how can I make more than 1 chart arrays in one chart?

[HTLmödling]

hello everybody,

I'm a student from the htl mödling. this year I'll have my diploma and I have to simulate a protection for a high voltage wire. I have to create three zones in a chart, than I must measure voltage and current of the three hot wires to calculate each impedance. is this impedance out of the zones the system is okay, if it's not there is a failure. now i have to know in which zone the failure is.

how can i do this?

please help me!

yours karin