1. What is Voltage To Ground?

Voltage to ground is the voltage between any given conductor and ground in an electrical system. In a three-phase system, the voltage to ground is the line voltage divided by the square root of 3.

2. How Does the Calculator Work?

The calculator uses the voltage to ground formula:

Where:

• \( V_{ground} \) — Voltage to ground (volts)
• \( V_{line} \) — Line voltage (volts)
• \( \sqrt{3} \) — Approximately 1.732

Explanation: This formula converts line-to-line voltage to line-to-ground voltage in a balanced three-phase system.

3. Importance of Voltage To Ground Calculation

Details: Knowing voltage to ground is essential for insulation coordination, safety analysis, and equipment rating in electrical systems.

4. Using the Calculator

Tips: Enter the line voltage in volts. The value must be positive and greater than zero.

5. Frequently Asked Questions (FAQ)

Q1: Why divide by √3 for voltage to ground?
A: In a balanced three-phase system, the voltage between any line and neutral (ground) is the line voltage divided by √3 due to the 120° phase difference.

Q2: Is this calculation valid for all three-phase systems?
A: This applies specifically to balanced three-phase systems with equal voltages and 120° phase separation.

Q3: What's the difference between line voltage and phase voltage?
A: Line voltage is between two phases, while phase voltage is between a phase and neutral (ground).

Q4: Does this apply to delta and wye configurations?
A: In wye systems, phase voltage is line voltage/√3. In delta systems with no neutral, phase and line voltages are equal.

Q5: How accurate is this calculation?
A: It's mathematically precise for ideal balanced systems. Real-world factors like imbalance may affect actual voltages.