Power supply for the Pennsylvania railroad

An energy consumption of 238,000,000 kwhr per year will be required to handle through passenger trains on the electrified portion of the Pennsylvania Railroad system between New York City and Philadelphia, Pa., on which through service recently was initiated. This article describes the system used to supply that energy to the moving trains. The arrangement of apparatus and circuits adopted has resulted in low first cost, low operating maintenance, and reliability and simplicity of operation.