Tender For supply of 4. 4 mva inverter duty step up transformer input 660 v output 33 kv , set of valves for 4. 4 mva inverter transformer , wti with contacts of 4. 4 mva inverter transformer , oti with contacts of 4. 4 mva inverter transformer , buchholz relay complete of 4. 4 mva inverter transformer , pressure relief device of 4. 4 mva inverter transformer , magnetic oil gauge of 4. 4 mva inverter transformer , hv and lv bushing with metal parts and gaskets of 4. 4 mva inverter transformer