Behaviour of Mk IIIA overhead line contact system in wind – Initial results of measurements on an exposed section of line north of Tebay (TM-ETR-6)

Excessive amplitude of pantograph displacement had been observed on test runs carried out on exposed sections of MkIIIA equipment in high winds. An exposed portion of track along the Lume Valley showed particularly large amplitudes. A portal structure was erected within the relevant tension length to permit measurement of...