National Institute Of Science Education And Research has published Tender For Provision For Isolation Transformer Fixing And Earthing Installation In The Lab No 404 Of Scs Building.. Submission Date for this Tender is 30-01-2023. Electrification Work Tenders in bhubaneswar Odisha. Bidders can get complete Tender details and download the document.
| Sr No | CorrigendumDate | Corrignedum | CorrigendumType | NewSubmissionDate |
| 1 | 23-Jan-2023 | Bid Auto Extn Corrigendum | Bid Auto Extn Corrigendum | 30-01-2023 |
| Sl. No. | Item Description |
| 1 | Supply Installation Testing and commissioning of3Phase, 10 KVAIsolation transformer Primary/secondary ratio -1:1,DYN11 vector group, Copper winding, 50Hz Frequency, 415Volt, Lamination CRGO, Impedance 5%,Ambient Temperature 1 to 55 Degree C, Power Factor 0.75 Lag to Lead, C.M.N.R. 100db, Class of Insulation Class B to H, Insulation Resistance More than 100 M Ohms, Coupling Capacitance Less Than 0.001 pF, Over Load Capacity 110% for 10 Minutes, Efficiency Better than 97% |
| 2 | Supply Installation Testing and commissioning of Maintenance free chemical Earthing Electrode -The Electrode will be a solid steel rod (Copper Cladded Earth Electrode) of 17mmDia and min 3 mtr length. The thickness of the copper coating will be 250 microns and uniform with tolerance level of 0.1 micron Earth electrode will carry UL Marking and pragati name engraved on each electrode. Earth electrodes will be visually inspected and checked for diamention and length before installation. Electrodes should not get physically crack or depleted in case of bending. (Including excavation and filling of material with the back field compound/Bentonite powder etc.) The electrode to be used to be tested and approved by CPRIBack fill Compound:- The Earth enhancenment material (backfill material ) - Back filled compound must have cmpostion of Carbon, silica,chloride, calcium, tin, Mg, Lead, PBB, PBDE etc.as per the ISO standard,IEC 62561-7 and ISO certified by Govt. of India (Quantity : As required). The chamber cover & frame shall be hinged type & it shall be got approved by department.The value of earth resistance and date of measurement shoud be written on the chamber cover with paint. |
| 3 | Cable laying for Earthing Supply, Laying and fixing of one number PVC insulated and PVC sheathed / XLPE power cable of 1.1 KV grade of following size on wall surface with 10 SWG G.I. wireetc. as required. 3Cx16 Sq MM AL Armoured XLPE Cable Make: Polycab/Finolex/RR Kabel |
| 4 | Supplying and making end termination with brass compression gland and aluminium lugs for following size of PVC insulated and PVC sheathed / XLPE aluminium conductor cable of 1.1 KV grade as required. 3Cx16 SQmm Cable |
| 5 | 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) |
| 6 | Providing and fixing earth bus of 50 mm X 5 mm copper strip on surface with suitable insulator for connections etc. as required for UPS and Insrtument Earthing. |
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