International bids are invited for installation of two 63 MVA, 220/33 kV Transformers, extension of 220 kV double bus bar, construction of two transformer bays, installation of two 33 kV gas-insulated switchgear (GIS) transformer bays, twelve 33 kV GIS generator bays with 33 kV bus bar extension and modification of control, protection, metering, SAS, at220/33kV Mannar Grid Substation (GS).
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