Why 440volts instead of 660volts in 3 phases of supply system?
In single phase supply, 220V is voltage diff. between Line & neutral while, In 3 phase supply there are 3 supply lines phase shifted at 120deg from each other, so net voltage diff. (the phase resultant) between two phases in accordance with phase angle of 120deg is 440V.
However in 3 phase, 4 line systems having 1 neutral also, the voltage diff. between neutral and any of the phase is 220V..
In single phase supply, 220V is voltage diff. between Line & neutral while, In 3 phase supply there are 3 supply lines phase shifted at 120deg from each other, so net voltage diff. (the phase resultant) between two phases in accordance with phase angle of 120deg is 440V.
However in 3 phase, 4 line systems having 1 neutral also, the voltage diff. between neutral and any of the phase is 220V..
No comments:
Post a Comment
Please give valuable comments on this post.