A 2,000,000-kva transformer core

THE LARGEST 60-cycle transformer core ever made is now in successful operation on a 300,000,000-volt betatron at the University of Illinois. If this core were used for an oil-immersed power transformer, windings for continuous operation at 2,000,000 kva could be placed on it. Construction of this core demonstrates the feasibility of constructing transformers many times as large as have been built to take advantage of lower cost per kilovolt ampere and increased efficiency. Cores several times as large as this one can be made employing similar construction. Shipping clearances limit the size and weight of transformers which can be assembled in a factory and shipped to their destination. These limitations can be removed by assembling transformers in the field.