. The Street railway journal . on each alternator panel; a double,low-tension bus-bar arrangement for flexible manipulation ofalternators with transformers and rotary converters, and separateammeters for each phase reading to 1200 amps. Synchronizing lamps and shunt transformers are used whenmachines are to be synchronized with bus-bars. The step-up static transformers, which are located in a gallery, are of the Westinghouse oil-cooled type, and are seven in number(two sets of these each and one spare), each being of 200-kwcapacity. The ratio of conversion is 1 to 50. Two fuse cut-outsare plac
. The Street railway journal . on each alternator panel; a double,low-tension bus-bar arrangement for flexible manipulation ofalternators with transformers and rotary converters, and separateammeters for each phase reading to 1200 amps. Synchronizing lamps and shunt transformers are used whenmachines are to be synchronized with bus-bars. The step-up static transformers, which are located in a gallery, are of the Westinghouse oil-cooled type, and are seven in number(two sets of these each and one spare), each being of 200-kwcapacity. The ratio of conversion is 1 to 50. Two fuse cut-outsare placed on the low tension, or machine side, of each trans-former, and the usual delta connections are made. These trans-formers on both primary and secondary windings are arrangedfor cutting in or out coils or sections for voltage adjustment. The 300-kw rotary converters are installed in the power housefor handling the sections of the line adjacent to the power rcrtaries are started by an induction motor direct-connected. STANDARD CAR to the armature shaft, and synchronized by means of lamps con-nected on one side to bus-bars and on the other to the alternating-current side of the rotaries. The switch controlling the startingmotor is of the double-throw type, arranged for high and lowvoltage connections to transformers. Consequently, with oneposition of the switch the motor develops a speed slightly in ex-cess of the synchronous speed, and with the other position a speedbelow it. This permits of the proper speed being reached, as in-dicated by the synchronizing lamps. Each governor arm of the 750-hp engine, driving the alternator,is equipped with a series-wound J4~hp, 125-volt Sprague electricmotor for controlling the speed of the engine in synchronizinggenerators. The control of this motor is from special switchesand rheostats on the switchboard. Lead encased cables are used for connecting the alternator unitswith the switchboard and transformers, and these are carriedun
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectstreetr, bookyear1884
