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 ?
Invitation to tender :Overhead contact rail and conventional line of contact, tunnels / clustered projects of Lake Brienz and Lopper I tunnel
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.
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.
Contractors replaced 46 miles of running rail and 33 miles of contact rail.
Tenders are invited for 100 - clamp, full, for 150 lb contact rail, with two bolts, silicone bronze, 3/4" w x 10 1/2"l, minimum threading of 4 3/4", with 2 flat washers, 2 lock washers and 2 nuts per bolt.
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.