# What is the relationship between phase voltage and line voltage?

## What is the relationship between phase voltage and line voltage?

The line voltage is defined as the potential difference between two phases in a three-phase system or polyphase system. It is denoted by Vl volts. The Phase voltage is the potential difference between one phase to the neutral point in any three-phase system or poly-phase systems and it is denoted by Vph in volts.

What is the relation between the line voltage and phase voltage in star connection?

In star connection, line voltage is √3 times the phase voltage. In star connection, phase voltage is 1/√3 times the line voltage. For Delta connection, the line voltage and phase voltage are equal.

What is the relationship of per phase voltage and line to line voltage in a balanced wye connected load?

Also, voltage magnitude across each phase of a Wye-connected load to neutral, or the phase-voltage ( ), is equal to the line-to-neutral voltage ( ) of the line supplying the load. The line-to-neutral voltage is equal to the line-voltage ( ) divided by .

### How do you calculate line voltage from phase voltage?

Phase voltage to line voltage calculator: Line voltage is V(L-L) in volts equal to root 3 times of the phase voltage V(L-N) in volts. Example: What is the line voltage of the delta connected system whose phase voltage is 240 Volts. V(L-L) = 240 x 1.732 = 415 Volts.

How do I calculate line current?

Line current is I(L) in Amps is equal to root 3 times of the phase current I(P) in amps. Example: What is the line voltage of the delta connected system whose phase current is 500 Amps? I(L) = 500 x 1.732 = 866 Amps.

What is meant by line voltage?

: the voltage of a power transmission circuit or distribution circuit up to the point of transformation or utilization.

## What is the difference between line current and phase current?

Line current is the current through any one line between a three-phase source and load. Phase current is the current through any one component comprising a three-phase source or load.

What is line current and phase current?

What is line current and line voltage?

Line voltage is the voltage measured between any two lines in a three-phase circuit. Phase voltage is the voltage measured across a single component in a three-phase source or load. Line current is the current through any one line between a three-phase source and load.

### What is the relation between line voltage and phase voltage?

Whereas the phase voltage is the voltage between the given phase and neutral. The relation between line voltage and phase voltage are proportionate. For a three phase or start connection, the Line voltage and Phase voltage relation can be mathematically written as-

Is the line current the same as the phase current?

We know in the star connection, line current is same as phase current. The magnitude of this current is same in all three phases and say it is I L. ∴ I R = I Y = I B = I L, Where, I R is line current of R phase, I Y is line current of Y phase and I B is line current of B phase.

Is the current and voltage of the red phase the same?

As we have considered that the system is perfectly balanced, the magnitude of current and voltage of each phase is the same. Let us say, the magnitude of the voltage across the red phase i.e. magnitude of the voltage between neutral point (N) and red phase terminal (R) is V R. We know in the star connection, line current is same as phase current.

## How are voltages and currents in a StAR related?

Similarly, the magnitude of the voltage across yellow phase is V Y and the magnitude of the voltage across blue phase is V B. In the balanced star system, magnitude of phase voltage in each phase is V ph. ∴ V R = V Y = V B = V ph We know in the star connection, line current is same as phase current.