T2 Wind Notion Resistance Conductor

Abstract

T2 conductor consists of two standard stranded conductors twisted about one another with a twist length of approximately 9 feet. Because of its aerodynamic and mechanical properties, the conductor is resistant to both galloping and aeolian vibration. Extensive field tests and laboratory tests were performed to verify the reduction in amplitude and frequency of wind induced motions with T2. As a result of these studies it is possible to string T2 to higher unloaded tensions and thus reduce structure height and/or the number, of structures per mile. An economic analysis is presented wherein the economic benefits of increased tension and decreased phase to phase spacing are measured against the increase in wind and ice loading characteristic of T2. It is concluded that the conductor offers significant advantages in decreased cost and/or increased reliability in common line design situations.