The 65,000-Kv-a. Generator of the Niagara Falls Power Company

The initial hydroelectric development of the Niagara Falls Power Company is referred to and comparisons are made with the latest development, which involves three units, each with a 65,000-kv-a. generator. The amount of material in a generator as affected by speed, periodicity and efficiency aimed at, is discussed. The electrical characteristics of the first of the 65,000-kv-a. generators are outlined. The mechanical construction is described in considerable detail with the aid of cross-sectional views of certain parts and of the generator as a whole. A special feature of this unit is a direct-connected 650-kv-a., 25-cycle generator for furnishing excitation through a motor-generator set and for driving auxiliaries, such as pumps. Some weight data are added, showing this generator to contain over one and one-half million pounds of material??undoubtedly the heaviest electrical machine ever built.