Supply of OPGW for 230 kV lines and 63 kV line December 8, 2017 | Middle East & Africa Tenders Competitive bids are invited for the supply of optical ground protection wires for 230 kV Samireh–Abdanan Dehloran, Cheshmeh Sefid–Oramanat lines and 63 kV Mehran–Ilam line. This content is available to only paying subscribers. Username or E-mail Password Remember Me Forgot Password