The pantograph is a crucial current-collecting device that must maintain stable contact with the overhead wire. Excessive roll or impact acceleration during operation can result in poor contact and mechanical damage. These anomalies are caused by factors such as speed variations, curve sections, or wire deviations. 2iSYS uses high-speed sensors to measure real-time changes in pantograph attitude (roll) and impact acceleration, automatically analyzing abnormal motion patterns.

Unstable contact or separation between the pantograph and the overhead wire can cause electrical discontinuity, leading to arcing — a potential source of thermal damage, communication interference, and fire hazards. Because arcs occur instantaneously, high-speed imaging and filtering technology are essential. 2iSYS captures the precise moment and location of arc events using high-speed imaging systems installed on the front and rear of trains and analyzes arc duration and intensity.