. American engineer . Electric Locomotive for the Southern Pacific. 582 AMERICAN ENGINEER. Vol. 86, Xo. 11. being placed off center to give a passageway fmni the ends oftlie locomotive to the doors. The locomotives are equippedthroughout in accordance with standard railway practice andhave M. C. B. couplers, steel pilots, safety appliances, etc. Three running positions are provided on the controller for600 volts and two for either 1,200 volts or volts. Apneumatically operated series-parallel switch gives the properconnections for the running positions, and is operated by acontrol switch
. American engineer . Electric Locomotive for the Southern Pacific. 582 AMERICAN ENGINEER. Vol. 86, Xo. 11. being placed off center to give a passageway fmni the ends oftlie locomotive to the doors. The locomotives are equippedthroughout in accordance with standard railway practice andhave M. C. B. couplers, steel pilots, safety appliances, etc. Three running positions are provided on the controller for600 volts and two for either 1,200 volts or volts. Apneumatically operated series-parallel switch gives the properconnections for the running positions, and is operated by acontrol switch from either end of the cab. It is so designed. End Hood Removed Showing Dynamotor and Air Compressor. that the two motors comprising each pair may be connectedin series or parallel with each other at the will of the oper-ator. An interlocking arrangement has been provided thatmakes it iinpossible to operate the series-parallel switch exceptwhen the circuit on the main motor is opened. There are eleven notches on the master controller with themotors in full series; nine notches with the motors in series-parallel, and nine with the motors in full parallel. On 1,200or 1,500 volts the motors are operated only in full series and equipped with train line receptacles and jumpers and any num-ber of units can be controlled by one operator. A relay has been provided which will open all the circuitsof the motors whenever the trolley passes a specially ar-ranged aerial brush contactor. This insures an open circuitthrough the motors when the trolley passes a section is necessary to bring the master controller to the offposition be
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectrailroa, bookyear1912
