In the book the organization and technology of repair of the electric equipment of locomotives (TEZ, 2TE10L, 2TE10V, TEP60, 2TE116, TEM1, TEM2, M62, TE1, TE2) direct and alternating current is described; provides information on the design, maintenance and testing of electrical machines and devices. The book was written in accordance with the curriculum and approved by the Academic Council of the USSR State Committee for Vocational Education as a textbook for secondary vocational schools. The textbook can be used in the professional training of workers in production.