Automatic Control for Mercury Arc Rectifiers

Automatic control for steel-tank mercury-arc rectifiers may be considered under 2 main divisions, one being control for switching equipment, and the other being control of the unit auxiliaries such as tank heaters, anode heaters, vacuum control and protective equipment, arc ignition and excitation, cooling tank, and circulating pump. A review of present day practice in automatic control for mercury arc rectifiers is presented herewith.