250 KVA DG set

Sub-Head 'A' (Equipments)

Providing, Installing, Testing & Commissioning of 'Silent Type' Diesel Generating set along with having Prime Power Rating of 250 KVA,415 volts at 1500RPM, 0.8 lagging power factor at 415 V suitable for 50Hz 3 phase system and for 0.85 load factor consisting of followings : (Please refer to Tender document)

Diesel Engine :-

Diesel Engine 4 Stroke water cooled, 6 cylinder, inline, electric start of suitable BHP at 1500 RPM suitable for above output of alternator at 47ºC, 50 % RH & at 1600 meter MSL and conforming to BS 5514, BS 649, IS 10000, Capable of taking 10% overloading for 1 hour after 12 hour of continues operation. The engine will be fitted complete with all the required accessories. (Please refer to Tender document)

Alternator :-

Synchronous alternator rated at250KVA,415V at 1500RPM,3 phase 50 Hz, AC supply with 0.8 lagging power factor at 50ºC, 50% RH & at 1600 Meter MSL. The alternator shall be having SP DP enclosure, brushless, continuous duty, self exist excited & self- regulated through AVR conforming to IS: 4722/ BS 2613 suitable for tropical condition and with class - F/H insulation.

Base Frame & Foundation

Both the engine alternator shall be mounted on suitable base frame made of MS channel with necessary reinforcement which shall be installed on suitable cement concrete foundation and vibration isolation arrangement as per recommendation of manufacturer.

Fuel Tank:-

Daily service Fuel tank of 990ltrs. liters capacity with all standard accessories and fuel piping between fuel tank and Diesel engine with MS class 'C' pipes of suitable dia. Complete with valves, level indications & accessories as required as per specifications.

Exhaust System:-

Dry exhaust mainfold with hospital exhausts silencer and catalytic convertor.

Starting System:-

24V DC starting system comprising of starter motors: Voltage regulation and arrangement for initial excitation complete with suitable nos. of batteries as required as per specifications or OEM

Acoustic and weather proof enclosure with arrangement for fresh air intake for cooling if the engine &alternator, extraction, discharging hot air in to the atmosphere as per specifications.

Fabrication, Installing, Testing, Commissioning of automatic mains failure control including automatic mains failure Panel, suitable for 250 KVA silent type DG set complete with relays, timers, set of CTs for metering & protection and energy analyzer to indicate currents, phase and line voltages, frequency, power factor, KWH, KVARH & provision for overload, short circuit, restricted earth fault, under frequency, control cabling from AMF panel to diesel engine and elsewhere if required, all complete and inter locking including the following : (Please refer to Tender document)

Supplying and fixing exhaust gas piping of suitable dia. Welded black MS, B Class pipe confirming to IS:3589 cut to required lengths and installed with necessary bends, supports and clamps, anti-vibration mountings, insulation of exhaust system with mineral wool/Rockwool, 50mm thick wire mash & cladding etc., as required as per specifications.

Sub-head 'B' Power/ Control Cables

Supply of PVC/XLPE insulated aluminum conductor armoured cable of 1.1KV grade 3-1/2 core 300sq.mm confirming to latest IS standard

Laying and fixing of 1 Nos PVC/ XLPE insulated aluminum conductor power cable 1.1KV grade of size exceeding 120 sqmm but not exceeding to 400sqmm including excavation and protected covering and refilling the trench in the ground etc. as required

Supplying and laying of Multicore 1.5 sqmm copper cable for Safety connections

Sub-Head 'C' Earthing,

Earthing with Copper** earth plate 600mm X 600mm X 3mm thick** including accessories, providing masonry enclose with cover plate having locking arrangement and watering pipe etc. (with charcoal or coke and salt) compete as required.

Providing & Fixing 25mm X 5mm Copper strip** in 40mm size medium class G.I. Pipe from earth electrode in ground, as required.

Sub Head D Servicing

Servicing of DG set with change of consumables/filters/Mobil oil as per standard during Warrantee period.

Sub Head E Third Party Inspection

Third Party inspection of DG set from reputed Government agencies like EIL, EPIL, Rites etc.

Sub-head 'F' (civil work)

Making PCC foundation completes 1:2:4, M-20 grade of apx. depth of 400mm and 150mm height above ground level the length & breadth of foundation should be at least 350mm more than the size of enclosure of the OEM/OEA.

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