. Electric railway journal . -matic inverse time limit relays. All of the transformer andsubstation equipment was furnished by the WestinghouseElectric & Manufacturing Company. OVERHEAD CONSTRUCTION One pole line is used to carry the trolley wire and three-phase transmission line, one telephone circuit and the feedercable, space being allowed on the crossarms for signalwires. The design is such that the road may ultimately beoperated at 1500 volts with 1200 volts for initialoperation. The design is initially for single track, perma-nently located on the right-of-way as one of the tra
. Electric railway journal . -matic inverse time limit relays. All of the transformer andsubstation equipment was furnished by the WestinghouseElectric & Manufacturing Company. OVERHEAD CONSTRUCTION One pole line is used to carry the trolley wire and three-phase transmission line, one telephone circuit and the feedercable, space being allowed on the crossarms for signalwires. The design is such that the road may ultimately beoperated at 1500 volts with 1200 volts for initialoperation. The design is initially for single track, perma-nently located on the right-of-way as one of the tracks ofa double-track road. In general five-point catenary bracket construction isused, span construction being employed only on long over-head viaducts and bridges and for short distances in thecities. Bracket construction is also used on the fifteensidings on the St. Joseph division and the eight sidings onthe Excelsior Springs division, a line of poles being seton the outside of the siding and opposite the main line of. K. C, C. C. & St. J.—Substation C, Springs Division poles. With this design, in case the line is double-tracked,the siding poles may be used as main line poles withoutchange. The pole spacing is 150 ft. on tangent line and less oncurves, the distance depending upon the degree of curva-ture. The accompanying table gives approximately thespacing used on curves, also span and pull-off hangerspacing. August 1913. | ELECTRIC RAILWAY JOURNAL 219 All sags are calculated to a temperature of 60 deg. Fahr. The sags above given are from the center of the mes-senger to the center of the trolley, equal to 22 in. at thebracket arm. All poles are Michigan white cedar, those carrying trans-mission lines being 40 ft. in length and without transmis-sion lines 35 ft. in length. All poles have a diameter of Table Showing Pole Spacing, Etc., on Different Degrees of Curves Hanger Pole Straight Hanger Brackets Degree of Curve Spacing Line Pull-off Sag 9 ft. tangent tc 1 cleg. 150
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