ETC MU T 119 2020 21

Amount

Shifting of 20 KL oil tanker from store to near Transformer plinth with the help private crane for internal inspection of 160 MVA Transformer.

Testing of partial discharge of 160 MVA Transformer at 400 KV Sub-Station Jolly Road Muzaffarnagar.

After Partial Discharge test, drain out of complete Transformer oil in empty oil tanker for internal inspection of Transformer.

Opening of HV/LV side jumpers and other associated works.

Opening of inspection plate, dismantling of HV/ LV side bushings for internal inspection of 160 MVA Transformer at 400 KV sub-station Jolly road Muzaffarnagar.

Providing of dry air generator at time of dismantling of bushings, internal inspection and erection of bushings.

Internal inspection of 160 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.

Erection of dismantled bushings and replacement of gasket of open parts of 160 MVA Transformer.

Centrifuging of Transformer oil in 20 KL oil tanker by Ultra high vacuum oil filtration plant after connecting the centrifuging the pipe with oil tanker to oil filtration plant including taking the BDV value of oil periodically till the required value is achieved. (approx. 55 KL)

Complete evacuation of 160 MVA Transformer main tank and filling of Dry air/ Dry Nitrogen of dew point -500 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 shell including connecting pipe of machine as required measuring Due Point values of N2 after every cycle till the required value is achieved.

Create the vacuum inside the 160 MVA Transformer before filling the Transformer oil including vacuum standing test.

Filling of centrifuged Transformer oil from oil tanker to Transformer main tank top up in conservator tank upto required level and taking the IR/BDV value oil T/F oil at an interval of 6 hrs. as per norms of T/F manufacturer. After achieving the desired value (machine shall be provide by the contractor) (Approx 55 KL).

Jumpering of HV/LV side bushings and ready for energize of Transformer.

Perfect Power Transformer Associates

Meena Elect & Engg. Works