NISER/IWD-ELECT/SCS/25-26/09

Supplly Installation, testing and commissioning of 10KVA 3 phase Isolation Transformer (1:1 ratio) , Dry type/Air cooled type transformer for industrial use. 3Phase Isolation Transformer to be connected with the existing power points. Winding- Copper wire, 95% efficiency, IR- ≥50 MΩ, Enclosure Protection Grade-IP24, Waranty-12months, Temperature--15℃~+50℃. Make- Siemens India, Servokon Systems Limited/Equivalent

Supplying and fixing of following ways surface/ recess mounting, vertical type, 415 V, TPN MCB distribution board of sheet steel, dust protected, duly powder painted, inclusive of 200 A tinned copper bus bar, common neutral link, earth bar, din bar for mounting MCBs (but without MCBs and incomer ) as required . (Note : Vertical type MCB TPDB is normally used where 3 phase outlets are required.) 4 way (4 + 12), Double door VTPN DB Make- Schnieder/Legrand/Hager/Havells

Supplying and fixing 40A rating, 240/415 V, 10 kA, "C" curve, Four Pole MCB (miniature circuit breaker) suitable for inductive load of following poles in the existing MCB DB complete with connections, testing and commissioning etc. as required in the existing DB. Make-Legrand/Hager/Schnieder/Havells

Supplying and fixing following rating, four pole, (three phase and neutral), 415 volts, residual current circuit breaker (RCCB), having a sensitivity current 30 mA in the existing MCB DB complete with connections, testing and commissioning etc. as required. 40 Amp RCCB Make-Legrand/Hager/Schnieder/Havells

Supplying and fixing 5 A to 32 A rating, 240/415 V, 10 kA, "C" curve, miniature circuit breaker suitable for inductive load of following poles in the existing MCB DB complete with connections, testing and commissioning etc. as required.

Wiring for circuit/ submain wiring alongwith earth wire with the following sizes of FRLS PVC insulated copper conductor, single core cable in surface/ recessed medium class PVC conduit as required. 4 X 10 sq. mm + 2 X 6 sq. mm earth wire Make: Polycab/Universal/Finolex/RR

Wiring for circuit/ submain wiring alongwith earth wire with the following sizes of FRLS PVC insulated copper conductor, 3 core cable in surface/ recessed medium class PVC conduit as required. FRLS 3 Core Cable: 2 X 4sq. mm + 1 X 4 sq. mm earth wire Make: Polycab/Universal/Finolex/RR

Cable laying for earthing Supply, Laying and fixing of one number XLPE Insulated, cores laid up, PVC tape innersheathed for Multicore Cables, armoured Aluminium cable of following size direct in ground including excavation, sand cushioning, protective covering and refilling the trench or in the surface with GI saddle, etc as required. 4Cx16 Sq MM AL Armoured Cable Make: Polycab/Finolex/RR Kabel

Supply Installation Testing and commissioning of Maintenance free chemical Earthing Electrode -The Electrode will be a solid steel rod (Copper Cladded Earth Electrode) of 17mm Dia 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 CPRI Back 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.

Providing and fixing earth bus of 50 mm X 5 mm copper strip on surface for connections etc. as required for UPS and Insrtument Earthing.