28-02-2012, 03:02 PM
When DC single rail track circuits are used due to one of the rails being used as a return conductor ,all the track circuit leads are still connected onto both rails how is it that the pos and neg from the abutted trackcircuits don,t affect each other.
What is the level of traction return current that flows though the return rail?
Why does it not effect the track circuit ?
I,ve looked on line for a simple answer to this but have failed to find one, I install these single rail Track Circuits all the time and wonder ,how can that pos and that neg from different track circuits be right next to each other without a block joint, and then add the traction return current into the mix.
Can anyone help with my confusion on this subject ,please try to make as simple as possible. Thanks.
What is the level of traction return current that flows though the return rail?
Why does it not effect the track circuit ?
I,ve looked on line for a simple answer to this but have failed to find one, I install these single rail Track Circuits all the time and wonder ,how can that pos and that neg from different track circuits be right next to each other without a block joint, and then add the traction return current into the mix.
Can anyone help with my confusion on this subject ,please try to make as simple as possible. Thanks.