Design of 45,000-Kv-a. Generators, Queenston Plant

The water power development at Queenston, Ontario, which made use of the combined head of Niagara Falls and the Niagara River Rapids below the Falls, involved the design and construction of, what up to the present time are the largest hydroelectric generators built. Owing to the size limits met in these generators certain interesting design problems were encountered. The more important of these problems dealt with the design of (1) the armature winding, (2) the upper bearing bracket and (3) the rotating spider. The solution of these problems is briefly discussed and a tabulation of major dimensions and weights of the generators is given.