Repairing of 01 no 450 HP 6 6 KV 3 phase Slip ring type BHEL Make HT Motor unit No 11 installed at lift irrigation station Lakhanpur

Amount

Repairing of 01 no. 450 H.P; 6.6 KV; 3-phase; Slip ring type ( BHEL-Make) H.T. Motor unit No 11 installed at lift irrigation station, Lakhanpur(as per scope of work Annexure c of SBD)Repairingof 01No. 450 H.P; 6.6 KV; 3-phase; Slip ring type ( BHEL-Make) H.T. Motor of unit No 11 by way of de-coupling it from the pump and base frame. Carriage of motors from the pump house, Lakhanpur to workshop of the firm in mechanical transport by deploying crane/suitable chain-pulley arrangement. Complete dismantling of Motor, which includes extraction of rotor out of stator, also extraction of old damaged bearings from the rotor shaft and other allied parts.Cleaning the stator and rotor first with the help of blower to remove dirt and dust and then with cleaning agent CRC – 226.Providing and taping with new insulation tape i.e. glass tape / mica tape on all overhanging portion of the coils and also replacing damaged wedges with new wedges. Providing and varnishing of the complete motor i.e. stator and rotor with superior type of bakelite red / grey varnish. Varnish is to be done with brush by giving two nos. of coats till all the grooves / gaps are filled and a uniform layer is formed. Drying out both (Stator and Rotor) under controlled temperature till constant IR value is attained as per IS – 4722.Job also includes providing and fitting of new bearing set i.e. bearing no NU-224M, 6224C3 at DE and bearing no NU219M at NDE of standard quality and greasing them properly. Replacing the old / worn out carbon brushes with new one of slip ring assembly of HT motor (each motor has set of 12 carbon brushes).Re-assembling the motor after repairs and carriage of motor from the workshop to pump house, Lakhanpur. Placing the motor on the base frame and fitting itso as to make alignment with the pump after coupling it with the pump. Providing and fitting of new cable end kit at both ends of the cable (Motor side & panel side), P/F of new aluminum thimbles (6 Nos) along with nuts and bolts (6 Nos) to each cable in place of old one. Crimpling the thimbles properly with the help of crimpling tools and giving connections to the motor and panel. Making all the electric connections. Testing the motor on full load. Complete job includes cost of material, labour charges, transportation cost, tools and tackles required for execution of work

Shivam enterprises

HITECH MECHNICALS