. Electric railway journal . ndedfrom a span wire which is attached to an insulator at eachend, the insulator being supported as shown. On the longerspan the catenary cable is carried on an independent hori-zontal arm with separate tie rod. The trolley wire is sus-pended from the auxiliary catenary by means of clips whichallow it to be slightly displaced with respect to this auxil-iary catenary. The trolley wire is zigzagged and it is alsosectionalized at the point where the pole spacing is changedfrom 164 ft. to 328 ft. Tn a tunnel on this section the sus- zontal anus. Tension take-up weights
. Electric railway journal . ndedfrom a span wire which is attached to an insulator at eachend, the insulator being supported as shown. On the longerspan the catenary cable is carried on an independent hori-zontal arm with separate tie rod. The trolley wire is sus-pended from the auxiliary catenary by means of clips whichallow it to be slightly displaced with respect to this auxil-iary catenary. The trolley wire is zigzagged and it is alsosectionalized at the point where the pole spacing is changedfrom 164 ft. to 328 ft. Tn a tunnel on this section the sus- zontal anus. Tension take-up weights are used on onepart of the line where the spans exceed 328 ft. LOCOMOTIVE REQUIREMENTS The requirements laid down for the six competing loco-motive builders were that the locomotive should be capableof starting and hauling on any part of the line a trailingweight of 400 metric tons; that with a trailing load of 280tons the maximum speed should not be less than and with a load of roo tons not less than Midi Electrifications—Motormans Cab of D. C. Motor Car The weight of the locomotives was limited to about 80tons with a maximum of 18 tons per axle and an adhesiveweight of 54 tons. It was specified that in running fromVillefranche to Tile, upon which there are many grades ofabout 2 per cent, the motors should be capable of sendingcurrent back to the line and of being so regulated that halfthe normal speed could be obtained if desired; that whenoperating at the normal voltage each motor should deliver -13 7
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