. Baltimore and Ohio employees magazine . ower, in Baltimore. It has been de-cided to abandon the storage batteryand increase the capacity of the sub-station by the addition of a 2,000 kilowattsynchronous converter. Most of the electric energy used in Bal-timore is generated at the Holt woodHydro-electric station at McCalls Ferry,on the Susquehanna River, about twenty-four miles above the Baltimore and Ohiobridge at Havre-de-Grace, Md. Theelectricity is generated at a pressure of 11,000 volts by vertical generators, whichare direct connected to reaction energy is then passed throu
. Baltimore and Ohio employees magazine . ower, in Baltimore. It has been de-cided to abandon the storage batteryand increase the capacity of the sub-station by the addition of a 2,000 kilowattsynchronous converter. Most of the electric energy used in Bal-timore is generated at the Holt woodHydro-electric station at McCalls Ferry,on the Susquehanna River, about twenty-four miles above the Baltimore and Ohiobridge at Havre-de-Grace, Md. Theelectricity is generated at a pressure of 11,000 volts by vertical generators, whichare direct connected to reaction energy is then passed through trans-formers, where the voltage is increasedto 70,000, at which pressure it is trans-mitted to the receiving and distributingstation in the outskirts of the voltage is reduced to 13,200,for transmission about Baltimore. Theelectric current is received at this volt-age at the Mt. Royal sub-station and isstepped down to 460 volts and changedfrom three to six phases, in which formit is impressed upon the alternating cur-. HOW THE THIRD RAIL LS COVERED AT STATIONS. SAFETY FIRST AS WELL AS STEAM OPERATION APPLIES TO ELECTRIC 28 THE BALTIMORE AND OHIO EMPLOYES MAGAZINE rent side of the synchronous rotary con-verters. The power leaves the conver-ters as direct current, at a voltage of 650,and after passing through the switch-board enters the third rj^iil distributingsystem. The original overhead system of powerdistribution provided a contact conductorof two Z bars so arranged as to form abox-like structure with a slot in the bot-tom. Outside of the tunnels this wassupported from towers b} a catenaryconstruction and in the tunnels b} directhangers. In this overhead structure thecollector shoe, attached to the locomo-tive by pantagraph, was allowed to would be expected, from the presentknowledge of methods of collecting cur-rent, the system was unsatisfactory, andthe presence of gases from steam loco-motives resulted in high maintenancecost. In 1902 the over
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbaltimo, bookyear1912
