. The Street railway journal . FIG. 1. -EXTERIOR VIEW OF 400-KW PORTABLE SUB-STATION,POTENTIAL 16,500 OR 33,000 VOLTS from high-tension transmission systems. Since that dateseveral such equipments have been manufactured, and haveproved themselves useful adjuncts to the lines on which theyare employed. As was at first anticipated, they have been ofgreat service in dealing with an occasional abnormal rush of. way. The equipment under consideration at present forms a400-kw plant. Fig. 1 shows an external view of the Cincinnati & ColumbusCompanys portable sub-station, taken before it left the work
. The Street railway journal . FIG. 1. -EXTERIOR VIEW OF 400-KW PORTABLE SUB-STATION,POTENTIAL 16,500 OR 33,000 VOLTS from high-tension transmission systems. Since that dateseveral such equipments have been manufactured, and haveproved themselves useful adjuncts to the lines on which theyare employed. As was at first anticipated, they have been ofgreat service in dealing with an occasional abnormal rush of. way. The equipment under consideration at present forms a400-kw plant. Fig. 1 shows an external view of the Cincinnati & ColumbusCompanys portable sub-station, taken before it left the worksat Schenectady. In this instance the machinery and apparatusare installed in a freight car of standard design. Figs. 2 to 4are internal views, showing the arrangement of machinery,etc. Great attention has been paid to the location of theheavier units, to avoid undue strain beingbrought on any part of the car or machineryduring the time it is in motion. The rotaryconverter is placed at one end of the car andthe transformer at the other, in each case thecenter of gravity being immediately over thetruck. An equipment consisting of a rotary con-verter and transformer has been found byexperience to be preferable to employing asynchronous motor generator set. The for-mer not only has the advantage as regardsweight, but it is also less costly, has a betteroverload capacity and the connections aresimpl
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectstreetr, bookyear1884
