), to then divide the result between the voltage by the power factor as indicated by the formula for single-phase systems: 1.8kWx1000 / 120 × 0.9 = 16, 67A.

Example 2:

A three-phase elevator (AC) consumes 9kW, has a line voltage of 220V and a power factor of 0.8, which amperage will have in the elevator ?.

Rta: // The first thing to do is multiply the power in kW by 1000 (9kWx1000), which will result in 9000, then you must divide this result between the multiplication of the voltage by the power factor and root of three, of the following way: 220Vx0,8x√3 = 304,8, finally divide 9,000 / 304 = 29,52A.

Example 3:

It has a bulb with a power of 0.5kW biphasic (AC), a line-to-line voltage of 208V and a neutral line voltage of 120V, with a power factor of 0.98, what amperage does the bulb have ?.

Rta: // You must take the kW and multiply them by a thousand, in the following way: 0.5kWx1000 and then divide the above between the multiplication of the voltage, the power factor and two, as indicated by the formula, leaving the next way: (0.5kWx1000) / (2x120x0.98), which will result in: 2.13A.

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Table kW a amperes, conversion, equivalence, transformation (Fp = 0.8, volts = 220V, AC, 3F):

How many kW: Ampere Equivalence
 1 kW Equivalence 3,28 Amperes
 2 kW 6,56 Amperes
 3 kW 9,84 Amperes
4 kW 13,12 Amperes
5 kW 16,40 Amperes
6 kW 19,68 Amperes
7 kW 22,96 Amperes
8 kW 26,24 Amperes
9 kW 29,52 Amperes
10 kW 32,80 Amperes
20 kW 65,61 Amperes
30 kW 98,41 Amperes
40 kW 131,22 Amperes
50 kW 164,02 Amperes
60 kW 196,82 Amperes
70 kW 229,63 Amperes
80 kW 262,43 Amperes
90 kW 295,24 Amperes
100 kW 328,04 Amperes
200 kW 656,08 Amperes
300 kW 984,12 Amperes
400 kW 1312,16 Amperes
 500 kW 1640,20 Amperes
600 kW 1968,24 Amperes
700 kW 2296,28 Amperes
800 kW 2624,32 Amperes
 900 kW 2952,36 Amperes
 1000 kW 3280,40 Amperes
1100 kW 3608,44 Amperes
1200 kW 3936,48 Amperes

Note: The conversions of the previous table were made taking into account a power factor of 0.8, a voltage of 220V, with a three-phase AC power. For different variables you should use the calculator that appears at the beginning.

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Typical Un-improved Power Factor by Industry:

Industry Power Factor
Auto Parts 0.75-0.80
Brewery 0.75-0.80
Cement 0.80-0.85
Chemical 0.65-0.75
Coal Mine 0.65-0.80
Clothing 0.35-0.60
Electroplating 0.65-0.70
Foundry 0.75-0.80
Forging 0.70-0.80
Hospital 0.75-0.80
Machine Manufacturing 0.60-0.65
Metalworking  0.65-0.70
Office Building 0.80-0.90
Oil field Pumping 0.40-0.60
Paint Manufacturing 0.65-0.70
Plastic 0.75-0.80
Stamping 0.60-0.70
Steel Works 0.65-0.80
Tool, dies, jigs industry 0.65-0.75

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Typical power factor of common household electronics:

Electronics device Power Factor
Magnavox Projection TV – standby 0,37
Samsung 70″ 3D Bluray 0,48
Digital Picture Frame 0,52
ViewSonic Monitor 0,5
Dell Monitor 0,55
Magnavox Projection TV 0,58
Digital Picture Frame 0,6
Digital Picture Frame 0,62
Digital Picture Frame 0,65
Philips 52″ Projection TV 0,65
Wii 0,7
Digital Picture Frame 0,73
Xbox Kinect 0,75
Xbox 360 0,78
Microwave 0,9
Sharp Aquos 3D TV 0,95
PS3 Move 0,98
Playstation 3 0,99
Element 41″ Plasma TV 0,99
Current large, flat-screen television 0,96
Windows-mount air conditioner 0,9
Legacy CRT-Based color television 0,7
Legacy flat panel computer monitor 0,64
While-LED lighting fixture 0,61
Legacy laptop power adapter 0,55
Laser Printer 0,5
Incandescent lamps 1
Fluorescent lamps (uncompensated) 0,5
Fluorescent lamps (compensated) 0,93
Discharge lamps 0,4-0,6

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Typical Motor Power Factors:

Power Speed Power Factor
(hp) (rpm) 1/2 load 3/4 load full load
0 – 5 1800 0.72 0.82 0.84
5 – 20 1800 0.74 0.84 0.86
20 – 100 1800 0.79 0.86 0.89
100 – 300 1800 0.81 0.88 0.91

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

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How to use the calculator from kW to Amperes:

The first thing you must do is enter the kW you want to convert, then choose the AC or DC current, it is important that once you choose the current you review the data shown on the left of the table, these change according to the current type chosen, then choose the number of phases: 1,2 or 3, this option will only be available if you choose AC current, continue entering the power factor, but if you know you can see the most common below .

Finally enter the voltage, it is very important that you observe the voltage that is requested on the left side of the table, because the correct type of voltage entered (line-line voltage or line-neutral voltage) depends on a good result, finally click on calculate to finish or restart to enter new values.