REPLACEMENT WORK OF OLD 245KV BREAKER WITH NEW 245 KV SIEMENS MAKE BREAKERS ON 220KV TANDA BAY AT 220KV S/S BARAHUWA UNDER ETD-II, GORAKHPUR.

Amount

Shifting and placing of chequerred plates wodden sleepers etc. at site in 220KV Tanda bay for easy movement of crane/ hydra.

Isolating all the three poles of 245 KV old breakers of this bay by opening of this bay by opening of connectors from both ends again its connection to both ends of breakers after installaion of new 245 KV SF6 breakers at 220KV Tanda bay.

Complete determination of various size of PVC controle cables of defferent size-2Cx2.5 Sqmm, 4Cx2.5 Sqmm, 6Cx2.5 Sqmm, 10Cx2.5 Sqmm, 12Cx2.5 Sqmm, 19Cx2.5 Sqmm between Control and Relay panel to Marshalling Box of 220 KV Tanda breaker 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 Tanda Bay 245 KV SF6 CB after opening of 19 Core control cables between each phase control blocks and switch Qubicals for shake carrage of dismatalled 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 (Seimesn Make) complete with accessories & structure by assembling all parts with bolts & nuts at 220 KV Tanda Bay as per drawing in supervising of Seimens 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, ferrulling and making lug on wire as per drawing and making bunch with tag material.

Making earthing of 245 KV SF6 Breaker of 220 KV Tanda Bay and cubical 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.

M/s Star Electric and Repairing Centre

Jai Laxmi Projects