Engineering Design Features of the Pinard-Hanmer 500-Kv Transmission Line

This paper deals with the engineering design features of the first 228-mile section of Ontario Hydro's 500-kv transmission line, the various design criteria, and related basic research and development work. It tells how these were used in selecting conductor stranding and tension, towers, foundations, guys and anchorages, insulation, hardware, and grounding, and emphasizes those aspects which are related to EHV (extra-high-voltage) transmission design.