Assessment of the wind effects in relation to the dewirements on overhead line equipment, WCML, December 1974 - January 1975 (TM-AERO-009)

The wind conditions for the incidents of dewirement on the West Coast Main Line during the winter of 1974-75 are examined. The contact wire blow-off distance is found to be excessive in some cases, so this could have been the primary cause of dewirement. However, considerable loss of sag of...