Question

What is the potential difference between two phase lines?​

Answer 1

Answer:

In 3 phase there are two connection.One is called delta connection and another is called star system.

Star Connection.

It has 4 wires.They are 3 lines (R,Y,B )and one Neutral.

1. Neutral and Phase voltage N to Vph=VL/1.732=440/1.732 = 254V

2.Line to Line voltage =VL=440V

Delta connection.

It has only 3 wires.In that Line and Phase voltages are equal and is equal to 44oV.

Explanation:

This will satisfy your doubt.Thanks

Answer 2

Line voltage is the potential difference between two phase lines.

Explanation:

The line voltage in a star connection is three times the phase voltage. The phase voltage in a star connection is $1/3$ the line voltage.

Voltage difference between two phases:

• Phase voltage is the voltage between phase and neutral. Line voltage is the voltage between two lines. Line voltages are used to represent a three-phase system. The voltage on the line is 440 volts.

• Lines are the conductors that connect a voltage source to a load, and line voltage is the voltage that exists between any two lines. Phase voltage is the voltage measured between any line and neutral.