# kVA to Amps and Amps to kVA Calculators

Convert kilovolt-amperes (kVA) to Amps (A) using our conversion calculator. Also, learn more about relations between Amps (A), Voltage (V), Watts (W), volt-amperes (VA), and other units often used not only in Electrical Engineering but in many other walks of life.

Published: February 13, 2024.

## kVA to Amps and Amps to kVA Conversion

In order to convert kilovolt-amperes (kVA) to Amps (A), feel free to use this conversion calculator - write your values, and click 'Calculate' to convert them.

 Kilovolt-amperes (kVA) to Amps (A) Kilovolt-amperes (kVA): Volts (V):

 Amps (A) to Kilovolt-amperes (kVA) Amps (A): Volts (V):

To convert Amps to kilowatts or kilowatts to Amps, feel free to check our Amps (A) to Kilowatts (kW) Calculator or our Kilowatts (kW) to Amps (A) Calculator article.

## How to Convert kVA to Amps and Amps to kVA?

The Apparent Power (Complex Power) of the system equals:

S(kVA)= [I(A) * U(V)] / 1000

Similarly:

I(A) = [S(kVA) * 1000] / U(V)

Note: I hope that math people won't get mad at me for using unnecessary "[" and "]" parenthesis, but they were added just to keep things as clear as possible :)

A few examples (just examples!):

### 150 kVA to Amps:

If we assume 440V line voltage, then:

I(A) = (150 kVA * 1000) / 440V = 340.909 Amps

### 100 kVA to Amps:

If we assume 220V line voltage, then:

I(A) = (100 kVA * 1000) / 220V = 454.545 Amps

### 15 kVA to Amps:

If we assume 110V line voltage, then:

I(A) = (15 kVA * 1000) / 110V = 136.363 Amps

### .75 kVA to Amps:

If we assume 110V line voltage, then:

I(A) = (0.75 kVA * 1000) / 110V = 6.818 Amps

## AC (Alternating Current) vs. DC (Direct Current) Electricity

AC (Alternating Current) electricity is characterized by the flow of electric charge that periodically reverses direction. In AC systems, the voltage level also varies sinusoidally over time. This type of electricity is commonly used in households and industries because it can be easily transformed to different voltages, reducing power loss over long distances.

DC (Direct Current) electricity involves the flow of electric charge in one constant direction. DC is commonly used in batteries, solar panels, and electronic devices. It is preferred for applications requiring stable and consistent voltage.

### Power Expressed in kVA and kW

In electrical systems, power is a measure of the rate at which electrical energy is transferred by an electric circuit. The unit of power is the watt (W), with larger systems often using kilowatts (kW) or megawatts (MW). However, when discussing AC power, it is important to differentiate between apparent power, real power, and reactive power.

• Apparent Power (Complex Power): Expressed in kilovolt-amperes (kVA), apparent power is the product of the RMS (root mean square) voltage and the RMS current in an AC circuit. It represents the total power in the circuit, both used and unused power. Apparent power is a combination of real power and reactive power and gives the total capacity required for the electrical system.
• Real Power (True or Working Power): Expressed in kilowatts (kW), real power is the capacity of the circuit for performing work in a particular time. It is the actual power consumed by all the resistive components of the circuit, such as motors, resistors, and appliances, converting electrical energy into work and heat.
• Reactive Power: While not directly doing work, reactive power, measured in kilovars (kVAR), is essential for maintaining the voltage levels necessary for active power to do useful work. Reactive power is consumed and regenerated cyclically by inductive (e.g., motors and transformers) and capacitive loads (e.g., capacitors) in the circuit. It is responsible for creating and maintaining the electric and magnetic fields required for AC operation.

Understanding the difference between these types of power is crucial for designing efficient electrical systems, as it affects how electrical equipment is sized and operated. For instance, too much reactive power can lead to inefficiencies and increased costs due to the need for larger-capacity equipment and infrastructure to handle the apparent power, even though the real power is what does useful work.

For short, AC and DC electricity describe the nature of the current flow in a circuit, while kVA, kW, and kVAR differentiate between the types of power within AC systems, each serving distinct roles in the transmission, consumption, and efficiency of electrical energy.