. Electric railway journal . poleshunt resistors, which are likewise built into the roof inorder to cool them thoroughly by constant air circulation. Aside from the favorable starting conditions which makethis locomotive desirable for switching as well as for regu-lar service, it offers a further advantage by its practicallycomplete independence of periodicity and of any speed limi- ciency of the locomotive proper (transformer, motor, gear-ing) up to the wheel circumference has been found to beas high as 88 per cent. The characteristic curves of oneof these motors are presented in an accompany
. Electric railway journal . poleshunt resistors, which are likewise built into the roof inorder to cool them thoroughly by constant air circulation. Aside from the favorable starting conditions which makethis locomotive desirable for switching as well as for regu-lar service, it offers a further advantage by its practicallycomplete independence of periodicity and of any speed limi- ciency of the locomotive proper (transformer, motor, gear-ing) up to the wheel circumference has been found to beas high as 88 per cent. The characteristic curves of oneof these motors are presented in an accompanying illus-tration on the next page. The reverser is directly connected mechanically and elec-trically. The reverser drum alters the direction of the flowof the current in the exciter winding and is operated magnets from the engineers stand. In exceptionalcases these magnets as well as all other contrivances canbe operated by hand. The group switch is installed abovethe motors and between the two reversers. This switch. Lbtschberg Locomotives—Views of Engineers Cabs and of Main Motors tation on account of synchronous speed. The normal speedof the locomotive is obtained at four times the synchronousmotor speed. The tractive effort and speed of the motoralso ranges within wide limits independent of the linevoltage, for on one hand care has been taken to compensateby suitable transformer taps any considerable decrease of permits the instantaneous connections of the two halves ofthe electrical equipment without any tools whatsoever. A motor-generator set jointly with four ordinary train-lighting batteries supplies the direct current for distancecontrol and lighting. After the motor and generatorswitches have been cut in by the engineer, all further 1052 ELECTRIC RAILWAY JOURNAL [Vol. XLII, No. 20. alterations in the connections, such as paralleling with thebatteries, are made by an automatic starter. motormans cabs, high-tension rooms, motormans cab contains the ai
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