IMMUNISING DELHI MAIN INTERLOCKING READY FOR 25 KV 50 HZ ELECTRIFICATION
Electrification of the Delhi-Calcutta route of Indian Railways required progressive conversion of the Delhi controls so that signal equipment would be unaffected by the high-voltage ac traction power. The modifications, the first three of which are to limit induced voltages in signalling circuits to about 120 V, consisted of replacement of unscreened cables; modification of switch and various other circuits; modification of power supply; and replacement of 50 Hz double-rail track circuits by high-voltage impulse or dc track circuits.
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Availability:
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Corporate Authors:
IPC Transport Press, Limited
Dorset House, Stamford Street
London SE1 9LU, England -
Authors:
- Gupta, K
- Publication Date: 1977-3
Media Info
- Features: Figures; Photos;
- Pagination: p. 112-114
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Serial:
- Railway Gazette International
- Volume: 133
- Issue Number: 3
- Publisher: DVV Media Group
- ISSN: 0373-5346
- Serial URL: http://www.railwaygazette.com/about-us.html
Subject/Index Terms
- TRT Terms: Electric power supply; Inductive interference; Railroad electrification; Signaling; Track circuits
- Old TRIS Terms: Interference control
- Subject Areas: Energy; Railroads;
Filing Info
- Accession Number: 00156257
- Record Type: Publication
- Source Agency: Railway Gazette International
- Files: TRIS
- Created Date: Jul 19 1977 12:00AM