Tender For Mid/An/118
Tender Value
Ref. Documents
Estimated cost
Bid Submission
28 Oct 2022
0 days left
EMD
Ref. Documents
Bank guarantee accepted
Document Fee
500
Non-refundable
Tender Type
Online
Tender Overview
Organization
Tender ID
Competition Type
NCB
Bidding Type
Tender
Location / State
Rajouri → Jammu And Kashmir
EMD Exemption
Not Available
Quantity
Not Available
Website
Contact Person
Address
Project Description
Mid / An / 118 Fabrication, Providing And Fitting Of Copper Coils / Strips To 400Hp / 300Kw, Bhelmake, 3Phase 50Hz, 6.6Kv, Slip Ring Type, Vertical Solid Shaft Ht Motor ( Stator And Rotor ) With Allied Works At Lis Rajal.
BOQ
| Sl. No. | Item Description |
| 1 | Carriage of motor (Stator and rotor) from the pump house Rajal to workshop by suitable loading capacity load carrier for safe carriage/transportation to workshop of the firm for complete dismantling of motor which includes extraction of rotor out of stator. Removal of old banding from both ends of the rotor, de-soldering all the 72 connections of the strips to make the strips free to extract from respective slots. Extraction of all 144 Nos. of strips from 72 Nos. of rotor slots. Cleaning the slots with suitable chemical/solvents and rebuilding, reconditioning the damaged slots of rotor and complete rewinding of rotor by way of fabrication, providing and fitting of 144 Nos of new copper strips of similar Electrolytic value /grade in 72 Nos of rotor slots, insulation with newF class insulation material such as glass, tape, mica tape, slot liner, glass tape, wedges of mica etc, soldering of all the 72connection at both ends of the motor and the connection connecting the rotor winding the rotor cable leads, Applying Bectol Red/Grey varnishing with class F varnish of reputed make, Drying out the rotor at optimum controlled temperature as per standard practice and continuing the process till the standard maximum/required Insulation Resistance Value and Polarization Index test value is achieved,Providing /application of glass fiber resin banding at both ends of the rotor for over-hang portion of the rotor winding, varnishing the bands and providing /fitting in position of rotor connection leads of actual length and specification. Complete job includes the cost of material after deduction ofrebate on old material (Copper) and labour charges. |
| 2 | Straightening alignment setting of solids shaft of 400 HP,300 KW,6.6 KV, H.T. motor, re-metaling /depositing of metal on worn out portion on N.D.E& D.E of rotor shaft using low heat electrode followed by machining to bearing size .Repairs to end covers by enlarging the bore of the end cover bearing housing on D.E & N.D.E by enlarging the bores of housing. Providing, fabrication and fitting in position of sleeves into the enlarged bores followed by machining /polishing to achieve specified fit for outer cone of the bearings. The job includes dynamic balancing of the rotor after rewinding/repairs on balancing machine. Complete Job. |
| 3 | Providing and fitting of copper coils of stator by vacuum pressure impregnation procedure. The job includes de-solderingall the 54 connections of the stator coils to make each coil free for extractionfrom respective slots. Stripping out all the coils from the stator, checking out all the laminations after proper cleaning of core/slots, making it free from oil/ grease/other deposition and reconditioning of damaged slots/appropriate preparation of the stator for rewinding. The slotportions are to be wedged at the ends, centre and magnetic putty is to be inserted with adequate pressure to enhance flux linkage. Complete rewinding of the stator by way of fabrication of 54 Nos. of new copper coils from the enameled poly mica covered copper wire of suitable gauge size, shape and electrolytic grade 99.9% as per original copper wire used for old original coil. Insulation of coilswith the new F class insulation material of high quality such glassfibre or polyester and mica impregnated or glued together with epoxy, polyester amide (polyamide or polyimide), polyurethane or other resins having superior thermal stability, slot liner, slot spacers, glass tape, fine cotton tape, wedges of mica textile etc. Insertionof new coils in 54 No. slots of stator with the help of nomex paper and separator wedges and also insertion of packing /anti vibration blocks and locking the same properly.The coil ends must be rigidly supported and adequately braced with binding rings or tapes to prevent their movement and also absorb shocks & vibrations during excessive over-loads, starting inrush currents and voltage surges. Insulation of all the 54 No. of coils connections after brazing withbrazing rods (14% of silver brazing rods) by applying in layers of glass mica tape reinforced by the varnished glass sleeves. Insulating the connections of the stator coil and also cleaning connections connecting the complete stator with CRC2-26/electro. Varnishing the stator with class F Epoxy gel /varnish coat of reputed make and drying out at optimum controlled temperature as permissible in standard practice. Continuingthe drying out process till the required IR value is achieved, providing /fitting in position of stator connection leads of actual length and specification. Complete job includesthe cost of material after deduction of rebate on old material (Copper), labour charges also hire charges for deployment of tools & tackles .Complete Job. |
| 4 | Providing and fitting of new bearings in the bearing housingsa) 29338/C3 Thrust roller bearingb) 6248/C3 Ball bearingc) NU 326/C3 Cylindrical roller bearing.Complete Job includes cost of material after deduction of rebate on old material and labour charges. |
| 5 | Cleaning the top bearing oil chamber with flushing oil & providing and re-filling of fresh lubricating oil of actual specification up to the mark. |
| 6 | Carriage of the motor ( rotor and stator) from workshop of the firm to lift irrigation station Rajal, assembling of motor (rotor and stator) and placing of the motor on the motor skirt. Coupling the motor with VT pump half coupling , restoration of all electrical connections of motor to LRS, & slip rings, making proper alignment of motor with pump and adjustment thereof, tightening of all nuts, bolts/studs and Testing the motor on load for all connected parameters & commissioning for proper operation, Complete Job. |
| 7 | The above mentioned jobs include the cost of material, labour charges, all the taxes, transportation charges and all other charges as applicable. |
AI Tender Summary
Tender Timeline
Oct 13, 2022
11:30 IST
Tender Published
Tender notice published.
CompletedOct 28, 2022
17:00 IST
Bid Submission Deadline
Online submission via eProcurement portal.
CompletedOct 29, 2022
Bid Opening Date
Technical bids will be opened and evaluated.
CompletedTender Documents
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