ELECTRICAL WORK

Dismantling of defective 420 kV CVT (R Phase of 400 kV Main Bus 2nd) and its shifting to store/site at 400kV Substation,Greater Noida

Dismantling of 400 kV CTs (current transformers which tan Delta results in Higher side) by opening of all nuts & bolts from ERW pipe type structures, opening of all earthing points, jumpers, cable connections and then shifting of dismantled CTs from structures in yard to store or designated place at store site with the help of crane/hydra up to the distance of 600-700 meters approx. very carefully.

Shifting of new 400 kV CTs of 0.2 accuracy from store to erection site about 600-700 meters and installation of them on ERW pipe type structures at proper place by making necessary arrangement i.e. making holes for proper matching of CT’s base holes with structures holes, tightening of all nuts & bolts, earthing of CTs at proper points, jumpering of CTs, by making proper modifications such as removal of short old jumpers and proving new jumpers of proper length in place of them. cable connections on secondary side & all other associated works to complete the job.

Jumpering of 420 kV CVTs modification of its jumper size and all associated work to complete the job. Italso includes opening of jumper before dismantling of CVT.

Dismantling of old damaged 400 kV CTs junction boxes by opening all nuts and bolts, earthing and removal of all cables connections without any damage.

Installation of new 400 kV CT junction box by making proper arrangement of erection of CT, junction box on BCT structures with extension of angles, Tightening of all nuts & bolts and earthing of CT junction box at proper points, thereafter making all cables connections with ferrule and tags according to drawing. Thus to complete the job.

Jumpering of 245 kV CTs (R phase), modification of its jumper size and all associated work to complete the job. It is also includes opening of jumper before repairing of 245 kV CT of above mentioned bay.

Dismantling of 220 kV CTs (current transformers which tan Delta results in Higher side) by opening of all nuts & bolts from ERW pipe type structures, opening of all earthing points, jumpers, cable connections and then shifting of dismantled CTs from structures in yard. to store or designated place at store site with the help of crane/hydra up to the distance of 600-700 meters approx. very carefully.

Shifting of new 220kV CTs of 0.2 accuracy from store to erection site about 600-700 meters and installation of them on ERW pipe type structures at proper place by making necessary arrangement i.e. making holes for proper matching of CT’s base holes with structures holes, tightening of all nuts & bolts, earthing of CTs at proper points, jumpering of CTs, by making proper modifications such as removal of short old jumpers and proving new jumpers of proper length in place of them. cable connections on secondary side & all other associated works to complete the job.

Repairing & overhauling work of 220 kV centre break Tandem Isolators will be done of 220 kV Noida Sector 20 Ckt-2nd at 400 kV S/S Greater Noida. Work of dismantling of male & female moving contact assemlby and porcelain support insulator (if required) repairing of electrical contacts,overhauling of all moving and rotating parts including replacement of ball bearing (if required) will be done of isolator at 400 kV S/S Greater Noida.All other associated work will be done for complete the work satisfactorily.

Dismantling of old damaged 220 kV CT junction boxes by opening all nuts and bolts, earthing and removal of all cables connections without any damage.

Installation of new 220 kV CT junction box by making proper arrangement of erection of CT, junction box on BCT structures with extension of angles, Tightening of all nuts & bolts and earthing of CT junction box at proper points, thereafter making all cables connections with ferrule and tags according to drawing. Thus to complete the job.

4” IPS Tube will be Repair from CT to line isolator of R phase of 220 kV Noida Sector 20 Ckt-2 including dismantaling of IPS tube and reinstalling after repairing work. The work includes cutting of 4” IPS tube, bending in proper shape, repair sleeve insert in IPS tube,connected with the help of clamps and all other associated work to complete the work (IPS Tube bending machine will be provided by contractor).

Dismantling of 132 kV CTs (current transformers which tan Delta results in Higher side) by opening of all nuts & bolts from ERW pipe type structures, opening of all earthing points, jumpers, cable connections and then shifting of dismantled CTs from structures in yard. to store or designated place at store site with the help of crane/hydra up to the distance of 600-700 meters approx. very carefully

Shifting of new 132 kV CTs of 0.2 accuracy from store to erection site about 600-700 meters and installation of them on ERW pipe type structures at proper place by making necessary arrangement i.e. making holes for proper matching of CT’s base holes with structures holes, tightening of all nuts & bolts, earthing of CTs at proper points, jumpering of CTs, by making proper modifications such as removal of short old jumpers and proving new jumpers of proper length in place of them. cable connections on secondary side & all other associated works to complete the job.

Dismantling of old damaged 132 kV CT junction boxes by opening all nuts and bolts, earthing and removal of all cables connections without any damage.

Installation of new132 kV CT junction box by making proper arrangement of erection of CT, junction box on BCT structures with extension of angles, Tightening of all nuts & bolts and earthing of CT junction box at proper points, thereafter making all cables connections with ferrule and tags according to drawing. Thus to complete the job.

R.T.K POWER ENGINEERS (BID ID -5209490)

ARK ENGINEERING (BID ID -5208949)