The tutorial provides general information about railway power supply systems, describes DC and AC traction power supply systems, and formulates requirements for reliability of power supply to consumers. The main part of the manual is devoted to the construction of power supply and power supply systems for non-traction consumers of railways and the main electrical equipment used in the stationary electric power industry of railway transport. The manual contains descriptions of power supply systems for railway transport facilities and information on high-voltage and low-voltage networks, as well as on electrical equipment used in their construction.