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In appearance, high-tension cable is very similar to low-tension. In most other aspects, the two systems are very different. High-tension cable consists of three or four pre-stretched cables supported by weak posts. Currently, all high-tension systems are proprietary, that is, marketed under exclusive right of a specific manufacturer.
This project includes the installation of approximately 29 miles of high-tension cable barrier in the median of I-81 in Cumberland, Dauphin, Franklin and Lebanon counties. The project will also ...
High-voltage cables differ from lower-voltage cables in that they have additional internal layers in the insulation system to control the electric field around the conductor. These additional layers are required at 2,000 volts and above between conductors. Without these semi-conducting layers, the cable will fail due to electrical stress within ...
Bundled conductors reduce the voltage gradient in the vicinity of the line. This reduces the possibility of corona discharge. At extra high voltage, the electric field gradient at the surface of a single conductor is high enough to ionize air, which wastes power, generates unwanted audible noise and interferes with communication systems. The ...
Reinforcing rods are used at dead-ends and may sometimes be used on either side of a suspension support. Wind-induced aeolian vibration may be a factor on longer spans since ADSS cables have light weight, relatively high tension, and little self-damping. Anti-vibration dampers may be installed on each span near the support points if needed.
A lineman wearing equipment for hot glove work. In electrical engineering, live-line working, also known as hotline maintenance, is the maintenance of electrical equipment, often operating at high voltage, while the equipment is energised.