1. What is the Transformer Voltage Equation?

The transformer voltage equation calculates the output voltage based on the input voltage and turns ratio. For a 480V input transformer, this provides the exact output voltage for any given turns ratio.

2. How Does the Calculator Work?

The calculator uses the transformer equation:

Where:

• \( V_{out} \) — Output voltage in volts
• \( 480 \) — Input voltage in volts
• \( ratio \) — Turns ratio (N_secondary/N_primary)

Explanation: The output voltage is directly proportional to the turns ratio when applied to a 480V input.

3. Importance of Voltage Calculation

Details: Accurate voltage calculation is crucial for proper equipment selection, circuit design, and ensuring compatibility with electrical systems.

4. Using the Calculator

Tips: Enter the turns ratio (unitless value). The ratio must be greater than 0. Typical values range from 0.1 to 10 for most applications.

5. Frequently Asked Questions (FAQ)

Q1: What is a typical turns ratio for step-down transformers?
A: Common step-down ratios range from 0.1 to 0.5 (e.g., 480V to 48V-240V).

Q2: Can this be used for step-up transformers?
A: Yes, any ratio >1 indicates a step-up transformer (e.g., ratio=2 gives 960V output).

Q3: How does this relate to current?
A: For ideal transformers, I_out = I_in × (1/ratio), ignoring losses.

Q4: What about three-phase transformers?
A: The same ratio applies to each phase in balanced three-phase systems.

Q5: Are there limitations to this calculation?
A: This assumes ideal conditions. Actual output may vary due to losses, load, and temperature.