Information About Axle Counter,Track Structure Point & Crossing,Cable Schematics,CBTC Equipment,Overlaps,Core Plans,Earthing,ERTMS,Headway Calculation,Hot Axle Box Detectors,Interface Design,Level Crossing,Markers & boards,Bonding Plan Electrical Lockings,Route locking,Automatic Warning Systems AWS,Point Circuit,Equipment Treadle,Track Layout,Track Circuit Interrupters,Train Protection Warning System (TPWS),Slip Siding & Catch Siding.
Railway Direction Indicator Railway Direction Indicator:- Direction Indicator is a display along the trackside at critical locations that inform the train operator of the direction of the path ahead. 1. These indicators display a text sign based on the command of the system management center. The text will indicate the next route as being […]
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Railway Audio frequency jointless track circuit Railway Audio frequency jointless track circuit – Why AFTC? Jointless Immune to traction voltages Long length Both rails available for traction currents Broken Rail Detection in both rails Superior Train Shunt Detection End fed track circuit Operating frequencies Principle of operation “Electronic” separation joint TI21 […]
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Metro Rail Basic Components of Telecommunication Department The basic components of the telecommunication department can be stated as follows: 1. FOTS ( Fiber Optic Transmission System) 2. PIDS (Public Information Display System) 3. PAS (Public Address System) 4. Master Clock 5. CCTV (Closed Circuit Television) 6. Radio System 7. EPABX (Electronic Private Automatic Branch Exchange) […]
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Metro Rail Advantages of AFTC 1. Jointless Track Circuits except in point zone. 2. Immune to AC/DC Traction interference. 3. Suitable for Non-RE Section. 4. More Length. 5. Less Depends on R B Integrity (presence) of both rails are ensured in the circuit. 6. Both Rails are available for Traction Return Current. 7. Less […]
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Railway Level Crossings What is Railway Level Crossings? An intersection at the same elevation of a road footpath or bridleway and one or more rail tracks. Strike-in point The position on the approach to an automatic level crossing or other installation at which a train initiates the warning or closure sequence. Warning Sequence The order […]
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Railway Point Control Circuit & Point Indication Circuit Railway Point Control Circuit & Point Indication Circuit:– Fig 3.2 shows the point control circuit for an ‘N’ style frame. The differences here are the RC and NC lever bands which are used for the energization of the respective Reverse and Normal point auxiliary valves. Note that these lever […]
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