Contact Wire

Definition

The contact wire is the wire that feeds the pantograph of the light rail train. This wire is supported by the messenger wire and has virtually no sag due to rigid metal hangers connecting the messenger and contact wires together.

Purpose

The purpose of the contact wire is to provide a consistent and reliable electrical connection to the pantograph of a light rail train, ensuring the continuous supply of power needed for operation.

Examples of Use

• Light rail systems use contact wires to transmit electrical power from overhead lines to the train's pantograph.
• Tram systems in urban areas utilize contact wires for efficient and reliable energy transfer.
• Electrified rail systems employ contact wires as part of their power distribution infrastructure.

Related Terms

• Pantograph: A device mounted on the roof of electric trains to collect power through contact with the overhead wire.
• Messenger Wire: A supporting wire that holds the contact wire in position, providing tension and stability.
• Catenary System: The overall system of overhead wires, including the contact and messenger wires, used to power electric trains.

Notes

Proper maintenance of contact wires and their supporting systems is crucial to ensure uninterrupted power supply and safe operation of electric rail vehicles.