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Railway ‘V’ Style Frame Four Foot Point Circuits With Insufficient Track Locking This section shows two complete point circuits demonstrating insufficient track locking. Utilising an extra track circuit V’ Style Frame Four Foot Point Circuits With Insufficient Track Locking Abbreviations Electrical Supplies BX100 – Live side of single-phase 100V AC feed NX100 […]
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Right-hand Turnout, Single End, Without WL Right-hand Turnout, Single End, With WL Right-Hand Turnout, Double Ended, Without WL Right-hand Turnout, Double Ended, WL At ‘A’ End Right-hand Turnout, Double Ended, WL At ‘B’ End Left-hand Turnout, Single End, Without WL Left-hand Turnout, Single End, With WL Left-hand Turnout, Double Ended, […]
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Railway WL Control Circuits If a conventionally wired set of points were thrown from N to R and the Reverse contacts did not make, due to a mechanical fault or a badly adjusted indication arm for example, the WL would drop in to its port and the WKR will not energise. If an attempt is […]
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Railway Switches Types There are two types of switches (i) Stub Switch (ii) Split Switch Stub Switch 1. Earliest type of switch. No separate tongue rails are provided 2. Some portion of the main tracks is moved from side to side 3. It is obsolete now and no more in use on Indian Railways […]
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The Detection Circuit Figs 1.12 and 1.13 show a typical detection circuit for a single ended right-handed set of Four Foots. To change the phasing of the ‘R’ side the BX and NX feeds need to be changed by 180º (R1 and R2 feeds swapped around). In the detection circuit this is achieved by using […]
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Railway Point Control Circuit Point Control Circuit :- Fig 6.2 shows the Point Control circuit for a right hand turnout set of Clamplocks. The WL detection contacts are cut into the NW and RW control lines to prevent the WL being damaged by the drive lock slide pushing against the thin WL dab. The full […]
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