phase to ground voltage calculator
Calculate phase-to-ground voltage in single-phase and three-phase systems. Essential for power distribution, grounding checks, and electrical safety.
3 phase voltage to ground
In three-phase circuits, to obtain phase-to-ground voltage from line-to-line voltage, divide that voltage by sqrt{3}. In single-phase circuits use the line-to-neutral voltage.
Formula & Table Summary:
- Single Phase: VPG = VLN
- Three Phase: VPG = VLL / √3
electrical grounding voltage
A Phase to Ground Voltage Calculator can be used to check the voltage between a live conductor and ground on a single or three-phase circuit as a safety and equipment verification mechanism.The calculator can be applied by engineers, electricians, and students troubleshooting a power distribution network on the grounding, motors, and grounding checks. Just key the type of system and voltage and you will get the results immediately.
ground fault voltage
| System Type | V_LL (V) | V_LN (V) | V_PG (V) |
|---|---|---|---|
| Single-phase | — | 120 | 120 |
| Three-phase | 400 | — | 230 |
Frequently Asked Questions - phase to ground voltage calculator:
What is phase-to-ground voltage?
It is the voltage measured between a live phase conductor and ground (earth).
How to calculate phase-to-ground voltage in 3-phase systems?
Divide line-to-line voltage by √3.
Is phase-to-ground voltage the same as line-to-neutral?
Yes, in balanced systems.
Why is phase-to-ground voltage important?
It helps ensure safety, prevent overvoltage, and match equipment ratings.
What is the phase-to-ground voltage of 400V 3-phase?
Approximately 230V.
What happens if phase-to-ground voltage is too high?
It may indicate a fault or incorrect grounding.
Can phase-to-ground voltage be zero?
Only in a fault or open circuit condition.
What is V_LL in the formula?
V_LL is line-to-line voltage.
Why divide by √3 in 3-phase?
Because the phase voltage is the projection of line voltage in a balanced system.
Does grounding type affect voltage?
Yes, especially in ungrounded or high-resistance grounded systems.
Related Posts
kW to kWh Calculator
Easily convert kilowatts (kW) to kilowatt-hours (kWh) using our calculator. Quick, accurate energy conversion for homes, industries, and solar usage.
EV to Volts Calculator
Calculate electric vehicle battery voltage by multiplying the number of cells by nominal cell voltage. Essential tool for EV battery management.
Line-to-Line Voltage Calculator
Convert between line-to-line (V_LL) and line-to-neutral (V_LN) voltages, compute phasor line voltages from phase voltages, and check common system voltages (230/400, 277/480, 240/415).
energy charge voltage calculator
Convert energy and charge to voltage (and vice versa). Use V=E/Q or 2E/C for capacitors: handy for electronics and physics problems.
3 phase power calculator
Compute 3-phase real power (kW), apparent (kVA), and reactive (kVAr) using √3·V·I and power factor. Supports line voltage/current and balanced loads.
Branch current calculator
Easily calculate the current in each branch of a circuit using voltage, resistance, or impedance. Works for DC and AC with accurate results.