Overhead Wire

Overhead Wire

 

(also a trolley wire), a flexible wire of a contact system that provides a sliding contact for a moving current collector. Such a wire is solid, with two lateral, longitudinal grooves in its upper part that are gripped by the suspension fittings. Overhead wires usually have a circular cross section; less frequently an oval cross section that narrows vertically is used. The wires are made of copper, sometimes with strengthening additives. To reduce wear of the contact surface, bimetallic over-head wires (copper or aluminum wires with steel inserts) are also used.

References in classic literature ?
The storm had struck the overhead wire of the tramline, and one of the great supports had fallen.
One extra overhead wire needed and there would be no prolonged road excavation.
Protesters threw banana leaves on the overhead wire disrupting train services on Dakshin Barasat, Mathurapur on Nischindapur-Kakdwip and Kakdwip-Namkhana lines.
This is not the first time that this has happened, with a similar incident involving an overhead wire preventing movement on trains occurring a few weeks ago.
"He is then seen to get up, but it is not clear whether he actually made contact with the overhead wire. All the camera shows is a flash of electricity."
For use in outdoor remote and temporary locations, the CXT Explorer overhead crane system incorporates an electric overhead wire rope crane on top of a rugged steel structure supported by two standard ISO shipping containers.
When electric locomotive moves, the pallets stretches by the help of spring and touches the overhead wire. Subsequently, current supply start and train could move over the rail.
The incident happened at around 6.30am when a London Midland train, departing from Birmingham International to Coventry, snagged a piece of damaged overhead wire.
An overhead wire problem at Dunbar in Scotland meant rush-hour disruption for those travelling in the north of the region with the CrossCountry, East Coast and ScotRail train companies.
The use of inappropriate resin clips led to the overhead wire trouble that left thousands of passengers trapped on trains in Tokyo on Tuesday, officials of East Japan Railway Co., known as JR East, said Wednesday.
The Governor also directed the Chief Executive PESCO and GM Development PTCL both present on the occasion to immediately remove the underground as well as overhead wire from the building site to ensure smooth construction activity.
A recent statistic shows for instance, that 65 per cent of job site electrical shock fatalities are caused, not by improper electrical procedures, but by peripheral occurrences such as a crane coming in contact with overhead wire, putting workers on the ground in jeopardy.