Public Administrative Department Government Departments Closing in 14 days TDR #56464149

Bids Are invited for Custom Bid For Services - Rewinding Of Lt Motors - 147Kw-Mi Ngef-Scim , Stator: Dismantling The Motor And Threading Out The Rotor; Removing All The Failed Coils Of Stator Completely; Cleaning Of Slots; Conducting Hot Spot Test On

Issued by Government Departments · Cuddalore, Tamil Nadu
Tender Value
Ref. Documents
Estimated cost
Bid Submission
04 Aug 2026
14 days left
EMD
3.58 Lakhs
Bank guarantee accepted
Document Fee
Ref. Documents
Non-refundable
Tender Type
Gem

Tender Overview

Competition Type
NCB
Bidding Type
Tender
Location / State
Cuddalore → Tamil Nadu
EMD Exemption
Not Available
Quantity
Not Available

Project Description

Bids Are invited for Custom Bid For Services - Rewinding Of Lt Motors - 147Kw-Mi Ngef-Scim , Stator: Dismantling The Motor And Threading Out The Rotor; Removing All The Failed Coils Of Stator Completely; Cleaning Of Slots; Conducting Hot Spot Test On Thestator Core To Ensure Healthiness Of The Core. If Healthiness Of Stator Core Is Ensured, The Following Works Are To Be Carried Out. , Rewinding Of Stator: Giving A Coat Of Core Varnish To The Slots; Manufacturing And Rewinding Of All The Stator Coils Using New Enamelled Double Fibreglass Covered Electrolytic Rectangular Copper Strips With Class ‘F Insulating Materials Suitable For Vacuum Contactor Operation; Moulding The Slot Portion Of Winding Withsamicatherm Class ‘F Insulating Materials And Curing The Coils; Taping The Overhangs With Class ‘F Insulating Tapes; Glassoflex Or Equivalent Tape Shall Be Used For Sealing; Placing The Coils Into The Slots; Providing Glass Textolite Asbottom Liners, Interphase Separators, Top Liners And Wedges On Both The Edges Of Top Of The Slots; Providing Magnetic Wedges On Top Of The Slots Except On Both Edges; Effecting End Connections As In The Original Stator With Suitable Brazing Materials And Insulating With Glass Backed Mica Tapes; Binding Of Overhangs; Providing Of New Lead Out Cables And Terminating Them In The Terminal Box; Preheatingthe Stator Winding To Remove Moisture; Varnishing The Winding With Dr. Becks Varnish & Drying; Applying A Final Coat Of Epoxy Gel Coat Compound. [Retrieved Scrap Copper Shall Be Retained By You As Per The Tender Conditions]. , Refurbishing Stator: Giving A Coat Of Core Varnish ,Moulding The Slot Portion Of Winding With Samicatherm Class ‘F Insulating Materials And Curing The Coils; Taping The Overhangs With Class ‘F Insulating Tapes.Effecting End Connections Asin The Original Stator With Suitable Brazing Materials And Insulating With Glass Backed Mica Tapes; Binding Of Overhangs; Providing Of New Lead Out Cables And Terminating Them In The Terminal Box; Pre-Heating The Stator Winding To Remove Moisture; Varnishing The Winding With Dr. Becks Varnish & Drying; Applying A Final Coat Of Epoxy Gel Coat Compound. [Retrieved Scrap Copper[Old Lead Out Cables] Shall Be Retained By You As Per The Tender Conditions]. , Fabrication & Fixing Of Pedestal Similar To The Original Dimension & Motor On Both Sides As Directed By Site Incharge. , Rotor:Rotor Shaft Replacement :Replacing The Existing Cut / Bend Rotor Shaft By A New Shaft Having Dimensions And Material Composition Similar To Old Shaft. Material Composition Test For Both Old And New Shaft Shall Be Submitted Forapproval.(Test Certificate For The Material Composition Of Both Old & New Shaft From The Bis Approved /Nabl Accredited Laboratory Shall Be Furnished.) , Checking The Trueness Of Rotor For Any Correction Work On It & Furnishing The Readings Of Rotor Trueness. , Dynamic Balancing Of Rotor. [Dynamic Balancing Certificate Is To Be Produced.] , Miscellaneous: Providing Of New Bearings Of Existing Size In The De Side And Nde Side Of Skf, Fag And Timken Makes Only. Grease Used Shall Be Of Multipurpose. [Documentary Evidence Is To Be Produced For Genuineness Of The Bearings From The Manufacturer/ From Their Representatives. (Inspection Report For Genuineness)] , Providing Of New Felt Pack, Rubber Grease Seals, Grease Lines, Adopters With Grease Nipples With Dummy And Suitable Cl S And New Compression Springs On Both De & Nde Sides. , To & Fro Transport Charges Including Packing On Both The Places. Care Should Be Taken For Proper Packing. These Charges Also Include The Cost Of Unloading The Failed Motor & Loading The Repaired Motor At Bidders Works. (Loading The Failedmotor At Mine-I For Transporting It To The Bidders Works For Repairs And Unloading The Repaired Motor At Mine-I After Transporting It From The Bidders Works Will Bedone By Nlcil.) , Optional Works To Be Carried Out If Damage / Hot Spot Is Noticed: Checking The Bearing Seating Area On The Housing Of De Side Endshield. If Any Damage Has Been Noticed, The Same Has To Be Corrected Byproviding A New Cast Iron Sleeve. , Checking The Bearing Seating Area On The Housing Of Nde Side Endshield. If Any Damage Has Been Noticed, The Same Has To Be Corrected By Providing A New Cast Iron Sleeve. , Assembling, Testing & Painting Works:Providing New Steel Bolts & Nuts For Assembling The Motor.Assembling The Stator & Rotor Into Motor With Provided Items For Free Rotation Of Rotor.Measuring Of Dcr & Ir Values Of Stator & Rotor,Taking Trial Run For Observation And Recording The No Load Current.Cleaning Andpainting The Assembled - Finished Motor With A Coat Of Red Oxide Paint And Two Coats Of Spray Painting With Grey Colour Paint. Motor Serial No, Make,Rpm, Capacity Are To Be Written Clearly On The Stator Body With Paint. , 147Kw-Mi Siemens-Scim , Stator: Dismantling The Motor And Threading Out The Rotor; Removing All The Failed Coils Of Stator Completely; Cleaning Of Slots; Conducting Hot Spot Test On Thestator Core To Ensure Healthiness Of The Core. P.S. If Hot Spot Is Noticed, Item No. 4.1 Shall Be Carried Out. If Healthiness Of Stator Core Is Ensured, The Following Works Are To Be Carried Out. , Rewinding Of Stator: Giving A Coat Of Core Varnish To The Slots; Manufacturing And Rewinding Of All The Stator Coils Using New Enamelled Double Fibreglass Coveredelectrolytic Rectangular Copper Strips With Class ‘F Insulating Materials Suitable For Vacuum Contactor Operation; Moulding The Slot Portion Of Winding Withsamicatherm Class ‘F Insulating Materials And Curing The Coils; Taping The Overhangs With Class ‘F Insulating Tapes; Glassoflex Or Equivalent Tape Shall Be Used For Sealing; Placing The Coils Into The Slots; Providing Glass Textolite Asbottom Liners, Interphase Separators, Top Liners And Wedges On Both The Edges Of Top Of The Slots; Providing Magnetic Wedges On Top Of The Slots Except On Both Edges; Effecting End Connections As In The Original Stator With Suitable Brazing Materials And Insulating With Glass Backed Mica Tapes; Binding Of Overhangs; Providing Of New Lead Out Cables And Terminating Them In The Terminal Box; Preheatingthe Stator Winding To Remove Moisture; Varnishing The Winding With Dr. Becks Varnish & Drying; Applying A Final Coat Of Epoxy Gel Coat Compound. [Retrieved Scrap Copper Shall Be Retained By You As Per The Tender Conditions]. , Rotor: Dismantling The Motor And Threading Out The Rotor; Removing All Rotor Bars Of The Rotor Completely; Cleaning Of Slots; Conducting Hot Spot Test On Therotor Core To Ensure Healthiness Of The Core. P.S. If Hot Spot Is Noticed, Item No. 4.2 Shall Be Carried Out. If Healthiness Of Rotor Core Is Ensured, The Followingworks Are To Be Carried Out. , Rewinding Of Rotor - Cage Rotor: Complete Rewinding Of All The Rotor Bars Using New Electrolytic Rectangular Copper Conductor Bars With Class ‘F Insulatingmaterials; Shaping Of Conductors For Soldering; Soldering The Bars With Suitable Rings. Pre-Heating The Rotor Bars To Remove Moisture; Varnishing The Cage Rotorwith Dr. Becks Varnish Of ‘F Class & Drying; Applying A Final Coat Of Epoxy Gel Coat Compound. [Retrieved Scrap Copper Shall Be Retained By You As Per The Tender Conditions]. , Checking The Trueness Of Rotor For Any Correction Work On It & Furnishing The Readings Of Rotor Trueness. , Dynamic Balancing Of Rotor. [Dynamic Balancing Certificate Is To Be Produced.] , Miscellaneous: Providing Of New Bearings Of Existing Size In The De Side And Nde Side Of Skf, Fag And Timken Makes Only. Grease Used Shall Be Of Multipurpose. [Documentary Evidence Is To Be Produced For Genuineness Of The Bearings From The Manufacturer/ From Their Representatives. (Inspection Report For Genuineness)] , Providing Of New Felt Pack, Rubber Grease Seals, Grease Lines, Adopters With Grease Nipples With Dummy And Suitable Cl S And New Compression Springs On Both De & Nde Sides. , To & Fro Transport Charges Including Packing On Both The Places. Care Should Be Taken For Proper Packing. These Charges Also Include The Cost Of Unloading The Failed Motor & Loading The Repaired Motor At Bidders Works. (Loading The Failedmotor At Mine-I For Transporting It To The Bidders Works For Repairs And Unloading The Repaired Motor At Mine-I After Transporting It From The Bidders Works Will Be Done By Nlcil.) , Optional Works To Be Carried Out If Damage / Hot Spot Is Noticed: Re-Stacking Of Stator Core: Removing The Stator Core Pack From Theshell; Removing All The Stator Core Lamination, Thorough Cleaning Of Laminations And Reinsulating Them With Uniform Coating Of Core Varnish; Staggering & Restacking All The Core Laminations; Correcting The Slot Portion;Conducting The Hotspot Test. , Re-Stacking Of Rotor Core: Stripping All The Bars Of Failed Rotor ; Cleaning Of Slots; Conducting Hot Spot Test; Removing All The Rotor Core Laminations, Thoroughcleaning Of Laminations And Re-Insulating Them With Uniform Coating Of Core Varnish; Staggering & Re-Stacking All The Core Laminations; Correcting The Slot Portion; Conducting Hot Spot Test. , Checking The Bearing Seating Area On De Side Of Rotor Shaft. If Any Damage Has Been Noticed, Pre-Heating, Metallising Using Low Heat Input Electrode Of Size 2.5Mm/3.15Mm Dia. For Welding Steel Or Dissimilar Steels, Machining And Stressrelieving Of De Side Bearing Seating Area On Rotor Shaft Are To Be Carried Out.[Stress-Relieving Chart Has To Be Produced] , Checking The Bearing Seating Area On Nde Side Of Rotor Shaft. If Any Damage Has Been Noticed, Pre-Heating, Metallising Using Low Heat Input Electrode Of Size 2.5Mm/3.15Mm Dia. For Welding Steel Or Dissimilar Steels, Machining And Stressrelieving Of Nde Side Bearing Seating Area On Rotor Shaft Are To Be Carried Out.[Stress-Relieving Chart Has To Be Produced] , Checking The Bearing Seating Area On The Housing Of De Side Endshield. If Any Damage Has Been Noticed, The Same Has To Be Corrected By Providing A New Cast Iron Sleeve. , Checking The Bearing Seating Area On The Housing Of Nde Side Endshield. If Any Damage Has Been Noticed, The Same Has To Be Corrected By Providing A New Cast Iron Sleeve. , Assembling, Testing & Painting Works:Providing New Steel Bolts & Nuts For Assembling The Motor.Assembling The Stator & Rotor Into Motor With Provided Items For Free Rotation Of Rotor.Measuring Of Dcr & Ir Values Of Stator & Rotor,Taking Trial Run For Observation And Recording The No Load Current.Cleaning Andpainting The Assembled - Finished Motor With A Coat Of Red Oxide Paint And Two Coats Of Spray Painting With Grey Colour Paint. Motor Serial No, Make,Rpm, Capacity Are To Be Written Clearly On The Stator Body With Paint. , 200Kw-Mi Ngef-Srim , Rotor: Dismantling The Motor And Threading Out The Rotor; Removing All The Failed Coils Of Rotor Completely; Cleaning Of Slots; Conducting Hot Spot Test On Therotor Core To Ensure Healthiness Of The Core. If Healthiness Of Rotor Core Is Ensured, The Following Works Are To Be Carried Out. , Rewinding Of Rotor: Complete Rewinding Of All The Rotor Bars Using New Electrolytic Rectangular Copper Conductor Bars With Class ‘F Insulating Materials; Shaping Of Conductors For Soldering; Soldering The Bars With Suitable Cl S;Banding The Overhangs With Resiglass Tape Or Non-Metallic Banding Tape Ofsuitable Cross-Section And Tension To Withstand The Centrifugal Forces In Operation; Connecting The Winding To The Sliprings And Insulating Them; Pre-Heating The Rotorwinding To Remove Moisture; Varnishing The Winding With Dr. Becks Varnish Of ‘Fclass & Drying; Applying A Final Coat Of Epoxy Gel Coat Compound. [Retrieved Scrap Copper Shall Be Retained By You As Per The Tender Conditions]. , Checking The Trueness Of Rotor For Any Correction Work On It & Furnishing The Readings Of Rotor Trueness. , Dynamic Balancing Of Rotor. [Dynamic Balancing Certificate Is To Be Produced.] , Miscellaneous: Providing New Brush-Rack Assemblies With Brush-Holders,Brushes, Brush-Holder Fixing Rods; Providing Cables With One Side Terminal Studs Connected To The Rotor Terminal Box [Each Stud Shall Be Of 16Mm Diameter Fittedwith 2Nos. Brass Nuts & 2 Nos. Brass Washers]; Providing Of 6 Nos. Bushings And 3Mm Thick Copper Link Plates (3 Nos.) For Shorting The Rotor Terminal Studs Of Samephase; Providing Suitable Lugs On The Other Side Of Cables For Connecting The Brush-Rack Assembly At Slipring Unit. , Providing A New Forged Copper Slipring Unit Of Identical Dimension And Material Composition As Per The S Le; Connecting The Slipring Unit To The Rotor Winding By Brazing The Connecting Plates And Lead-Outs At The Star-Point. (Test Certificatefor The Material Composition Of Both Old & New Slipring Units From The Bis Approved /Nabl Accredited Laboratory Shall Be Furnished.) , Providing Of New Felt Pack, Rubber Grease Seals, Grease Lines, Adopters With Grease Nipples With Dummy And Suitable Cl S And New Compression Springs On Both De & Nde Sides. , If Needed, Original Unavailable / Damaged, Providing Of A New Fan, Fan Cover And Terminal Box Covers Made Of Suitable Metal And Material , Providing Of New Bearings Of Existing Size In The De Side And Nde Side Of Skf, Fag And Timken Makes Only. Grease Used Shall Be Of Multipurpose.[Documentary Evidence Is To Be Produced For Genuineness Of The Bearings From The Manufacturer/ From Their Representatives. (Inspection Report For Genuineness)] , To & Fro Transport Charges Including Packing On Both The Places. Care Should Be Taken For Proper Packing. These Charges Also Include The Cost Of Unloading The Failed Motor & Loading The Repaired Motor At Bidders Works. (Loading The Failedmotor At Mine-I For Transporting It To The Bidders Works For Repairs And Unloading The Repaired Motor At Mine-I After Transporting It From The Bidders Works Will Bedone By Nlcil.) , Optional Works To Be Carried Out If Damage / Hot Spot Is Noticed: Checking The Bearing Seating Area On De Side Of Rotor Shaft. If Anydamage Has Been Noticed, Pre-Heating, Metallising Using Low Heat Input Electrode Of Size 2.5Mm/3.15Mm Dia. For Welding Steel Or Dissimilar Steels, Machining And Stress-Relieving Of De Side Bearing Seating Area On Rotor Shaft Are To Be Carried Out. [Stress-Relieving Chart Has To Be Produced] , Checking The Bearing Seating Area On Nde Side Of Rotor Shaft. If Any Damage Has Been Noticed, Pre-Heating, Metallising Using Low Heat Input Electrode Of Size 2.5Mm/3.15Mm Dia. For Welding Steel Or Dissimilar Steels, Machining And Stress Relieving Of Nde Side Bearing Seating Area On Rotor Shaft Are To Be Carried Out. [Stress-Relieving Chart Has To Be Produced] , Checking The Bearing Seating Area On The Housing Of De Side Endshield. If Any Damage Has Been Noticed, The Same Has To Be Corrected By Providing A New Cast Iron Sleeve. , Checking The Bearing Seating Area On The Housing Of Nde Side Endshield. If Any Damage Has Been Noticed, The Same Has To Be Corrected By Providing A New Cast Iron Sleeve. , Assembling, Testing & Painting Works:Providing New Steel Bolts & Nuts For Assembling The Motor. Assembling The Stator & Rotor Into Motor With Provided Items For Free Rotation Of Rotor.Measuring Of Dcr & Ir Values Of Stator & Rotor, Taking Trial Run For Observation And Recording The No Load Current. Cleaning And Painting The Assembled - Finished Motor With A Coat Of Red Oxide Paint And Two Coats Of Spray Painting With Grey Colour Paint. Motor Serial No, Make,Rpm,Capacity Are To Be Written Clearly On The Stator Body With Paint. , 240Kw-Mi Siemens-Srim , Stator: Dismantling The Motor And Threading Out The Rotor; Removing All The Failed Coils Of Stator Completely; Cleaning Of Slots; Conducting Hot Spot Test On Thestator Core To Ensure Healthiness Of The Core. P.S. If Hot Spot Is Noticed, Item No. 4.1 Shall Be Carried Out. If Healthiness Of Stator Core Is Ensured, The Following Works Are To Be Carried Out. , Rewinding Of Stator: Giving A Coat Of Core Varnish To The Slots; Manufacturing And Rewinding Of All The Stator Coils Using New Enamelled Double Fibreglass Coveredelectrolytic Rectangular Copper Strips With Class ‘F Insulating Materials Suitable For Vacuum Contactor Operation; Moulding The Slot Portion Of Winding Withsamicatherm Class ‘F Insulating Materials And Curing The Coils; Taping The Overhangs With Class ‘F Insulating Tapes; Glassoflex Or Equivalent Tape Shall Be Used For Sealing; Placing The Coils Into The Slots; Providing Glass Textolite Asbottom Liners, Interphase Separators, Top Liners And Wedges On Both The Edges Of Top Of The Slots; Providing Magnetic Wedges On Top Of The Slots Except On Both Edges; Effecting End Connections As In The Original Stator With Suitable Brazing Materials And Insulating With Glass Backed Mica Tapes; Binding Of Overhangs; Providing Of New Lead Out Cables And Terminating Them In The Terminal Box; Preheatingthe Stator Winding To Remove Moisture; Varnishing The Winding With Dr. Becks Varnish & Drying; Applying A Final Coat Of Epoxy Gel Coat Compound. [Retrieved Scrap Copper Shall Be Retained By You As Per The Tender Conditions]. , Rotor: Dismantling The Motor And Threading Out The Rotor; Removing All The Failed Coils Of Rotor Completely; Cleaning Of Slots; Conducting Hot Spot Test On Therotor Core To Ensure Healthiness Of The Core. P.S. If Hot Spot Is Noticed, Item No. 3.1 Shall Be Carried Out. If Healthiness Of Rotor Core Is Ensured, The Followingworks Are To Be Carried Out. , Rewinding Of Rotor: Complete Rewinding Of All The Rotor Bars Using New Electrolytic Rectangular Copper Conductor Bars With Class ‘F Insulating Materials; Shaping Of Conductors For Soldering; Soldering The Bars With Suitable Cl S;Banding The Overhangs With Resiglass Tape Or Non-Metallic Banding Tape Ofsuitable Cross-Section And Tension To Withstand The Centrifugal Forces In Operation; Connecting The Winding To The Sliprings And Insulating Them; Pre-Heating The Rotorwinding To Remove Moisture; Varnishing The Winding With Dr. Becks Varnish Of ‘F Class & Drying; Applying A Final Coat Of Epoxy Gel Coat Compound. [Retrievedscrap Copper Shall Be Retained By You As Per The Tender Conditions]. , Checking The Trueness Of Rotor For Any Correction Work On It & Furnishing The Readings Of Rotor Trueness. , Dynamic Balancing Of Rotor. [Dynamic Balancing Certificate Is To Be Produced.] , Miscellaneous:Providing New Brush-Rack Assemblies With Brush-Holders,Brushes, Brush-Holder Fixing Rods; Providing Cables With One Side Terminal Studs Connected To The Rotor Terminal Box [Each Stud Shall Be Of 16Mm Diameter Fittedwith 2Nos. Brass Nuts & 2 Nos. Brass Washers]; Providing Of 6 Nos. Bushings And 3Mm Thick Copper Link Plates (3 Nos.) For Shorting The Rotor Terminal Studs Of Samephase; Providing Suitable Lugs On The Other Side Of Cables For Connecting The Brush-Rack Assembly At Slipring Unit. , Providing A New Forged Copper Slipring Unit Of Identical Dimension And Material Composition As Per The S Le; Connecting The Slipring Unit To The Rotor Winding By Brazing The Connecting Plates And Lead-Outs At The Star-Point. (Test Certificatefor The Material Composition Of Both Old & New Slipring Units From The Bis Approved /Nabl Accredited Laboratory Shall Be Furnished.) , Providing Of New Bearings Of Existing Size In The De Side And Nde Side Of Skf, Fag And Timken Makes Only. Grease Used Shall Be Of Multipurpose. [Documentary Evidence Is To Be Produced For Genuineness Of The Bearings From The Manufacturer/ From Their Representatives. (Inspection Report For Genuineness)] , Providing Of New Felt Pack, Rubber Grease Seals, Grease Lines, Adopters With Grease Nipples With Dummy And Suitable Cl S And New Compression Springs On Both De & Nde Sides. , If Needed, Original Unavailable / Damaged, Providing Of A New Fan, Fan Cover And Terminal Box Covers Made Of Suitable Metal And Material , To & Fro Transport Charges Including Packing On Both The Places. Care Should Be Taken For Proper Packing. These Charges Also Include The Cost Of Unloading The Failed Motor & Loading The Repaired Motor At Bidders Works. (Loading The Failedmotor At Mine-I For Transporting It To The Bidders Works For Repairs And Unloading The Repaired Motor At Mine-I After Transporting It From The Bidders Works Will Bedone By Nlcil.) , Optional Works To Be Carried Out If Damage / Hot Spot Is Noticed: Re-Stacking Of Stator Core: Removing The Stator Core Pack From Theshell; Removing All The Stator Core Lamination, Thorough Cleaning Of Laminations And Reinsulating Them With Uniform Coating Of Core Varnish; Staggering & Restacking All The Core Laminations; Correcting The Slot Portion;Conducting The Hotspot Test. , Re-Stacking Of Rotor Core: Stripping All The Bars Of Failed Rotor ; Cleaning Of Slots; Conducting Hot Spot Test; Removing All The Rotor Core Laminations, Thorough Cleaning Of Laminations And Re-Insulating Them With Uniform Coating Of Core Varnish; Staggering & Re-Stacking All The Core Laminations; Correcting The Slotportion; Conducting Hot Spot Test. , Checking The Bearing Seating Area On De Side Of Rotor Shaft. If Any Damage Has Been Noticed, Pre-Heating, Metallising Using Low Heat Input Electrode Of Size2.5Mm/3.15Mm Dia. For Welding Steel Or Dissimilar Steels, Machining And Stressrelieving Of De Side Bearing Seating Area On Rotor Shaft Are To Be Carried Out. [Stress-Relieving Chart Has To Be Produced] , Checking The Bearing Seating Area On Nde Side Of Rotor Shaft. If Any Damage Has Been Noticed, Pre-Heating, Metallising Using Low Heat Input Electrode Of Size 2.5Mm/3.15Mm Dia. For Welding Steel Or Dissimilar Steels, Machining And Stress Relieving Of Nde Side Bearing Seating Area On Rotor Shaft Are To Be Carried Out. [Stress-Relieving Chart Has To Be Produced] , Checking The Bearing Seating Area On The Housing Of De Side Endshield. If Any Damage Has Been Noticed, The Same Has To Be Corrected By Providing A New Cast Iron Sleeve. , Checking The Bearing Seating Area On The Housing Of Nde Side Endshield. If Any Damage Has Been Noticed, The Same Has To Be Corrected By Providing A New Cast Iron Sleeve. , Assembling, Testing & Painting Works:Providing New Steel Bolts & Nuts For Assembling The Motor. Assembling The Stator & Rotor Into Motor With Provided Items For Free Rotation Of Rotor.Measuring Of Dcr & Ir Values Of Stator & Rotor, Taking Trial Run For Observation And Recording The No Load Current.Cleaning And Painting The Assembled - Finished Motor With A Coat Of Red Oxide Paint And Two Coats Of Spray Painting With Grey Colour Paint. Motor Serial No, Make,Rpm, Capacity Are To Be Written Clearly On The Stator Body With Paint.

BOQ

Sl. No. Item TitleItem Description
1147Kw-MI NGEF-SCIM147Kw-MI NGEF-SCIM
2STATOR: Dismantling the motor and threading out the rotor; Removing all the failed coils of stator completely; Cleaning of slots; Conducting hot spot test on thestator core to ensure healthiness of the core. If healthiness of Stator core is ensured, the following works are to be carried out.STATOR: Dismantling the motor and threading out the rotor; Removing all the failed coils of stator completely; Cleaning of slots; Conducting hot spot test on thestator core to ensure healthiness of the core. If healthiness of Stator core is ensured, the following works are to be carried out.
3Rewinding of Stator: Giving a coat of core varnish to the slots; Manufacturing and rewinding of all the stator coils using new enamelled double fibreglass covered electrolytic rectangular copper strips with class ‘F’ insulating materials suitable for vacuum contactor operation; Moulding the slot portion of winding withsamicatherm class ‘F insulating materials and curing the coils; taping the overhangs with class ‘F’ insulating tapes; Glassoflex or equivalent tape shall be used for sealing; placing the coils into the slots; providing glass textolite asbottom liners, interphase separators, top liners and wedges on both the edges of top of the slots; providing magnetic wedges on top of the slots except on both edges; Effecting end connections as in the original stator with suitable brazing materials and insulating with glass backed mica tapes; Binding of overhangs; providing of new lead out cables and terminating them in the terminal box; Preheatingthe stator winding to remove moisture; Varnishing the winding with Dr. Beck’s Varnish & drying; Applying a final coat of epoxy gel coat compound. [Retrieved scrap copper shall be retained by you as per the tender conditions].Rewinding of Stator: Giving a coat of core varnish to the slots; Manufacturing and rewinding of all the stator coils using new enamelled double fibreglass covered electrolytic rectangular copper strips with class ‘F’ insulating materials suitable for vacuum contactor operation; Moulding the slot portion of winding withsamicatherm class ‘F insulating materials and curing the coils; taping the overhangs with class ‘F’ insulating tapes; Glassoflex or equivalent tape shall be used for sealing; placing the coils into the slots; providing glass textolite asbottom liners, interphase separators, top liners and wedges on both the edges of top of the slots; providing magnetic wedges on top of the slots except on both edges; Effecting end connections as in the original stator with suitable brazing materials and insulating with glass backed mica tapes; Binding of overhangs; providing of new lead out cables and terminating them in the terminal box; Preheatingthe stator winding to remove moisture; Varnishing the winding with Dr. Beck’s Varnish & drying; Applying a final coat of epoxy gel coat compound. [Retrieved scrap copper shall be retained by you as per the tender conditions].
4Refurbishing Stator: Giving a coat of core varnish ,Moulding the slot portion of winding with samicatherm class ‘F insulating materials and curing the coils; taping the overhangs with class ‘F’ insulating tapes.Effecting end connections asin the original stator with suitable brazing materials and insulating with glass backed mica tapes; Binding of overhangs; providing of new lead out cables and terminating them in the terminal box; Pre-heating the stator winding to remove moisture; Varnishing the winding with Dr. Beck’s Varnish & drying; Applying a final coat of epoxy gel coat compound. [Retrieved scrap copper[Old lead out cables] shall be retained by you as per the tender conditions].Refurbishing Stator: Giving a coat of core varnish ,Moulding the slot portion of winding with samicatherm class ‘F insulating materials and curing the coils; taping the overhangs with class ‘F’ insulating tapes.Effecting end connections asin the original stator with suitable brazing materials and insulating with glass backed mica tapes; Binding of overhangs; providing of new lead out cables and terminating them in the terminal box; Pre-heating the stator winding to remove moisture; Varnishing the winding with Dr. Beck’s Varnish & drying; Applying a final coat of epoxy gel coat compound. [Retrieved scrap copper[Old lead out cables] shall be retained by you as per the tender conditions].
5Fabrication & fixing of pedestal similar to the original dimension & motor on both sides as directed by site incharge.Fabrication & fixing of pedestal similar to the original dimension & motor on both sides as directed by site incharge.
6ROTOR:Rotor shaft replacement :Replacing the existing cut / bend rotor shaft by a new shaft having dimensions and material composition similar to old shaft. Material composition test for both old and new shaft shall be submitted forapproval.(Test certificate for the material composition of both old & new Shaft from the BIS approved /NABL accredited laboratory shall be furnished.)ROTOR:Rotor shaft replacement :Replacing the existing cut / bend rotor shaft by a new shaft having dimensions and material composition similar to old shaft. Material composition test for both old and new shaft shall be submitted forapproval.(Test certificate for the material composition of both old & new Shaft from the BIS approved /NABL accredited laboratory shall be furnished.)
7Checking the trueness of rotor for any correction work on it & furnishing the readings of rotor trueness.Checking the trueness of rotor for any correction work on it & furnishing the readings of rotor trueness.
8Dynamic balancing of rotor. [Dynamic balancing certificate is to be produced.]Dynamic balancing of rotor. [Dynamic balancing certificate is to be produced.]
9MISCELLANEOUS: Providing of new bearings of existing size in the DE side and NDE side of SKF, FAG and TIMKEN makes only. Grease used shall be of Multipurpose. [Documentary evidence is to be produced for genuineness of the bearings from the manufacturer/ from their representatives. (Inspection report for genuineness)]MISCELLANEOUS: Providing of new bearings of existing size in the DE side and NDE side of SKF, FAG and TIMKEN makes only. Grease used shall be of Multipurpose. [Documentary evidence is to be produced for genuineness of the bearings from the manufacturer/ from their representatives. (Inspection report for genuineness)]
10Providing of new felt pack, rubber grease seals, grease lines, adopters with grease nipples with dummy and suitable clamps and new compression springs on both DE & NDE sides.Providing of new felt pack, rubber grease seals, grease lines, adopters with grease nipples with dummy and suitable clamps and new compression springs on both DE & NDE sides.
11To & fro transport charges including packing on both the places. Care should be taken for proper packing. These charges also include the cost of unloading the failed motor & loading the repaired motor at bidder’s works. (Loading the failedmotor at Mine-I for transporting it to the bidder’s works for repairs and unloading the repaired motor at Mine-I after transporting it from the bidder’s works will bedone by NLCIL.)To & fro transport charges including packing on both the places. Care should be taken for proper packing. These charges also include the cost of unloading the failed motor & loading the repaired motor at bidder’s works. (Loading the failedmotor at Mine-I for transporting it to the bidder’s works for repairs and unloading the repaired motor at Mine-I after transporting it from the bidder’s works will bedone by NLCIL.)
12OPTIONAL WORKS TO BE CARRIED OUT IF DAMAGE / HOT SPOT IS NOTICED: Checking the bearing seating area on the housing of DE side endshield. If any damage has been noticed, the same has to be corrected byproviding a new cast iron sleeve.OPTIONAL WORKS TO BE CARRIED OUT IF DAMAGE / HOT SPOT IS NOTICED: Checking the bearing seating area on the housing of DE side endshield. If any damage has been noticed, the same has to be corrected byproviding a new cast iron sleeve.
13Checking the bearing seating area on the housing of NDE side endshield. If any damage has been noticed, the same has to be corrected by providing a new cast iron sleeve.Checking the bearing seating area on the housing of NDE side endshield. If any damage has been noticed, the same has to be corrected by providing a new cast iron sleeve.
14Assembling, Testing & Painting Works:Providing new steel Bolts & Nuts for assembling the Motor.Assembling the Stator & Rotor into Motor with provided items for free rotation of rotor.Measuring of DCR & IR Values of Stator & Rotor,Taking trial run for observation and recording the no load current.Cleaning andPainting the assembled - finished Motor with a coat of Red oxide paint and two coats of spray painting with Grey colour paint. Motor serial no, Make,RPM, Capacity are to be written clearly on the Stator body with paint.Assembling, Testing & Painting Works:Providing new steel Bolts & Nuts for assembling the Motor.Assembling the Stator & Rotor into Motor with provided items for free rotation of rotor.Measuring of DCR & IR Values of Stator & Rotor,Taking trial run for observation and recording the no load current.Cleaning andPainting the assembled - finished Motor with a coat of Red oxide paint and two coats of spray painting with Grey colour paint. Motor serial no, Make,RPM, Capacity are to be written clearly on the Stator body with paint.
15147Kw-MI Siemens-SCIM147Kw-MI Siemens-SCIM
16STATOR: Dismantling the motor and threading out the rotor; Removing all the failed coils of stator completely; Cleaning of slots; Conducting hot spot test on thestator core to ensure healthiness of the core. P.S. If hot spot is noticed, item No. 4.1 shall be carried out. If healthiness of Stator core is ensured, the following works are to be carried out.STATOR: Dismantling the motor and threading out the rotor; Removing all the failed coils of stator completely; Cleaning of slots; Conducting hot spot test on thestator core to ensure healthiness of the core. P.S. If hot spot is noticed, item No. 4.1 shall be carried out. If healthiness of Stator core is ensured, the following works are to be carried out.
17Rewinding of Stator: Giving a coat of core varnish to the slots; Manufacturing and rewinding of all the stator coils using new enamelled double fibreglass coveredelectrolytic rectangular copper strips with class ‘F’ insulating materials suitable for vacuum contactor operation; Moulding the slot portion of winding withsamicatherm class ‘F insulating materials and curing the coils; taping the overhangs with class ‘F’ insulating tapes; Glassoflex or equivalent tape shall be used for sealing; placing the coils into the slots; providing glass textolite asbottom liners, interphase separators, top liners and wedges on both the edges of top of the slots; providing magnetic wedges on top of the slots except on both edges; Effecting end connections as in the original stator with suitable brazing materials and insulating with glass backed mica tapes; Binding of overhangs; providing of new lead out cables and terminating them in the terminal box; Preheatingthe stator winding to remove moisture; Varnishing the winding with Dr. Beck’s Varnish & drying; Applying a final coat of epoxy gel coat compound. [Retrieved scrap copper shall be retained by you as per the tender conditions].Rewinding of Stator: Giving a coat of core varnish to the slots; Manufacturing and rewinding of all the stator coils using new enamelled double fibreglass coveredelectrolytic rectangular copper strips with class ‘F’ insulating materials suitable for vacuum contactor operation; Moulding the slot portion of winding withsamicatherm class ‘F insulating materials and curing the coils; taping the overhangs with class ‘F’ insulating tapes; Glassoflex or equivalent tape shall be used for sealing; placing the coils into the slots; providing glass textolite asbottom liners, interphase separators, top liners and wedges on both the edges of top of the slots; providing magnetic wedges on top of the slots except on both edges; Effecting end connections as in the original stator with suitable brazing materials and insulating with glass backed mica tapes; Binding of overhangs; providing of new lead out cables and terminating them in the terminal box; Preheatingthe stator winding to remove moisture; Varnishing the winding with Dr. Beck’s Varnish & drying; Applying a final coat of epoxy gel coat compound. [Retrieved scrap copper shall be retained by you as per the tender conditions].
18ROTOR: Dismantling the motor and threading out the rotor; Removing all rotor bars of the rotor completely; Cleaning of slots; Conducting hot spot test on therotor core to ensure healthiness of the core. P.S. If hot spot is noticed, item No. 4.2 shall be carried out. If healthiness of rotor core is ensured, the followingworks are to be carried out.ROTOR: Dismantling the motor and threading out the rotor; Removing all rotor bars of the rotor completely; Cleaning of slots; Conducting hot spot test on therotor core to ensure healthiness of the core. P.S. If hot spot is noticed, item No. 4.2 shall be carried out. If healthiness of rotor core is ensured, the followingworks are to be carried out.
19Rewinding of Rotor - Cage Rotor: Complete rewinding of all the rotor bars using new electrolytic rectangular copper conductor bars with class ‘F’ insulatingmaterials; shaping of conductors for soldering; soldering the bars with suitable rings. Pre-heating the rotor bars to remove moisture; Varnishing the cage rotorwith Dr. Beck’s Varnish of ‘F’ class & drying; Applying a final coat of epoxy gel coat compound. [Retrieved scrap copper shall be retained by you as per the tender conditions].Rewinding of Rotor - Cage Rotor: Complete rewinding of all the rotor bars using new electrolytic rectangular copper conductor bars with class ‘F’ insulatingmaterials; shaping of conductors for soldering; soldering the bars with suitable rings. Pre-heating the rotor bars to remove moisture; Varnishing the cage rotorwith Dr. Beck’s Varnish of ‘F’ class & drying; Applying a final coat of epoxy gel coat compound. [Retrieved scrap copper shall be retained by you as per the tender conditions].
20Checking the trueness of rotor for any correction work on it & furnishing the readings of rotor trueness.Checking the trueness of rotor for any correction work on it & furnishing the readings of rotor trueness.
21Dynamic balancing of rotor. [Dynamic balancing certificate is to be produced.]Dynamic balancing of rotor. [Dynamic balancing certificate is to be produced.]
22MISCELLANEOUS: Providing of new bearings of existing size in the DE side and NDE side of SKF, FAG and TIMKEN makes only. Grease used shall be of Multipurpose. [Documentary evidence is to be produced for genuineness of the bearings from the manufacturer/ from their representatives. (Inspection report for genuineness)]MISCELLANEOUS: Providing of new bearings of existing size in the DE side and NDE side of SKF, FAG and TIMKEN makes only. Grease used shall be of Multipurpose. [Documentary evidence is to be produced for genuineness of the bearings from the manufacturer/ from their representatives. (Inspection report for genuineness)]
23Providing of new felt pack, rubber grease seals, grease lines, adopters with grease nipples with dummy and suitable clamps and new compression springs on both DE & NDE sides.Providing of new felt pack, rubber grease seals, grease lines, adopters with grease nipples with dummy and suitable clamps and new compression springs on both DE & NDE sides.
24To & fro transport charges including packing on both the places. Care should be taken for proper packing. These charges also include the cost of unloading the failed motor & loading the repaired motor at bidder’s works. (Loading the failedmotor at Mine-I for transporting it to the bidder’s works for repairs and unloading the repaired motor at Mine-I after transporting it from the bidder’s works will be done by NLCIL.)To & fro transport charges including packing on both the places. Care should be taken for proper packing. These charges also include the cost of unloading the failed motor & loading the repaired motor at bidder’s works. (Loading the failedmotor at Mine-I for transporting it to the bidder’s works for repairs and unloading the repaired motor at Mine-I after transporting it from the bidder’s works will be done by NLCIL.)
25OPTIONAL WORKS TO BE CARRIED OUT IF DAMAGE / HOT SPOT IS NOTICED: Re-stacking of stator core: Removing the stator core pack from theshell; Removing all the stator core lamination, thorough cleaning of laminations and reinsulating them with uniform coating of core varnish; staggering & restacking all the core laminations; correcting the slot portion;conducting the hotspot test.OPTIONAL WORKS TO BE CARRIED OUT IF DAMAGE / HOT SPOT IS NOTICED: Re-stacking of stator core: Removing the stator core pack from theshell; Removing all the stator core lamination, thorough cleaning of laminations and reinsulating them with uniform coating of core varnish; staggering & restacking all the core laminations; correcting the slot portion;conducting the hotspot test.
26Re-stacking of rotor core: Stripping all the bars of failed rotor ; Cleaning of slots; conducting hot spot test; Removing all the rotor core laminations, thoroughcleaning of laminations and re-insulating them with uniform coating of core varnish; Staggering & re-stacking all the core laminations; correcting the slot portion; conducting hot spot test.Re-stacking of rotor core: Stripping all the bars of failed rotor ; Cleaning of slots; conducting hot spot test; Removing all the rotor core laminations, thoroughcleaning of laminations and re-insulating them with uniform coating of core varnish; Staggering & re-stacking all the core laminations; correcting the slot portion; conducting hot spot test.
27Checking the bearing seating area on DE side of rotor shaft. If any damage has been noticed, pre-heating, metallising using low heat input electrode of size 2.5mm/3.15mm dia. for welding steel or dissimilar steels, machining and stressrelieving of DE side bearing seating area on rotor shaft are to be carried out.[stress-relieving chart has to be produced]Checking the bearing seating area on DE side of rotor shaft. If any damage has been noticed, pre-heating, metallising using low heat input electrode of size 2.5mm/3.15mm dia. for welding steel or dissimilar steels, machining and stressrelieving of DE side bearing seating area on rotor shaft are to be carried out.[stress-relieving chart has to be produced]
28Checking the bearing seating area on NDE side of rotor shaft. If any damage has been noticed, pre-heating, metallising using low heat input electrode of size 2.5mm/3.15mm dia. for welding steel or dissimilar steels, machining and stressrelieving of NDE side bearing seating area on rotor shaft are to be carried out.[stress-relieving chart has to be produced]Checking the bearing seating area on NDE side of rotor shaft. If any damage has been noticed, pre-heating, metallising using low heat input electrode of size 2.5mm/3.15mm dia. for welding steel or dissimilar steels, machining and stressrelieving of NDE side bearing seating area on rotor shaft are to be carried out.[stress-relieving chart has to be produced]
29Checking the bearing seating area on the housing of DE side endshield. If any damage has been noticed, the same has to be corrected by providing a new cast iron sleeve.Checking the bearing seating area on the housing of DE side endshield. If any damage has been noticed, the same has to be corrected by providing a new cast iron sleeve.
30Checking the bearing seating area on the housing of NDE side endshield. If any damage has been noticed, the same has to be corrected by providing a new cast iron sleeve.Checking the bearing seating area on the housing of NDE side endshield. If any damage has been noticed, the same has to be corrected by providing a new cast iron sleeve.
31Assembling, Testing & Painting Works:Providing new steel Bolts & Nuts for assembling the Motor.Assembling the Stator & Rotor into Motor with provided items for free rotation of rotor.Measuring of DCR & IR Values of Stator & Rotor,Taking trial run for observation and recording the no load current.Cleaning andPainting the assembled - finished Motor with a coat of Red oxide paint and two coats of spray painting with Grey colour paint. Motor serial no, Make,RPM, Capacity are to be written clearly on the Stator body with paint.Assembling, Testing & Painting Works:Providing new steel Bolts & Nuts for assembling the Motor.Assembling the Stator & Rotor into Motor with provided items for free rotation of rotor.Measuring of DCR & IR Values of Stator & Rotor,Taking trial run for observation and recording the no load current.Cleaning andPainting the assembled - finished Motor with a coat of Red oxide paint and two coats of spray painting with Grey colour paint. Motor serial no, Make,RPM, Capacity are to be written clearly on the Stator body with paint.
32200Kw-MI NGEF-SRIM200Kw-MI NGEF-SRIM
33ROTOR: Dismantling the motor and threading out the rotor; Removing all the failed coils of rotor completely; Cleaning of slots; Conducting hot spot test on therotor core to ensure healthiness of the core. If healthiness of rotor core is ensured, the following works are to be carried out.ROTOR: Dismantling the motor and threading out the rotor; Removing all the failed coils of rotor completely; Cleaning of slots; Conducting hot spot test on therotor core to ensure healthiness of the core. If healthiness of rotor core is ensured, the following works are to be carried out.
34Rewinding of Rotor: Complete rewinding of all the rotor bars using new electrolytic rectangular copper conductor bars with class ‘F’ insulating materials; shaping of conductors for soldering; soldering the bars with suitable clamps;banding the overhangs with Resiglass tape or non-metallic banding tape ofsuitable cross-section and tension to withstand the centrifugal forces in operation; connecting the winding to the sliprings and insulating them; Pre-heating the rotorwinding to remove moisture; Varnishing the winding with Dr. Beck’s Varnish of ‘F’class & drying; Applying a final coat of epoxy gel coat compound. [Retrieved scrap copper shall be retained by you as per the tender conditions].Rewinding of Rotor: Complete rewinding of all the rotor bars using new electrolytic rectangular copper conductor bars with class ‘F’ insulating materials; shaping of conductors for soldering; soldering the bars with suitable clamps;banding the overhangs with Resiglass tape or non-metallic banding tape ofsuitable cross-section and tension to withstand the centrifugal forces in operation; connecting the winding to the sliprings and insulating them; Pre-heating the rotorwinding to remove moisture; Varnishing the winding with Dr. Beck’s Varnish of ‘F’class & drying; Applying a final coat of epoxy gel coat compound. [Retrieved scrap copper shall be retained by you as per the tender conditions].
35Checking the trueness of rotor for any correction work on it & furnishing the readings of rotor trueness.Checking the trueness of rotor for any correction work on it & furnishing the readings of rotor trueness.
36Dynamic balancing of rotor. [Dynamic balancing certificate is to be produced.]Dynamic balancing of rotor. [Dynamic balancing certificate is to be produced.]
37MISCELLANEOUS: Providing new brush-rack assemblies with brush-holders,brushes, brush-holder fixing rods; providing cables with one side terminal studs connected to the rotor terminal box [each stud shall be of 16mm diameter fittedwith 2Nos. brass nuts & 2 Nos. brass washers]; providing of 6 Nos. bushings and 3mm thick copper link plates (3 Nos.) for shorting the rotor terminal studs of samephase; providing suitable lugs on the other side of cables for connecting the brush-rack assembly at slipring unit.MISCELLANEOUS: Providing new brush-rack assemblies with brush-holders,brushes, brush-holder fixing rods; providing cables with one side terminal studs connected to the rotor terminal box [each stud shall be of 16mm diameter fittedwith 2Nos. brass nuts & 2 Nos. brass washers]; providing of 6 Nos. bushings and 3mm thick copper link plates (3 Nos.) for shorting the rotor terminal studs of samephase; providing suitable lugs on the other side of cables for connecting the brush-rack assembly at slipring unit.
38Providing a new forged copper slipring unit of identical dimension and material composition as per the sample; Connecting the slipring unit to the rotor winding by brazing the connecting plates and lead-outs at the star-point. (Test certificatefor the material composition of both old & new slipring units from the BIS approved /NABL accredited laboratory shall be furnished.)Providing a new forged copper slipring unit of identical dimension and material composition as per the sample; Connecting the slipring unit to the rotor winding by brazing the connecting plates and lead-outs at the star-point. (Test certificatefor the material composition of both old & new slipring units from the BIS approved /NABL accredited laboratory shall be furnished.)
39Providing of new felt pack, rubber grease seals, grease lines, adopters with grease nipples with dummy and suitable clamps and new compression springs on both DE & NDE sides.Providing of new felt pack, rubber grease seals, grease lines, adopters with grease nipples with dummy and suitable clamps and new compression springs on both DE & NDE sides.
40If needed, original unavailable / damaged, Providing of a new fan, fan cover and terminal box covers made of suitable metal and materialIf needed, original unavailable / damaged, Providing of a new fan, fan cover and terminal box covers made of suitable metal and material
41Providing of new bearings of existing size in the DE side and NDE side of SKF, FAG and TIMKEN makes only. Grease used shall be of Multipurpose.[Documentary evidence is to be produced for genuineness of the bearings from the manufacturer/ from their representatives. (Inspection report for genuineness)]Providing of new bearings of existing size in the DE side and NDE side of SKF, FAG and TIMKEN makes only. Grease used shall be of Multipurpose.[Documentary evidence is to be produced for genuineness of the bearings from the manufacturer/ from their representatives. (Inspection report for genuineness)]
42To & fro transport charges including packing on both the places. Care should be taken for proper packing. These charges also include the cost of unloading the failed motor & loading the repaired motor at bidder’s works. (Loading the failedmotor at Mine-I for transporting it to the bidder’s works for repairs and unloading the repaired motor at Mine-I after transporting it from the bidder’s works will bedone by NLCIL.)To & fro transport charges including packing on both the places. Care should be taken for proper packing. These charges also include the cost of unloading the failed motor & loading the repaired motor at bidder’s works. (Loading the failedmotor at Mine-I for transporting it to the bidder’s works for repairs and unloading the repaired motor at Mine-I after transporting it from the bidder’s works will bedone by NLCIL.)
43OPTIONAL WORKS TO BE CARRIED OUT IF DAMAGE / HOT SPOT IS NOTICED: Checking the bearing seating area on DE side of rotor shaft. If anydamage has been noticed, pre-heating, metallising using low heat input electrode of size 2.5mm/3.15mm dia. for welding steel or dissimilar steels, machining and stress-relieving of DE side bearing seating area on rotor shaft are to be carried out. [stress-relieving chart has to be produced]OPTIONAL WORKS TO BE CARRIED OUT IF DAMAGE / HOT SPOT IS NOTICED: Checking the bearing seating area on DE side of rotor shaft. If anydamage has been noticed, pre-heating, metallising using low heat input electrode of size 2.5mm/3.15mm dia. for welding steel or dissimilar steels, machining and stress-relieving of DE side bearing seating area on rotor shaft are to be carried out. [stress-relieving chart has to be produced]
44Checking the bearing seating area on NDE side of rotor shaft. If any damage has been noticed, pre-heating, metallising using low heat input electrode of size 2.5mm/3.15mm dia. for welding steel or dissimilar steels, machining and stress relieving of NDE side bearing seating area on rotor shaft are to be carried out. [stress-relieving chart has to be produced]Checking the bearing seating area on NDE side of rotor shaft. If any damage has been noticed, pre-heating, metallising using low heat input electrode of size 2.5mm/3.15mm dia. for welding steel or dissimilar steels, machining and stress relieving of NDE side bearing seating area on rotor shaft are to be carried out. [stress-relieving chart has to be produced]
45Checking the bearing seating area on the housing of DE side endshield. If any damage has been noticed, the same has to be corrected by providing a new cast iron sleeve.Checking the bearing seating area on the housing of DE side endshield. If any damage has been noticed, the same has to be corrected by providing a new cast iron sleeve.
46Checking the bearing seating area on the housing of NDE side endshield. If any damage has been noticed, the same has to be corrected by providing a new cast iron sleeve.Checking the bearing seating area on the housing of NDE side endshield. If any damage has been noticed, the same has to be corrected by providing a new cast iron sleeve.
47Assembling, Testing & Painting Works:Providing new steel Bolts & Nuts for assembling the Motor. Assembling the Stator & Rotor into Motor with provided items for free rotation of rotor.Measuring of DCR & IR Values of Stator & Rotor, Taking trial run for observation and recording the no load current. Cleaning and Painting the assembled - finished Motor with a coat of Red oxide paint and two coats of spray painting with Grey colour paint. Motor serial no, Make,RPM,Capacity are to be written clearly on the Stator body with paint.Assembling, Testing & Painting Works:Providing new steel Bolts & Nuts for assembling the Motor. Assembling the Stator & Rotor into Motor with provided items for free rotation of rotor.Measuring of DCR & IR Values of Stator & Rotor, Taking trial run for observation and recording the no load current. Cleaning and Painting the assembled - finished Motor with a coat of Red oxide paint and two coats of spray painting with Grey colour paint. Motor serial no, Make,RPM,Capacity are to be written clearly on the Stator body with paint.
48240Kw-MI Siemens-SRIM240Kw-MI Siemens-SRIM
49STATOR: Dismantling the motor and threading out the rotor; Removing all the failed coils of stator completely; Cleaning of slots; Conducting hot spot test on thestator core to ensure healthiness of the core. P.S. If hot spot is noticed, item No. 4.1 shall be carried out. If healthiness of Stator core is ensured, the following works are to be carried out.STATOR: Dismantling the motor and threading out the rotor; Removing all the failed coils of stator completely; Cleaning of slots; Conducting hot spot test on thestator core to ensure healthiness of the core. P.S. If hot spot is noticed, item No. 4.1 shall be carried out. If healthiness of Stator core is ensured, the following works are to be carried out.
50Rewinding of Stator: Giving a coat of core varnish to the slots; Manufacturing and rewinding of all the stator coils using new enamelled double fibreglass coveredelectrolytic rectangular copper strips with class ‘F’ insulating materials suitable for vacuum contactor operation; Moulding the slot portion of winding withsamicatherm class ‘F insulating materials and curing the coils; taping the overhangs with class ‘F’ insulating tapes; Glassoflex or equivalent tape shall be used for sealing; placing the coils into the slots; providing glass textolite asbottom liners, interphase separators, top liners and wedges on both the edges of top of the slots; providing magnetic wedges on top of the slots except on both edges; Effecting end connections as in the original stator with suitable brazing materials and insulating with glass backed mica tapes; Binding of overhangs; providing of new lead out cables and terminating them in the terminal box; Preheatingthe stator winding to remove moisture; Varnishing the winding with Dr. Beck’s Varnish & drying; Applying a final coat of epoxy gel coat compound. [Retrieved scrap copper shall be retained by you as per the tender conditions].Rewinding of Stator: Giving a coat of core varnish to the slots; Manufacturing and rewinding of all the stator coils using new enamelled double fibreglass coveredelectrolytic rectangular copper strips with class ‘F’ insulating materials suitable for vacuum contactor operation; Moulding the slot portion of winding withsamicatherm class ‘F insulating materials and curing the coils; taping the overhangs with class ‘F’ insulating tapes; Glassoflex or equivalent tape shall be used for sealing; placing the coils into the slots; providing glass textolite asbottom liners, interphase separators, top liners and wedges on both the edges of top of the slots; providing magnetic wedges on top of the slots except on both edges; Effecting end connections as in the original stator with suitable brazing materials and insulating with glass backed mica tapes; Binding of overhangs; providing of new lead out cables and terminating them in the terminal box; Preheatingthe stator winding to remove moisture; Varnishing the winding with Dr. Beck’s Varnish & drying; Applying a final coat of epoxy gel coat compound. [Retrieved scrap copper shall be retained by you as per the tender conditions].
51ROTOR: Dismantling the motor and threading out the rotor; Removing all the failed coils of rotor completely; Cleaning of slots; Conducting hot spot test on therotor core to ensure healthiness of the core. P.S. If hot spot is noticed, item No. 3.1 shall be carried out. If healthiness of rotor core is ensured, the followingworks are to be carried out.ROTOR: Dismantling the motor and threading out the rotor; Removing all the failed coils of rotor completely; Cleaning of slots; Conducting hot spot test on therotor core to ensure healthiness of the core. P.S. If hot spot is noticed, item No. 3.1 shall be carried out. If healthiness of rotor core is ensured, the followingworks are to be carried out.
52Rewinding of Rotor: Complete rewinding of all the rotor bars using new electrolytic rectangular copper conductor bars with class ‘F’ insulating materials; shaping of conductors for soldering; soldering the bars with suitable clamps;banding the overhangs with Resiglass tape or non-metallic banding tape ofsuitable cross-section and tension to withstand the centrifugal forces in operation; connecting the winding to the sliprings and insulating them; Pre-heating the rotorwinding to remove moisture; Varnishing the winding with Dr. Beck’s Varnish of ‘F’ class & drying; Applying a final coat of epoxy gel coat compound. [Retrievedscrap copper shall be retained by you as per the tender conditions].Rewinding of Rotor: Complete rewinding of all the rotor bars using new electrolytic rectangular copper conductor bars with class ‘F’ insulating materials; shaping of conductors for soldering; soldering the bars with suitable clamps;banding the overhangs with Resiglass tape or non-metallic banding tape ofsuitable cross-section and tension to withstand the centrifugal forces in operation; connecting the winding to the sliprings and insulating them; Pre-heating the rotorwinding to remove moisture; Varnishing the winding with Dr. Beck’s Varnish of ‘F’ class & drying; Applying a final coat of epoxy gel coat compound. [Retrievedscrap copper shall be retained by you as per the tender conditions].
53Checking the trueness of rotor for any correction work on it & furnishing the readings of rotor trueness.Checking the trueness of rotor for any correction work on it & furnishing the readings of rotor trueness.
54Dynamic balancing of rotor. [Dynamic balancing certificate is to be produced.]Dynamic balancing of rotor. [Dynamic balancing certificate is to be produced.]
55MISCELLANEOUS:Providing new brush-rack assemblies with brush-holders,brushes, brush-holder fixing rods; providing cables with one side terminal studs connected to the rotor terminal box [each stud shall be of 16mm diameter fittedwith 2Nos. brass nuts & 2 Nos. brass washers]; providing of 6 Nos. bushings and 3mm thick copper link plates (3 Nos.) for shorting the rotor terminal studs of samephase; providing suitable lugs on the other side of cables for connecting the brush-rack assembly at slipring unit.MISCELLANEOUS:Providing new brush-rack assemblies with brush-holders,brushes, brush-holder fixing rods; providing cables with one side terminal studs connected to the rotor terminal box [each stud shall be of 16mm diameter fittedwith 2Nos. brass nuts & 2 Nos. brass washers]; providing of 6 Nos. bushings and 3mm thick copper link plates (3 Nos.) for shorting the rotor terminal studs of samephase; providing suitable lugs on the other side of cables for connecting the brush-rack assembly at slipring unit.
56Providing a new forged copper slipring unit of identical dimension and material composition as per the sample; Connecting the slipring unit to the rotor winding by brazing the connecting plates and lead-outs at the star-point. (Test certificatefor the material composition of both old & new slipring units from the BIS approved /NABL accredited laboratory shall be furnished.)Providing a new forged copper slipring unit of identical dimension and material composition as per the sample; Connecting the slipring unit to the rotor winding by brazing the connecting plates and lead-outs at the star-point. (Test certificatefor the material composition of both old & new slipring units from the BIS approved /NABL accredited laboratory shall be furnished.)
57Providing of new bearings of existing size in the DE side and NDE side of SKF, FAG and TIMKEN makes only. Grease used shall be of Multipurpose. [Documentary evidence is to be produced for genuineness of the bearings from the manufacturer/ from their representatives. (Inspection report for genuineness)]Providing of new bearings of existing size in the DE side and NDE side of SKF, FAG and TIMKEN makes only. Grease used shall be of Multipurpose. [Documentary evidence is to be produced for genuineness of the bearings from the manufacturer/ from their representatives. (Inspection report for genuineness)]
58Providing of new felt pack, rubber grease seals, grease lines, adopters with grease nipples with dummy and suitable clamps and new compression springs on both DE & NDE sides.Providing of new felt pack, rubber grease seals, grease lines, adopters with grease nipples with dummy and suitable clamps and new compression springs on both DE & NDE sides.
59If needed, original unavailable / damaged, Providing of a new fan, fan cover and terminal box covers made of suitable metal and materialIf needed, original unavailable / damaged, Providing of a new fan, fan cover and terminal box covers made of suitable metal and material
60To & fro transport charges including packing on both the places. Care should be taken for proper packing. These charges also include the cost of unloading the failed motor & loading the repaired motor at bidder’s works. (Loading the failedmotor at Mine-I for transporting it to the bidder’s works for repairs and unloading the repaired motor at Mine-I after transporting it from the bidder’s works will bedone by NLCIL.)To & fro transport charges including packing on both the places. Care should be taken for proper packing. These charges also include the cost of unloading the failed motor & loading the repaired motor at bidder’s works. (Loading the failedmotor at Mine-I for transporting it to the bidder’s works for repairs and unloading the repaired motor at Mine-I after transporting it from the bidder’s works will bedone by NLCIL.)
61OPTIONAL WORKS TO BE CARRIED OUT IF DAMAGE / HOT SPOT IS NOTICED: Re-stacking of stator core: Removing the stator core pack from theshell; Removing all the stator core lamination, thorough cleaning of laminations and reinsulating them with uniform coating of core varnish; staggering & restacking all the core laminations; correcting the slot portion;conducting the hotspot test.OPTIONAL WORKS TO BE CARRIED OUT IF DAMAGE / HOT SPOT IS NOTICED: Re-stacking of stator core: Removing the stator core pack from theshell; Removing all the stator core lamination, thorough cleaning of laminations and reinsulating them with uniform coating of core varnish; staggering & restacking all the core laminations; correcting the slot portion;conducting the hotspot test.
62Re-stacking of rotor core: Stripping all the bars of failed rotor ; Cleaning of slots; conducting hot spot test; Removing all the rotor core laminations, thorough cleaning of laminations and re-insulating them with uniform coating of core varnish; Staggering & re-stacking all the core laminations; correcting the slotportion; conducting hot spot test.Re-stacking of rotor core: Stripping all the bars of failed rotor ; Cleaning of slots; conducting hot spot test; Removing all the rotor core laminations, thorough cleaning of laminations and re-insulating them with uniform coating of core varnish; Staggering & re-stacking all the core laminations; correcting the slotportion; conducting hot spot test.
63Checking the bearing seating area on DE side of rotor shaft. If any damage has been noticed, pre-heating, metallising using low heat input electrode of size2.5mm/3.15mm dia. for welding steel or dissimilar steels, machining and stressrelieving of DE side bearing seating area on rotor shaft are to be carried out. [stress-relieving chart has to be produced]Checking the bearing seating area on DE side of rotor shaft. If any damage has been noticed, pre-heating, metallising using low heat input electrode of size2.5mm/3.15mm dia. for welding steel or dissimilar steels, machining and stressrelieving of DE side bearing seating area on rotor shaft are to be carried out. [stress-relieving chart has to be produced]
64Checking the bearing seating area on NDE side of rotor shaft. If any damage has been noticed, pre-heating, metallising using low heat input electrode of size 2.5mm/3.15mm dia. for welding steel or dissimilar steels, machining and stress relieving of NDE side bearing seating area on rotor shaft are to be carried out. [stress-relieving chart has to be produced]Checking the bearing seating area on NDE side of rotor shaft. If any damage has been noticed, pre-heating, metallising using low heat input electrode of size 2.5mm/3.15mm dia. for welding steel or dissimilar steels, machining and stress relieving of NDE side bearing seating area on rotor shaft are to be carried out. [stress-relieving chart has to be produced]
65Checking the bearing seating area on the housing of DE side endshield. If any damage has been noticed, the same has to be corrected by providing a new cast iron sleeve.Checking the bearing seating area on the housing of DE side endshield. If any damage has been noticed, the same has to be corrected by providing a new cast iron sleeve.
66Checking the bearing seating area on the housing of NDE side endshield. If any damage has been noticed, the same has to be corrected by providing a new cast iron sleeve.Checking the bearing seating area on the housing of NDE side endshield. If any damage has been noticed, the same has to be corrected by providing a new cast iron sleeve.
67Assembling, Testing & Painting Works:Providing new steel Bolts & Nuts for assembling the Motor. Assembling the Stator & Rotor into Motor with provided items for free rotation of rotor.Measuring of DCR & IR Values of Stator & Rotor, Taking trial run for observation and recording the no load current.Cleaning and Painting the assembled - finished Motor with a coat of Red oxide paint and two coats of spray painting with Grey colour paint. Motor serial no, Make,RPM, Capacity are to be written clearly on the Stator body with paint.Assembling, Testing & Painting Works:Providing new steel Bolts & Nuts for assembling the Motor. Assembling the Stator & Rotor into Motor with provided items for free rotation of rotor.Measuring of DCR & IR Values of Stator & Rotor, Taking trial run for observation and recording the no load current.Cleaning and Painting the assembled - finished Motor with a coat of Red oxide paint and two coats of spray painting with Grey colour paint. Motor serial no, Make,RPM, Capacity are to be written clearly on the Stator body with paint.

AI Tender Summary

OUR REF NO 56464149
AUTHORITY Government Departments
TENDER VALUE Ref. Documents
LAST DATE 04-08-2026
Authority
Authority Name Department Of Materials Management
Work Description Bids Are invited for Custom Bid For Services - Rewinding Of Lt Motors - 147Kw-Mi Ngef-Scim , Stator: Dismantling The Motor And Threading Out The Rotor; Removing All The Failed Coils Of Stator Completely; Cleaning Of Slots; Conducting Hot Spot Test On Thestator Core To Ensure Healthiness Of The Core. If Healthiness Of Stator Core Is Ensured, The Following Works Are To Be Carried Out. , Rewinding Of Stator: Giving A Coat Of Core Varnish To The Slots; Manufacturing And Rewinding Of All The Stator Coils Using New Enamelled Double Fibreglass Covered Electrolytic Rectangular Copper Strips With Class ‘F Insulating Materials Suitable For Vacuum Contactor Operation; Moulding The Slot Portion Of Winding Withsamicatherm Class ‘F Insulating Materials And Curing The Coils; Taping The Overhangs With Class ‘F Insulating Tapes; Glassoflex Or Equivalent Tape Shall Be Used For Sealing; Placing The Coils Into The Slots; Providing Glass Textolite Asbottom Liners, Interphase Separators, Top Liners And Wedges On Both The Edges Of Top Of The Slots; Providing Magnetic Wedges On Top Of The Slots Except On Both Edges; Effecting End Connections As In The Original Stator With Suitable Brazing Materials And Insulating With Glass Backed Mica Tapes; Binding Of Overhangs; Providing Of New Lead Out Cables And Terminating Them In The Terminal Box; Preheatingthe Stator Winding To Remove Moisture; Varnishing The Winding With Dr. Becks Varnish & Drying; Applying A Final Coat Of Epoxy Gel Coat Compound. [Retrieved Scrap Copper Shall Be Retained By You As Per The Tender Conditions]. , Refurbishing Stator: Giving A Coat Of Core Varnish ,Moulding The Slot Portion Of Winding With Samicatherm Class ‘F Insulating Materials And Curing The Coils; Taping The Overhangs With Class ‘F Insulating Tapes.Effecting End Connections Asin The Original Stator With Suitable Brazing Materials And Insulating With Glass Backed Mica Tapes; Binding Of Overhangs; Providing Of New Lead Out Cables And Terminating Them In The Terminal Box; Pre-Heating The Stator Winding To Remove Moisture; Varnishing The Winding With Dr. Becks Varnish & Drying; Applying A Final Coat Of Epoxy Gel Coat Compound. [Retrieved Scrap Copper[Old Lead Out Cables] Shall Be Retained By You As Per The Tender Conditions]. , Fabrication & Fixing Of Pedestal Similar To The Original Dimension & Motor On Both Sides As Directed By Site Incharge. , Rotor:Rotor Shaft Replacement :Replacing The Existing Cut / Bend Rotor Shaft By A New Shaft Having Dimensions And Material Composition Similar To Old Shaft. Material Composition Test For Both Old And New Shaft Shall Be Submitted Forapproval.(Test Certificate For The Material Composition Of Both Old & New Shaft From The Bis Approved /Nabl Accredited Laboratory Shall Be Furnished.) , Checking The Trueness Of Rotor For Any Correction Work On It & Furnishing The Readings Of Rotor Trueness. , Dynamic Balancing Of Rotor. [Dynamic Balancing Certificate Is To Be Produced.] , Miscellaneous: Providing Of New Bearings Of Existing Size In The De Side And Nde Side Of Skf, Fag And Timken Makes Only. Grease Used Shall Be Of Multipurpose. [Documentary Evidence Is To Be Produced For Genuineness Of The Bearings From The Manufacturer/ From Their Representatives. (Inspection Report For Genuineness)] , Providing Of New Felt Pack, Rubber Grease Seals, Grease Lines, Adopters With Grease Nipples With Dummy And Suitable Cl S And New Compression Springs On Both De & Nde Sides. , To & Fro Transport Charges Including Packing On Both The Places. Care Should Be Taken For Proper Packing. These Charges Also Include The Cost Of Unloading The Failed Motor & Loading The Repaired Motor At Bidders Works. (Loading The Failedmotor At Mine-I For Transporting It To The Bidders Works For Repairs And Unloading The Repaired Motor At Mine-I After Transporting It From The Bidders Works Will Bedone By Nlcil.) , Optional Works To Be Carried Out If Damage / Hot Spot Is Noticed: Checking The Bearing Seating Area On The Housing Of De Side Endshield. If Any Damage Has Been Noticed, The Same Has To Be Corrected Byproviding A New Cast Iron Sleeve. , Checking The Bearing Seating Area On The Housing Of Nde Side Endshield. If Any Damage Has Been Noticed, The Same Has To Be Corrected By Providing A New Cast Iron Sleeve. , Assembling, Testing & Painting Works:Providing New Steel Bolts & Nuts For Assembling The Motor.Assembling The Stator & Rotor Into Motor With Provided Items For Free Rotation Of Rotor.Measuring Of Dcr & Ir Values Of Stator & Rotor,Taking Trial Run For Observation And Recording The No Load Current.Cleaning Andpainting The Assembled - Finished Motor With A Coat Of Red Oxide Paint And Two Coats Of Spray Painting With Grey Colour Paint. Motor Serial No, Make,Rpm, Capacity Are To Be Written Clearly On The Stator Body With Paint. , 147Kw-Mi Siemens-Scim , Stator: Dismantling The Motor And Threading Out The Rotor; Removing All The Failed Coils Of Stator Completely; Cleaning Of Slots; Conducting Hot Spot Test On Thestator Core To Ensure Healthiness Of The Core. P.S. If Hot Spot Is Noticed, Item No. 4.1 Shall Be Carried Out. If Healthiness Of Stator Core Is Ensured, The Following Works Are To Be Carried Out. , Rewinding Of Stator: Giving A Coat Of Core Varnish To The Slots; Manufacturing And Rewinding Of All The Stator Coils Using New Enamelled Double Fibreglass Coveredelectrolytic Rectangular Copper Strips With Class ‘F Insulating Materials Suitable For Vacuum Contactor Operation; Moulding The Slot Portion Of Winding Withsamicatherm Class ‘F Insulating Materials And Curing The Coils; Taping The Overhangs With Class ‘F Insulating Tapes; Glassoflex Or Equivalent Tape Shall Be Used For Sealing; Placing The Coils Into The Slots; Providing Glass Textolite Asbottom Liners, Interphase Separators, Top Liners And Wedges On Both The Edges Of Top Of The Slots; Providing Magnetic Wedges On Top Of The Slots Except On Both Edges; Effecting End Connections As In The Original Stator With Suitable Brazing Materials And Insulating With Glass Backed Mica Tapes; Binding Of Overhangs; Providing Of New Lead Out Cables And Terminating Them In The Terminal Box; Preheatingthe Stator Winding To Remove Moisture; Varnishing The Winding With Dr. Becks Varnish & Drying; Applying A Final Coat Of Epoxy Gel Coat Compound. [Retrieved Scrap Copper Shall Be Retained By You As Per The Tender Conditions]. , Rotor: Dismantling The Motor And Threading Out The Rotor; Removing All Rotor Bars Of The Rotor Completely; Cleaning Of Slots; Conducting Hot Spot Test On Therotor Core To Ensure Healthiness Of The Core. P.S. If Hot Spot Is Noticed, Item No. 4.2 Shall Be Carried Out. If Healthiness Of Rotor Core Is Ensured, The Followingworks Are To Be Carried Out. , Rewinding Of Rotor - Cage Rotor: Complete Rewinding Of All The Rotor Bars Using New Electrolytic Rectangular Copper Conductor Bars With Class ‘F Insulatingmaterials; Shaping Of Conductors For Soldering; Soldering The Bars With Suitable Rings. Pre-Heating The Rotor Bars To Remove Moisture; Varnishing The Cage Rotorwith Dr. Becks Varnish Of ‘F Class & Drying; Applying A Final Coat Of Epoxy Gel Coat Compound. [Retrieved Scrap Copper Shall Be Retained By You As Per The Tender Conditions]. , Checking The Trueness Of Rotor For Any Correction Work On It & Furnishing The Readings Of Rotor Trueness. , Dynamic Balancing Of Rotor. [Dynamic Balancing Certificate Is To Be Produced.] , Miscellaneous: Providing Of New Bearings Of Existing Size In The De Side And Nde Side Of Skf, Fag And Timken Makes Only. Grease Used Shall Be Of Multipurpose. [Documentary Evidence Is To Be Produced For Genuineness Of The Bearings From The Manufacturer/ From Their Representatives. (Inspection Report For Genuineness)] , Providing Of New Felt Pack, Rubber Grease Seals, Grease Lines, Adopters With Grease Nipples With Dummy And Suitable Cl S And New Compression Springs On Both De & Nde Sides. , To & Fro Transport Charges Including Packing On Both The Places. Care Should Be Taken For Proper Packing. These Charges Also Include The Cost Of Unloading The Failed Motor & Loading The Repaired Motor At Bidders Works. (Loading The Failedmotor At Mine-I For Transporting It To The Bidders Works For Repairs And Unloading The Repaired Motor At Mine-I After Transporting It From The Bidders Works Will Be Done By Nlcil.) , Optional Works To Be Carried Out If Damage / Hot Spot Is Noticed: Re-Stacking Of Stator Core: Removing The Stator Core Pack From Theshell; Removing All The Stator Core Lamination, Thorough Cleaning Of Laminations And Reinsulating Them With Uniform Coating Of Core Varnish; Staggering & Restacking All The Core Laminations; Correcting The Slot Portion;Conducting The Hotspot Test. , Re-Stacking Of Rotor Core: Stripping All The Bars Of Failed Rotor ; Cleaning Of Slots; Conducting Hot Spot Test; Removing All The Rotor Core Laminations, Thoroughcleaning Of Laminations And Re-Insulating Them With Uniform Coating Of Core Varnish; Staggering & Re-Stacking All The Core Laminations; Correcting The Slot Portion; Conducting Hot Spot Test. , Checking The Bearing Seating Area On De Side Of Rotor Shaft. If Any Damage Has Been Noticed, Pre-Heating, Metallising Using Low Heat Input Electrode Of Size 2.5Mm/3.15Mm Dia. For Welding Steel Or Dissimilar Steels, Machining And Stressrelieving Of De Side Bearing Seating Area On Rotor Shaft Are To Be Carried Out.[Stress-Relieving Chart Has To Be Produced] , Checking The Bearing Seating Area On Nde Side Of Rotor Shaft. If Any Damage Has Been Noticed, Pre-Heating, Metallising Using Low Heat Input Electrode Of Size 2.5Mm/3.15Mm Dia. For Welding Steel Or Dissimilar Steels, Machining And Stressrelieving Of Nde Side Bearing Seating Area On Rotor Shaft Are To Be Carried Out.[Stress-Relieving Chart Has To Be Produced] , Checking The Bearing Seating Area On The Housing Of De Side Endshield. If Any Damage Has Been Noticed, The Same Has To Be Corrected By Providing A New Cast Iron Sleeve. , Checking The Bearing Seating Area On The Housing Of Nde Side Endshield. If Any Damage Has Been Noticed, The Same Has To Be Corrected By Providing A New Cast Iron Sleeve. , Assembling, Testing & Painting Works:Providing New Steel Bolts & Nuts For Assembling The Motor.Assembling The Stator & Rotor Into Motor With Provided Items For Free Rotation Of Rotor.Measuring Of Dcr & Ir Values Of Stator & Rotor,Taking Trial Run For Observation And Recording The No Load Current.Cleaning Andpainting The Assembled - Finished Motor With A Coat Of Red Oxide Paint And Two Coats Of Spray Painting With Grey Colour Paint. Motor Serial No, Make,Rpm, Capacity Are To Be Written Clearly On The Stator Body With Paint. , 200Kw-Mi Ngef-Srim , Rotor: Dismantling The Motor And Threading Out The Rotor; Removing All The Failed Coils Of Rotor Completely; Cleaning Of Slots; Conducting Hot Spot Test On Therotor Core To Ensure Healthiness Of The Core. If Healthiness Of Rotor Core Is Ensured, The Following Works Are To Be Carried Out. , Rewinding Of Rotor: Complete Rewinding Of All The Rotor Bars Using New Electrolytic Rectangular Copper Conductor Bars With Class ‘F Insulating Materials; Shaping Of Conductors For Soldering; Soldering The Bars With Suitable Cl S;Banding The Overhangs With Resiglass Tape Or Non-Metallic Banding Tape Ofsuitable Cross-Section And Tension To Withstand The Centrifugal Forces In Operation; Connecting The Winding To The Sliprings And Insulating Them; Pre-Heating The Rotorwinding To Remove Moisture; Varnishing The Winding With Dr. Becks Varnish Of ‘Fclass & Drying; Applying A Final Coat Of Epoxy Gel Coat Compound. [Retrieved Scrap Copper Shall Be Retained By You As Per The Tender Conditions]. , Checking The Trueness Of Rotor For Any Correction Work On It & Furnishing The Readings Of Rotor Trueness. , Dynamic Balancing Of Rotor. [Dynamic Balancing Certificate Is To Be Produced.] , Miscellaneous: Providing New Brush-Rack Assemblies With Brush-Holders,Brushes, Brush-Holder Fixing Rods; Providing Cables With One Side Terminal Studs Connected To The Rotor Terminal Box [Each Stud Shall Be Of 16Mm Diameter Fittedwith 2Nos. Brass Nuts & 2 Nos. Brass Washers]; Providing Of 6 Nos. Bushings And 3Mm Thick Copper Link Plates (3 Nos.) For Shorting The Rotor Terminal Studs Of Samephase; Providing Suitable Lugs On The Other Side Of Cables For Connecting The Brush-Rack Assembly At Slipring Unit. , Providing A New Forged Copper Slipring Unit Of Identical Dimension And Material Composition As Per The S Le; Connecting The Slipring Unit To The Rotor Winding By Brazing The Connecting Plates And Lead-Outs At The Star-Point. (Test Certificatefor The Material Composition Of Both Old & New Slipring Units From The Bis Approved /Nabl Accredited Laboratory Shall Be Furnished.) , Providing Of New Felt Pack, Rubber Grease Seals, Grease Lines, Adopters With Grease Nipples With Dummy And Suitable Cl S And New Compression Springs On Both De & Nde Sides. , If Needed, Original Unavailable / Damaged, Providing Of A New Fan, Fan Cover And Terminal Box Covers Made Of Suitable Metal And Material , Providing Of New Bearings Of Existing Size In The De Side And Nde Side Of Skf, Fag And Timken Makes Only. Grease Used Shall Be Of Multipurpose.[Documentary Evidence Is To Be Produced For Genuineness Of The Bearings From The Manufacturer/ From Their Representatives. (Inspection Report For Genuineness)] , To & Fro Transport Charges Including Packing On Both The Places. Care Should Be Taken For Proper Packing. These Charges Also Include The Cost Of Unloading The Failed Motor & Loading The Repaired Motor At Bidders Works. (Loading The Failedmotor At Mine-I For Transporting It To The Bidders Works For Repairs And Unloading The Repaired Motor At Mine-I After Transporting It From The Bidders Works Will Bedone By Nlcil.) , Optional Works To Be Carried Out If Damage / Hot Spot Is Noticed: Checking The Bearing Seating Area On De Side Of Rotor Shaft. If Anydamage Has Been Noticed, Pre-Heating, Metallising Using Low Heat Input Electrode Of Size 2.5Mm/3.15Mm Dia. For Welding Steel Or Dissimilar Steels, Machining And Stress-Relieving Of De Side Bearing Seating Area On Rotor Shaft Are To Be Carried Out. [Stress-Relieving Chart Has To Be Produced] , Checking The Bearing Seating Area On Nde Side Of Rotor Shaft. If Any Damage Has Been Noticed, Pre-Heating, Metallising Using Low Heat Input Electrode Of Size 2.5Mm/3.15Mm Dia. For Welding Steel Or Dissimilar Steels, Machining And Stress Relieving Of Nde Side Bearing Seating Area On Rotor Shaft Are To Be Carried Out. [Stress-Relieving Chart Has To Be Produced] , Checking The Bearing Seating Area On The Housing Of De Side Endshield. If Any Damage Has Been Noticed, The Same Has To Be Corrected By Providing A New Cast Iron Sleeve. , Checking The Bearing Seating Area On The Housing Of Nde Side Endshield. If Any Damage Has Been Noticed, The Same Has To Be Corrected By Providing A New Cast Iron Sleeve. , Assembling, Testing & Painting Works:Providing New Steel Bolts & Nuts For Assembling The Motor. Assembling The Stator & Rotor Into Motor With Provided Items For Free Rotation Of Rotor.Measuring Of Dcr & Ir Values Of Stator & Rotor, Taking Trial Run For Observation And Recording The No Load Current. Cleaning And Painting The Assembled - Finished Motor With A Coat Of Red Oxide Paint And Two Coats Of Spray Painting With Grey Colour Paint. Motor Serial No, Make,Rpm,Capacity Are To Be Written Clearly On The Stator Body With Paint. , 240Kw-Mi Siemens-Srim , Stator: Dismantling The Motor And Threading Out The Rotor; Removing All The Failed Coils Of Stator Completely; Cleaning Of Slots; Conducting Hot Spot Test On Thestator Core To Ensure Healthiness Of The Core. P.S. If Hot Spot Is Noticed, Item No. 4.1 Shall Be Carried Out. If Healthiness Of Stator Core Is Ensured, The Following Works Are To Be Carried Out. , Rewinding Of Stator: Giving A Coat Of Core Varnish To The Slots; Manufacturing And Rewinding Of All The Stator Coils Using New Enamelled Double Fibreglass Coveredelectrolytic Rectangular Copper Strips With Class ‘F Insulating Materials Suitable For Vacuum Contactor Operation; Moulding The Slot Portion Of Winding Withsamicatherm Class ‘F Insulating Materials And Curing The Coils; Taping The Overhangs With Class ‘F Insulating Tapes; Glassoflex Or Equivalent Tape Shall Be Used For Sealing; Placing The Coils Into The Slots; Providing Glass Textolite Asbottom Liners, Interphase Separators, Top Liners And Wedges On Both The Edges Of Top Of The Slots; Providing Magnetic Wedges On Top Of The Slots Except On Both Edges; Effecting End Connections As In The Original Stator With Suitable Brazing Materials And Insulating With Glass Backed Mica Tapes; Binding Of Overhangs; Providing Of New Lead Out Cables And Terminating Them In The Terminal Box; Preheatingthe Stator Winding To Remove Moisture; Varnishing The Winding With Dr. Becks Varnish & Drying; Applying A Final Coat Of Epoxy Gel Coat Compound. [Retrieved Scrap Copper Shall Be Retained By You As Per The Tender Conditions]. , Rotor: Dismantling The Motor And Threading Out The Rotor; Removing All The Failed Coils Of Rotor Completely; Cleaning Of Slots; Conducting Hot Spot Test On Therotor Core To Ensure Healthiness Of The Core. P.S. If Hot Spot Is Noticed, Item No. 3.1 Shall Be Carried Out. If Healthiness Of Rotor Core Is Ensured, The Followingworks Are To Be Carried Out. , Rewinding Of Rotor: Complete Rewinding Of All The Rotor Bars Using New Electrolytic Rectangular Copper Conductor Bars With Class ‘F Insulating Materials; Shaping Of Conductors For Soldering; Soldering The Bars With Suitable Cl S;Banding The Overhangs With Resiglass Tape Or Non-Metallic Banding Tape Ofsuitable Cross-Section And Tension To Withstand The Centrifugal Forces In Operation; Connecting The Winding To The Sliprings And Insulating Them; Pre-Heating The Rotorwinding To Remove Moisture; Varnishing The Winding With Dr. Becks Varnish Of ‘F Class & Drying; Applying A Final Coat Of Epoxy Gel Coat Compound. [Retrievedscrap Copper Shall Be Retained By You As Per The Tender Conditions]. , Checking The Trueness Of Rotor For Any Correction Work On It & Furnishing The Readings Of Rotor Trueness. , Dynamic Balancing Of Rotor. [Dynamic Balancing Certificate Is To Be Produced.] , Miscellaneous:Providing New Brush-Rack Assemblies With Brush-Holders,Brushes, Brush-Holder Fixing Rods; Providing Cables With One Side Terminal Studs Connected To The Rotor Terminal Box [Each Stud Shall Be Of 16Mm Diameter Fittedwith 2Nos. Brass Nuts & 2 Nos. Brass Washers]; Providing Of 6 Nos. Bushings And 3Mm Thick Copper Link Plates (3 Nos.) For Shorting The Rotor Terminal Studs Of Samephase; Providing Suitable Lugs On The Other Side Of Cables For Connecting The Brush-Rack Assembly At Slipring Unit. , Providing A New Forged Copper Slipring Unit Of Identical Dimension And Material Composition As Per The S Le; Connecting The Slipring Unit To The Rotor Winding By Brazing The Connecting Plates And Lead-Outs At The Star-Point. (Test Certificatefor The Material Composition Of Both Old & New Slipring Units From The Bis Approved /Nabl Accredited Laboratory Shall Be Furnished.) , Providing Of New Bearings Of Existing Size In The De Side And Nde Side Of Skf, Fag And Timken Makes Only. Grease Used Shall Be Of Multipurpose. [Documentary Evidence Is To Be Produced For Genuineness Of The Bearings From The Manufacturer/ From Their Representatives. (Inspection Report For Genuineness)] , Providing Of New Felt Pack, Rubber Grease Seals, Grease Lines, Adopters With Grease Nipples With Dummy And Suitable Cl S And New Compression Springs On Both De & Nde Sides. , If Needed, Original Unavailable / Damaged, Providing Of A New Fan, Fan Cover And Terminal Box Covers Made Of Suitable Metal And Material , To & Fro Transport Charges Including Packing On Both The Places. Care Should Be Taken For Proper Packing. These Charges Also Include The Cost Of Unloading The Failed Motor & Loading The Repaired Motor At Bidders Works. (Loading The Failedmotor At Mine-I For Transporting It To The Bidders Works For Repairs And Unloading The Repaired Motor At Mine-I After Transporting It From The Bidders Works Will Bedone By Nlcil.) , Optional Works To Be Carried Out If Damage / Hot Spot Is Noticed: Re-Stacking Of Stator Core: Removing The Stator Core Pack From Theshell; Removing All The Stator Core Lamination, Thorough Cleaning Of Laminations And Reinsulating Them With Uniform Coating Of Core Varnish; Staggering & Restacking All The Core Laminations; Correcting The Slot Portion;Conducting The Hotspot Test. , Re-Stacking Of Rotor Core: Stripping All The Bars Of Failed Rotor ; Cleaning Of Slots; Conducting Hot Spot Test; Removing All The Rotor Core Laminations, Thorough Cleaning Of Laminations And Re-Insulating Them With Uniform Coating Of Core Varnish; Staggering & Re-Stacking All The Core Laminations; Correcting The Slotportion; Conducting Hot Spot Test. , Checking The Bearing Seating Area On De Side Of Rotor Shaft. If Any Damage Has Been Noticed, Pre-Heating, Metallising Using Low Heat Input Electrode Of Size2.5Mm/3.15Mm Dia. For Welding Steel Or Dissimilar Steels, Machining And Stressrelieving Of De Side Bearing Seating Area On Rotor Shaft Are To Be Carried Out. [Stress-Relieving Chart Has To Be Produced] , Checking The Bearing Seating Area On Nde Side Of Rotor Shaft. If Any Damage Has Been Noticed, Pre-Heating, Metallising Using Low Heat Input Electrode Of Size 2.5Mm/3.15Mm Dia. For Welding Steel Or Dissimilar Steels, Machining And Stress Relieving Of Nde Side Bearing Seating Area On Rotor Shaft Are To Be Carried Out. [Stress-Relieving Chart Has To Be Produced] , Checking The Bearing Seating Area On The Housing Of De Side Endshield. If Any Damage Has Been Noticed, The Same Has To Be Corrected By Providing A New Cast Iron Sleeve. , Checking The Bearing Seating Area On The Housing Of Nde Side Endshield. If Any Damage Has Been Noticed, The Same Has To Be Corrected By Providing A New Cast Iron Sleeve. , Assembling, Testing & Painting Works:Providing New Steel Bolts & Nuts For Assembling The Motor. Assembling The Stator & Rotor Into Motor With Provided Items For Free Rotation Of Rotor.Measuring Of Dcr & Ir Values Of Stator & Rotor, Taking Trial Run For Observation And Recording The No Load Current.Cleaning And Painting The Assembled - Finished Motor With A Coat Of Red Oxide Paint And Two Coats Of Spray Painting With Grey Colour Paint. Motor Serial No, Make,Rpm, Capacity Are To Be Written Clearly On The Stator Body With Paint.
Basic Detail
Tender No GEM/2026/B/7757976
Bidding Type Tender
Location
City Cuddalore
State Tamil Nadu
Key Dates
Publish Date 14 Jul 2026
Submission Date 04 Aug 2026
Open Date 04 Aug 2026
Finance
Tender Value Ref. Documents
Tender Fee Ref. Documents
EMD 3.58 Lakhs
Exemption Not Available
Document List
eda114a8-4c62-47cf-9e0e-39e764403f93.pdf
1784010955.pdf
1784010962.pdf
1784010971.pdf
1784010990.pdf
1784029845.xlsx

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Tender Timeline

Jul 14, 2026
11:30 IST

Tender Published

Tender notice published.

Completed
Aug 04, 2026
17:00 IST

Bid Submission Deadline

Online submission via eProcurement portal.

Upcoming · 14 days
Aug 04, 2026

Bid Opening Date

Technical bids will be opened and evaluated.

Upcoming · 14 days

Tender Documents

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eda114a8-4c62-47cf-9e0e-39e764403f93.pdf

pdf

1784010955.pdf

pdf

1784010962.pdf

pdf

1784010971.pdf

pdf

1784010990.pdf

xlsx

1784029845.xlsx

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