How to Calculate Capacity of Low Voltage Transformer
Calculating the capacity of a low voltage transformer is crucial for ensuring the safety and efficiency of your electrical systems. This guide will walk you through the process using our interactive calculator.
- Enter the primary voltage (V1), secondary voltage (V2), and load current (I) in their respective fields.
- Click the “Calculate” button.
- View the results below the calculator.
The capacity (P) of a transformer can be calculated using the following formula:
P = (V1 * V2 * I) / 1000
Where:
- V1 is the primary voltage in volts (V)
- V2 is the secondary voltage in volts (V)
- I is the load current in amperes (A)
| V1 (V) | V2 (V) | I (A) | P (kVA) |
|---|---|---|---|
| 400 | 230 | 10 | 10.45 |
| 660 | 110 | 15 | 10.95 |
- Always use the correct transformer for your load to avoid overheating and damage.
- Consider the power factor of your load when calculating transformer capacity.
- Regularly inspect and maintain your transformers to ensure they remain safe and efficient.
What is the difference between a transformer and a reactor?
Transformers change the voltage level of alternating current (AC), while reactors are used to control the current or voltage in a circuit.
Learn more about transformers from the U.S. Department of Energy
Explore transformer capacity calculations from Engineering ToolBox