Tender For Shifting Of Existing 1 Mva Transformer From Ns Building To Hrbc Substation Building Including Servicing, Overhauling, Testing & Commissioning, Enhancement Of Lt Panel, Lt Cabling, Earthing, Temporary Dg Supply During Execution And Payment
Tender Value
Ref. Documents
Estimated cost
Bid Submission
08 Aug 2026
16 days left
EMD
68118
Bank guarantee accepted
Document Fee
Ref. Documents
Non-refundable
Tender Type
Online
Tender Overview
Organization
Tender ID
Competition Type
NCB
Bidding Type
Tender
Location / State
Kolkata → West Bengal
EMD Exemption
Not Available
Quantity
Not Available
Website
Contact Person
Address
Project Description
Tender for Shifting Of Existing 1 Mva Transformer From Ns Building To Hrbc Substation Building Including Servicing, Overhauling, Testing & Commissioning, Enhancement Of Lt Panel, Lt Cabling, Earthing, Temporary Dg Supply During Execution And Payment Of Cesc Load Extension Charges In Connection With Renovation Of Hrbc Bhawan At Munshi Prem Chand Sarani, Kolkata - 700021 During The Year 2026-2027.
BOQ
| Sl. No. | Item Description |
| 1 | Supply and installation of L.T. cubical type fully compartmentalized distribution panel board, having rigid and self supporting structure fabricated with 14 SWG CRCA sheet with M.S. angle iron frame (main frame with 50 x 50 x 6 mm angle and each vertical compartment with 40 x 40 x 6 mm MS angle iron). The base of panel should be made with 75mm x 40mm x 4.4 mm M.S. channel. (Main LT Panel Board) [Manufacturer/Fabricator having Test Certificates from CPRI]. An Auto Cad Drawing of the panel has to approved by EIC before making of panel. |
| 2 | Supply and installation of L.T. cubical type fully compartmentalized distribution panel board, having rigid and self supporting structure fabricated with 14 SWG CRCA sheet with M.S. angle iron frame (main frame with 50 x 50 x 6 mm angle and each vertical compartment with 40 x 40 x 6 mm MS angle iron). The base of panel should be made with 75mm x 40mm x 4.4 mm M.S. channel. (Main LT Panel Board) [Manufacturer/Fabricator having Test Certificates from CPRI]. An Auto Cad Drawing of the panel has to approved by EIC before making of panel. |
| 3 | Construction Details :- All incoming & outgoing switches are to be housed in respective compartments hinged and gasket doors at the front. All doors should have panel locking arrangement in such a fashion that it can not be on unless the feeder remains in off position. The rear panel should gasketed wire net guard for ventilation arrangement will be made of easy accessibility to each compartment by providing rear panel doors with locking system . The panel is to be properly gasketed to prevent the dust & vermin. All vertical bus bar chambers is to properly arrange and all electrical equipments are to be fixed by nuts and bolts on suitable Hylam board / porcelain insulators of adequate size and dimension. The outgoing feeder connection from respective switches are to be made at rear side of panel by means of busbar, copper multi core cables, to be terminated on bolted type terminals for cable connection or on bush insulators for bus bar connection. Each compartment will be providing with DMC/FRP board at back side. |
| 4 | Incoming Arrangement :-i) 415 V, 1600A, 50 kA 4(four) pole electrically draw- out type A.C.B. with Microprocessor-based protection release. (Make – L & T, Cat no.- SL96075 or equivalent model of SIEMENS/ABB) ------3 nos. |
| 5 | Bus bar Section :-500V, 2000 Amp capacity 99.9% – 99.5% electrolytic tinned 4 bar copper bus bar [size of flat- 3x 100 mm x 12 mm + 1x 100mm x 12 mm] mounted on non-hygroscopic porcelain insulator / hylam sheet having sufficient di-electric strength duly wrapped with colour PVC tapes (Red, yellow, blue & black) for phases & neutral identification - 1 set |
| 6 | The busbar is to be rigidly supported on suitable non-hygroscopic insulating materials of robust ration to with stand electromechanical stress in the event of earth fault. All connection to bus to made by suitable nuts & bolts. The busbar is too wrapped with coloured PVC (Red, Yellow, Blue & Black) for colour identifications. |
| 7 | Outgoing Arrangement :-a) 415V, 630A, 36kA FP MCCB With Thermal - Magnetic Release(Make- L&T, Cat No.- CM94106OOT1OG) or equivalent model of SIEMENS /ABB/ Schneider) with extended spreaded terminals (L&T- Kit CM92004OOOO- 8 Pcs or equivalent model of SIEMENS / ABB/ Schneider) and Rotary Handle Extended ROM (L&T, Cat No.-- CM99861OOOO) or equivalent model of SIEMENS / ABB/ Schneider) -- 1 No. |
| 8 | b) 415V, 400A, 36kA FP MCCB With Thermal - Magnetic Release (Make- L&T, Cat No.- CM98403OOROOG or equivalent model of SIEMENS / ABB/ Schneider) with extended spreaded terminals (L&T- KitST98066OOOO- 8 Pcs or equivalent model of SIEMENS / ABB/ Schneider ) and Rotary Handle Extended ROM (L&T, Cat No.-- CM99861OOOO or equivalent model of SIEMENS / ABB/ Schneider) -- 3 Nos. |
| 9 | c) 415V, 320A, 36kA FP MCCB With Thermal - Magnetic Release (Make- L&T, Cat No.- CM98403OOQOOG or or equivalent model of SIEMENS / ABB/ Schneider) with extended spreaded terminals (L&T- Kit ST98066OOOO- 8 Pcs or equivalent model of SIEMENS / ABB/ Schneider) and Rotary Handle Extended ROM (L&T, Cat No.-- CM99861OOOO or or equivalent model of SIEMENS / ABB/ Schneider) -- 4 Nos. |
| 10 | Metering Panel :-a) Multipurpose Meter Digital Type Load Monitor ( Make L&T, Cat No. - WL442011OOOO) - 1 No. |
| 11 | b)LED VAF + PF Meters ( Make L& T, Model- CAT NO.WL411020OOOO or equivalent)-----2nos |
| 12 | c) Indicating LED Lamp with colour glasses showing (Red/Yellow/Blue/Amber) (Make- Siemens, Cat No.- 3SB5285-6HC03, 3SB5285-6HD03, 3SB5285-6HF03 or equivalent) - 1 Set. |
| 13 | d) 1600/5 Amp ratio C.T (Kappa or equivalent) --- 3 nos. |
| 14 | f) Supplying & Fixing 6 Amp SP MCB ---- 3 nos. |
| 15 | g) Slide lock fuse ---- 3 nos. |
| 16 | h) High-speed heavy-duty Axial Flow Panel Cooling Fan of size 12 inches (300 mm diameter), operating on a single-phase 220V/240V AC, 50 Hz supply-----2no. |
| 17 | i) E.I. Danger Board of suitable size ------- 1 Nos. |
| 18 | Interconnection :- |
| 19 | All interconnection between incoming main to Busbar are to be made with suitable size electrolytic tinned copper bars or equivalent flexible pvc insulated multistranded single core Cu cable and the same between busbar to all outgoing mains i.e., 630A, 400A, 320A, FP MCCB are to be made by 4 x 80mm x 5mm, 4 x 50mm x 5mm, 4 x 40mm x 5mm Cu bars respectively and also for metering arrangements are to be made by suitable size of Copper wire with proper socketing of the end of each wire leads. |
| 20 | Earthing :-A separate continuous aluminum earth busbar of appropriate size is to be painted at the inside bottom of the panel and run across the full load of the panel board. All electrical equipment are to be properly earthed with suitable size G.I. wire. |
| 21 | The complete panel board is to be spray painted after required surface treatment by 7 tanks process / sand blasting with 2 coat of red oxide primer & 2 coat of finished paint over dried or powder coating. |
| 22 | Installation :-The complete panel board is to be installed on suitable brick padestal as directed by the E.I.C. All incoming/outgoing switches is to be properly lebeled on Acrylic sheet as per direction of EIC. |
| 23 | SUB HEAD - HT/ LT CABLING IN SUBSTATIONSupplying and delivery of HT Cable, 11KV(E)/6.6KV (UE) Grade stranded aluminum conductors, XLPE insulation, semiconducting screening, and aluminum armouring for mechanical protection and PVC/FR PVC outer sheathing in combination with copper tape etc. (IS 7098 Part - 2/2011 with Up To Date Amendments.) [Make:-Gloster/Polycab/Havells/RR Kable] (HRBC HT Panel to Trasformer ) |
| 24 | 3 Core x 240 Sq.mm |
| 25 | Laying of 1 No. 6.6/11KV (UE) Grade XLPE Aluminium conductor, PVC sheathed, armoured cable confirming to IS 7098, of earthed system of following size in the existing Masonary tranch as per GS. |
| 26 | 3 Core x 240 Sq.mm 11KV XLPE HT cable |
| 27 | Making heatshrinkable joints indoor type to the ends of the following XLPE HT cable at the transformer end as well as at the VCB ends supplying with necy. jointing kits (Raycham), sockets, sleeves, anti-corrossive paste, wires, solders, jointing compounds, rubber sheets etc. incl. supplying of necy. tools & tackeles for crimping the end sockets, soldering irons & making of glands at the both end of the cable as per directions of EIC |
| 28 | 3 Core x 240 Sq.mm 11KV XLPE HT cable |
| 29 | Supplying and delivery of following size Armoured cables XLPE/PVC insulated are designed for 1.1 kV Stranded Aluminium conductor, high tensile galvanized steel wire/strip armour for mechanical protection, and PVC/FR PVC outer sheathing power cable of following size. (IS 7098 Part - 1/2011 with Up To Date Amendments.) [Make:-Gloster/Polycab/Havells/RR Kable] |
| 30 | 1 core 400 sqmm [ 4RunX 400 Sqmm, 10mtr x 4 Nos. x 4Run=160Mtr] |
| 31 | Supplying and delivery of following size Armoured cables XLPE/PVC insulated are designed for 1.1 kV Stranded Aluminium conductor, high tensile galvanized steel wire/strip armour for mechanical protection, and PVC/FR PVC outer sheathing power cable of following size. (IS 7098 Part - 1/2011 with Up To Date Amendments.) [Make:-Gloster/Polycab/Havells/RR Kable] |
| 32 | a) 4 core 50 sqmm |
| 33 | b) 4 core 70 sqmm |
| 34 | c) 4 core 95 sqmm |
| 35 | d) 4 core 120 sqmm |
| 36 | Supplying and fixing compression type gland complete with brass gland, brass ring & rubber ring for dust & moisture-proof entry of XLPE/PVC armoured cables as below : [F-4/7] |
| 37 | a) upto 4 core 50 sqmm [F-4/7(c)] |
| 38 | b) upto 4 core 70 sqmm [F-4/7(c)] |
| 39 | c) upto 4 core 95 sqmm [F-4/7(c)] |
| 40 | d) upto 4 core 120 sqmm [F-4/7(c)] |
| 41 | e) Upto 1 core 400 sqmm [F-4/7(c)] |
| 42 | Finishing the end of following XLPE/PVC armoured cables by crimping method incl. supplying and fixing solderless socket (Dowels make), tapes, anticorrosive paste & jointing materials : [F-5/8(b)] |
| 43 | a) 4 core 50 sqmm cable [F-5/8(b)(xvi)] |
| 44 | b) 4 core 70 sqmm cable [F-5/8(b)(xvii)] |
| 45 | c) 4 core 95 sqmm cable [F-5/8(b)(xviii)] |
| 46 | d) 4 core 120 sqmm cable [F-5/8(b)(xix)] |
| 47 | e) 1 core 400 sqmm cable [F-5/8(b)(xxiii)] |
| 48 | Laying of one cable upto 150 sqmm through existing covered masonry trench incl. taking out RC covers, setting them in order, mending good the damages filling the trench with fine dry sand incl. supplying sand [F-3/4(a)] |
| 49 | Laying of one cable above 150 sqmm and upto 300 sqmm through existing covered masonry trench incl. taking out RC covers, setting them in order, mending good the damages filling the trench with fine dry sand incl. supplying sand [F-3/4(b)] |
| 50 | S & drawing 1.1KV grade 7 core 2.5 sqmm. PVC/Ar. copper cable from transformer's Temperature Scanner to VCB Controlling Relay for power & control supply. |
| 51 | S & drawing 1.1KV grade 6 core 2.5 sqmm. PVC/Ar. copper cable from transformer's Temperature Scanner to VCB Controlling Relay for power & control supply. |
| 52 | Making necessary internal connection from Transformer winding temperature relay to VCB WT Relay and Power DB to VCB including making connection etc. complete by expert HT Personal including testing, commissioning etc. |
| 53 | Supply & drawing 1.1 KV grade 2core 2.5 sq mm stranded armoured insulated copper control cable from power DB to HV panel, transformer's marshalling box. |
| 54 | Hiring charges of 440V, 500kVA Three phase DG set with required cable of appropriate size to be supplied by the Contractor including 1 no. Electrician and 1 no. Operator per shift basis in each day to ensure supply of un-interrupted power at Court Building during execution of the job of Sub-station Augmentation and dismantling the same after completion of the work.The execution of the job for Sub-station Augmentation must be completed in all aspects within a maximum period of 02(Two) days considering shutdown period of 8(eight) hours in each day, otherwise for extra duration, hiring charges for 1 no. 500kVA DG sets incl. cost of fuel oil should be borne by the executing agency. |
| 55 | Carrying charges of the afore-said DG set incl. all materials, fuel oil from workshop to site & storage and also back to workshop after completion of the said job & Cost of running Diesel cum Fuel consumption for operation of the above-said DG set during period of execution of the job of Sub-station Augmentation. |
| 56 | Providing & Earthing of Generator Neutral & Body on hire basis with 50 mm dia GI Pipe 2.5 to 3 mtrs. Long and 6/8 SWG GI wire with galvanized nuts and bolts waster etc. below ground level on hire basis and dismantling the same after completion on the said job. |
| 57 | Providing on hire basis incl. supply/drawing 1.1 KV grade 3.5/4 core 150 & 240sq.mm. PVC Copper cable. |
| 58 | Providing on hire basis incl. installation of LT electrical panel with suitable size of bus-bar, Incoming & outgoing Main Switches, cables etc. as per existing/actual site/Hospital load requirement for connecting all the existing outgoing lines of the Hospital Building with hired DG set for feeding power and connecting through suitable size Change over Switch with DG sets including all inter connection by copper cable. |
| 59 | Sub Head EarthingEarthing with 80 mm dia GI pipe (TATA-Medium)x 3.0 Mts.long and 1 x 19/8 stranded GI (Hot Dip) wire (4 Mts. long), 25 mm dia x 150 mm long galvanized bolt, double nuts, double washers including socketing at both ends of stranded GI (Hot Dip) wire by crimping sockets/ thimbles and S & F 40 mm dia GI pipe (ISI-Medium) protection (3 Mts. long) to be filled with bitumen partly under the ground level and partly above ground level to an average depth of 3.65 Mts [G-1/2(b)] |
| 60 | Earthing with 65 mm dia GI pipe (TATA-Medium)x 3.0 Mts.long and 1 x 19/10 stranded GI (Hot Dip) wire (4 Mts. long), 20 mm dia x 125 mm long galvanized bolt, double nuts, double washers including socketing at both ends of stranded GI (Hot Dip) wire by crimping sockets/ thimbles and S & F 40 mm dia GI pipe (ISI-Medium) protection (3 Mts. long) to be filled with bitumen partly under the ground level and partly above ground level to an average depth of 3.65 Mts [G-1/2(c)] |
| 61 | Extra for providing masonery enclosure on the top of the earth electrode of overall size 86.36 cm x 86.36 cm x 46 cm deep (below Ground level) complete with cemented brick work(1:6) of 25 cm width duly plastered with cement morter (inside) CI hinged inspection cover of size 36.56 cm x 35.56 cm with locking arrangement, GI reducer including drilling of 46 nos. 12 mm dia holes on the GI pipe [G-2/3(a)] |
| 62 | Excavation of soil for installation of Earth Electrode and filling & ramming. [G-1/1] |
| 63 | a) For Soft Soil [G-1/1(a)] |
| 64 | Extra for treatment of soil by using salt & charcoal or coke for plate electrode [G-2/3(b)] |
| 65 | Extra for connecting the neutral of Transformer/Earth busbar to earth electrode including S & F Galvanized (Hot Dip) Steel strip 65 mm x 8 mm on wall/floor with GI saddles & insulating the same by one layer of PVC strip over one layer of ampere tape [G-3/6(d)] |
| 66 | Connecting the equipments body to earth busbar including S & F 25 mm x 6 mm galvanised (Hot Dip) MS flat on wall/floor with GI saddles as required and connection to equipments incl. drilling holes, with bolts, nuts, washers etc. [G-3/5(d) ] |
| 67 | Connecting the equipments body to earth busbar incl. S & F 50 mm x 6 mm Galvanized (Hot Dip) MS flat on wall/floor with GI saddle as required and connection to equipments with incl. drilling holes, bolts, nuts,washers etc. [G-3/5(e) ] |
| 68 | Insulating the 65 x 10 mm copper flat incl. S&F black heat shrink PVC sleeves etc. The PVC tube sleeve to be inserted on the copper flat and heat shrinked by heating apparatus by skilled technician carefully without damaging the PVC sleeve as per direction of the EIC (for transformer neutral earth bus bar). |
| 69 | Supply & fixing 75x45 mm \\"C\\" channel having length of 2 mtr. each channel incl. nuts, bolts and washer etc. |
| 70 | Providing of 2.5mm thick Sintex SMC chequred plate. |
| 71 | Construction of Masonry Trench of size 800mmx600mm with both side wall & base made up of breaks including groveing for holding of MS checker plate. The whole Masonry Trench should be finishet with net cement. |
| 72 | Verification by H.T. Expert Supervisor First, it will check the condition of the 1000KVA transformer at site. (If required for safe transport due to damage/leaks). |
| 73 | Mobilization of crane /Hydra and expert rigging crew to safely lift the off-condition unit from its existing plinth. |
| 74 | Secure breakdown, typing down, and transport via flatbed trailer from the Origin site to the service centre. Includes all necessary transit insurance and permits. |
| 75 | At service site removal of transformer enclosure panels to access the core and coils. |
| 76 | Removal of accumulated dust, dirt and carbon soot using an industrial vacuum cleaner and low-pressure dry compressed air ( less than 2bar to avoid winding damage). |
| 77 | Cleaning of 1000KVA Transformer cast resin surfaces, support blocks, and insulators using lint-free cloths moistened with an approved, fast-evaporating electronic cleaning solvent or isopropyl Alcohol(IPA). |
| 78 | Deployment of external infrared (IR) heating lamps, space heaters, or a temporary hot-air blower system inside the enclouser. |
| 79 | Windings will be heated gradully to a target temperature of 80 Degree© to 90Degree©. Temperature will be strictly monitored via thermal imaging and the Transformers internal RTDs to prevent overheating.(under Observation) |
| 80 | Maintaing the stable temperature for 12 to 24 hours (depending on maoisture severity) to allow the moisture to evaporate completely. |
| 81 | Mobilization of crane /Hydra and expert rigging crew to safely lift the off-condition unit from its Service centre to HRBC Bhawan. |
| 82 | Mobilization of crane /Hydra and expert rigging crew to safely lift the off-condition unit from its Service centre to HRBC Bhawan. |
| 83 | Erection / Installation of 6/0.415 KV 1000 KVA Power Transformer including carriage within a lead of 30 Mtr. by placing in position & fixing after levelling, fitting & checking up instruments & relay set. & instrument test of all instruments and obtain final approval from the Inspector of Directorate of Authority required for making Electrical Structure & commissioning complete . |
| 84 | Visual Inspection and checking by HT Expert supervisor of existing ICOG panel for structural integrity, distortion, cracks in insulation, or signs of tracking and overheating. |
| 85 | Throughly Serving and removal of all contaminated grease using safe dielectric solvents, through cleaning of the breaker truck framework of ICOG Panel. Apply fresh, manufacturer-specified high-temperature lubricant to all gears, linkages, Trip/Close latches, and pivot points. |
| 86 | Checking the rack-in/rach-out aligment, emergency manual trip operations, and cradle safety interlocks. |
| 87 | Making testing arrangement & submitting the test report for high voltage testing of specified voltage incl.checking & testing of all HT / LT equipmens (vector group, magnetizing balance, magnetizing current, Ratio Test, Routine tests etc) as per requirement of Directorate of Electricity and commissioning the installation after obtaining the approval of Directorate of Electricity. |
| 88 | Carrying out High Voltage Pressure Test of the Transformer, H.T. VCB and H.T.cables seperately at required D.C. voltges (rectified A.C.) for ONE minute for the transformer,VCB, and also per phase of the cable with own tools and tackles as per standard safety measure and as per direction of EIC. |
| 89 | Testing the overload and earth fault tripping coils of the H.T. ICOG Panel switch Board by Paimary/secondary injection RelayTesting Set incld. making necessary calibration for proper tripping according to full load current of the transformers incld. carrying the Relay Testing set to and from site with own tools and tackles as per standard safety measure and as per direction of EIC. |
| 90 | Physically shifting the CT secendary connections to the desired ratio tap at the CT terminal Block/ VCB Panel. And then Updating the CT Ratio (CTR) parameters inside the nummerical protection relay. Must be recalculating and adjusting the Overcurrent and Earth fault pick-up currents based on the new ratio and load requirements. |
| 91 | Cost of running Diesel cum Fuel consumption for operation of the above-said DG set during period of execution of the job of Sub-station Augmentation. |
| 92 | Add. G.S.T.@ 18% on total value. |
| 93 | Add. LWC.@ 1% on total value Please Enable Macros to View BoQ information |
AI Tender Summary
Tender Timeline
Jul 20, 2026
11:30 IST
Tender Published
Tender notice published.
CompletedAug 08, 2026
17:00 IST
Bid Submission Deadline
Online submission via eProcurement portal.
Upcoming · 16 daysAug 10, 2026
Bid Opening Date
Technical bids will be opened and evaluated.
Upcoming · 18 daysTender Documents
Download All (ZIP) ↓
Disclaimer
We takes all possible care for accurate & authentic tender information. However users are requested to refer Original source of Tender Notice / Tender Document published by Tender Issuing Agency before taking any call regarding this tender