zero sequence current transformer

Discussion in 'General Electronics Chat' started by count_volta, Jun 3, 2012.

  1. count_volta

    Thread Starter Active Member

    Feb 4, 2009
    Hi, I'm doing a senior design project for a company that will remain nameless. They produce a ground fault relay, and my task is to re-design it.

    The GFR uses a zero sequence current transformer. I would like to learn as much as possible about these CT's. Can someone recommend good books or articles or websites that give a detailed explanation of these CT's?

    Are there models of them in spice or other circuit sims? I would like to play around with simulations before I play around with real 1200amps, cough cough.

    In my design im going to use ZC CT's that the company makes and use their output to control a micro-controller.

    Thanks guys
  2. t_n_k

    AAC Fanatic!

    Mar 6, 2009
    Try Googling something along the lines "fault detection / protection using transformer tertiary delta windings...."

    If you've not studied symmetrical components you may need to get your head around that as well.