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If the road is underneath servicing, an damage could happen as the catenary is suddenly energized. Even if the catenary is properly grounded to shield the staff, the arc produced throughout the pantograph can injury the pantograph, the catenary insulator or each.A lot of graphical interfaces, like the OS/2 Presentation Supervisor and early versions

This wire approximates the organic route of a wire strung involving two points, a catenary curve, Consequently the use of "catenary" to explain this wire or occasionally The full system. This wire is connected to the contact wire at common intervals by vertical wires called "droppers" or "drop wires". It can be supported routinely at buildings, by