GlossaryEN1 min readUpdated: Jun 26, 2026

Pantograph

Before a freight run, depot staff check the pantograph: spring tension, contact strip wear, and frame integrity.

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Last updated: 26 June 2026Published: 27 January 2026

Source: https://en.wikipedia.org/wiki/Pantograph

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Logistics Concept

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Definition & Explanation

Before a freight run, depot staff check the pantograph: spring tension, contact strip wear, and frame integrity. The pantograph is the articulated current collector mounted on the roof of electric locomotives and multiple units, pressed upward against the overhead catenary to draw traction current. Its scissor-like geometry allows it to track the catenary's height variations and lateral deviations at speed, including on high-speed lines. In freight rail operations, pantograph condition directly affects locomotive availability; worn contact strips cause arcing that damages both the collector and the wire. The term is distinct from the trolley pole used on overhead bus systems, and also from a historical mechanical drafting tool of the same name.

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Pantograph

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