Abridgment of a 40,000-kw. variable-ratio frequency converter installation

This paper describes the installation of two 20,000-kw., adjustable-load, variable-ratio, frequency converters interconnecting the 25-cycle and the 50-cycle systems of the Niagara, Lockport and Ontario Power Company at Lockport Substation about twenty miles from Niagara Falls and Buffalo, N. Y. It also explains the function of the various machines, points out the more important features of the control, and relates a few interesting incidents in the past eighteen months of operation.