The Calculation of Radio and Corona Characteristics of Transmission-Line Conductors

A method of calculating the corona and radio-interference generating characteristics of either single or bundled transmission-line conductors is presented. Briefly the calculations are made in six steps by following the simple procedure outlined in the section "Method of Calculation." The concept of representing a bundled conductor by an "equivalent diameter" is presented and confirmed by the test results. Using this concept, it is shown that a single 1.602-inch-diameter ACSR conductor is approximately equivalent to a 2-conductor bundle of 795-MCM ACSR "Drake" conductors or a 3-conductor bundle of 477-MCM ACSR "Hawk" conductors. Likewise a single 1.75-inchdiameter conductor is approximately equivalent to a 2-conductor bundle of 954-MCM ACSR "Cardinal" conductors.