. The Street railway journal . small pneumaticmotor controlled by electro-magnetic valves,and may be turned so that its voltage either op-poses or aids that of the auto-transformer, anyamount within the capacity of the the off position, the full voltage of theregulator is opposed to the 230-volt circuit ofthe auto-transformer, thus giving a low voltagefor starting the motors. At the full-on posi-tion the entire voltage of the regulator isadded to that of the 230-volt circuit of theauto-transformer, giving the proper voltagefor full-speed running. The regulator can beleft indefinit
. The Street railway journal . small pneumaticmotor controlled by electro-magnetic valves,and may be turned so that its voltage either op-poses or aids that of the auto-transformer, anyamount within the capacity of the the off position, the full voltage of theregulator is opposed to the 230-volt circuit ofthe auto-transformer, thus giving a low voltagefor starting the motors. At the full-on posi-tion the entire voltage of the regulator isadded to that of the 230-volt circuit of theauto-transformer, giving the proper voltagefor full-speed running. The regulator can beleft indefinitely in either of these, or in anyintermediate position, and thus the car canbe run at any desired speed. The reverseris operated by means of two pneumaticthrowing; it forward and the other The motors are permanently connected in parallel, the ad-vantages ordinarily derived from a series-parallel arrangementbeing obtained directly through the use of different positionsof the induction regulator, without changing the connections. FIG. 8.—CIRCUIT BREAKER AND AUTO-TRANSFORMER ON CAR EQUIPPED WITHA. C. SINGLE-PHASE APPARATUS cylinders, onebackward. Air isadmitted to either cylinder when desired by means of a mag- of the motors with respect to each other. As the motor voltageis independent of the trolley voltage, a standard of 250 volts hasbeen adopted, irrespective of the voltage of the trolley.
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectstreetr, bookyear1884
