At the 110 kV step-down substation, two-winding transformers are installed. The number of transformers is n=2. The catalogued data are following: nominal power Snom=16 MVA; nominal voltage of primary winding Vpr nom=115 kV; nominal voltage of secondary winding Vs nom=11 kV; Rt=4.38 Ω; reactance Xt=86.7 Ω; turns ratio 115/10.5; off-load losses △Poff-load=19 kW; △Qoff-load=112 kVAr;

Тon-time=8760 hours.

The load is fed at 11 kV busses. It consumes power: SL=6+j2 MVA;

Тmax=5000 hours.