ALTERNATING CURRENT FEEDING SYSTEM USING COAXIAL CABLE

In this system, the 25 kV 60 Hz catenary and the rail are connected every 5 to 10 km to a co-axial cable with a 2,000 sq. mm cross-section area. The diameter of the inner conductor is 28.5 mm, and that of the outer concentric conductor 55.0 mm. The mutual induction coefficient is high in the coaxial cable, therefore voltage drops in the return circuit are reduced, so that the allowable feeding distance can be lengthened. With this system, over a distance of 30 km, with a load current of 1,000A and a power factor of 0.8, voltage drop is 1,500 V as against 3,000 V with the autotransformer feeding system, and induction disturbance to telecommunication lines is reduced.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/oclc/4794138
• Corporate Authors:

  Japan Railway Engineers' Association

  2-5-18 Otemachi, Chiyoda-ku
  Tokyo,   Japan 
• Authors:
  • Maekawa, N
• Publication Date: 1976

Media Info

• Features: Figures; Photos;
• Pagination: p. 23-25
• Serial:
  • Japanese Railway Engineering
  • Volume: 16
  • Issue Number: 3/4
  • Publisher: Japan Railway Engineers' Association
  • ISSN: 0448-8938

Subject/Index Terms

• TRT Terms: Coaxial cables; Electric circuits; Inductive interference; Interference; Railroad electrification
• Old TRIS Terms: Feeder circuits
• Subject Areas: Construction; Railroads;

Filing Info

• Accession Number: 00157930
• Record Type: Publication
• Source Agency: International Union of Railways
• Files: TRIS
• Created Date: Aug 31 1977 12:00AM