Establishing a minimum contact force criterion to predict the loss of contact between a pantograph and a contact wire through on-line tests

We have performed on-line pantograph tests for a proto-type high-speed train in the high-speed test track in Korea since July of 2002. We reached 200 km/h on Nov. 7, 2002. In this study, we tried to measure aerodynamic forces on contact strips of a pantograph at 200km/h using two...