. Electric railway journal . IOWA AUTOMATIC HYDROELECTRIC PLANT—VIEWS SHOWING DAM, INTAKE FLUME AND SIDE VIEW OF POWER HOUSE 982 ELECTRIC RAILWAY JOURNAL [Vol. 50, No. 22 unit, with the exception of the field excitation for all generators is supplied from eitherof two motor-generator sets which deliver a constantcurrent without the interposition of Tirrill regulators,to the field coils of the several units. No instrumentshave been installed in the hydroelectric station, butrather have been placed on the control benchboard forthis station located in the steam plant. All arrang
. Electric railway journal . IOWA AUTOMATIC HYDROELECTRIC PLANT—VIEWS SHOWING DAM, INTAKE FLUME AND SIDE VIEW OF POWER HOUSE 982 ELECTRIC RAILWAY JOURNAL [Vol. 50, No. 22 unit, with the exception of the field excitation for all generators is supplied from eitherof two motor-generator sets which deliver a constantcurrent without the interposition of Tirrill regulators,to the field coils of the several units. No instrumentshave been installed in the hydroelectric station, butrather have been placed on the control benchboard forthis station located in the steam plant. All arrange-. IOWA AUTOMATIC HYDROELECTRIC PLANT—GENERALCROSS-SECTION ments for switching in the hydroelectric station itselfare entirely automatic. The connection between thetwo generating stations is thus made up of throegroups of conductors, the power cables, instrumentcable and control cable. The striking feature of the station interior is itssimple appearance. There is a single row of generatorsthrough the station, and opposite each is a cabinet inwhich the relays and switches for that unit aremounted. The few contactors and relays in view onthe front of these cabinets do not give one the impres-sion of any unusual amount of control apparatus. Theuse of switch cabinets rather than the usual paneledswitchboard, and the construction of a bus chamberimmediately below the cabinets, have made possiblethe impression of simplicity which one notices. Thisarrangement of the control apparatus has the advan-tage of making every element of the wiring and con-
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Keywords: ., bookcentury1900, bookdecade1900, bookpublishernewyorkmcgrawhillp
