The company has a group of cooperation teams engaged in the armor rod industry for many years, with dedication, innovation spirit and service awareness, and has established a sound quality control and management system to ensure product quality.
Armor Rods & Line Guards Materials: Rods – manufactured from either aluminum covered steel, aluminum alloy or galvanized steel Color code and center mark – establishes alignment of rods during application and identifies conductor size Identification tag – identifies catalog number and conductor details Industry Knowledge:
ARMOR RODS AND LINE GUARDS
Armor Rods and Line Guards have overlapping purpose – to protect conductors from fatigue-damage by providing a stiffening support for suspended conductors. They also protect from abrasion-damage at attachment points by providing a buffer between the conductor and the clamping connector. They are both made up of sets of individual rods of the same diameter. When installed, the set of individual rods grip rigidly onto their respective conductors. Once each rod of the respective set has been installed, the set should evenly enclose the conductor along the length of the rods. Physically, the line guard sets are shorter in length and the individual rods are smaller in diameter. The application for line guards is typically found on light transmission lines with shorter spans, smaller conductor sizes and lower voltages. Armor Rods are recommended for applications where the conductor is clamped or suspended with bolted type connectors. Product Offerings:*
• Aluminum Armor Rods • Aluminum Line Guards • Aluminum Protector Rods • Galvanized Steel Rods • Alumo-Weld® Steel Rods
• EHV @ 250° C for respective suspension clamp & conductor application* • Application O.D. = (Rod O.D. X 2) + Conductor O.D.
General Recommendations
Armor Rods 1. Fargo ® Armor Rods are intended to protect conductors from stress and damage which can be caused by a bend, compression, abrasion or arc over. They are also designed to repair conductors which have sustained < 50% outer strand damage.* 2. Armor Rods should be considered as minimum protection for clamp style supports or suspension hardware for spans > 300 feet. 3. Armor Rods are designed to provide an extra degree of protection to the conductor at support points, not act as vibration dampers . In areas where vibration is suspected or known to occur, the use of Fargo ® 4-R Dampers is recommended.
Line Guards 1. Fargo ® Line Guards are intended to provide an extra degree of protection for the conductor against abrasion and arc over. They are also designed to repair conductors which have sustained < 25% outer strand damage.* 2. Line Guards should be considered as minimum protection for hand-tied spans ≤ 300 feet in urban areas with no history of vibration. 3. Line Guards should be considered as a cost saving alternate to Armor Rods when applicable. Note: HPS Distribution Ties are recommended as an improvement over Line Guards and hand ties, providing a stronger and more uniform tie.
*The degree of protection required is dependent upon line design, tension, temperature, and wind conditions. Contact HPS Connectors Business Unit for specific recommendations.
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