Amps to kVA Calculator

How to Convert Amps to Kilovolt-Amperes (kVA)

Converting amperes (amps) to kilovolt-amperes (kVA) is a common task in electrical engineering and power system analysis. This process involves understanding the relationship between electrical current, voltage, and apparent power.

Conversion Formula

The formula to convert amps to kVA depends on whether the system is single-phase or three-phase:

Single-Phase:

\[kVA = \frac{I \times V}{1000}\]

Three-Phase:

\[kVA = \frac{I \times V \times \sqrt{3}}{1000}\]

Where:

• kVA is the apparent power in kilovolt-amperes
• I is the current in amperes (A)
• V is the voltage in volts (V)

Calculation Steps

1. Determine if the system is single-phase or three-phase
2. Measure or obtain the current (I) in amperes
3. Identify the voltage (V) of the system
4. Apply the appropriate formula based on the phase
5. Perform the calculation to get the result in kVA

Example Calculation

Let's convert 50 amps to kVA for a three-phase system at 480 volts:

• Current (I): 50 A
• Voltage (V): 480 V
• Phase: Three-phase

1. Apply the three-phase formula: \[kVA = \frac{I \times V \times \sqrt{3}}{1000}\]
2. Substitute the values: \[kVA = \frac{50 \text{ A} \times 480 \text{ V} \times \sqrt{3}}{1000}\]
3. Calculate: \[kVA = \frac{50 \times 480 \times 1.732}{1000} = 41.57 \text{ kVA}\]

Therefore, 50 amps in this three-phase system at 480 volts is equivalent to approximately 41.57 kVA.

Conversion Visualization

This bar chart visually compares 50 A to its equivalent of 41.57 kVA. The chart illustrates how electrical current (amps) relates to apparent power (kVA) in this specific three-phase system example.