Conference,

INVESTIGATIONS ON THE LOAD OF CLAMPS OF OVERHEAD LINES

.
(1976)

Abstract

This report gives an outline of the investigations on the load of overhead-line-clamps which have been carried out until now at the Institut fur Elektrische Anlagen und Hoch-spannungstechnik of the Technical University of Vienna ( * ). The report points out the connection between temperature, wind-velocity, loadcurrent and bolt-torque of transmission line-clamps. Measuring method was the infrared thermography which allows the examination of parts of electric high-voltage circuits during operation, without touching them. The following interpretation of the measurements is given with respect to the influence of heat-reflection. aerodynamics, choice of reference temperature for computing etc. These influences and the necessary corrections give the accuracy limit of the applied method.

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