BASIC TRACK CIRCUIT LIMITATIONS

The conventional steady energy DC track circuit, the coded track, single- and double-element AC, the single-rail, double-rail and jointless track circuits are discussed in terms of their variables and the basic limitations of 0.06 ohm shunting sensitivity and broken-rail protection. Source voltage, track relays, ballast resistance and rail impedance are explained for each case.

• Corporate Authors:

  Westinghouse Air Brake Company

  Wilmerding, PA  United States 
• Authors:
  • Carey, A J
• Publication Date: 0

Media Info

• Features: Figures;
• Pagination: 18 p.

Subject/Index Terms

• TRT Terms: Automatic train protection; Electric batteries; Fail safe systems; Failure; Railroad rails; Safety; Signal devices; Track ballast; Track circuits; Traffic signal control systems
• Uncontrolled Terms: Ballast; Broken rails
• Old TRIS Terms: Audio frequency track circuits; Signal systems; Train protection
• Subject Areas: Energy; Railroads; Safety and Human Factors;

Filing Info

• Accession Number: 00141423
• Record Type: Publication
• Report/Paper Numbers: Bull. N. 261 Tech. Rpt.
• Files: TRIS
• Created Date: Nov 3 1976 12:00AM