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Pantograph

Current collector of the Contact line, by the locomotive or electric traction means. It is composed of a part in direct contact with the contact line, called creeping (skid), and a supporting frame, which serves to keep the creeping material adherent to the same line of contact. The pantograph / contact line interaction represents one of the most critical factors of circulation with electric vehicles, for which the infrastructure managers are in the testing phase diagnostic means, able to detect potential abnormalities when trains pass, while in some railways they have been taken video recordings when leaving the depots to record the status of the pantographs themselves

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WikiRail

WikiRail