Repairing of 125KW, 3.3KV, Slipring motor of Bansra Colliery under Kunustoria Area.

Amount

Repairing and rewinding of electrical in dismantling of motor statir and rotor, decarbonizing the circuit connection, removing the slot wedges, demaged coils taken out from stator slot, slots cleaning cleaning by by approved type cleaner and jumpering taken out burnt coils from stator slot, cleaning of core slots by approved type cleaner etc

New DGC covered copper conductor and less copper scrap value

Formation of DGC covered conductor into coil

Insulation for overhung portion of the coil with GMP, kaflon and glass tape

Moulding the coils with mica therm and mica folium by baking and insulating from moulded portion to coil head with GMP, GMP tape with re-varnishing

Inserting the coils in the core slots in choronological manner by nomax for slot insulation in between wedges coil to coil separator and insulated blocks,binding the overhang portion coils with unvarnished glass sleeving

Insulation of the circuit connection, jumpers, coil to series and leads with kafton, nomax, GMP tape and dry the windings

Inserting the silicon glass wedges

Circuit connection and rejumpering with silver rod, DA, oxygen etc

Repairing of rotor shaft by welding and machining as per bearing size,cost of repairing both side end of rotor shaft to bearing size

Rotor winding,cleaning,washing,varnishing, greasing etc

High preassure testing of rewinded motor

Build up and machining of both end bearing hosing bracket

Trueness checking & balancing of the rotor

Build up and machining of both end shield

Supply of electrolyte copper conductor with call (F) insulation 150 Kg X 876 = 131400 Less scrap 148 Kg x 508 = 75184 . (131400 - 75184) = 56216

Supply of nomax paper for stator insulation

Supply of tape suitable for HT motor

Varnishing the reformed coils with HT grade varnish

Supply of thinner suitable for HT motor

Dismantling of the complete motor taken out the damaged coils fromcore slots of starter

Complete motor overhauling, refitting & re setting charges

Reconditioning of bearing housing

Cleaning, greening, assembling and no load trial run of motor

Transporting charges to and from

Labour cost

over head profit

Total impact of GST for the purpose of CTC

Chatterjee Engineering Works (BID ID -1142580)

ROY ENTERPRISE (BID ID -1143106)