St. Petersburg, St. Petersburg State Mining Institute, 1999, -16cIn lectures, the requirements for electric drives of quarry dump trucks with electromechanical transmissions . The systems of electric drive of direct current used for electric transmissions, rational forms of mechanical characteristics, methods of obtaining brake modes. are given. Intended for students of specialties 180400 "Electric drive and automation of industrial plants and technological complexes" , and can also be used by students of specialty 170100 "Mining machines and equipment", including in the preparation of bachelor's graduation papers and at the initial stage of master's theses .