. The street railway review . ; in rciwER iiorsi;. side of the two oil-cnoled transformers, which redncc the current forthe motors from the hiis-har voltage of 2,300 volts to 220 transformers are monnted in the haseinent directly below themotor-generator exciter sets. Each of these exciter motor panelsalso has a hand operated oil-break main switch and a General Elec-tric Type-T A votage regulator. Ry the use of these regulators ismade possible the operation of the incandescent lighting systemdrawing current from the same generators which supply power forthe operati
. The street railway review . ; in rciwER iiorsi;. side of the two oil-cnoled transformers, which redncc the current forthe motors from the hiis-har voltage of 2,300 volts to 220 transformers are monnted in the haseinent directly below themotor-generator exciter sets. Each of these exciter motor panelsalso has a hand operated oil-break main switch and a General Elec-tric Type-T A votage regulator. Ry the use of these regulators ismade possible the operation of the incandescent lighting systemdrawing current from the same generators which supply power forthe operation of the street railway. This device auliMiiaiically accomplishes this result independently. (■.\RD FROM VOLTMliTEK BUS B.\RS. of speed changes and variations in load and without the use of afloating storage battery. The regulator operates by opening andclosing a shunt circuit across the exciter field rheostat or rheostats,thus keeping the exciter voltage at a point necessary for the main-tenance of constant voltage at the bus-bars. The moving parts arevery light and vibrate through short distances; thus they can operateat a higli rate of speed without any pumping or hunting effect. The rhcnstnl shunt circuit is opened and closed by a difTercntialwound relay taking current from the exciter bus-bars and being con-trolled by the floating main contacts. This relay and the directcurrent control magnet which also lakes current for its operationfrom the same source constitute the direct current portion of theregulator and maintain not a constant but a steady exciter alternating current portion of the regulator consists of a mag-net having a potential winding conn
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Keywords: ., book, bookcentury1800, bookdecade1890, booksubjectstreetrailroads
