REPLACEMENT OF OLD (Abb Make) 245KV BREAKERS WITH NEW 245 KV SIEMENS MAKE BREAKERS ON NEW 200MAV BAY AT 220KV S/S BARAHUWA UNDER ETD-II, GORAKHPUR

Amount

Shifting and placing of chequerred plates wooden sleepers etc. at site in 220KV New 200 MVA T/F bay for easy movement of crane/ hydra

Isolating all the three poles of 245 KV old breakers of new 200 MVA T/F bay by opening of this bay by opening of connectors from both ends again its connection to both ends of breakers after installation of new 245 KV SF6 breakers at both Bays.

Complete determination of various size of PVC control cables of deferent size-2Cx2.5 Sq mm, 4Cx2.5 Sq mm, 6Cx2.5 Sq mm, 10Cx2.5 Sq mm, 12Cx2.5 Sq mm, 19Cx2.5 Sq mm between Control and Relay panel to Marshalling Box of both breakers and proper marking and reconnection to new Cubical after providing new ferrules lugs and tags with all cost of men, Material and T&P. (New cables if required shall be provided by department).

Dismantling of following components of two numbers 245 KV SF6 CBs after opening of 19 Core control cables between each phase control blocks and switch cubical for shake carriage of dismantled parts including chamber insulators, support insulators, control cubical, support structure, copper pipes and Compressors from the site as per direction of JE/SDO.

Modification of base structure as per grouted bolts including cutting welding and drilling.

Erection of new 245 KV SF6 Breakers (GE Make) complete with accessories & structure by assembling all parts with bolts & nuts at new 200MVA T/F Bay as per drawing in supervising of GE Service Engineer and supervising Engineer along with shifting the 245 KV SF6 CB from store to site.

Laying of 19 core control cable between marshalling box and each phase control block and making interphase wiring between marshalling box and each phase control block for proper closing & tripping of 245 KV SF6 CB in local & remote mode by opening the trench cover and again putting after completion of work.

Termination of dismantled cable wire form control panel to the CB Marshalling box with work of fixing cable gland, ferruling and making lug on wire as per drawing and making bunch with tag material.

Making earthing of two number 245 KV SF6 Breaker and plateform with work of laying M.S Flat 75x10 mm and 50x6 mm after digging pit, Making lap joint of flat of 75 mm for flat joint and semicircle joint for main earth mat M.S Rod of 40 mm by making electric welding as per technical specification, cleaning weld joint and painting Red Oxide one coat & two coat black bituminous paint after cleaning welded joint below ground level & black filling of pit.

Painting of M.S Flat of 75x10/50x6 mm with one coat Red Oxide Primer and two coat of synthatic enamel green paint after cleaning the surface.

Misc. work like making vacuum of poles 245 CB and filling of SF6 gas and checking for leakage of gas. Checking ON/OFF Position and helping for testing and commissioning of CB complete work.

Shifting an placing of M.S Chequered plate, wooden sleeper etc. from site to store after completion of works as per requirement.

Sri Balaji Associates

Sampada Trading Company