. The street railway review . ed tw-o-phase on the secondary side and feeding separate trolleysections from the Uvo phase-. 644 STREET RAILWAY REVIEW. [Vol. XIV, No. 9 llic car .iliiiwii ill ilu- ncciiiii|i:iiiyiiig is ci|iiippc(l withci>ni|iriisnliil iiii>liir> .iiiil wciftlis Ions williiiiil passriiRcrs. TlieIwdy is iiii>iiii(i-(l niiiiii Mrill No. ij trucks with »> ft. wlu-c-l liasc, eachtruck carryiii!? two motors. 1-Iach of the iiioturs is cqiiivalcnt to a50-h. p. direct current motor, according to standard railway rating. Ilie compensated motor consist
. The street railway review . ed tw-o-phase on the secondary side and feeding separate trolleysections from the Uvo phase-. 644 STREET RAILWAY REVIEW. [Vol. XIV, No. 9 llic car .iliiiwii ill ilu- ncciiiii|i:iiiyiiig is ci|iiippc(l withci>ni|iriisnliil iiii>liir> .iiiil wciftlis Ions williiiiil passriiRcrs. TlieIwdy is iiii>iiii(i-(l niiiiii Mrill No. ij trucks with »> ft. wlu-c-l liasc, eachtruck carryiii!? two motors. 1-Iach of the iiioturs is cqiiivalcnt to a50-h. p. direct current motor, according to standard railway rating. Ilie compensated motor consists of .in annular laminated ironfield with a ilistribtited winding similar li> that of an induction armature provided with a commutator of the same type ofmechanical construction found on direct current railway motorarmatures. The motors arc wotmd for 200 volts and are perma-nently connected two in series. They are fed from a joo-volt sec-ondary <if an So-kw. air blast stcp-(lowu transformer carried on the. 1;. K. FOR ( A«. cars. The distributed field winding is designed to fully compensatefor the armature reaction so that the power factors are relativelyhigh throughout the range of operation. The motor is designed sothat at the free running speed of the car, which is the speed mostgenerally used in suburban work, the power factor ;mu1 efficiencyare nearly at their values. The motor characteristic curves are shown herewith for bothalternating current and direct current running, from which it willbe seen that the compensated alternating current motor varies itsspeed with the load and is tberefnrc well adapted for operatingtrains over a line of irregular profile. The commutation of themotor is satisfactory for both alternating and direct current linesand good commutation is secured without resort to high which are liable to give trouble in case of sustained heavyoverloads. There is a comparatively small addi
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Keywords: ., book, bookcentury1800, bookdecade1890, booksubjectstreetrailroads
