Select Pre-stretched Wire According To The Voltage Level Of The Line.

Overhead lines of different voltage levels use different types of conductors, tower structures and related accessories, resulting in different loads and electromagnetic environment conditions, which all impose requirements on the size and specifications of armour rod in transmission line. Industry standards recommend comprehensively determining the applicable model and mechanical grade of the armor rods conductor fitting based on factors such as conductor cross-section, line operating voltage level, tower type, and span.

In the design of medium- and high-voltage and ultra-high-voltage lines, power engineering teams usually use conductor specifications and system rated operating voltage as design inputs to determine the parameters of various prestressed fittings, including armor rod preformed. Different voltage levels of lines have different requirements for conductor load-bearing capacity and supporting accessories; therefore, it is necessary to match appropriate fitting types and sizes to adapt to operating conditions.