Sir these lessons are so helpful and your way of teaching damn good 👍. Missing those days when we used to go for meetings and you used to explain me all this on the way. Big ups to this channel 🙏🙏
You show cross bonding by connecting all rails of two tracks. Wouldn't this interfere with signalling track circuits for detecting the presence of trains?
No it will not have that much impact as current is 50Hz. Max harmonic level are 40th harmonic... So spectral component will 2kHz freq but of very low amplitude... And nowadays in signaling we use AFTCs (9kHz to 21kHz) or CBTC system which are immune to such disturbance....
@@railwayengineeringinsights6463 thanks. It's several decades since I worked on railway signalling on non electrified routes which used DC track circuits
Yes true... In mainline they used... But nowadays they go for AFTC in case of track circuits...However in AFTCs also we cannot bond directly... We use impedance bonds...
