|
| 1 | Draining of transformer oil in clean storage tank/drums including handling charges | Draining of transformer oil in clean storage tank/drums including handling charges |
| 2 | Opening of transformer top cover including crane/labour charges | Opening of transformer top cover including crane/labour charges |
| 3 | Internal inspection of core, winding, clamping structure and insulation assembly | Internal inspection of core, winding, clamping structure and insulation assembly |
| 4 | Tightening of core clamping bolts and rectification of looseness/vibration points | Tightening of core clamping bolts and rectification of looseness/vibration points |
| 5 | Core earthing inspection and correction including insulation restoration | Core earthing inspection and correction including insulation restoration |
| 6 | Cleaning of core and winding assembly using approved insulating solvent/material | Cleaning of core and winding assembly using approved insulating solvent/material |
| 7 | Replacement of complete gasket set including conservator and radiator gaskets | Replacement of complete gasket set including conservator and radiator gaskets |
| 8 | Servicing and cleaning of conservator tank and breather including silica gel replacement | Servicing and cleaning of conservator tank and breather including silica gel replacement |
| 9 | Radiator cleaning and flushing | Radiator cleaning and flushing |
| 10 | Hot oil circulation and filtration up to achieving BDV more than 60 kV | Hot oil circulation and filtration up to achieving BDV more than 60 kV |
| 11 | Vacuum dehydration and oil filling under vacuum | Vacuum dehydration and oil filling under vacuum |
| 12 | Magnetic balance test, IR test, winding resistance test, TTR test and vector group verification | Magnetic balance test, IR test, winding resistance test, TTR test and vector group verification |
| 13 | No-load current and operational inspection after charging | No-load current and operational inspection after charging |
| 14 | Tank sealing, reassembly and tightening of all accessories | Tank sealing, reassembly and tightening of all accessories |
| 15 | Loading/unloading and miscellaneous consumables | Loading/unloading and miscellaneous consumables |
| 16 | Testing and commissioning at site including observation for 24 hours | Testing and commissioning at site including observation for 24 hours |
