Why are the Generators star wound?

Why are the Generators star wound and motors delta wound? With equations please.

Why are the Generators star wound?music myspace

I think it has to do with Power Distribution.

On a Star configuration, you get Line-to-Line voltages, plus Line-to-Neutral voltage.

For a Line-to-Neutral voltage of 120v, the Line-to-Line voltage would be 1.73x120 or 208v.

The 1.73 comes from the 120 degrees phase shift between the 3 lines.

You could wire a motor either way, each winding is separate from the other, 6 terminals are provided, to connect jumpers according to the desired configuration.

Use your knowlege of trigonometry to determine the 1.73, which is sqrt(3). Comes from cos(alpha+0) + cos(alpha+120) + cos(alpha+240).

Why are the Generators star wound?emo myspace myspace.com

Generators need to be star wound so you can connect the star point to earth for safety.

Delta is cheaper so is used for motors where the star point is not needed.

Sorry no equations.
To get neutral point,for easy distribution,and star point can be earthed for safety.
Dear pa,

Fine,thankyou am also fine like you %26amp; mine answer for your question is, in order to take starting current of load the generators are star wound.
In Generators we take single phaes voltage(230) and also take the line voltage(440v) and actualy we need single phase and three phase supply and one more thing we are not using three supply anyware like home applances so we are coonncted star ingenerator.

in star connection

Line voltage = route3 times of phase voltage

Line current = phase current.

Power = rout3*v*I*pf

In motor we using delta on running tme because high torque developed.