Quick Question Regarding a simple Delta Connection.

Discussion in 'General Electronics Chat' started by fouadalnoor, Mar 29, 2009.

  1. fouadalnoor

    Thread Starter Active Member

    Oct 20, 2008
    I have a test coming up next week and I only have a problem with one question. It goes like this:

    There are three Identical capacitors which are connected in delta to a 415v, 50Hz three phase supply.

    If the line current is 15a, what is the capacitance of each of the capacitors?

    Using this information I know the following:

    VL = Vph
    IL = sqrt(3)Iph
    f = 50

    IL = 15

    I know that I can use the impedance equation to get the capacitance:

    XC = 1 / 2 pi fc

    but how do I get XC?
  2. mik3

    Senior Member

    Feb 4, 2008
    Divide the phase voltage by the phase current to get the impedance of each capacitor.