Indian Railway Signalling – Page 15 – Railway Signalling Concepts

Railway signalling Solid State Interlocking SSI

January 7, 2022June 7, 2022admin1 Comment

Railway signaling Solid State Interlocking SSI SSI Information Flow Classification of SSI SSI can be classified on the basis of –Type of Redundancy used Dual HW Dual HW with 100% stdby TMR SW redundancy –Whether Object Controllers are provided or not –Type of Data Programming used – Free wire or Geographical Object Controllers Types […]

Railway Power Supplies, Earthing and Relay Rack

January 6, 2022June 7, 2022adminLeave a Comment

Railway Power Supplies, Earthing and Relay Rack Power Supply on Relay Rack : • For Vol.2 the power supplies shall be extended from Power Rack to busbars located on relay rack. • Power supplies shall be located on a separate rack called power supply rack, • The power supply, transformers, filters and other power supply related equipments […]

Railway Eliminate/Reduce Electrostatic induction

January 5, 2022June 8, 2022adminLeave a Comment

Eliminate/Reduce Electrostatic induction The electrostatic voltage falls steeply as the distance of separation increases. It would therefore be desirable to shift the overhead alignments as far away as possible. This is not possible in the signaling circuits. They have to be nearer to the track, to cater for making connections to signals, tracks, points, etc. […]

Railway Track Switching Stations

January 4, 2022June 8, 2022adminLeave a Comment

Railway Track Switching Stations Switching stations 1. Can be 2. Feeder stations – where electricity from Electricity Supply industry is brought and is supplied to OLE, or 3. Track Sectioning cabins or Track Sectioning Locations – which perform function of switching, sectioning, paralleling and electrical protection. 4. Are unattended, kept closed, locked and alarmed for […]