Train 18 - तेरी प्यारी प्यारी Livery को किसी की नज़र न लगे

Sparking Pantograph Erode WAP4 22223 Lead SBC-HUP Train.
Video Link: click here
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PANTOGHAPH SPARKING In WAP4 Electric Locomotive - Indian Railways.
At 00:25 and 00:33 in video.
Loco:...
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22223 Erode WAP4 completing 20 years of service this year.
56523 / KSR Bengaluru City - Hindupur Passenger.
An electric spark is produced when there is a gap in the electrical path. The power supply to locomotive is from two overhead electric wires -
the lower, called contact wire and the upper, called catenary.
The contact wire which is generally made of copper is hung from the catenary wire in such a way that its level is always horizontal.
The collection of electric current is done by pantograph fixed on the roof of the locomotive.The pantograph is held by pneumatic pressure
in such away that it always exerts a vertical pressure against the contact wire. At the top of the pantograph a horizontal arm with
a carbon strip is provided which is the current collecting arm.