| 摘要 |
<p>Apparatus for monitoring overhead electric lines being suspended in the form of conductors (3) extending between poles or masts (1, 2), in particular for detecting an inadmissible high temperature in a conductor (3) under electric load, whereby the sag (H) of the conductor is determined by employing a sensor device (7). The sensor device (7) is sensitive to electromagnetic or acoustic waves, the propagation or pattern of which is adapted to be influenced by elongation of the conductor (3) under load and thereby an increased sag (H).</p> |
