| furles@mail.croydon.ac.uk 2007-05-20, 1:25 pm |
| I've recently noticed something on overhead HV transmission lines that
I can't think of a purpose for. Close to each tower, there is
something hanging down below each conductor, including the Earth
conductor at the top of the tower. Where the conductors consist of
bundles of cables, each one will have these things fitted. They are
shaped like a letter 'L' turned on its side, with the short part
vertical and attached to the cable, and the horizontal longer part
running parallel to the cable, and below it by a few cable diameters.
the horizontal part looks like a foot or two long, but it's difficult
to judge from ground level, some distance away, These things are
fitted in pairs, pointing in opposite directions, and are fitted a few
metres from where the conductors are attached to the insulator strings
at each tower. There is usually one pair on each conductor on each
side of each tower, but occasionally a second or even third pair can
be found, at roughly equal spacings. They look almost like small
radio dipoles, but that wouldn't make any sense. Does anybody know
what they are?
|