. Electric railway journal . plied by a 10-kw, 125-volt, appearance of the substation equipment is shownherewith. The locomotive is of the standard 50-ton type shownin the second illustration. It is equipped with fourGE-207, 750-volt, box-frame, commutating-pole motorsinsulated for 1500 volts. The motors have a one-hourrating of 79 hp. They are ventilated from a blowerdirect connected to the dynamotor in the cab used forsupplying low-voltage current for operating the auxil-iaries. The gear reduction is 64 to 17. Sprague,General Electric type M control is used, and provisionis
. Electric railway journal . plied by a 10-kw, 125-volt, appearance of the substation equipment is shownherewith. The locomotive is of the standard 50-ton type shownin the second illustration. It is equipped with fourGE-207, 750-volt, box-frame, commutating-pole motorsinsulated for 1500 volts. The motors have a one-hourrating of 79 hp. They are ventilated from a blowerdirect connected to the dynamotor in the cab used forsupplying low-voltage current for operating the auxil-iaries. The gear reduction is 64 to 17. Sprague,General Electric type M control is used, and provisionis made for ten series and seven series-parallel steps. The current collector is of the type being installedon the main line locomotives, the slider being lifted intoposition by air pressure and held against the wire bysteel coil springs. Compressed air for all purposes issupplied from two CP-29, 1500-volt motor-driven com-pressors located in the cab, each having a displacementof 27 cu. ft. of air per minute at 90 lb. GREAT FALLS TERMINAL ELECTRIFICATION—1500-VOLT ELECTRIC LOCOMOTIVE On each end of the locomotive is a headlight contain-ing a 100-cp, concentrated filament Mazda lamp. The overhead line construction is of the catenarytype, similar in a general way to that installed on theButte, Anaconda & Pacific 2400-volt railroad. Bothspan and bracket constructions are used, depending uponlocal conditions. Poles are spaced approximately 150ft. apart on tangent track, supporting No. 0000 groovedtrolley wires from three-point suspension. No feedercopper is installed. The work was done by the electrification departmentof the Chicago, Milwaukee & St. Paul Railroad, , engineer in charge, under the direction ofC. A. Goodnow, assistant to the president. All of theelectrical apparatus, including locomotive, substationequipment and line material, was furnished by theGeneral Electric Company. New Forms of Fare Indicators andRecorders The accompanying illustrations show
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