. Electric railway review . Niagara Transmission Plant—60,000-Volt Insulator with Tieand Cable Protection. consisting of 19 strands, and having a total area of 642,800circular mils, being equivalent to 400,000 circular mils cop-per. The areas of cross section of the other cables arerespectively two-thirds and one-third that of the largest ordinary straightaway work, the cables lie in the topgroove of the insulator, and the pull of the cable is takencare of by means of two aluminum wire ties around the neckof the insulator. One of these ties extends each way alongthe cable. The tie itsel
. Electric railway review . Niagara Transmission Plant—60,000-Volt Insulator with Tieand Cable Protection. consisting of 19 strands, and having a total area of 642,800circular mils, being equivalent to 400,000 circular mils cop-per. The areas of cross section of the other cables arerespectively two-thirds and one-third that of the largest ordinary straightaway work, the cables lie in the topgroove of the insulator, and the pull of the cable is takencare of by means of two aluminum wire ties around the neckof the insulator. One of these ties extends each way alongthe cable. The tie itself consists of a single loop around theneck of the insulator, the two ends of the loop being twisted. Niagara Transimssion Piant—ividKing a Joint. around the line cable. The result is that the cable is notreally fastened to the insulator at all. but simply lies in thetop groove. The ties do not, therefore, perform any function,except when there is a pull on the cable tending to slideit in the direction of its length. The advantage of such atie is twofold. First, the full strength of the tie wire isdeveloped, which is not the case if a tie is twisted or pig-tailed, since, in such case, the tendency is for the tie to cutitself in two at the twist; secondly, the tie does not damagethe soft aluminum cable, as would be the case with mostof the other ties usually employed. In special work there is employed a cable clamp witha yoke extending each way on the cable. In every ca-e the cable near the insulator is protectedfrom possible arcs, so that in the event of an arc there will 76 ELECTRIC RAILWAY REVIEW Vol. XVIII, No. 3. be a chance for the circuit-breaker at the generating stationto op
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectstreetr, bookyear1906
