SPECIAL REPAIRS TO REPLACEMENT OF BER 500 KVA DG SET AT MSL SHED AND CONNECTED WORK

Amount

Supplying installing testing and commissioning diesel engine driven generating set 415 V, 3 phase, 4 wire as per BS 5514/IS-10002 complete including automatic on main failure (AMF) panel complete with relay for automatic operation on failure, of capacity 500 KVA (Standby duty) at NTP conditions with acoustic enclosure as per latest CPCB- IV emission norms and including PCC foundation of required size ( The drawing & specification for foundation will be submitted by contractor) as recommended by the manufacturer and comprising of the following :-

(a) DIESEL ENGINE :- (i) Multi cylinder, 4 stroke compression ignition, heavy duty, turbocharged and after cooled diesel engine, water cooled with standard integral set mounted radiator system suitable for operation at 50 degree Celsius ambient temperature, A1 class Electronic governing mechanism, all as per BS-5514/IS-3046,1500 RPM, complete with all safety accessories and suitable for generating set application and capable to produce an output of 500 KVA/400 KW from a coupled alternator under NTP conditions, complete with following :-(i) Starting System:- 24 Volts DC electric starter with required batteries and charging alternator, engine wiring harness and sensors as required.

(ii) Fuel System:- Combined unit Injectors, electronic governor & Fuel Actuators with governing capability as per ISO 3046 Class A1 along with sychronous capability, replaceable fuel filter elements with primary filter and water separator, fuel piping complete with integral fuel tank of minimun capacity suitable for 8 hrs running of DG set at full load, provided with drain plug, air vent, inlet & outlet connection, level indicator and provn for cleaning. (iii) Lube Oil System:- Lube oil circulation pump with safety valve, Lub oil filter, Lub oil cooler, Oil filler neck and oil dipstick for measurement, Open crankcase venting system etc.

(iv) Combustion Air System:- Exhaust turbocharger, Charge Air Cooler mounted on engine, exhaust flexible bellows, residential type exhaust silencers and extended silencer pipe of same size up to 3.0 Mtr duly insulated and aluminium cladded as directed. (v) Cooling System:- Gear driven coolant pump required for both Jacket and intercooler along with necessary pipings on the engine. Water Pump should have suitable capacity to circulate cooling water to radiator mounted on the DG Acoustic Enclosure. (vi) Engine Mounting:- Engine mounting bracket with AVM pads mounted below base frame housing engine and alternator.

[b] ALTERNATOR: Self regulated self exited brushless alternator, 415 V, 3 phase, 4 wire, 50 HZ, S1 Duty, 500 KVA/400 KW at 0.8 P.F.,1500 RPM, with voltage variation plus or minus 10% of rated voltage from no-load to full-load, foot mounted, screen protected drip proof type with class 'H' insulation with temperature rise limited to Class 'F', with IP-23 ingress protection, ball/roller bearings at both ends of the alternator shaft, with necessary controls as recommended by the manufacturers, conforming to BS-5000/IS-4772/ IS/IEC 60034-1, capable of supplying unbalanced load with Inbuilt RTD & BTD all as specified.

(i) Engine Control Panel:- Microprocessor based controller for indicating Engine parameters, emergency stop push button, genset monitoring and display of engine-alternator operating parameters and alarms, genset protection against critical operating parameters, automatic start sequence control, acquisition and display of plant-related measuring data, suiatble for communication with an external system with Modbus interface (RS 485 RTU) compatible for SCADA with synchronisation facility to be used in future. Features: Auto and mannual Start/Stop, Easy accessible,Display: Engine Parameters. - RPM, Oil Pressure, Coolant Temperature, Hour Meter, Battery Volts, Battery Charging Voltage, Running Status, Event Recording, Fault Code display.Electrical Parameters: Voltage, Current, Hz, KW, KVA, Pf, kWh and KVAr, Breaker Status. Engine Protection: High / low coolent Temperature, Low Lube oil Pressure, Engine over speed shutdown . Electrical Protection: Overcurrent, short circuit, under/over frequency, under/over voltage.

(iii) Acoustic Enclosure:- The engine and alternator will be coupled,aligned and mounted on a specially designed common base frame fabricated from M.S. sheets/channels of suitable cross sectional area and length with bottom drilled holes suitable for and including supplying and fixing anti vibration pads. Outdoor Acoustic enclosure to be provided as per latest CPCB norms IV. Acoustic base frame shall be Fabricated using sheet / ISMC Channels with adequate stiffeners for strength. Should be Fabricated with Specially Formed CRCA Sheet metal of 2 mm thick shells with adequate stiffeners for strength. Roof panels designed with slopes to prevent rainwater stagnations and providing Silicon Sealants protects roof joints. Insulation Material should be: Rockwool of 64 KG/M3 density packed in minimum 100 mm thick or more layer panels to achieve suitable noise attenuation. Door Construction should be prefabricated CRCA sheet with double stepped formation. Doors to be fixed to mainframe by hinges. Suitable sealing given at all the panel joints to avoid the sound & water leakage. the Acoustic Enclosure panels shall be powder coated using minimum of 11 tank process which should include intermediate rinsing modes between each step. (iv) First fill of Pre mix Corrosion inhibitor coolant. (v) First fill of lube oil should be supplied along with DG set. (vi) First set of fuel filter,airfilter,lube oil filters etc. consumables should be part of DG set supply.

(vii) Any other devices/accessories required as per latest engineering practices as recommended/supplied by the manufacturers as standard eqpt. (viii) Documents : Two sets of following documents :- Maintenance and operation manuals for engine and alternator, spare parts catalogue, warranty/test certificates, wiring /schematic diagrams of control panels. (ix) DG set shall be tested for a duration of 12 Hrs at site using resistive load Bank. Cost of load bank and diesel required for testing at site shall deemed to be inclusive in the quoted rate.(xxv) Control cables required for all auxiliaries shall be included in quoted rate The length between DG AMF panel and DG set can be taken as max. of 30 Mtrs.

Supply, laying, testing & commissioning LT XLPE insulated Un Armoured (heavy duty) electric cable of single core 185 Sqmm with stranded copper conductor 1100 volts grade (ISI marked) & laid in trenches/pipes or fixed on pole from existing DG to LT Panel complete all as specified and directed.

Earthing complete with galvanised steel earth plate electrode 60 cm x 60 cm x 6 mm thick buried directly in ground (earth pit not less than 2.25 mtr deep below normal ground level) with top edge of the plate not less than 1.5 mtr below normal ground level surrounded from all sides by 15 cm thick packed layer of charcoal dust and common salt filling in alternate layers and electrode connections by mean of GI strip 32x6mm as earthing lead by means of bolts, nuts check nuts and washers of GI or steel and connecting to earthing test point, main switch board, testing on completion including GI pipe 20 mm dia light grade for watering and bringing the same upto 30 cm above normal ground level with plug at top including pipe fittings etc complete and GI pipe 40 mm dia light grade for the protection of GI strip upto 1.5 Meter complete including necessary excavation and earth work in any type of soil, returning, filling in approved soil and disposal of surplus soil to a distance n.exc 50 m all as specified as shown in electrical plate No 3 SSR Part-I. Note: earth pit cover is to be made 10mm MS Plate with the projection to overlap the four side of the road covered up to 10 cm with collapsable MS Handle including taking out old unserviceable earthing.

Leo Network power systems (BID ID -3136309)

Electromech Engineers (BID ID -3136341)

Shiv Enterprises (BID ID -3136421)

Vijay Electricals (BID ID -3134356)