1000 Kw. Automatic Mercury Arc Rectifier Substation of the Union Railway Company of New York

A 1000-kw., 625-volt automatic mercury arc rectifier substation, installed by the Union Railway Co., of New York, in May, 1929, is described in general in this paper together with the account of the automatic and remote control features of the substations. The principle reasons for the adoption of the mercury arc rectifier are mentioned and operating and performance data for the first ten months' operation are presented.