Special Repair for Replacement of 500 KVA DG Set at Power House against BER Item Engine SM No 767 6007 DG 15 Alternator SM No 767 6007 AL 15 for Brichgunj Mil Stn Sri Vijaya Puram

500 KVA DG SET : Supply, installation, testing and commissioning of company assembled with acoustic enclousure (SILENT) diesel driven engine, silent DG set of capacity 500 KVA (400KW) duly certified by agencies/lab designated by CPCB 4+ latest norms for noise and pollution level (compliance with CPCB 4 + Norms or any updated norms) and in cylinder solution to meet latest emission norms CPCB 4+, 3 phase, 4 wire of 415 volts, 50 Hz, with ALTERNATOR, Auto start/stop control panel without changeover system, All the Major components of the engine alternator, after treatment system, control system and canopy shall be designed IS / IEC. The exhaust after treatment / the emission limits as per central pollution control board (CPCB) latest regulation / norms (NOx +HC < 0.67, CO < 3.5 ,PM < 0.2 & smoke limit < 0.7 ) remove emissions from the engine exhaust for reducing emissions, first fill up of lube oil and coolant including suitable No and capacity of batteries and PCC foundation as per manufacturers instruction ( PCC will be measured and paid seperately under relevent item), Engine and alternator shall be mounted on a common MS fabricted base frame with AVM pads. Acoustic Enclousure shall meet Mo EF / CPCB norms of 75 dB@ 1 Mtr at 75% load. complete all as specified. Note : Silent DG Set will be factory assembled of reputed manufacturer, Microprocessor based controller for generator set monitoring, metering and control system with LED display,electronic governor. Engine metering : Oil pressure, engine temperature,battery voltage, engine running hours, AC Alternator metering : L - L voltage, and L - N voltage, current, KVA,RPM, frequency, kwh, PF etc. Engine Protection : - Low lube oil pressure, high / low coolent temperature, battery high / low / weak volts, fail to crank / start sensor failure, cranking lockout, low fuel level. AC alternator protection : - Over / under voltage, over / under frequency, loss of AC sensing, over speed, over current, KW overload. ALTERNATOR:- Self exciting, self regulating brush less alternator conforming to IS/ IEC 60034-1 rated for 500 KVA continuous at the speed of 1500 RPM at 415 volt, 50 Hz, 3 phase, 4 wire system with advance electric voltage regulator to ensure high voltage accuracy within +1 % with class 'H' insulation and coupled with engine though flexible coupling and comforming to IS : 4722. DG set shall be synchronized with existing synchronization controller including provision of necessary Aux shielded cable and solid copper conductor 2.5sqmm, 6 core PVC insulater 1100 Volt graded , and sheathed cable from DG Set to synchronization controlled. Note:- (i) DG Set as mentioned above along with Alternator, Control & Meeting Circuit with detailed technical specification, wiring, circuit diagram duly indicating various spares (makes/capacity) along with bill of materials will be got approved from the GE before placing order to the firm.

M & L for PCC plateform (1:2:4) type B-1 using 20 mm graded aggregate and brick work in CM 1:4 all around the foundation including finishes all as directed by Engineer-in-Charge for resting of DG set and sound proof enclosures.complete all as specified and directed. (size 7 X 2.5 X 0.3 =5.25)

M & L Removing the existing DG set of the cap 500 KVA by the use of hydrolic crane or manpower from existing foundation insde the power house buildig to outside the the power house in due premises of power house as direceted by Engr - in -Charge

Supply , assembly and erection of PGI sheet with TDF flange rectangular/square duct made out of 'L' shaped hollow profile, duly factory boxed, incl all accessories such as Corner, Cleat, Carriage bolt, Gasket and appropriate sealant on longitudinal joints etc complete of size 20 Gauge including cutting and making good to wall and distrurbed surface as specified and directed by Engr-In-Charge.

Material and Labour for bracings, supports, clamps, making ducting frame and back plates fabricated from structural steel sections including nuts, bolts, washers, welding, bending cold or hot, drilling holes for bolts, in any shape or size as indicated or directed and inclusive of one primer coat, one under coat and one finishing coat of paint all as directed by Engr-In-Charge

M&L, for Earthing complete with Galvinised steel earth plate electrode of size 60cmx60cmx6mm thick buried directly in ground (earth pit not less than 2.25m deep below the normal ground level) with top edge of plate not less than 1.5m below normal ground level connected to galvanised strip 32 x 6mm as earth lead by means of bolts, nuts, washers and check nuts made out of copper earth plate all as shown on Electrical Plate No. 3 of SSR Part-I including testing on completion complete all as specified and directed. Note 1: The unit rate shall also include for earth work in any type of soil, PCC (1:3:6) type C1 chamber, RCC 1:2:4 type B-1 using 20mm graded stone aggregate, 50mm thick RCC cover slab reinforced with 6 Nos of 8mm dia TMT bars both ways, funnel with watering pipe 20mm dia medium grade, GI protection pipe light grade 40mm dia and wire mesh complete in addition to item No. 1(a) to (e) of preamble (Notes) under sub-heading earthing, specified on SSR Part-II.