Repair of 6.6KV slip ring type induction motor 750KW/1000HP Jyoti make motor S. No. 134431 installed at Tawi Pump House Jammu

Amount

Repair of 6.6KV 750KW/1000HP slip ring induction motor S.No. 134431 by disconnecting slip ring leads and HT side cable connections and rotor cables, decoupling of pump and motor, dismantling slip ring assembly along with damaged carbon brush bracket holders with carbon brushes, draining out all the motor oil from the oil chamber, hoisting and . Dismantling of top and bottom end covers, extraction of rotor from the stator without harming rotor and stator windings & keeping the rotor in horizontal position, extraction of the old damaged ball bearing No. 6326 MC3 from the rotor with the help of bearing puller and suitable tools. Rebuilding damaged bearing housing at DE end of motor by way of fabrication & fitting a new sleeve of CI/MS to rebuild the bearing housing to its original size to hold bearing properly. Providing and fitting of new DE side ball bearing No. 6326MC3 to 750 KW/1000 HP HT motor of reputed make and applying recommended quantity of superior quality grease on both side bearing (DE & NDE). Handling and servicing of motor by way of cleaning the rotor and stator winding, removing dust from rotor and stator winding, all the air vents of stator by applying air pressure using blower /compressor and then cleaning with chemical and varnishing Rotor and stator windings by applying two coats of Dr Beck Becktol Red varnish and drying it under controlled temperature. Re assembling the rotor with the stator and other accessories. Extracting out damaged connection rod from the motor. P/F new bush/connection rod along with nuts & bushes fabricated out of brass & using insulating glass sleeve & Bakelite spacer etc. to avoid leakage of current. Providing and fitting 06(six) no. of copper terminal leads of slip ring by way of Fabrication of slip ring copper leads for 1000 HP motor suitable for current carrying capacity of 650 amp of rotor current with F class insulation with end terminals of required size on both end of lead as per sample after extracting old damaged leads. The job includes mounting /fitting of motor on motor skirt, aligning and coupling the motor with pump and then making all the electrical connections and testing the motor. Testing motor on full load. Complete job includes cost of material & other allied materials and labour charges & carriage charges of motor parts to workshop and back.

M/S RAGHUNATH MECHANICAL AND ELECTRICAL ENGINEERING WORKS (BID ID -2399901)

NATIONAL ELECTRO-MECH COMPANY (BID ID -2394208)