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kVA to amps calculator FullScreen

Convert apparent power in kilovolt-amperes (kVA) to electrical current in amperes (A). Perfect for understanding the current requirements of electrical systems and equipment. Obtain an estimation of amperes from kVA using this convenient online tool.

Enter phase #:  
Enter kilovolt-amps: kVA
Enter volts: V
   
Result in amps: A


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What is kVA to amps calculator

To convert kilovolt-amps (kVA) to amps (A), you need to know the voltage (V) at which the electrical device operates and the power factor (PF) of the load. The formula for converting kVA to amps is:

Amps (A) = (kVA x 1000) / (V x PF)

To use this formula, multiply the apparent power (kVA) by 1000 and divide the result by the product of voltage (V) and power factor (PF).

For example, if you have a load with an apparent power of 8 kVA, operating at 240 volts with a power factor of 0.9, you can calculate the amperage as follows:

Amps (A) = (8 kVA x 1000) / (240 V x 0.9) Amps (A) = 33.33 A

In this example, the load has an amperage of approximately 33.33 amps.

It's important to note that the power factor (PF) plays a significant role in the calculation, as it represents the ratio of real power to apparent power. In cases where the power factor is not provided, it is common to assume a power factor of 1 (unity) for resistive loads or to refer to the specifications of the specific device or system.

Single phase kVA to amps calculation formula

The current I in amps is equal to 1000 times the apparent power S in kilovolt-amps, divided by the voltage V in volts:

I(A) =
1000 × S(kVA)V(V)

3 phase kVA to amps calculation formula

Calculation with line to line voltage

The phase current I in amps (with balanced loads) is equal to 1000 times the apparent power S in kilovolt-amps, divided by the square root of 3 times the line to line RMS voltage VL-L in volts:

I(A) =
1000 × S(kVA)√3 × VL-L(V)

Calculation with line to neutral voltage

The phase current I in amps (with balanced loads) is equal to 1000 times the apparent power S in kilovolt-amps, divided by 3 times the line to neutral RMS voltage VL-N in volts:

I(A) =
1000 × S(kVA)3 × VL-N(V)

kVA to amps calculator Example

To convert kilovolt-amps (kVA) to amps (A), you need to know the power factor (PF) of the electrical system. The formula to calculate amps from kVA and power factor is:

Amps (A) = kVA / (Volts (V) * PF)

Here's an example that demonstrates the calculation:

Let's assume you have a power factor of 0.9, a system voltage of 240 volts, and a kVA rating of 10 kVA.

Amps (A) = 10 kVA / (240 V * 0.9) ≈ 46.30 A

Therefore, the amperage corresponding to a 10 kVA rating with a power factor of 0.9 and a system voltage of 240 volts would be approximately 46.30 amps.

Please note that the power factor plays a significant role in this conversion as it represents the efficiency or quality of the electrical system. The calculation assumes a purely resistive load, and for different types of loads (such as inductive or capacitive), the power factor may vary, affecting the current calculation.