. Electric railway journal . ly in connectionwith the Edison circuits. Two 150-light arc generators aredriven by a 200-kw motor. A 500-kw, 500-volt motor-drivengenerator has been installed to feed into a downtown powercircuit. The motor of this set is a 6600-volt induction machinewhich during the daytime takes current from the substationtransmission bus fed from the companys main generating sta-tion. In addition to its main generating station, the company op-erates a smaller station close to the center of the commercialdistrict, in which steam is generated at 160 lb. pressure and re-duced to 5
. Electric railway journal . ly in connectionwith the Edison circuits. Two 150-light arc generators aredriven by a 200-kw motor. A 500-kw, 500-volt motor-drivengenerator has been installed to feed into a downtown powercircuit. The motor of this set is a 6600-volt induction machinewhich during the daytime takes current from the substationtransmission bus fed from the companys main generating sta-tion. In addition to its main generating station, the company op-erates a smaller station close to the center of the commercialdistrict, in which steam is generated at 160 lb. pressure and re-duced to 5 lb. for distribution in heating mains. The high-pres-sure steam is used also to generate current for power circuitsand for an Edison circuit load. At night, when the load on the500-volt power circuit falls off, the 500-kw motor generatorset connected with it in the substation automatically takes powerthrough the tie line to the steam-heating station and operatesas a 6600-volt motor generator delivering current to the light-. Combined Office and Substation in Kansas City, Mo, ing companys 6600-volt buses. By this arrangement the fullestadvantage is realized from the steam at the heating plant. With the addition of the new apparatus to the substation andthe erection of office floors above the substation, the powerdepartment has rearranged the incoming and outgoing linesand placed them all underground. PERFORMANCE OF AUTOMATIC BLOCK SIGNALS INHUDSON TUNNELS A remarkable record of signal operations was made by theHudson & Manhattan Railroad during the month of January,1911. Out of a total of 8,916,157 movements of signals, auto-matic stops and interlocked switches there were only fourfailures, involving a total of seven minutes of train four failures occurred with the automatic signals, whichmade 5,515,441 movements. No failures were recorded againstthe automatic stops, which made 2,821,443 movements, oragainst the interlocked switches, which made 579,273 move-ments.
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