Thales – Page 6 – Railway Signalling Concepts

RAILWAY SIX FOOT POINTS, CHAIRLOCK POINTS, CHAIRLOCK CIRCUIT CONTROLLER (DET.BOX), GROUND LOCK, CHAIRLOCK ELECTRICAL CONNECTIONS (L.H. TURNOUT), CLAMPLOCK POINTS PL&D

April 4, 2022June 8, 2022adminLeave a Comment

Railway Six Foot Points • Electro-pneumatic operation • Escapement and drive mechanism are Mounted outside the running rails • Can be used with Bullhead rail • Escapement, Lock and Detection as per 4 Foot Point CHAIRLOCK POINTS • Electro-pneumatic operation. • Air motor is mounted between the running rails. • There is no PL&D box […]

Platform Emergency Stop Plunger(PESP) Railway

March 6, 2022June 8, 2022adminLeave a Comment

Platform Emergency Stop Plunger(PESP) Railway Platform Emergency Stop Plunger(PESP) Railway :- * Five Emergency Stop Plungers shall be provided at each platform for the use of passengers and staffs to stop the train in case of emergency. * One Emergency Stop Plunger for each platform shall be provided in the Station control Room (SCR) panel. * […]

Ready to Depart Indicator Railway

March 4, 2022June 8, 2022adminLeave a Comment

Ready to Depart Indicator Railway Introduction: • RTDI will be provided on each platform where staff is assigned to assist in the departure of trains. • The indicator will normally be blank, but shall be commanded to display an unambiguous indication shortly before the train is ready to depart the platform. • From Relay Rack […]

Railway Electrification in UK

February 4, 2022June 8, 2022adminLeave a Comment

Railway Electrification in UK Prior to 1950s, direct current (DC) was only form of electrical energy used for traction purposes in UK 650 V DC Third Rail System 1. System provides nominal 650/750 V d. c. supplies to trains via a third rail mounted outside the running rails. Return path for traction current is via […]

Signaling Design Process Thales Projects

February 4, 2022June 8, 2022adminLeave a Comment

Signaling Design Process Thales Projects References for The Design process under which signalling system modifications shall be undertaken for JNUP project. 1. 3CU 00550 0295 PCZZA 2. 8BH 04002 5034 URZZA 3. 8BH 04002 5033 URZZA 4. 3CU 00550 0215 UNZZA 5. Bulletin B-0550-003 6. Bulletin B- 0550-006 7. 8BH 04002 5518 URZZA 8. LU Standard […]

Railway Eliminate/Reduce Electrostatic induction

January 5, 2022June 8, 2022adminLeave a Comment

Eliminate/Reduce Electrostatic induction The electrostatic voltage falls steeply as the distance of separation increases. It would therefore be desirable to shift the overhead alignments as far away as possible. This is not possible in the signaling circuits. They have to be nearer to the track, to cater for making connections to signals, tracks, points, etc. […]