The reason why it stopped halfway through is because it has 2 levels, the lower one is for normal lines, and the higher one [which is the one seen here at the end] is for high speed lines. It is so that larger trains [e.g. sleeper trains] can pass through. At the exit of the high speed line, there is a sign telling the driver to put the pantograph to the low height, and vice versa. Usually there is a knob in the driver cab to select whether the pantograph is up or down, and another knob to select between high speed mode and normal mode. Normal mode has the lower pantograph level while the high speed mode has the higher pantograph level. Once the train has detected that the pantograph is at the right height, it activates the systems in the train. The train can switch power while moving as well at any speed, but it's recommended to slow the train down to 25-30 mph [40-50 kmph]. Not being diligent of the signs can cause a pantograph strike.
No its a normal line. For freight corridor i.e for double Decker freight trains, railway use high raise lines and for that lines, high raise Pantographs are manufactured. The length of the high raise pantographs are larger than normal pantographs. And also pantographs adjust themselves automatically wrt to the height of the ohe wire
Sounds like quite the dumb system and it looked like all pantographs with a sort of slow down in the middle so it doesn't smack the catenary. Why wouldn't they just have the overhead line lower slowly compressing the pantograph. Not like it's a double cargo line with a massive gap between loco roof and overhead line
@@TheRealDorranno he is correct pantograph are uplifted with the help of hydraulics so the pantographs can adjust themselves according to the height of the wire. If there is no wire then the pantograph will rise to it's full length till the wire is connected to it. In double stack freight region high raise pantographs are used which are bigger than this shown in the video and they can rise very high up
To increase the contact area, the contact strip is designed in such a way that wear and tear should happen evenly that is why the OHE is laid in a zig zag manner.
