| 摘要 |
A method of installing a resistive element (12) along part of an optical cable (14) that extends between, and is supported by, towers of an overhead electrical power transmission system, comprises attaching one end of the element to the optical cable at a tower, feeding the element out along the cable from the tower, and attaching intermediate parts of the element to the optical cable if necessary. The method is characterised in that: (i) the optical cable is earthed at a location adjacent to the tower by attaching to the cable a grounding device that is electrically connected to the tower; (ii) the resistive element is attached to the optical cable at a position on the optical cable between the tower and the location at which the optical cable is earthed by the grounding device, and is fed out along the optical cable from that position; (iii) as the resistive element is fed out along the optical cable, it contacts the grounding device which provides a path to earth for induced electrical currents thereon.
|
