Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Three phaes Alternator

  1. Dec 26, 2005 #1
    Hi:rolleyes: ,
    I wanna know something about Alternator. first what is the different between Star Connection Alternator and Delta Connection Alternator, and why if we wanna find the Line Voltage from Star we use this formula Line Voltage = 1.73 * phase Voltage, exactly why 1.73, where did they give it? and also when we wanna find Line Currnet from Delta Altrenate we use this formula Line Currnet= 1.73 * Phase Currnt, exactly why also 1.73?

    Thanks for help

    I appreciate it :cool:
  2. jcsd
  3. Dec 26, 2005 #2


    User Avatar
    Science Advisor
    Gold Member

    "exactly why 1.73"

    It's the square root of 3.
    http://www.madsci.org/posts/archives/jan2001/979920827.Eg.r.html" [Broken]
    Last edited by a moderator: May 2, 2017
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook