Tender For General-Klc1- Supply Installation Testing and Commissioning of 1600Kva Transformer-Supply Installation Testing And Commissioning Of 1600Kva Transformer-General Electrical Work
Tender Value
2.40 Crore
Estimated cost
Bid Submission
26 Sep 2026
10 days left
EMD
1 Lakhs
Bank guarantee accepted
Document Fee
9759
Non-refundable
Tender Type
Online
Tender Overview
Organization
Tender ID
Competition Type
NCB
Bidding Type
Tender
Location / State
Thiruvananthapuram → Kerala
EMD Exemption
Available
Quantity
Not Available
Website
Contact Person
Address
Project Description
Tender for General-Klc1- Supply Installation Testing and Commissioning of 1600Kva Transformer-Supply Installation Testing And Commissioning Of 1600Kva Transformer-General Electrical Work
BOQ
| Sl. No. | Item Description |
| 1 | Electrical Works |
| 2 | OD53918/2025-2026:Supply Installation Testing and Commissioning of 1600KVA capacity (continuous loading) BEE 3 Star rated , 11/0.433 KV step down, 3 Phase, 50 Hz, Dyn 11 vector group, ONAN (Oil Natural Air Natural) copper wound transformer (Electrolytic grade 99.9% pure copper, Core made of first grade Cold Rolled Grain Oriented (CRGO) Core grade MOH or better, suitable for Indoor applications with On Load Tap Changer (OLTC) on HV side in range of +5% to -10% in steps of 2.5%, having cable end boxes on HV side suitable for 3x300 sqmm XLPE cable of 11 KV grade, including bus trunking arrangement on LV side complete with all accessories and safety provisions as per relevant IS Code including filling of filtered dehydrated oil and transformer shall be confirming to IS : 2026, IS : 1180. Insulation level (Impulse withstand)(KVpeak): HV-75. Insulation level (power frequency withstand)(KVrms) : HV- 28, LV- 3 The maximum flux density in any part of the core and yoke at rated voltage and frequency shall be such that the flux density with +12.5 percent combined voltage and frequency variation from rated voltage and frequency does not exceed 1.9 Tesla. The permissible temperature-rise shall not exceed 40 °C for oil and 45 °C for winding with ambient temperature of 50 °C. Hot spot temperature rise over a maximum yearly weighted temperature of 32°C is 98°C. Short circuit Thermal withstand time is 2 sec. % Impedance at 75°C, rated current and frequency: 6.25%. Outside of tank shall be painted with suitable thermo setting epoxy primer followed by two coats of polyurethane base paint shall be used. IS: 1180 (Part 3) shall be referred to for paint thickness for normal to medium corrosive atmosphere. HV Bushings: a. Reference standard: IS 2099 & IS 3347 b. Type of bushing: Porcelain c. Voltage rating: 17.5KV d. Current rating: 250A 19. LV &LVN Bushings: a. Type of bushing: Epoxy b. Voltage rating: 1KV c. Current rating: 3150A. Design ambient condition: a) air temperature 50 °C, b) Relative Humidity 90 % Max, c) Seismic Zone as per location of site, d) Altitude as per location/site. Noise level shall not exceed limits as per NEMA TR-1 with all accessories running measured as per IEC 551 / NEMA standard. The transformer should have QR code which should contain drawing, test report OEM manual etc. Marking Each transformer shall be provided with rating plate made of anodized aluminium/ stainless steel material securely fixed on the outer body, easily accessible, as per IS: 1180 Part-3. The entries on the rating plate shall be indelibly marked. Fitting and Accessories : The following fittings shall be provided:- a) Two earthing terminals with the earthing symbol b) Oil level gauge indicating oil level at minimum, 30°C and maximum operating temperature; c) Silica gel breather d) Drain-cumsampling valve (¾″ nominal size thread, IS 554) preferably steel with plug for three phase transformers; e) Thermometer pocket with cap; f) Oil filling holes having (1¼″ nominal size thread) with cover (for sealed type transformers without conservator); g) Lifting lugs for the complete transformer as well as for core and winding assembly; h) Pressure relief device or explosion vent; i) One filter valve on the upper side of the tank; j) Unidirectional flat rollers; k) Inspection hole; l) HV side neutral grounding strip (where one of the HV bushing terminal is connected to earth); m) Buchholz relay. n) Oil temperature indicator and winding temperature indicators for with suitable tripping mechanism above permissible limit; o) Additional Neutral separately brought out on bushing for earthing; p) Non return valve (for conducting pressure test); q) Pressure relief device or explosion vent r). Monogram Plate; s) Inspection cover t). Detachable type radiators with top and bottom shut off valve. a) Oil Conservator with Oil level indicator, minimum level marking and drain plug. b) Necessary hardware, clamps, lugs etc. for termination on HV/MV etc. for all transformers. All tests shall be conducted as per IS 1180 Part (3):2021. The Transformer shall be installed at site as per the direction of Engineer in charge. Authorised Service engineer of OEM should be present at the time of installation and commissioning. |
| 3 | OD66911/2025-2026:Dismantling the existing 1600KVA transformer and its accessories and existing bus duct from the foundation without further damage, shifting the same using crane, skilled labours and supporting tools etc. from the worksite and conveyance to convenient place without any further damages as per the directions of Engineer in charge. |
| 4 | OD69183/2025-2026:Supply and laying of 3 core 300 sqm stranded compact circular aluminium conductor, conductors screened with extruded semi conducting compound XLPE insulated, insulation screened with extruded semi conducting compound in combination with copper tape (0.3KA for I sec.) cores laid up. inner sheath of PVC tape, galvanized steel flat strip armoured, and overall PVC sheathed cable conforming to IS: 7098 part II 1985 with latest amendments in the existing masonry open duct and giving connection etc. as required. |
| 5 | OD21660/2026-2027:Supply, laying and clamping of 1no: PVC insulated and PVC sheathed armoured aluminium power cable,11KV grade of the following sizes using clamps noted along with the cables, spacing of clamps not exceeding 60 cms, making good the damages ,colour washing etc. as required 3 core 300 sqm stranded compact circular aluminium conductor, conductors screened with extruded semi conducting compound XLPE insulated , insulation screened with extruded semi conducting compound in combination with copper tape(0.3 KA for 1 sec.) cores laid up. inner sheath of PVC tape, galvanized steel flat strip armoured, and overall PVC sheathed cable conforming to IS:7098 part II 1985 with latest amendments |
| 6 | 10.5.4:Supplying and making outdoor cable end termination with heat shrinkable jointing kit completewith all accessories including lugs suitable for following size of 3 core, XLPE aluminium conductorcable of 11 KV grade as required :300 sq. mm |
| 7 | OD18804/2026-2027:Supply and drawing of 2.5 sqmm 12 core PVC/ XLPE insulated armoured control cables with copper conductors for working voltages up to and including 1100 V conforming to IS 1554 part I 1988 for PVC and IS 7098 Part I for XLPE with the cables, one number PVC insulated and PVC sheathed / XLPE power cable of 1.1 KV grade of following size in the existing masonry open duct and giving connection etc. as required. |
| 8 | OD18805/2026-2027:Supply, laying and clamping of 2.5 sqmm 12 core PVC / XLPE insulated armoured control cables with copper conductors for working voltages up to and including 1100 V conforming to IS 1554 part I 1988 for PVC and IS 7098 Part I for XLPE, spacing of clamps not exceeding 60cms, making good the damages , colour washing etc. as required |
| 9 | OD139120/2026-2027:Supply, laying and clamping of 1 no. PVC insulated and PVC sheathed armoured copper power cable, 1.1 KV grade of the following sizes using clamps noted along with the cables, spacing of clamps not exceeding 60cms, making good the damages , colour washing etc. as required. 4 core 2.5 sq mm with factory made clamp |
| 10 | OD18258/2026-2027:Supply and providing plate earthing with 1200x1200x12mm GI earth plate, 50 mm GI(medium class) watering pipe, GI funnel with weld mesh, 25x5 mm GI clamps, GI/MS cover plate with locking arrangements, charcoal/coke and salt etc. including providing brick work masonry enclosure at the top (450x450x450mm inside) etc. as required. |
| 11 | OD19216/2026-2027:Providing and fixing 75 X 6 mm copper strip on surface or in recess for connection using copper saddles ,Al alloy/cadmium plated iron screws, 40mm long PVC fastener etc. as required. |
| 12 | OD19231/2026-2027: Supplying and laying 75 mm X 6 mm copper strip at 0.50 meter below ground as strip earth electrode, including connection/ terminating with nut, bolt, spring, washer etc. as required. (Jointing shall be done by overlapping and with 2 sets of brass nut bolt & spring washer spaced at 50mm) |
| 13 | 3.13.9:Supplying, installing by suspension on ceiling/ along the wall, testing andcommissioning of following capacity Sandwich Type Rising Mains for use on 3phase 4 wire 415 volts, 50Hz A.C. supply with metal clad enclosure having IP-54rating after fixing the tap off boxes and all accessories, made of 1.6mm thick steelsheet duly powder coated in convenient sections complete with 4 Nos aluminiumbus bars having current density of 130 A/ sq cm at nominal current rating,necessary joints, elbow joints & expansion joints and bends, fire barrier at eachfloor, provision of tapping at every meter, adopter box and copper flexible forjoints, continuous earthing with 2 Nos aluminium strip of suitable size (one oneach side) including, G.I. clamping brackets, suspenders, angle iron bracket,steel fasteners. connecting to earthing system etc. as required2500 amps 50 KA SC for 1 sec |
| 14 | 14.10:Providing and laying in position reinforced cement concrete 1 :2:4 (1 cement : 2 coarse sand : 4 graded stone aggregate 20 mm nominal size) in foundation of pump, DG set etc. including form work etc. as required (excluding reinforcement). |
| 15 | 14.12:Providing 15mm thick cement plaster of mix 1:4(1 cement: 4 fine sand) at all levels |
| 16 | 90.14.5:Supply and fabrication conveyance and installation of angle iron frame work for wall mounting panel board |
| 17 | OD45487/2026-2027:Painting letters or figures of the size 2.50 cm, 4 cm or 5 cm with enamel paint as identification mark to transformer as required |
| 18 | 2.22:Providing and fixing H.T. danger notice plate of 250 mm X 200 mm, made of mild steel, at least 2 mm thick, and vitreous enameled white on both sides, and with inscription in single red colour on front side as required. |
| 19 | 2.21:Providing and fixing M.V. danger notice plate of 200 mm X 150 mm, made of mild steel, at least 2 mm thick, and vitreous enameled white on both sides, and with inscription in single red colour on front side as required. |
| 20 | OD53010/2026-2027:Supply and providing Class B (2.5 mm thick) Elastomeric insulating mat conforming to IS 15652/2006 with maximum use voltage is 11KV. |
| 21 | OD53014/2026-2027:Supply of Class 1 (white ) electrical insulating Gloves packaged in an individual container or package of sufficient strength to protect properly the gloves from damage, conforming to IS 13774/IEC 60903 suitable for working voltage upto 7.5 K V and shall be marked as per standard. |
| 22 | OD53013/2026-2027:Supply of Class 2 (yellow) electrical insulating Gloves packaged in an individual container or package of sufficient strength to protect properly the gloves from damage, conforming to IS 13774/IEC 60903 suitable for working voltage upto 17 K V and shall be marked as per standard. |
| 23 | OD43847/2026-2027:Charges for preparation Electrical scheme A3 size- First copy. |
| 24 | OD43848/2026-2027:Copying charges for Electrical scheme A3 size additional coppy |
| 25 | OD138980/2026-2027:Supply and providing First Aid Chart duly framed and placed in a conspicuous location for clear vision. Please Enable Macros to View BoQ information |
AI Tender Summary
Tender Timeline
Sep 15, 2026
11:30 IST
Tender Published
Tender notice published.
CompletedSep 26, 2026
17:00 IST
Bid Submission Deadline
Online submission via eProcurement portal.
Upcoming · 10 daysSep 29, 2026
Bid Opening Date
Technical bids will be opened and evaluated.
Upcoming · 13 daysTender Documents
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