|
| 1 | Following works are required to be carried out for internal inspection of 40 MVA Transformer at 220 KV S/S Shatabdinagar under ETD Meerut. The Detail of work to be executed is as given below :- | Following works are required to be carried out for internal inspection of 40 MVA Transformer at 220 KV S/S Shatabdinagar under ETD Meerut. The Detail of work to be executed is as given below :- |
| 2 | Drain out of complete Transformer oil in empty oil tanker for internal inspection of Transformer. (Centrifuging machine with operator shall be provided by the contractor) | Drain out of complete Transformer oil in empty oil tanker for internal inspection of Transformer. (Centrifuging machine with operator shall be provided by the contractor) |
| 3 | Opening of inspection plate, dismantling of HV/ LV side bushings for internal inspection of 40 MVA Transformer at 220 KV sub-station Shatabdinagar. | Opening of inspection plate, dismantling of HV/ LV side bushings for internal inspection of 40 MVA Transformer at 220 KV sub-station Shatabdinagar. |
| 4 | Internal inspection of 40 MVA Transformer, checking of HV/LV side winding lead of Transformer, tightening of joints, connections and all other components inside the main tank of Transformer. | Internal inspection of 40 MVA Transformer, checking of HV/LV side winding lead of Transformer, tightening of joints, connections and all other components inside the main tank of Transformer. |
| 5 | Erection of dismantled bushings, Inspection Plate and replacement of gasket of open parts of 40 MVA Transformer. | Erection of dismantled bushings, Inspection Plate and replacement of gasket of open parts of 40 MVA Transformer. |
| 6 | Complete evacuation of 40 MVA Transformer main tank and filling of Dry Air/Dry Nitrogen of dew point-50°C or better in vacuum up to pressure of 0.25Kg/Cm2 and the again evacuating the Transformer tank after required time interval (approx. 12/24 Hrs) using centrifuging machine the work shall including connecting pipe of machine as required measuring due point values of N2 after ever cycle till the required value is achieved. | Complete evacuation of 40 MVA Transformer main tank and filling of Dry Air/Dry Nitrogen of dew point-50°C or better in vacuum up to pressure of 0.25Kg/Cm2 and the again evacuating the Transformer tank after required time interval (approx. 12/24 Hrs) using centrifuging machine the work shall including connecting pipe of machine as required measuring due point values of N2 after ever cycle till the required value is achieved. |
| 7 | Create the vacuum inside the 40 MVA Transformer before filling the Transformer oil including vacuum standing test. | Create the vacuum inside the 40 MVA Transformer before filling the Transformer oil including vacuum standing test. |
| 8 | Filling of Transformer oil from oil tanker to Transformer main tank after internal inspection of damaged 40 MVA Transformer. (Centrifuging machine with operator shall be provided by the contractor) | Filling of Transformer oil from oil tanker to Transformer main tank after internal inspection of damaged 40 MVA Transformer. (Centrifuging machine with operator shall be provided by the contractor) |
| 9 | Centrifuging the T/F oil in main tank and circulating the T/F oil through centrifuging machine and taking BDV time to time. (Centrifuging machine shall be provided by the contractor.) (approx.-18KL) | Centrifuging the T/F oil in main tank and circulating the T/F oil through centrifuging machine and taking BDV time to time. (Centrifuging machine shall be provided by the contractor.) (approx.-18KL) |
| 10 | Transformer oil sample collection testing of T/F oil testing lab including cost of transportation of each sample in standard sample bottles.i-BDVii-PPMiii-DGA | Transformer oil sample collection testing of T/F oil testing lab including cost of transportation of each sample in standard sample bottles.i-BDVii-PPMiii-DGA |
