I have trouble to find the right procedure to transform the circuit below to a thevenin equivalent.
I am looking for a symbolic solution a step by step guidance of where to start and how to add/locate all the impedance in series and parallel in order to calculate the sum of Z seen from point A and B
The Attempt at a Solution
I have a hard time see which impedance are in series and parallel, as Z5, Z4 and Z3 forms a star connection to GND?
Would the solution be to make a form of star/delta transformation of the circuit in order to calculate the circuit?