Supply of 115/22.9 kV transformers November 3, 2017 | North America Tenders Competitive bids are invited for the supply and furnishing of two units of 36/48/60 MVA, 115/22.9 kV transformers (load tap-changer (LTC)) for the Ipswich river substation. This content is available to only paying subscribers. Username or E-mail Password Remember Me Forgot Password