Liquid insulation is one of the ways of ensuring transformers – which convert electric power from high voltages to lower voltages – remain safe. Mineral oil, however, has been the main insulating ...

Abstract: Effect of rectifier circuit on lightning damages on transformers installed in DC traction substation is investigated in this paper. Some field tests are carried out to simulate the damage.

Abstract: This paper discusses a new scheme to reduce the level of fault currents in the feeder cable and power transformer windings under short-circuit conditions. The proposed scheme suggests ...