GENERAL-Replacement of damaged old transformer and installation of new 315 KVA outdoor type oil cooled transformer at Nedumkayam LIS under MI Division Palakkad-HT scheme Nedumkayam-HTElectrical- Work

Amount

SITC of 315 KVA transformer

OD180730/2022-2023:Dismantle all the electric connection from the damaged 315 KVA out door type oil cooled transformer. Removing the fencing around the transformer yard , lower the transformer safely, with necessary equipments, Take out the transformer and keep it in safe place.

OD180731/2022-2023:Dismantle all the electric connection from the damaged AB switch , lightning arrester , DO fuse and other porcelain insulators and then bring down the all items safely and keep it in a very safe place.

OD181110/2022-2023:Scrapping , cleaning the existing 4 pole structure ie,I channel , C channel and other supporting channels and painting with two coats of synthetic enamel paint over a coat of red oxide primer after renewing the GI nuts and bolts etc as required.

OD181119/2022-2023:Scrapping , cleaning the existing fencing of the transformer yard and painting with two coats of synthetic enamel paint over a coat of red oxide primer etc as required.

OD181137/2022-2023:Supply and providing the following required accessories in the existing 4 pole structure such as cross arms, 11KV 45KN disc insulators- 9 Nos , 11 KV pin type insulators- 18 Nos, 11KV, 400A AB switches-2 Nos, DO fuse -3 Nos , lightning arresters- 3 Nos, HT stay set 4 Nos, and providing adequate size jumper connections etc as required.

OD181139/2022-2023:SITC of 11 KV CTPT(out door- Oil cooled 25/5 ) of accuracy class 0.2 s with required supporting accessories.

OD111513/2023-2024: Supply ,testing and installation of L & T/ equivalent make HT TOD Meter /5 3 P 4 wire class 0.2 S class Uni direction.

5.3:Earthing with G.I. earth plate 600 mm X 600 mm X 6 mm thick including accessories, and providing masonry enclosure with cover plate having locking arrangement and watering pipe of 2.7 metre long etc. (but without charcoal/ coke and salt ) as required.

5.9:Supplying and laying 25 mm X 5 mm G.I strip at 0.50 metre below ground as strip earth electrode, including connection/ terminating with G.I. nut, bolt, spring, washer etc. as required.(Jointing shall be done by overlapping and with 2 sets of G.I. nut bolt & spring washer spaced at 50mm)

90.16.3.3:Supply and clamping the following size of strips on surface of wall/ parapet/ existing cable tray using clamps fabricated from 20 X 3 mm GI flat duly painted or heavy duty GI spacer saddles spacing of clamps not exceeding 1 m, making good the damages, colour washing etc. as required ( for horizontal run)25 x 6 mm GI strip

90.16.4.3:Supply and clamping the following sizes of strips on surface of wall / parapet/ existing cable tray using clamps fabricated from 20 x3 mm GI flat duly painted or heavy duty GI spacer saddles, spacing of clamps not exceeding 1 m , making good the damages, colour washing etc. as required ( for vertical run).25 x 6 mm GI strip

OD181150/2022-2023:Unloading the new 315 KVA transformer on the side of main road approximately at a distance of 350 mtr from the transformer yard. Then convey to yard, using the logs and rails very carefully without any damage, ( through narrow walk way ) by man power. as Special conveyance.

OD181151/2022-2023:Supply , Installation ,Testing and Commissioning of new 11kV/433V, 315 kVA outdoor type oil cooled transformer. specification : 1. Reference Standard : IS 2026 /IS1180 level 1(Amendment-March’21)(previous level 2) 2. Type & Make of Transformer : KEL / UNIPOWER or equivalent make Oil cooled Type, 3. Normal continuous Rating (KVA) : 315 4. Voltage Ratio : 11 kV/433 V 5. Rated Frequency : 50 Hz 6. Number of Phases : 3 7. Type of Cooling : ONAN(Oil Natural Air Natural) 8. Vector Group : DYN 11 9. Connections ( HV / LV) : Delta / Star 10. Winding Material : Copper 11. Tap changer type: Off circuit Tap Changer 12. Tapings on HV side : +5% to -5% in steps of 2.5% 13. Class of insulation : Class A 14. Lamination : CRGO 15. Insulation level a). Impulse withstand voltage (HV) : 75 kV ( Peak) b). Power frequency withstand voltage (HV/LV) : 28 kV (RMS) / 3 kV (RMS) 16. Terminal Arrangement (HV/ LV) : Cable box /Cable Box 17. Type of Installation : outdoor 18. Fittings and Accessories a) Rating and Diagram Plate b) Top Filter Valve c) Bottom Filter cum drain valve d) Lifting lugs for whole Transformer e) Earthing Terminals 2 Nos. f) Thermometer Pocket with plug g) Air Release Plug on tank cover h) Oil Conservator tank with drain plug, filing holes and cap i) Oil Level Indicator j) Silica-gel breather k) Explosion vent with diaphragm. i) Terminal box at HT & LT side ( if required )

OD181413/2022-2023:Supply and fixing of IP65 Protected MI Boxes with Hinged Lids suitable for mounting HT TOD meter of dimension min 315mm L x 214mm W x 600mm H made of Polypropylene with lock of Hensel MI 9411 or equivalent

90.14.5:Supply and fabrication conveyance and installation of angle iron frame work for wall mounting panel board

14.7:Providing and laying in position 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.

OD181444/2022-2023:Providing and laying in position graded stone aggregate 40 mm nominal size in transformer yard etc as required

OD82696/2023-2024:Provision for liaison works for obtaining statutory approval from the electrical inspectorate / departments.

OD82695/2023-2024:Fees to be paid to KSELB towards scrutiny, meter testing & inspection ( actual amount will be reimbursed on production of original documents )

SABI ENGINEERING COMPANY

Bidder Name

SABI ENGINEERING COMPANY

AMAZON ELECTRICAL