12-08-2010, 09:44 AM
For the second part of the question, which is for calculating Minimum Drop Shunt Value, why should we consider Minimum Ballast Resistance?
I think if we consider minimum ballast resistance, then there is chance that under DRY conditions the train may not shunt the track circuit because of more current passing through relay.
I was always thinking that we should consider Maximum ballast resistance (Infinity if not given) for calculating Drop Shunt Value.
Can anybody clarify this doubt?
Shivani Singh.
I think if we consider minimum ballast resistance, then there is chance that under DRY conditions the train may not shunt the track circuit because of more current passing through relay.
I was always thinking that we should consider Maximum ballast resistance (Infinity if not given) for calculating Drop Shunt Value.
Can anybody clarify this doubt?
Shivani Singh.