Contact Rail

Contact Rail

 

a rigid contact conductor that provides a sliding contact for the current collector of rolling stock (an electric locomotive or motorized car). It is made of soft steel, and its shape and cross-sectional dimensions are similar to those of standard track rails. The contact rail is fastened by insulators to brackets located on the ties.

Contact rails provide reliable contact for the current collectors of motorized cars or electric locomotives, which are fastened to their undercarriages. Vibration of the current collectors or separation from the contact rail must be prevented to avoid interruptions of the current-carrying circuit, sparking, and arcing, which damage the contact surfaces. Contact rails are used predominantly in underground railroads or subway systems and less frequently for open lines operated at a relatively low voltage (not exceeding 1,500 volts).

References in periodicals archive ?
Gap between the Contact Rail s Protection Board and the top of the Contact Rail
The head of the Moscow metro system, Ivan Besedin, told the Interfax news agency that the fire started in a "complicated technical junction linked to the contact rail.
An excited customer at the pub advised the couple to contact rail memorabilia sellers Grand Central Railwayana Auctions, and staff there described it as a "a significant find".
To book rail for groups of 10 or more, contact Rail EuropeOs Group Department at http://agent.
is replacing track and contact rail installations dating from 1928 in Philadelphia's Fern Rock Yard with a wide range of transit products sourced from L.
To contact Rail Europe call (08708 304 862, or see www.
The off-duty officer tried to contact rail staff after seeing a car parked on a level crossing - but seconds later the 5.
Framework agreement for the supply of arm support and headpieces composite material protection to the contact rail (900V) of the STIB Metro network.
Foster has begun delivery of 80ft rail sections, direct fixation (DFF) fasteners, insulated joints and contact rail insulators for the construction on the long delayed project which will modernize the subway to eliminate slow zones on CTA's Blue Line.
uk - for details of fast rail connections to Carcassone contact Rail Europe via the website at www.
Travellers who know the exact dates of their rail travel in France should also contact Rail Europe to buy special rate Prem's tickets, available until 14 days before departure.