NISER/IWD-ELECT /LCS/2021-22/006

LT Panel: Supply, installation, testing & commissioning of floor mounting front operated, front access, extensible type cubicle panel, totally enclosed, dust and vermin proof with IP-42 protection with hinged and lockable doors. Switchboards fabricated from 2 mm thick CRCA sheets including inter- connections, tinned copper crimping lugs, bonding to earth and painting suitable for use at 415 V, 3 phase 4 wire 50 Hz system, and to withstand a fault level of 50KA symmetrical for 1 sec at 415 V complete as per specifications mentioned in point sl no 13 of technical specification. The LT panel consists of Incoming and outgoing feeder mentioned below.

M.V.Cables Supply, installation, testing & commissioning of 1.1 KV grade XLPE insulated, FRLS inner sheath PVC tapped, extruded outer sheath PVC, GI strip / wire armoured, multistranded / aluminium conductor power cable confirming to IS : 1554 part I with up to date amendments, in ground at a - depth of 900 mm below ground level including excavation, sand bedding, laying of baked bricks on both side & top, temporary reinstatement, back filling, dewatering, consolidation, disposal of excess earth within the radius of 500 mtrs etc providing brass cable number tag as per enclosed detailed specifications, drawings & as per instructions of the E-I-C & of the following sizes. 3.5C X 300 sq.mm. Al.stranded FRLS XLPE cable

End Joints End jointing of following sizes of cable by crimping with supply of all jointing materials like solder less tinned copper cable socket, double compression cable glands, gland earthing, insulation tape, flux, duplicate interconnection between gland earthing strip & to the nearest earthing bus terminals as per the drawings, specifications and as per the instructions of the Engineer-in-charge. 3.5C X 300 sq.mm. Al.stranded FRLS XLPE cable

Chemical Earthing:- Earthing value should be less than 5 ohm. 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 minimum 250 microns and uniform with tolerance level of 0.1 micron Earth electrode will carry UL Marking on each electrode. Earth electrodes will be visually inspected and checked for dimension 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 enhancement material (backfill material ) - Back filled compound must have composition of Carbon, silica, chloride, calcium, tin, Mg, Lead, PBB, PBDE etc.as per the ISO standard and ISO certified by Govt. of India and "LOHM" compound may be used if ISO certified. NOTE : 1) The chamber cover & frame shall be hinged type & it shall be got approved by department. 2) All digging work has to be done manually

EARTHING Strip Laying :- Earth strip fixed on wall/side of trench/slab /column /beam/ shaft connection to panel/DBs/SFU's etc. with 5mm thick G.I. Spacers & 2mm thick G.I. Saddle in ground at 750 mm below including excavation in ground with protective baked bricks, excavation in ground, refilling & removal of excess earth within a radius of 500 m, temporary instatement & back filling of trench, consolidation, interconnection of earth strip/wire with brass bolt & nuts & washers & solder jointing, painting with two coats of black bituminous paint for earth wire/ strip in ground & green enamel paint for earth wire /strip on surface, etc .25 mm x 5 mm GI strip

SUPER ELMECH ENGINEERS PRIVATE LIMITED

M/S ODISHA GENERAL ELECTRIC

NAMAH SHIVAYA ENTERPRISE

National Engineering

SHREE VINAYAK ENTERPRISERS