1. What is Phase to Line Voltage?

The phase to line voltage conversion is used in three-phase electrical systems to calculate the line voltage (voltage between any two phases) from the phase voltage (voltage between any phase and neutral).

2. How Does the Calculator Work?

The calculator uses the phase to line voltage formula:

Where:

• \( \text{Line Voltage} \) — Voltage between any two phases (volts)
• \( \text{Phase Voltage} \) — Voltage between any phase and neutral (volts)
• \( \sqrt{3} \) — Approximately 1.73205

Explanation: In a balanced three-phase system, the line voltage is always √3 times the phase voltage.

3. Importance of Voltage Conversion

Details: Understanding the relationship between phase and line voltage is crucial for proper electrical system design, equipment selection, and safety calculations in three-phase power systems.

4. Using the Calculator

Tips: Enter the phase voltage in volts. The value must be positive. The calculator will compute the corresponding line voltage.

5. Frequently Asked Questions (FAQ)

Q1: When is this conversion needed?
A: This conversion is needed when working with three-phase electrical systems where equipment ratings may be specified in either phase or line voltage.

Q2: What's the difference between phase and line voltage?
A: Phase voltage is measured between a phase conductor and neutral, while line voltage is measured between two phase conductors.

Q3: Is this valid for all three-phase systems?
A: This is valid for balanced three-phase systems. Unbalanced systems require more complex calculations.

Q4: What about current calculations?
A: In star (wye) connections, line current equals phase current. In delta connections, line current equals phase current times √3.

Q5: What is the typical phase voltage in residential systems?
A: In many countries, residential systems provide 120V phase voltage (208V line voltage) or 230V phase voltage (400V line voltage).