We have the 2 units Interbus transformers (IBT) 90MVA, 275/150KV, 2 winding at the substation where the substation is supplied from hydro power plant with a 275KV transmission distance of 200km.
While IBT-1 was energized with voltage at HV side is 265 KV, voltage at LV side is 155KV and load 51...