2x25 kV AC Railway System. How to calculate the Autotransformer Impedance (Ohms) from the AT specifications (Ucc, S, U1/U2)?

Dear all, I am starting to study/model the 2x25 kV AC railway system. When developing the AT short circuit test equations, I come to the equation (Zs+Zc)'=Ucc*U1n^2/S1n. For a typical 10 MVA AT...

12 December 2018 5,527 6 View