. Development and electrical distribution of water power . the same floor as the transformers, but separated from them,is the operating switchboard located so that the attendant can seefrom the gallery what is going on in the generator-room. The50,000-volt leads from the transformers go up through the floor tooil switches and then into bus compartments in a cell-room. Fromthe cell-room the 50,000-volt conductors pass up to oil switchesand from there to the protective apparatus and out to a steeltower, from which a span is made across the river to connect it tothe pole line to Minneapol


. Development and electrical distribution of water power . the same floor as the transformers, but separated from them,is the operating switchboard located so that the attendant can seefrom the gallery what is going on in the generator-room. The50,000-volt leads from the transformers go up through the floor tooil switches and then into bus compartments in a cell-room. Fromthe cell-room the 50,000-volt conductors pass up to oil switchesand from there to the protective apparatus and out to a steeltower, from which a span is made across the river to connect it tothe pole line to Minneapolis. In the uppermost story of the power plant is the motor-operatedgate-lifting mechanism. Turbines.—There are four turbine units each direct-connectedto a 2, generator. Each of these turbine units has four 234 DEVELOPMENT AND DISTRIBUTION OF WATER POWER runners 36 inches in diameter mounted on the same shaft. At the turbines are rated at 4, each with 55 feet head;at 48 feet head, 3,400 ; at 45 feet head, 3,150 Therun-. Scction ..tmroush fvUjN Unit *\_AN 1/ 1 * \* 1* I ■ J -5 1 , . ■ ■ H .■


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