KMDA/EM/EE/MD-III /NIT-29 of 2025-26

Taking out the 3.3 KV /6.6 KV sq. cage induction Motor from coupling end of 100 /150 cusec vertical axial flow propeller pump after dismantling all connection including earthing etc. The motor is to be kept on wooden sleeper at a suitable distance from the floor without damaging the earthing strips and cables etc. as per direction of E.I.C.

Preliminary checking and testing of IR value, insulation leakage of stator, cracks of porcelin bushings, conn. Terminal leads, frbre glass terminal blocks and rotor end ring joints etc. before to detect the fault for 3.3 KV /6.6 KV sq. cage induction Motor.

Transportation of the motor from pump house to work shop and work shop to pump house including man power for loading unloading of motor as per direction of EIC.

Disassembling the motor end and opening of end shield covers, stator coil guard, taking out the rotor from the stator and placing it on the proper arrangement by hoisting mechanism as per direction of EIC.

Heat varnishing of the 6 KV rated stator winding with two coats of Dr Beck HTF 50 varnish and subsequent heating at suitable temperature till the IR result obtained at satisfactory level as per direction of EIC.

Supply, delivery & installation of DE and NDE Bearing for motors(No.6322/C3 & 6319/C3,Make: SKF)

Repairing of rotor crack part, lacker coating on the surface of rotor stamping and other necessary work directed by EIC

Trueness and eccentricity checking of the rotor and then dynamic balancing at rated speed as directed by EIC

Driving End Under cut of damaged DE side bearing housing portion, metal deposition on die under cut surface, machining, turning & polishing with propertolerance according to the size of bearing outer. Work should be completed in all respect upto the satisfaction of E.I.C

Non Driving End Under cut of damaged NDE side bearing housing portion, metal deposition on die under cut surface, machining, turning & polishing with propertolerance according to the size of bearing outer. Work should be completed in all respect upto the satisfaction of E.I.C

Reassembling the 3.3 KV /6.6 KV sq. cage induction Motor including placing the rotor into the stator, refixing the coil guard, prefixing the motor covers, terminal leads, terminal blocks, cable entry box, terminal box after completion of repairing works Upto 475 KW Squrrel cage induction motor of voltage rating 6.6 KV.

Testing of the motor as per IS like IR, PI ,lock rotor, heat run, tan delta, shaft voltage tests etc as per direction of EIC.

Maintenance and overhauling of Centrifugal Pump as per manufacturers instruction manual with all tools, tackles etc. This job includes labour charges, consumables like O - ring, gland packing, sundry cleaning material etc. This job includes dismantling of all sub assemblies such as cooling pipes, bearing housing, stuffing box, shafts, bowl assembly, bell mouth, strainer etc. Reconditioning of all parts, inspection of all parts & replace these parts as per instructions (spares cost excluded) straighthening of shafts & refitting of all parts & sub assemblies with proper alignment. including motor removing & refixing, test & trial for 24 hrs. etc complete. Capacity above 5 cusec and upto 20 cusec pump

Lowering of the motor on motor stool/ base at pumphouse and coupling with pump after blue matching and other physical test using all kind of gauge, tools and tackles complete in all respect as directed by EIC

Connection of HT cable and final testing and commissioning of the pump motor set as per direction of EIC.

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