Tender for catenary wire and 107 Sq.mm catenary wire including modifications to existing CHE at Errupalem (Excl.) – Pandullapally (Incl.) and Warangal Yard as part of KZJ-BZA 3rd Line Project of South Central Railway. mm HDG copper contact wire, with LT supply transformer station | Design, Supply, Installation, Testing and Commissioning of 25kV, 50 Hz Single Phase A.C Traction Overhead Equipment.