. The Street railway journal . onism;in other words, they clutch in only one position. The two motor generator sets are duplicates, each consisting CABLES LEAVING POWER HOUSE drives the motor generator sets. Thiscomes into play when synchronousmotors are driven as alternators inparallel with the transmission each end of the main dashpot thereis an auxiliary dashpot which is soadjusted as to require a certain inter-val of time before the governor canrespond to any change of load. As aresult of this the governor is prac-tically locked against any tendency tosurge or hunt when operatin
. The Street railway journal . onism;in other words, they clutch in only one position. The two motor generator sets are duplicates, each consisting CABLES LEAVING POWER HOUSE drives the motor generator sets. Thiscomes into play when synchronousmotors are driven as alternators inparallel with the transmission each end of the main dashpot thereis an auxiliary dashpot which is soadjusted as to require a certain inter-val of time before the governor canrespond to any change of load. As aresult of this the governor is prac-tically locked against any tendency tosurge or hunt when operating inparallel with transmission or othercircuits, and successful parallel opera-tion is easily accomplished.■ The rope drive connecting thelarger engine and the motor generatorsets consists of twenty-four ropes, installed as two inde-pendent transmissions of twelve ropes Switches A aud C are operated by siugteerauk X,which is connected with arm from switchhandle Y (1 and 3J Switcli B is operated by armfrom switch. LOW POTENTIAL SWITCHES 62 STREET RAILWAY JOURNAL. [Vol. XXIII. No. 2. of a 400-kw, direct-current 550-600-volt railway generator, anda 450-kw Stanley, type 15, 4500-volt, 7200-alternations, three-phase induction alternator, which operates normally as a syn-chronous motor. The motor generator sets have a speed of360 r. p. m. Under normal operating conditions the smalldirect-connected generating unit and one motor generator setare run, the steam set being necessary so as to meet instantdemands for power in case of failure of the transmission line.
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectstreetr, bookyear1884
