WRDD/EEAM/MLD-I/ eNIT-21/2025-26/SL01

Works:-

Dismantling of different H.P 3 Phase 380-440 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. 17.5 H.P. / 20 H.P , 3 phase induction motor.

Rewinding with approved quality Super Enamel copper winding wire of standard guage IS 13730, 1996 part 13 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. (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: a) G.E.C/ Crompton Greaves /N.E.C -10.2Kgs. (b) Kirloskar - 10.5kgs., (c) Crompton (Old) - 12.5 Kgs. (Considering 3 nos of (a), 4 nos of (b) & 3 nos of (c))

(ii) 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.

Labour charge for carriage of motor from store to workshop and back to store after repair. This item is only applicable when written permission is available from E.I.C. where there is no facility for such work in the sub- division.

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

Repairing of damaged 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 alignment to avoid any vibration all complete as per direction of the E.I.C.

Supplying, fitting and fixing new stud, bolt with nuts and washer etc after removing the same from bearing cover, body cover, terminal box cover etc for upper flange as per sample.

Heat varnishing with best quality (Johnson & Johnson / Dr. Beck! Giliander) class 'E' insulating varnish of required quantity for 3 course & uniform heating at 800 C for 48 hrs. with all cost of materials, labour ar per direction of E.I.C. (c) Insulating varnish 1 lit for 20 HP induction motor.

Labour charge for checking up the dynamic balance of the motor shaft for original allignment as per direction of E.I.C

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 as per direction of E.I.C.

Testing of repaired motor by contious 8 hrs running on load as per direction of E.I.C.

DEDUCTION:-

Deduction towards dismantled burnt enamelled copper wire from induction motor on the basis of actual measurement to be retained by the agency.(Note: In case of PVC insulated copper wire to arrive at net burnt weight 10% deduction will be made) NB :- Contractors premiun will not be allowed in this item bill should be drawn deducting the actual measurement of burnt coil

Add GST 18%

Add Cess 1%

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