At present, power equipment that has fulfilled its technical resource requires not carrying out repair and restoration works, but full replacement with new, high-tech and competitive equipment. There is a need to create and manufacture generating units that meet modern requirements and trends in the development of the electric power industry. The basic requirements for new turbogenerators are: a) Increase of generators electric power with preservation of former dimensions; b) Reduction of specific mass, both the generator itself and individual elements of its design; c) increase the generator service life and the time between repairs; d) Increased reliability of the turbo-unit operation and its auxiliary systems (gas, oil, hydraulic seals); e) Reduction in the cost of generating equipment and there structural elements that wear out quickly (seals, oil separators, bearing shells, heat exchangers, etc.); f) Reduction in the cost of generating equipment and the cost of structural elements those wear out quickly (seals, oil separators, bearing shells, heat exchangers, etc.); g) eplacement of hydrogen with air, as a cooling medium, in those cases where it is permissible.