Influence of Contact Condition between Rails and Wheels upon Track Circuit Shunting. 2nd Report. Measuring Methods and Results of Track Circuit Shunting Resistance of Running Train's Wheelset.

Abstract

As the applied voltage to the wheelset on a track circuit fluctuates according to the distance between the track circuit's sending end and the train's position, it is very difficult to investigate the shunting resistance by the running train's wheelset. The authors proposed an experimental model test track circuit to keep the applied voltage to the wheelset on the track circuit constant. On the proposed track circuit, the shunting current flowing in the axle was measured so as to investigate the shunting resistance of the running wheelset. As the results, the behavior of the shunting current in the running wheelset was made clear with the shunting resistance of the single running wheelset. However, when the twin wheelsets shunted the circuit, the fluctuation of the shunting current of the wheelset was too significant to determine the shunting resistance.