KMC/S_D/KGPS-31/24-25

Amount

Decoupling the above motor from coupling end of pump , demounting the motor from its base plate and placing the same on the wooden block by using overhead crane at a suitable distance from the floor without damaging the cables including disconnection of the electrical connection from the motor terminals as per direction by E.I.C .

Thorough dismantling of the motor which involves unit separation of stator , rotor, ball / roller bearing from both DE & NDE and other components & placing the same carefully on the wooden block .

Removal of accumulated dust inside the stator windings by suitable brush and clean dry air jetting arrangement and subsequent heating and cleaning of the stator. Other components to be thoroughly cleaned and checked.

Heat varnishing of the stator with Dr. beck's make varnish class 'F' grade insulation to obtain stable IR value , PI value etc. after properly backing.

Thorough cleaning of the rotor including withdrawls of moistures from surface and subsequent heating and cleaning of the as per direction by E.I.C .

Thorough opening , checking ,cleaning and re greasing of existing DE & NDE side bearings .

Replacement of damaged of 1.1 kv grade , 6 nos. copper leads with new ones including new nuts & bolts for fixing in the terminal.

Metalising/re-sleeving of bearing housing cover on both side (DE & NDE) & machining the same & match with bearing housing its normal condition.

Metalising of rotor shaft jounal both side (DE &NDE) & machining the same & match with bearing bore.

Rebrazing the both end rotor joints with end rings .

Trueness of the rotor shaft to be checked and rotor to be dynamically balanced.

Replacement of motor terminal bar insulator as per sample.

Following test to be carried out of the motor and test result to be submitted. i) Resistance test ii) Inductance test iii) Polarity test iv) IR test v) HV test.

Reassembly the motor with stator, rotor , bearings & other components after painting of inner parts. Motor to be placed on its original position & tightening the foundation with new nuts & bolts as per direction by E.I.C.

Finishing the end of the cable in the motor side by supplying lugs , tapes , anti-corrosive materials etc. and fixing the same .

No load running test to be carried out of motor after making all existing electrical connections & Final running test to be done with full load after re-fixing the coupling bolts and proper alignment as per direction by E.I.C.

Transportation of motor from the pumping station to party's workshop & back to station including unloading at site.

R D ENTERPRISE (BID ID -5512945)

MAITY AND CO (BID ID -5520355)