. Electric railway journal . ,270 60,000 Control equipment 12,700 2s|000 Air-brake equipment 2,300 5,050 Dimensions A Items Meters In. Maximum width 120 Maximum length 434 Diameter of driving wheels 64 Diameter of pony truck wheels The motors are mounted on the frame in such a waythat the air gap of the motor can be kept as small aselectrical considerations will permit. This is done bymaking the bearings which support the rotor rigid withthe stator frame, and independent of those which sup-port the revolving shaft. The motors are connected tothe driving wheels by a Sc
. Electric railway journal . ,270 60,000 Control equipment 12,700 2s|000 Air-brake equipment 2,300 5,050 Dimensions A Items Meters In. Maximum width 120 Maximum length 434 Diameter of driving wheels 64 Diameter of pony truck wheels The motors are mounted on the frame in such a waythat the air gap of the motor can be kept as small aselectrical considerations will permit. This is done bymaking the bearings which support the rotor rigid withthe stator frame, and independent of those which sup-port the revolving shaft. The motors are connected tothe driving wheels by a Scotch yoke similar to that ofthe Giovi locomotive. These locomotives are designed for the Giovi subsid-iary line and for the Monza-Lecco line, which connectsMilan to the Lake of Como and the Valtellina lineswhich were electrified in 1901 with the same Monza line is level single-track, while the Giovisubsidiary is double-track and has fairly high grades,reaching per cent in the open and in a THREE-PHASE ITALIAN PASSENGER LOCOMOTIVES—FIG. 3—TYPICAL MOTOR CONNECTIONS Showing the method of connecting the two motors for three-phase,eight-pole, cascade (left) and for two-phase, six-pole parallel. February G, 1915] ELECTRIC RAILWAY JOURNAL 285 Operating Results Some figures regarding the performance and tests ofthis type of locomotive may be interesting. The normalrating of the two motors is 2600 hp at three-phase,16 2/3 cycles, 3300 volts and is such that the locomotivecan develop for one hour continuously the drawbar pullsgiven in Table II with a motor temperature rise not ex-ceeding 75 deg. Cent. Table II—Relations Between Drawbar Pull and SpeedDrawbar Pull Speed Kg. U>. 9,000 19,800 9,000 19,800 50 31 9,500 20,900 75 6,000 13,200 100 62 This locomotive can start a train of 350 tons (ex-clusive of locomotive) and bring it up to 75 kw (= ) speed on a straight line having a gradeof per cent
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Keywords: ., bookcentury1900, bookdecade1900, bookpublishernewyorkmcgrawhillp
