Construction of 132/33kV GIS March 1, 2018 | Asia Pacific Tenders Competitive bids are invited for the construction of the 2x90 MVA, gas-insulated switchgear (GIS) at the 132/33 kV Datuk Keramat substation, Pulau Pinang. This content is available to only paying subscribers. Username or E-mail Password Remember Me Forgot Password