Patent ID: 7298957
Filing Date: 2007-11-20
Classification: H02G

Abstract:
1. A method for controlling the amount of sagging of a power transmission cable due to a change in an operating environment of said cable, said cable being hung between two towers, the cable having a composite portion and a conductive portion, the method comprising: (a) mounting the cable between two towers, wherein when mounted between the towers said cable has a cable load; (b) stretching the cable to have a sag less than a desired sag; (c) releasing at least some of the tension to obtain the desired sag, wherein said releasing allows the composite portion to compress more than the conductive portion; (d) calculating a load magnitude carried by the composite portion; and (e) repeating acts (b), (c) and (d) until the load magnitude is at least 50% of the cable load, wherein the greater the magnitude of the cable load carried by the composite portion the lesser the change in the sagging due to said change in said operating environment of said cable.