Discussion on “protective reactors for feeder circuits of large city power systems” (Lyman, Perry and Rossman) and “use of reactance with synchronous converters,” (Yardley) New York, October 9, 1914. (see proceedings for Novemb

D. B. Rushmore: It is very difficult to consider the subject of reactors for power stations or feeders without studying the apparatus such as generators, transformers, oil switches, protecting apparatus, etc. As a rule, electrical disturbances are due either to high currents, high voltages or high frequencies; and high frequencies have, as a rule, an indirect effect of producing high voltages, so we have simply high currents and high voltages to contend with.