. Electric railway journal . on removed by applying several strokes with thehand pump. If the pressure gage indicated that thepinion was abnormally tight, the pinion was heatedagain and the jack reapplied. Portable Substation at Pittsburgh The Pittsburgh Railways Company, one of the firsttraction systems to install an especially designed port-able substation car, has recently made public the oper-ating costs for its first year of service. During thistime the station was in use intermittently for periodsequivalent to about six months of continuous operating data follow: Operating
. Electric railway journal . on removed by applying several strokes with thehand pump. If the pressure gage indicated that thepinion was abnormally tight, the pinion was heatedagain and the jack reapplied. Portable Substation at Pittsburgh The Pittsburgh Railways Company, one of the firsttraction systems to install an especially designed port-able substation car, has recently made public the oper-ating costs for its first year of service. During thistime the station was in use intermittently for periodsequivalent to about six months of continuous operating data follow: Operating Data for One Year Output 255,190 kw-hr. Cost of operation : Wages $1, Supplies Transportation and maintenance Total $1, Operating cost per kilowatt-hour output for period of one year $ The substation, consisting of a 500-kw rotary con-verter, transformer and the necessary switching appa-ratus mounted on a double-truck steel car, was furnishedby the Westinghouse Electric & Manufacturing Com-. PITTSBURGH RAILWAYS—PORTABLE SUBSTATION INOPERATION AT CHARLEROI, PA. pany. The cost of this outfit, complete and ready foroperation, was between $20 and $22 a kilowatt. Thisis considerably lower than the cost per kilowatt of theaverage small substation. The substation which was placed in operation in Oc-tober, 1913, was first used to help out an overloadedindustrial substation until a new one, with adequate ca-pacity, had been constructed; next at a point where acountry fair was overloading the local substation, andfinally to delay for several months the starting of a smalland inefficient steam plant which was used during thewinter months to carry the peak. The car, upon which the converting apparatus ismounted, was supplied by the Railway & Industrial En-gineering Company of Pittsburgh. It weighs approxi- 1040 ELECTRIC RAILWAY JOURNAL [Vol. XLV, No. 22 mately 24,000 lb., and is constructed entirely of steel,with the exception of the window sash and doors.
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