Electrical equipment of consolidated mining and smelting company's zinc plant

W. S. Peterson: I was employed at the plant referred to in this paper, which has rotary converters for its source of direct current. My experience at that plant, was that the rotary converters justify themselves in every way. The losses saved were roughly 5 per cent or 6 per cent of the total power used. The total power was 35,000 kw., which was maintained for 24 hours per day. You can understand that the power saved more than makes up for the increased maintenance of the rotary converter. The final result is greater economy.