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Math Help - Impedance circle calculation (elec. eng.) - Help- or any source to learn?

  1. #1
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    Impedance circle calculation (elec. eng.) - Help- or any source to learn?

    hey, looking for some way to figure out the answer to this problem. but a source to learn it or an explained answer would be greatly appreciated. " - A simple single phase impedance relay is set for Z=(R-1)^2 + (X-2)^2 = 4. It protects 2 lines. The first line has an impedance of Z =.5 +j2. The second line (in series) has an impedance of Z = 1 + j3. What percentage of the second line is protected. Draw the R-X diagram and use it to illustrate your solution. .
    Any help is appreciated, and also I'm a Technologist trying to learn protective relaying and stumbled across this.

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  2. #2
    Junior Member
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    Sep 2010
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    Re: Impedance circle calculation (elec. eng.) - Help- or any source to learn?

    Hi,

    Try posting on All About Circuits. It's a great forum for questions related to electrical engineering.

    Good luck!
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