WORK OF DISMANTLING OF 100 MVA TRANSFORMER MITSHUBISHI MAKE AND ERECTION AND COMMISSIONING OF 200 MVA TRANSFORMER BHEL MAKE AND OTHER ASSOCIATED WORK AT 220 KV S/S BARAHUWA UNDER ETD-II , GORAKHPUR

Amount

Opening of jumper, electrical connection and cutting of earthing strip from 100 MVA T/F " MISTUBUSHI" make .

Dismantling and re-erection of 220KV CT upon structure and proper tightening.

Draining of 15.5 KL oil from tank of each phase of 3x33.3 MVA T/F-II including dismantling of both side bushing, conservator, radiator, oil pipe line, header, fans, cubicle, electrical connection and all assocaited work (all three phase R, Y, B).

Shifting of 100 MVA T/F main tank from plinth to storage place 20 mtr. Including turning of T/F if required (R,Y,B phase).

Additional shifting 450 mtr. @ 5 mtr./job.

shifting and placement of all dismantled accessories as radiator, conservator tank and other accessories to store / open switchyard and proper stacking (for all three phase).

Shifting of 200 MVA T/F BHEL make main tank from unloading place to existing T/F plinth by dragging distance about 20 mtrs. Including turning of T/F if required.

Additional shifting 50 mtr. @ 5 mtr./job.

Complete erectioin of new 200 MVA T/F and accessories of HV/LV/TV side bushing, radiator, conservator tank, A frame, header , pipe line, pump, cooling fan etc. and top up the oil upto required level.

Create the vaccum inside the T/F tank and maintain it for 24 Hrs. filling the oil step by step in 200 MVA T/F.

Filling dry nitrogen having high purity cylinder under vaccum from top value of the T/F upto pressure of 5 PSI and maintaining the same in the main tank for 12 Hrs. including cost of nitrogen gas and nitrogen gas filling device.

Carriage of 02 Nos. oil tanker 40/20 KL including loading , unloading and carriage approx. distance 100 Km. under ETD-II, Gorakhpur.

Centrifuging of complet T/F oil in T/F by connecting centrifuging pipes circulating the T/f oil through centrifuging machine and taking the BDV value of the oil periodically till the required value is achieved as per direction of supervising engineer. The work includes all the work related to centrifuging the oil and filling the oil in T/F and tank (operator and centrifuging machine shall be arranged by the contractor).

Laying, dressing and binding of cable including fixing of cable tray support structure and termination of cable making the top and ferruling as per schedule and interconnection including shifting of old cable as per requirement of RTCC panel, marshalling box, driving mechanism etc. (all costing work as per requirement).

Earthing of T/F body, MB DM box, OLTC, RTCC at 2 points using 75x10 / 50x6 mm MS Flat (MS Flat shall be provided by the department).

Painting of earthing strip above the ground level by one coat of red oxide primer and two coat of bus green paint.

Preparing and fitting of ACSR Zebra conductor jumper on 220KV and 132KV side .

Delta earthing for 200 MVA T/F consisting of fabrication of delta set with 3 Nos. 40 mm / 36 mm dia size 3 mtr. long electrodes its placing inside the ground and connecting all the three electrodes with 75x10mm MS flat 700 mm D and connecting the same with earthmat at two places (MS flat and MS rod Provided by the department).

Packing of HV , T/F bushing of dismantled 100 MVA T/F (wooden box will be provided by the department) and its shifting upto proper storage place.

Packing of LV, T/F bushing of dismantled 100 MVA T/F (wooden box will be provided by the department) and its shifting upto proper storage place.

Conducting testing by arranging appropriate equipment for following testing by CPRI, Noida (BDV/PPM/DGA/TAN DELTA/ Resistivity ).

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