WBPHED/EE/MLMD/NIeT_07 of 2024-2025

Amount

Supply, delivery & installation of CPCB II compliant 62.5 KVA,415 V (3 Phase) DG Set Comprising of Cummins make engine model 4BTAA3.3G11 and 62.5 KVA Stamford make alternator mounted on a common base ,complete with AMF Panel. Installing, Testing and Commissioning of ‘Silent Type’ Diesel Generating set alongwith AMF panel having Prime Power Rating of 62.5 KVA, 415 volts at 1500 RPM, 0.8 lagging power factor at 415 V suitable for 50 Hz, 3 phase system & for 0.85 Load Factor and consisting of the followings:Make: Cummins/Kirloskar/approved make Base Frame & Foundation: Both the engine and 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 recommendations of manufacturer. Fuel Tank: Daily service fuel tank of atleast 120 liters capacity fabricated out of 3 mm thick M.S. sheet complete 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 exhaust silencer and catalytic convertor. Starting System: (a) 12V/24V DC starting system comprising of starter motors: voltage regulator and arrangement for initial excitation complete with suitable nos. of batteries (25 plates, 180 Amp. Hour capacity lead acid type) as required as per specifications. (b) Accoustic and weather proof enclosure with arrangement for fresh air intake for cooling of the engine & alternator, extraction, discharging hot air in to the atmosphere

Diesel engine 4 stroke liquid cooled, electric start,startinng system 24V DC Electrical, 6/8 or suitable Nos of In line cylinders, Compression ratio16.5:1 and performance class of generator set at 1500 RPM suitable for above output of alternator at 40 Degree C, 50% RH & at 1000 Meter MSL and conforming to BS 5514, BS 649, IS 10000, capable of taking 10% over loading for one hour after 12 hours of continuous operation. The engine will be fitted complete with all the required accessories. Engine mounted Instrument Panel fitted with and having digital display for following: (i) Start-stop switch with key (ii) Water temperature indication (iii) Lubrication oil pressure indication (iv) Lubrication oil temperature indication (v) Battery charging indication (vi) RPM indication (vii) Over speed indication (viii) Low lub. Oil trip indication (ix) Engine Hours indication. Alternator : Synchronous alternator rated at 62.5 KVA, 415 volts at 1500 RPM, 3phase 50 Hz, AC supply with 0.8 lagging power factor at 40 Degree C, 50% RH & at 1000 Meter MSL. The alternator shall be having HCl444D equivalent frame, IP2x SPDP enclosure,voltage regulation Max. 1%, brushless, continuous duty, self-excited conforming to IS/IEC 60034 and self-regulated through AVR conforming to IS: 4722/BS 2613 suitable for tropical conditions and with class- H insulation.

Sub-head ‘B’: Supply and delivery at site the following Cables:

70 sq.mm 3.5 core 1.1KV PVC/XLPE insulated aluminium armored cable. .As Per IS-7098 (Part 1) 2011 with Up To Date Amendments.

50 sq.mm 3.5 core 1.1KV PVC/XLPE insulated Copper conductor cable. .As Per IS-7098 (Part 1) 2011 with Up To Date Amendments.For AMF panel to Battery.

Sub-head ‘C’ : Laying of one cable upto 150 sqmm through existing covered masonry trench incl. taking out RC covers, setting them in order, mending good the damages filling the trench with fine dry sand incl. supplying sand.

Earthing: Excavation of soil for installation of Earth Electrode and filling & ramming. (a) For Soft Soil

Earthing with 65 mm dia GI Pipe (TATA-Medium) X 3.0 Mtrs. Long and 1no. 50mm X 6mm galvanized (Hot Dip) steel strip (4mtrs. Long), 20 mm dia X 125 mm long galvanized bolt, double nuts, double washers including finishing both ends by making holes etc. and S & F 65mm dia GI Pipe (ISI-Medium) protection (3mtr. long) to be filled with bitumen partly under the ground level and partly above the ground level to an average depth of 3.65 mtr. (Two set for nuetral earthing & two set for body earthing ).

Extra for providing masonary enclosure on the top of the earth electrode of overall size 86.36cm. X 86.36cm. X 46 cm. deep (below ground level ) complete with cemented brick work (1:6) of 25 cm. with duly plastered with cement mortar (inside) C.I. hinged inspection cover of size 36.56 cm. X 35.56 with locking arrangement, G.I. reducer including drilling of 46 nos. 12 mm dia holes on the G.I. pipe.

Extra for treatment of soil by using salt and charcol or coke for pipe electrode ( for soft soil )

Connecting the equipments body / Neutral to earth busbar, including S & F 50mm X 6mm Galvanized (Hot Dip) MS flat on wall / floor with GI saddle as required and connection to equipments with including drilling holes, bolts, nuts, washers etc.

Making of floor inside the fencing (6 M x 6 M) by suitable earth cutting, sand filling ,brick flat soling (approved quality, 1st class bricks), cement concrete by (1:2:4) proportion (50 mm thick minimum) including plastering finishing by net cement finish all complete maintaining slope (1:50 mm) minimum to ensure proper drainage of rain water all complete as per direction and upto satisfaction of EIC.

M.S. structural works in roof trusses with tubular sections conforming to IS: 806-1968 & IS: 1161- 1998 cnnected to one another with bracket, gusset cleats as per design and suitable for 2.3 X 5.3 X2.5 M Gen Set, direction of Engineer-in-charge complete including cutting to requisite size,fabrication with necessary metal arc welding conforming to IS: 816-1969 & IS: 9595 using electrodes of approved make and brandconforming to IS:814- 2004, haulage, hoisting and erection all complete. The rate includes the cost of rolled steel section,consumables such as electrodes, gas and hire charge of all tools and plants and labour reqired for the work including all incidental chages such as electricity charges, labour insurance charges etc.Payment to be made on the basis of calculated weight of structural tubular memebrs as specified in relevent IS code in finished work.Payment for gusset, bracket, cleat may be made by adding the actual weight of such items with weight of finished structuralmembers. The rates are considered for a height of erection 8 m. /2nd floor level from the ground. Add 1.5 % extra over the rate for each additional floor or 4m. beyond the initial 8 m. or part thereof.i) For trusses spanning up to 12.00 m

Supplying, fitting & fixing Zn-Al alloy (55% Al & 45% Zn) coating of 150 grams per sq. metre (followed by colour coated on both side)steel sheet work having minimum yield strength of 550 Mpa of trapizoidal profile of approved make (excluding the supporting frame work) fitted and fixed with 55 mm & 25 mm self tapping screw,EPDM Washer 16 mm dia & 3 mm th. washer etc. complete with 150 mm end lap and one corrugation minimum side lap. (Payment to be made on area of finished work). a) With 0.5 mm thick sheet

Making MS wire net fencing along with fitted in MS flat /MS angle structure frame around the solar pannel platform by supplying and fitting fixing of galvanized MS angle of approved quality which will be grouted on the earth by C.C. (1:2:4) foundation as per drawing including an arrangement and provision of a gate(MS frame with net) with locking facility including exterior painting (two coat over two coat primer) with lock and kety facility should be provided as per direction of EIC.size of area 8M X6M approx.

Trial run for the enire system including suppling diesel and skilled manpower. (Considering one operator and approx 15 lt/hr consumption of fuel)

N.B. - Make as per departmental approved vendor list.

ADD GST @ 18%

ADD Cess @ 1%

ALPHA ENTERPRISE

M/S. Sajahan Chowdhury