Key Points About Pre-formed Wire.
The armor rod preformed is pre-twisted from multiple single-strand helical metal wires. According to the conductor cross-sectional size, metal helical wires of a specified inner diameter are rotated in the helical direction to form a tubular cavity. The preformed armour rod is helically wrapped around the outer layer of the conductor. Under the tension of the conductor, the helix rotates, creating an anchoring force on the conductor. The greater the conductor tension, the tighter the helix rotates, and the greater the gripping force on the conductor. This article will detail the advantages of armor rods and its repair process.
armor rods for acsr is a connecting fitting used for overhead power lines and power overhead fiber optic cable terminals, suspensions, and joints. armor rods transmission line first appeared in the United States in the 1940s-1950s. Initially, the product was a helical protective strip used to protect bare conductors at stress concentration points and locations of electrical corrosion and arc burning. After years of development, armour rod fittings have been applied in power transmission and distribution, fiber optic communication, electrified railways, cable television, construction, and agriculture. armour rod in transmission line can be divided into nine categories according to their uses: tension pre-twisted wires, splicing pre-twisted wires, T-shaped branch pre-twisted wires, suspension pre-twisted wires, binding pre-twisted wires, anti-vibration pre-twisted wires, spacing pre-twisted wires, protective pre-twisted wires, and repair pre-twisted wires.
In 10kV lines, the repair process for damaged steel-cored aluminum conductors mainly follows the relevant regulations of the "Construction and Acceptance Specifications for Overhead Power Lines Below 35kV in Electrical Installation Engineering". Depending on the degree of damage to the conductor, the following repair processes are mainly used: 0-grade sandpaper polishing, winding repair, repair with a repair tube, and straight splice tube connection. From the perspective of repair methods, the time required to repair the conductor using 0-grade sandpaper polishing and winding treatment is relatively short.
armor rods conductor has the following advantages. (1) Pre-formed wire is easy to carry and eliminates the tedious labor of using clamps to secure the ends of the wire, thus accelerating construction progress and improving labor productivity;
(2) Installation can be performed smoothly without any tools;
(3) Construction is safe, eliminating the risk of injury caused by tools or clamps falling from heights due to worker negligence;
(4) Construction personnel can operate independently after a single training session;
(5) After installation, the appearance is smooth, beautiful, and elegant, causing no damage to the wire and providing uniform gripping force. It maintains the same tension whether installed horizontally or vertically.
