. Electric traction for railway trains; a book for students, electrical and mechanical engineers, superintendents of motive power and others .. . Fig. 29.—Allis Chalmers 501 Electric Railway is from suspension side, and with closed field Fig. 30.—Buffalo and Lockport Railway Motor for 1898 removed. Capacity 160 horse power. 164 ELECTRIC TRACTION FOR RAILWAY TRAINS formations, 600-volt converter substations, extra labor required, andexpensive local distributing feeders for railroad-train service. Insulation of 1200 volts in motors and controllers increases th
. Electric traction for railway trains; a book for students, electrical and mechanical engineers, superintendents of motive power and others .. . Fig. 29.—Allis Chalmers 501 Electric Railway is from suspension side, and with closed field Fig. 30.—Buffalo and Lockport Railway Motor for 1898 removed. Capacity 160 horse power. 164 ELECTRIC TRACTION FOR RAILWAY TRAINS formations, 600-volt converter substations, extra labor required, andexpensive local distributing feeders for railroad-train service. Insulation of 1200 volts in motors and controllers increases the size,weight, and cost. Flashing from commutator to brush holders and tt)nearby frames, increases the operating expense and liability oftrouble. THREE-PHASE MOTORS. Three-phase motors are now established for a limited use. They areknown as constant-speed motors to distinguish them from series orvariable-speed motors; yet the speed of three-phase motors can bevaried in several ways, as will be detailed under Control of Motors. Theacceleration of three-phase motors is at a full rate up to full speed, andthis characteristic calls for high-power peaks on the motor, the line, andthe power plant. The speed of rotation depends upon the frequency of the
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Keywords: ., bookcentury1900, bookdecade1910, bookidelec, booksubjectrailroads
