ETC MU T 02 2024 25

Amount

Following works are to be carried out for dismentaling and shifting of defective 200 MVA T/F and Erection and commissioning of New 160 MVA T/F at 220 KV S/S Shamli

Opening of jumper, Electrical connection and cutting of earthing strip from 200 MVA T/F at 220 KV Sub-Station Shamli.

Dismantling of all water and air pipe lines of emulsifier system of 200 MVA T/F its safe shifting to required place at 220 KV Sub-Station Shamli.

Dismantling of Defective 200 MVA T/F and accessories removing the Radiator, conservator tank. A frame, header. Bushing, pipe line, and pump. Cooling fan etc. and drain out of oil up to required level into empty oil drums at 220 KV Sub-Station Shamli.

Shifting of defective 200 MVA TF upto deignated place in sub-station including turning of T/F as required (Distance approx. 80 mtrs).

Shifting & placement of all dismantled accessories as radiator conservator tank and other accessories to store/open switchyard and proper stacking.

Loading of 20 KL oil Tanker on open trailer by the crane, its Carriage from 132 KV S/S Shamli Shyamla to 220 KV S/S Shamli unloading at 220 KV S/S Shamli with the help of crane (Trailer / Crane Shall be arrange by the contractor)

Filling the T/f oil in oil tank and its centrifuging up to required BDV and creating the vacuum inside the 160 MVA T/F before filling the T/F oil inside the main tank.

Complete erection of 160 MVA T/F and accessories of HV/LV/TV side bushing radiator, and Conservator tank, A-Frame, Header, pipe line, pump cooling fan etc and Top up upto required level.

Complete evacuation of new 160MVA 220/132 KV TF main tank and filling of dry air/ N2 (provided by contractor) of dew point -40 C or better in Vacuum up to pressure of 0.25kg/Cm2 and the again evacuating the T/F tank after required time interval (Approx 12/24 Hrs) using centrifuging machine. The work shall include connecting pipe of machine as required and measuring dew point values of dry air after every cycle till the required value is achieved. Dew point meter shall be arranged by contractor. The above work involves minimum 3 cycles of evacuation and 3 cycles of dry air filling, however if results are not up to the mark, 1 more cycle of evacuation and dry air filling shall be done by contractor. The work includes providing and circulation of dry air at the time of erection of bushings etc.

Centrifuging of complete T/F oil in T/F by connecting centrifuging pipe 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 work related to centrifuging the oil and filling the oil in T/F (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 marking the top and its ferruling. As per schedule and inter connections including shifting of old cable as per requirement of RTCC panel marshaling box, driving mechanism etc.

Earthing of T/F body. MB, DM Box, OLTC, RTCC at two points using 75x10/50x6mm M.S flat from exisiting earthmat including Painting of earthing strip by one of red oxide and two coat of bus green paint.

Preparing and fixing of ACSR Moose/Zebra conductor jumper of 220 KV and 132 KV side cutting of conductor and removing/fixing of equipments if necessary.

Supply & laying of following size MS 'B' class pipe jindal/tata make for fire detection air & water pipe line IS Specification (IS code-1239) as per drawing enclosed, complete with elbow, tee socket reducer, nuts and bolts with anticorrosive treatment or painting as where required along with fabrication & fixing of L&U shape support with associated work to complete the job in all respect.

Supply & installation of following sizes flange as per IS-1538 of different size as per drawing work include proper butt welding with pipe & proper packing and coupling with nut & bolts and fastener as required

Supply & installation & commissioning of high velocity water spray nozzles flow capacity 3.5 Kg/Cm2, spray angle 90 degrees.

Supply & installation & commissioning of Quartzite bulb detectors (QBD) operate at 90 degree centigrade (Sensing at rated temp for actuation of the element 10-12 sec).

Supply & installation & testing commissioning of fixed differential switch (danfoss/Indfoss make) type pressure switch range 1-10 Kg./Cm2.

Re-Installation of old & used Water & Air Pipe Line (Including Modification as required) of size 65, 50 & 25 NB MS pipe B class by making support for water/air pipe line including providing flange on bottom & its proper grouting with fastener nut, bolt with anticorrosive treatment and painting.

Re-Installation & commissioning of old & used high velocity water spray nozzles flow capacity 3.5 Kg/cm2 spray core angle 90.

Re-Installation & commissioning of old & used of Quartzite bulb detectors (QBD) operate at 90 degree centigrade (Sensing at rated temp for actuation of the element 10-12 sec).

Perfect Power Transformer Associates