Insulated Rail Joints

Railway Insulated Rail Joints

Railway Insulated Rail Joints Railway Insulated Rail Joints :- Insulated Rail Joints (IRJs) are required to join together mechanically but no electrically. they are required for the follwing purposes: to define the limits of jointed track circuits, to provide insulation between rails at S&C, necessitating track circuit transpositions, where transpositions are required for other purposes, […]

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Minimum Length

Railway Bonding Details in D.C. Electrified Areas

Railway Bonding Details in D.C. Electrified Areas Railway Bonding Details in D.C. Electrified Areas :- Separate Track Plans and Negative Bonding Plans are only used on the former Southern Region. The impedance bond rail connections and the bond to bond connections must be shown on bonding plans. Traction return cross bonding between lines are the responsibility […]

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Jointless Track Circuits

Railway Track Circuit Configuration

Railway Track Circuit Configuration Double and Single Rail Track Circuit Configuration Railway Track Circuit Configuration :– Double rail track circuit arrangements have both rails fitted with IRJs to completely isolate a track circuit. Impedance bonds are used when a traction current return path is required. IRJs are not required with jointless track circuits and fewer […]

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Subsidiary Shunt Signals

Railway Signalling a Track Layout

Railway Signalling a Track Layout Base Information Signals at Stations Signals at Loops Simple Trailing Junction Trapping Protection Double Junction Left-hand double running junction Subsidiary Signals Signalling at Terminal Station Base information Base Information Signals at Stations Signals at Loops Simple Trailing Junction Trapping Protection Double Junction Left-hand double running junction Subsidiary Signals Signalling at […]

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