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 Interlocking of Level Crossing Gate LC gate LC gate interlocking method – I 1. The level crossing annunciation relay (LCAR) is kept normally energized in the gate lodge when no route over the level crossing has been set. 2. Any route is set, the concerned ASR/TRSR/TLSR drops which in turn de-energizes LCAR. 3. This […]
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Railway HR POINT NCR RCR WLR PCR Circuits At HR stage all the conditions to be satisfied for clearing a signal are proved. Crank handles are ‘in’, i.e. proved by CHLRs up and CHFRs down. Route Release Relays have de-energized after the last train movement i.e UYR1, UYR2 etc., are down. No cancellation is initiated […]
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NWKR/RWKR, NWR/RWR, POINT OPERATION CIRCUIT, WCR, POINT OPERATION, WNKR/WRKR, NWKR/RWKR CIRCUIT NWKR/RWKR CIRCUIT * With WLR, RCR/NCR picked up, NWKR/RWKR drops. * There by all indication relays& its repeater relays (NWKPRs, RWKPRs, NWKSRs, RWKSRs) drop. NWR/RWR CIRCUIT With WLR up, all indication relays drop, NCR/RCR up, NWR/RWR will pick up at location POINT […]
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Railway Signalling Track Circuit Introduction 1. A Track circuit is an Electrical circuit of which the running Rail of a Railway track forms a part. It is employed for indicating the presence of Trains and thereby for controlling Signalling and Block equipment. For the device Track circuit, the following truly holds good. 2. ‘No single […]
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RRI Free wired Route Setting Combined Indication & control panel Station Layout Point setting and locking sequence RRI-Free wired Route Setting Availability of selected route The control table specifies the controls required for route setting Generally when the route is initiated the following checks are made to confirm that the selected route is free […]
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RRI LAYOUT WITH ALL BUTTONS FOR SIGNALS POINTS & ROUTES SIGNAL BUTTON CIRCUIT Any button pressed, the concerned signal button relay will pick up providing all other buttons relays are dropped and no button remain pressed. ROUTE BUTTON CIRCUIT Required route button is pressed to energize the route button relay POINT BUTTON CIRCUIT […]
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