Leadville High-Altitude EHV Test Project - Single-Conductor Tests

The corona loss and radio influence (RI) levels from 2 years' testing on conductors designed to bracket the 230-kv operating range at high altitudes indicates smaller conductors than originally estimated will perform adequately. Results of high-frequency tests give values for radiation and attenuation at frequencies in the 10-to 200-mc (megacycles) range. Mechanical observations have shown conductor oscillations which are produced by heavy corona and damp conductor conditions.