bids are invited for repair, maintenance, and installation of plant/ systems/equipments (version 2) - 0; electrical system or installation, l-07 repair of battery charger unit along with 02 kva step down transformer; service provider the battery charger unit (initially fitted item) for port main engine and port da is not delivering the requisite dc output voltage for effective battery charging. preliminary fault analysis indicates a suspected failure in the 2 kva step-down transformer of the battery charger (rated 230v ac input to 30v dc output). defect likely due to deterioration/ burnout of internal windings due to prolonged operational exploitation/ insulation breakdown. the defect is to be rectified and the battery charger unit alongwith 2 kva step-down transformer is to be proved for satisfactory operation. total quantity :