EE(AM)/BER-I/eNIT-01/2026-27

(a) Dismantling of different H.P 3 Phase 380-400 Volt 1440 RPM, 4/3 pole 50 cycle for induction motors, removing old burnt out coil from slots carefully, segregating all the parts, washing and cleaning the same thoroughly for verification of serviceable and unserviceable parts as per direction of E.I.C. (i)17.5 H.P/ 20 H.P 3 phase induction motor.

Rewinding with approved quality Super Enamel copper winding wire of standard guage as provided by motor manufacturer including slot insulation as per Indian Electrical Rules, shouldering the cable joints properly, taping with 660 V. Grade water proof tape, making new loop terminals heating and vernishing with 'E' class golden vernish (Jhonson & Nicolson make) so as to develop original rated rpm, supplying all necessary materials as mentioned above and reassemblying the motor..(b) 17.5H.P/20H.P 3 phase ,415 volts ,50 Hz ,2/4 pole induction motor. (i) Supply of super enamelled dual coated copper wire conforming IS 13730, 1996, part 13 (18 swg to 22 swg) Required max. weight of super enamelled copper wire is given below: ( 1.) Elech/GEC (New)/crompton/NEC-10.20 Kg,(2) Bicco/AEI-13.1 kg (3) GEC (OLD)-13.5 kgand 16.2 kg(4) kirloskar(new) -9.5 kg and 10.5 kg (5) kirloskar(old)-12 kg,(6)crompton(old)-12.5 kg(6) NGEF-10.5 kg.

Labour charge for rewinding , soldering, heat varnishing, bearing changing, reassemling etc. including supply of all materials excluding bearing as mentioned above complete in all respect as per direction of E.I.C

Socketing with C.I socket at enlarged bearing housing of any type of 17.5 HP/20 HP motor by oversizing the bearing housing by machine turning & suppling new socket of required size and fitting the same in bearing housing.

Testing of repaired motor by contious 8 hrs running at nearest site on load after making necessary connection including fitting fixing and shifting to and form just appeared.

Repairing of damage motor shaft by metaling with electric welding and turning properly to house in the bearing space and coupling side teeth and also rectifying the dynamic balance of the rotor to its original alignmrnt to avoide any vibration .All complete as per direction of the EIC.

Painting two coats of both inner & outer portion with best quality synthetic enamel paint (to be approved before use) including smoothing surface by sand paper for removing old paint of the motor as per direction of E.I.C.

Supply ,fittingand fixing of new nuts ,bolys,washer etc after removing the same from bearing cover /body covr/terinal box cover etc as requiredas per direction of EIC Each motor consist of one unit.

Labour charges for carriage of motor from site /dept store to company workshop and back to site/store after repair including loading unloading and installation the motor on the motor base. This item is only applicable when written permission is available from E.I.C Where is no facility for such work in the sub-division

Less Deduction towards dismantled burnt enamelled copper wire from induction motor on the basis of actual measurement to be retained by the agency =142.70Kg 142.70 X 351= 50087.70