Railway Point Control And Lever Lock Circuits, Detection Circuits 

Point Control And Lever Lock Circuits Fig 4.1 shows the Point Control and Lever Lock circuits for a set of double-ended flat bottom four foot points. The main ‘W’ fuse has been replaced by a Miniature Circuit Breaker (MCB). The 12V D.C style F3 LPR has been replaced by a 100V A.C QNHX1 plug in […]

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The Lever Lock Circuit

Railway ‘N’ Style Frame Four Foot Point Circuits & The Lever Lock Circuit

Railway ‘N’ Style Frame Four Foot Point Circuits ‘N’ style frames are manually operated and at the time of writing (March 2007) are still in use, mainly on the SSL lines. However these will be gradually phased out as lines are re-signalled. In essence, the circuits used to control the points are very similar to […]

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Railway Power Supplies, Earthing and Relay Rack 

Railway Power Supplies, Earthing and Relay Rack 

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 […]

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Right Hand Turnout, Double Ended, WL At Both Ends

Railway Double Ended Turnout, WL At Both Ends

Right-Hand Turnout, Double Ended, WL At Both Ends   Left-hand Turnout, Double Ended, WL At Both Ends Flat Bottom Four Foot Point Circuits The widespread introduction of plug-in ‘Q’ style relays and track conversions from bullhead to flat bottom rail has brought about improvements in the design of the four foot point circuits. We shall […]

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