bids are invited for operation and maintenance of electrical systems / electrical installations - hot oil circulation hoc and diagnostic testing of power transformers or shunt reactors at kknpp 1and2 item no 1 hot oil circulation in power transformer or shunt reactor with.. , operation and maintenance of electrical systems / electrical installations - item no 2 transformer oil testing for physical chemical and electrical parameters including furan analysis and dga analysis sch qty 24 nos , operation and maintenance of electrical systems / electrical installations - item no 3 online or offline partial discharge testing of transformer or shunt reactor for fault identification sch qty 23 nos , operation and maintenance of electrical systems / electrical installations - item no 4 vibration analysis of power transformer or shunt reactor sch qty 23 nos , operation and maintenance of electrical systems / electrical installations - item no 5 dielectric frequency response analysis dfra or dirana test of power transformer or shunt reactor sch qty 24 nos , operation and maintenance of electrical systems / electrical installations - item no 6 sweep frequency response analysis sfra of power transformer or shunt reactor sch qty 24 nos , operation and maintenance of electrical systems / electrical installations - item no 7 degree of polymerization testing of insulation sample of transformer or shunt reactor sch qty 1 no total quantity :