| 1 | Supply, install, test and commissioning of 250 KVA/200 KW DG set diesel engine driven Generating set with alternator out put Voltage 415 Volts +/- 1% at set value of 415 V at a frequency 50HZ +/- 0.5%, suitable for prime duty with STD control panel outdoor type IP-54 consisting of AMF feature to be erected, (NTP for suitable for installing at Minniebay Port Blair, all mounted in acoustic enclosure and Control panel as per manufacturer's design and specification confirming to latest norms of CPCB complete with the following and connected accessories with necessary T&P complete :-
i) Inbuilt DG Fuel tank of minimum capacity for 12 Hrs operation on full load with fuel gauge etc complete all as per OEM recommendations
ii)Battery & Leads
iii)Silencer with pipe line & radiator as per OEM design & recommendations complete as per latest CPCB norms
iv)AVM Pads
v)First Fill of Lube
vii)Acoustic Enclosure
viii)Standard Control Panel( AMF) outdoor type with connected switchgear/relays/meters complete IP-54.
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| 2 | (ix) Suitable size cement concrete foundation platform of canopy base with height as required at site to mount the generator as per manufacturer's instructions/ recommendations. The cost of foundation bed including earth work etc shall deemed to be included in the quoted rate.
(x) Connecting cables, from existing panels and connecting cables , cables glands, cable lugs to new panel complete with all necessary accessories.
(xi) Install on the foundation, provn & install connecting fuel pipe lines, cables etc.
(xii) Test and commissioning complete including POL and resistive load bank required for testing.
(xiii) The cost of control cables from engine Control panel to AMF panel, transportation, installation, testing & commissioning etc shall be deemed to be included in the cost quoted.
(xv) The quoted rate shall deemed to be inclusive of earth work for foundation, Cement concrete foundation as per OEM design, dismantling of brickwall/PCC/tiles and making good the disturbed surfaces including repairs/replacement of brickwall/tiles/pcc & provision of steel wire mesh for providing proper exhaust/breathing system to DG set, Cabling etc incl necessary T&P for transportation and installation complete.
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| 3 | (xiv) The details specifications appended below :-
(I) ENGINE
(a) General: Suitable four stroke compressed ignition, radiator water cooled,Turbocharged aspiration, continuous duty with 10% overload capacity for 1 hour in 12 hours continuous running, with 40 to 50 C intake air temperature, latest CPCB Euro emission engine ,turbocharged four stroke engine developing minimum 306 BHP @ 1500 RPM under NTP conditions, coupled to alternator mounted on Channel Iron base frame with in built fuel tank of minimum capacity suitable for 12 Hrs operation complete .The prime mover provided should be as per IS specifications.
(b) Air intake system : Should comprise of dry type intake air filter mounted on engine, one in number vacuum indicator mounted on intake piping.
(c ) Exhaust System: Should comprise of one exhaust manifold, dry type, mounted on engine, one exhaust hospital type silencer which should be positioned in such a way that the exhaust gas is not sucked by the fan on the radiator/heat exchanger, thereby affecting the cooling system. The silencer should cater to the noise level tolerance prescribed in the relevant IS/BS. The silencer should be provided with flaps with a provision so that it will open only when the generator is running.
The complete exhaust system shall be properly supported so that entire lot of the exhaust system shall not fall on the DG Set.
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| 4 | (d) Fuel System: Should comprise of disposal type element fuel filter, pressure type fuel pump mounted on engine, non return check valve in fuel supply and drain lines, wire braided hose between filter and pump, fuel system with suitable capacity electronic governor and engine mounted actuator. The fuel tank must have proper locking arrangement with level indicator and to be fixed seperately / externally.
(e) Cooling System: Should comprise of radiator and connected pipeline complete, hospital type silencer and tested for 50 C ambient temperature with 7 PSI pressure cap mounted on base rail. The thermostat installed in the engine coolant outlet, fresh water pump mounted on engine, fan and fan hub mounted on engine. A reservoir of 50% of radiator capacity to replenish coolant by gravity (as and when required) is also to be provided.
(f) Lubricating System: Should comprise of lubricating oil sump mounted on engine, gear driven lub oil pump mounted on engine, lubricating oil cooler-fresh water cooled integral with engine cool out circuit mounted on engine, oil filter lubricating with cap and lubricating oil dip stick for oil level check mounted on engine. The system should be capable of feeding lube oil to the main end & large end bearings, cam shaft, valve rocker gear and all moving parts.
(g) Starting System: Should comprise of suitable voltage DC electrical starter mounted on engine, with suitable maintenance free battery of capacity 12 V DC - 02 Nos with suitable AH to be mounted in trays (having rubber insulation) on the main frame. It should have the provision to charge the battery from external sources during static condition and while running of the generator.
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| 5 | (h) AC Generator : The generator shall be horizontal and foot mounted,250 KVA, 415 Volts, 3 phase, 4 wire, 0.8 PF, 50 HZ, self excited, self regulated, brushless AC generator, suitable for voltage regulation + 1% , an ambient temperature of 40 to 50 C as per OEM design with IP-23 enclosure class H insulation and temperature rise limited to class H as per following technical details:-
(i) Type, Brush less AC Generators and space heater as per OEM design
(ii) Output rating 250 KVA
(iii) Output Voltage: 415 1% under all loading conditions and with maximum voltage Dip at full load 0.8 PF shall be < 19% as per OEM design.
(iv) Output frequency 50Hz 0.5% up to 0.8 lagging.
(v) No of Phases: 3 phase with 01 Neutral (4 wire)
(vi) Mounting : Horizontal foot mounted.
(vii) Enclosure : Minimum IP-23 / Drip proof and screen protected.
(viii) Electronic Automatic voltage regulator with response time < 75 m sec and + range of voltage adjustment.
(ix) Class of insulation-'H'
(x) Short circuit withstand 3 times rated current for 3 secs and overload withstand capacity for continuous duty with 10% overload capacity for 1 hour in 12 hours continuous running & 150% overload for 30 sec running
(xi) Overspeed capacity 1800 RPM for 2 min.
(xii) The maximum unbalanced load across phases shall be less than or equal to 25%.
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