. The Street railway journal . trail cars of different types, and three combina- December, 1899.] STREET RAILWAY JOURNAL. 857 tion baggage, postal and passenger cars. The electriclocomotives are principally employed for freight traffic,but are also used for passenger service. Each has a ca-pacity of hauling 100 tons at a speed of 18 km. per hour ona grade of 2.\ per cent, or 50 tons at a speed of 36 km. perhour on the same grade; the latter when hauling passengercars. Each locomotive is equipped with two motors of150 , running 300 at 750 volts. They are placed in switches, of which
. The Street railway journal . trail cars of different types, and three combina- December, 1899.] STREET RAILWAY JOURNAL. 857 tion baggage, postal and passenger cars. The electriclocomotives are principally employed for freight traffic,but are also used for passenger service. Each has a ca-pacity of hauling 100 tons at a speed of 18 km. per hour ona grade of 2.\ per cent, or 50 tons at a speed of 36 km. perhour on the same grade; the latter when hauling passengercars. Each locomotive is equipped with two motors of150 , running 300 at 750 volts. They are placed in switches, of which one is for making and breaking thecircuit, and the other for transposing the handle for operating the former also controls thestarting resistance. This arrangement is to prevent theadmission of current unless all resistances are in circuit. Each locomotive also carries a transformer for reducingthe voltage from 75ovolts to 100 volts. Part of this low ten-sion current is used for operating a motor compressor for. LOCOMOTIVE WITH CAB REMOVED the middle of the locomotive and at either end of the sameshaft. The rotors are keyed to the shaft, while the statorsare mounted on the frame-work of the locomotive. Therotor shaft can be thrown into gear with either of twotrains of gears connected with the axles. One of these isfor use at the slower speed of 18 km. per hour, and theother for the higher speed of 36 km. For facilitating the the use of the air brake, and part for lighting the car. Thelower tension is preferred first, since it was hardly possibleto build so small a motor for 750 volts, and, second, toavoid introducing into all parts of the cars and locomotivea voltage of 750. Current for light and heat is takenfrom two phases only, although the compressor motor isconnected across all three phases. The motor compressor
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectstreetr, bookyear1884
