overhead conductor

Contact shoes may also be used on overhead conductor rails.

Overhead conductors are a commodity supplied by several companies worldwide.

There are few examples of overhead conductor rails in France and this is the first at 25kV.

Thus the device allows the overhead conductors to pass into the conduit while serving as a seal to keep out water.

At higher voltages only suspension-type insulators are common for overhead conductors.

High-voltage overhead conductors are not covered by insulation.

Three-phase systems have the serious disadvantage of requiring at least two separate overhead conductors plus rail return.

During the electrification of the tunnel sections, for the first time in Germany, overhead conductor rail was installed on open line.

It is one of four lines in the world using three-phase electric power, requiring two overhead conductors, with the track forming the third conductor.

Overhead conductors are usually air insulated and supported on porcelain, glass or polymer insulators.

An advanced model based on a probabilistic approach for predicting aeolian vibrations of single overhead conductors.

Underground cables can be larger diameter because they do not have the constraint of light weight that overhead conductors have.

For overhead conductors, the rating is determined by the point at which the sag of the conductors would become unacceptable.

Sunbury, however, was a much smaller installation, employed overhead conductors, and hence was the first to "cross the tape."

Short overhead conductor rails are also installed at tram stops as for the Combino Supra.

Overhead conductors for high-voltage electric power transmission are bare, and are insulated by the surrounding air.

Overhead transmission is used otherwise because, for a given voltage level, overhead conductors are much less expensive than underground cables.

An overhead conductor uses the surrounding air to provide the necessary insulation, with ceramic or glass insulatorsmaintaining the insulation at support structures.

Among the upgrades are axle counters, mounting of an overhead conductor rail, new switches and new tracks.

The system delivered current by overhead conductor wires and was cheaper than alternatives using power rails and required fewer electrical sub-stations.

The recharging facility consists of a rigid overhead conductor enabling the train to be recharged via its pantograph.

Each HVDC transmission line has two parallel overhead conductors to carry the positive and negative feeds.

Other incidents have involved people being struck by moving loads, cranes contacting overhead conductors and cranes colliding with each other.

An overhead conductor uses the surrounding air to provide the necessary insulation and so the higher the voltage, the taller the pylon required to carry the lines.

(4) Where an external electric supply is provided, this is typically with overhead conductors or above-ground rails or (rarely) sub-surface electro-magnets.