. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . er, 1926 In order to secure the advantages of alternating-currenttransmission and trolley and the direct-current tractionmotors, the motor-generator type of locomotive waschosen. This will draw power from an 11,000-volt single-phase, 25-cycle trolley. By using this tj-pe of locomotiveit is possible to take advantage of the inherent merits ofboth the alternating-current and the direct-current means high-voltage transmission to the locomotiveswith minimum copper loss and power loss
. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . er, 1926 In order to secure the advantages of alternating-currenttransmission and trolley and the direct-current tractionmotors, the motor-generator type of locomotive waschosen. This will draw power from an 11,000-volt single-phase, 25-cycle trolley. By using this tj-pe of locomotiveit is possible to take advantage of the inherent merits ofboth the alternating-current and the direct-current means high-voltage transmission to the locomotiveswith minimum copper loss and power loss, static unat-tended transformer stations along the railway line, lightoverhead construction, plus the advantages of direct-cur-rent traction motors and practically unlimited flexibilityof control in operation and regeneration. The main line of the Great Northern which extendsfrom St. Paul, Minnesota, to Washington, has the lowestruling grade to the Pacific Coast of any of our westernrailroads. The line is laid with heavy rails and is double-tracked at most of the critical points. The heaviest and. Profile of Great Northern Electrification most severe grades against load movement are encounteredin crossing the Cascade mountains in Washington, wherethe line is single track. Here the rise to the summit on bothsides is very precipitous, and on the west slope a verycircuitous route is required to make the ascent. Manysnowsheds are required to shelter this section of the linefrom the deep snow and slides during the winter season. There are several tunnels along the circuitous routeon the western slope, the longest of which is the Cascadetunnel, at the summit. This tunnel, constructed on a cent grade, is about miles long. The originalelectrification which is now undergoing modification, wasinstalled through this tunnel in 1909, mainly for the pur-pose of eliminating gas and smoke so as to expedite trainmovement. It extended from Tye at the west portal toCascade Tunnel Sta
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectrailroa, bookyear1901
