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
Tender Overview
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 Title | Item Description |
| 1 | 147Kw-MI NGEF-SCIM | 147Kw-MI NGEF-SCIM |
| 2 | 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. | 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. |
| 3 | 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]. | 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]. |
| 4 | 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]. | 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]. |
| 5 | Fabrication & 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. |
| 6 | 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.) | 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.) |
| 7 | Checking 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. |
| 8 | Dynamic balancing of rotor. [Dynamic balancing certificate is to be produced.] | Dynamic balancing of rotor. [Dynamic balancing certificate is to be produced.] |
| 9 | 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)] | 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)] |
| 10 | 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. | 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. |
| 11 | 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.) | 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.) |
| 12 | 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. | 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. |
| 13 | 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. | 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. |
| 14 | 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. | 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. |
| 15 | 147Kw-MI Siemens-SCIM | 147Kw-MI Siemens-SCIM |
| 16 | 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. | 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. |
| 17 | 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]. | 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]. |
| 18 | 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. | 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. |
| 19 | 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]. | 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]. |
| 20 | Checking 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. |
| 21 | Dynamic balancing of rotor. [Dynamic balancing certificate is to be produced.] | Dynamic balancing of rotor. [Dynamic balancing certificate is to be produced.] |
| 22 | 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)] | 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)] |
| 23 | 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. | 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. |
| 24 | 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.) | 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.) |
| 25 | 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. | 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. |
| 26 | 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. | 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. |
| 27 | 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 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] |
| 28 | 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 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] |
| 29 | 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 DE side endshield. If any damage has been noticed, the same has to be corrected by providing a new cast iron sleeve. |
| 30 | 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. | 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. |
| 31 | 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. | 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. |
| 32 | 200Kw-MI NGEF-SRIM | 200Kw-MI NGEF-SRIM |
| 33 | 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. | 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. |
| 34 | 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]. | 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]. |
| 35 | Checking 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. |
| 36 | Dynamic balancing of rotor. [Dynamic balancing certificate is to be produced.] | Dynamic balancing of rotor. [Dynamic balancing certificate is to be produced.] |
| 37 | 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. | 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. |
| 38 | 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.) | 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.) |
| 39 | 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. | 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. |
| 40 | If needed, original unavailable / damaged, Providing of a new fan, fan cover and terminal box covers made of suitable metal and material | If needed, original unavailable / damaged, Providing of a new fan, fan cover and terminal box covers made of suitable metal and material |
| 41 | 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 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)] |
| 42 | 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.) | 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.) |
| 43 | 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] | 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] |
| 44 | 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 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] |
| 45 | 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 DE side endshield. If any damage has been noticed, the same has to be corrected by providing a new cast iron sleeve. |
| 46 | 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. | 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. |
| 47 | 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. | 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. |
| 48 | 240Kw-MI Siemens-SRIM | 240Kw-MI Siemens-SRIM |
| 49 | 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. | 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. |
| 50 | 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]. | 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]. |
| 51 | 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. | 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. |
| 52 | 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]. | 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]. |
| 53 | Checking 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. |
| 54 | Dynamic balancing of rotor. [Dynamic balancing certificate is to be produced.] | Dynamic balancing of rotor. [Dynamic balancing certificate is to be produced.] |
| 55 | 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. | 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. |
| 56 | 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.) | 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.) |
| 57 | 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 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)] |
| 58 | 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. | 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. |
| 59 | If needed, original unavailable / damaged, Providing of a new fan, fan cover and terminal box covers made of suitable metal and material | If needed, original unavailable / damaged, Providing of a new fan, fan cover and terminal box covers made of suitable metal and material |
| 60 | 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.) | 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.) |
| 61 | 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. | 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. |
| 62 | 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. | 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. |
| 63 | 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 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] |
| 64 | 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 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] |
| 65 | 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 DE side endshield. If any damage has been noticed, the same has to be corrected by providing a new cast iron sleeve. |
| 66 | 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. | 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. |
| 67 | 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. | 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. |
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