CWE/CHM(U)-101/2024-25 PROVN OF DIESEL ENGINE DRIVEN GENERATING SET (DG SET) 400 KVA AT OT COMPLEX AND ICU AT COMMAND HOSPITAL (WC) CHANDIMANDIR

Amount

Supply, installation, commissioning and testing (Auto Mains Failure Silent type) Diesel Engine Driven Generating Set (DG set) capable of delivering 400 KVA, 415 Volts (AC 3 Phase, 1500 RPM, 4 wire system of supply), 50 Hz at power factor 0.8 (minimum). The DG Set shall consist of a diesel engine flexible coupling coupled directly to matching alternator and mounted on metalastic foundation pads on a common base frame and thereafter installed in the CPCB approved acoustic enclosure (the complete set conforming to and test certified as per CPCB norms IV or latest and as specified) all as specified, directed complete with AMF control panel , fuel tank with mounting arrangement and inlet, outlet return oil arrangement, suitable exhaust pipe complete and shall comprise and including the following :-

(A) Engine (Prime Mover) : The diesel engine should be totally enclosed, compression ignition, water cooled (radiator cooled) turbo charged cooled suitable for Power generation application having minimum of suitable BHP capacity to drive the 400 KVA alternator at 1500 rpm under NTP condition conforming to BS 649, complete with all inter connecting piping and equipped with standard accessories such as Suitable fly wheel, Flexible coupling, Air Cleaner, Radiator heavy duty type, Cooling fan, Water circulating pump, Corrosion resistor, PT Fuel pump, Electronic governing control (EGC), Fuel filter, Fuel shut down solenoid (24 V DC, stop solenoid, Lubricating Oil filter, Oil cooler, By pass filter, Silencer, Starter etc.

(B) ALTERNATOR:- AC alternator copper wound, self excited, self regulated, self vent 400 KVA, Power Factor 0.8, 1500 RPM, insulation class 'H', Enclosure IP 23 complete with AVR with +0.5% voltage regulation, directly coupled to and match the above engine and alternator conforming to IS-4722, permissible over load 10% for 1 hour in 12 hour operation complete all as per IS-13364.

(C) Auto Main Failure(AMF): (i) AMF control panel suitable for 400KVA DG set consisting of overload relay, under current relay, phase failure detector, battery charger, delay timer Line voltage, Monitoring relay, MCBs, Relay Cord, Suitable busbar, Control wiring etc consisting of quick auto mode system. AMF panel shall be floor mounted, outdoor type 3.15mm thick CRCA sheet including meter connected and copper busbar of suitable rating and also having data logging history of engine etc. (ii) LED display designed to meet temp compensation, Start/Stop engine metering,oil pressure, coolent temp, battery voltage, engine speed,and AC alternator metering. (iii) 4 Pole ACBs 630 Amp with microprocessor release, 50 KA breaking capacity, electical drawout type(EOD) having overload, short circuit and earth fault protection alongwith LED display.

(D) METAL ACOUSTIC: Anti-vibration pads for mounting engine, alternator assembly on the base frame/ plate. (E) BASE PLATE: Base Plate shall be made out of structural steel as per manufacturer's recommended design/ specifications.

(F) ACOUSTIC ENCLOSURE : Provision of an integral type approved/ certified acoustic enclosure weather proof, water proof and corrosion free, as per latest CPCB norms IV or latest, for the DG Sets to restrict the noise level to 75 db at one meter distance and temp rise within canopy shall not exceed 50 - 70 degree Celsius. It shall be made of minimum 16 SWG CRCA MS Sheet with powder coated finish on outside and provided with non igniting fire retardant foam as acoustic material. There shall be four hinged doors out of which one shall be with a glass window. All as directed and shall include as under:-

(i) Silencer shall be absorption type, non resistance, residential and exhaust pipe covered with asbestos roof extending to about 2 meters outside the acoustic enclosures. (ii) Internal wiring with PVC copper conductor cables, IS - 694 marked, FRLSH in conduit and fluorescent lamp fittings. (iii) Fuel tank of capacity sufficient to continously run the DG set atleast upto 8 hours made out of CRCA sheet as per manufacturer's recommended design/ specification, duly powder coated and provided with float, gauge and fuel float switch - 01 Set.

Note: (i) DG set shall be "pre-commissioned" by rep of Accepting Officer within overall cost quoted. Fuel for "Pre-commissioned" test shall be arranged by contractor. (ii) Before delivery/dispatch of DG Set(s) from approved manufacturing unit, the contractor shall give notice to the GE and accepting officer before one month for consideration by accepting officer and detailing the representative to witness the factor testing (routine tests as per IS) at factory premises. Necessary arrangement & tie up the manufacturer etc, the test will be of contractor’s responsibility without any extra cost to the Govt. (iii) Suitable capacity battery maintenace free as per OEM recommendation shall be provided within overall quoted rates. (iv) If any modification are required on existing main panel, it will be deemed in contract quoted rate. (v) Drawing for AMF panel and LT supply shall be approved by GE before placement of order and installation. (vi) The quoted rate shall be deemed to be inclusive of 12 Hrs test run at site including of 1 Hrs 110% load in presence of officer detailed by Accepting Officer, all arrangement to made by the contractor for tests including fuel complete.

M&L for construction of plateform for 400 KVA DG Set, by constructing 400 mm thick in Concrete mix RCC 1:2:4 Block of approximate size 5600 mm X 2200 mm with nominal reinforcement type B-1 (using 20 mm thick graded stone aggregates) as in flooring and 230 mm thick brick wall masonry in cement mortar 1:4 all around the PCC Block along the perimeter leaving a gap of 75 mm between PCC block and brick wall masonry and filling the gap with sand from all sides over and including 50 mm thick PCC 1:4:8 type D-2 (using 40 mm thick graded stone aggregates) as in sub base including 15 mm thick plastering on the exposed brick wall masonry in cement mortar 1:4 and applying two coats of white wash on newly plastered surface complete all as specified and as directed by Engineer-in-Charge.

Note:(i) Size of the plateform for DG Set mentioned above is approximate, Final size of plateform shall be as per the recommendtion of OEM and as directed by Engineer-in-charge. (ii) necessary Excavation if required shall deemed to be included in the rate quoted.

M&L for earthing complete with galvanized iron earth plate electrode 600 mm x 600 mm x 6 mm thick buried directly in ground (earth pit not less than 2.25 meters deep below ground level) with top edge of the plate not less than 1.5 meters below normal ground level connecting to GI strip 32 x 6 mm as earthing lead by means of bolts, nuts, check nuts and washers of galvanized iron or steel and earth wire protected by 50mm dia GI pipe medium grade earth plate surrounded by alternate layer of coal dust and common solt 15 cm thik each layer all as per electrical plate and connected to pole structure/ panel board/ earthing test point all as shown in electrical plate No. 3 of SSR Part-I (2009) and testing on completion complete all as specified and directed.

Note :- The unit rate quoted shall also include for excavation, earth work in any type of soil, plain cement concrete 1:3:6 mix, Type C-1 pit, 40mm thick RCC 1:2:4 mix type B-1 cover reinforced with 8 mm dia TMT bars @ 150mm C/C both ways, GI funnel with watering pipe, wire mesh, protection pipe, earth strip with protection pipe upto 7.50 m long.

Supply and fixing GI strip 32 mm x 6 mm buried in ground complete all as specified and as diected by Engineer-in-Charge.

Supply and fixing GI pipe 'light grade' of size 40 mm dia for strip protection complete all as specified and directed by Engineer-in-Charge.

Supplying, laying, jointing and testing LT XLPE insulated cable, 1100 volt grade heavy duty armoured aluminium conductor including cable glands, cable lugs etc to suit the cable size, laid in trenches, fixed along the poles bare or through GI pipe laid under floor/ road, concealed in walls, encased in GI pipe etc complete of size 120 Sqmm single core complete all as specified an as directed by engineer-in-charge. (Note:- Earthwork shall be measured and paid separately)

Excavation in trenches for foundations, laying, erecting of poles etc, in any type of soil, not exceeding 1.5 metre in depth and not exceeding 1.5 metre in width and getting out, complete all as specified and as directed by Engineer-in-Charge. Note:- Nothing extra will be paid to the contractor in this account if hard or rocky soil is encoutered during the execution.

Returning, filling in trenches including spreading, leveling, watering and well ramming in layers not exceeding 25 cm complete all as specified and as directed by Engineer-in-Charge.

Removing surplus excavated material to a distance not exc 50 metre and depositing where directed at a level not exceeding 1.5 metre above the starting point complete all as specified and as directed by Engineer-in-Charge.

M&L for sand cushioning for underground cable 8 cm below and 15 cm above the cable with clean dry river sand in trenches including spreading, levelling etc. complete all as specified and as directed by Engineer-in-Charge. Note: Punned thickness only will be measured for the purpose of payment.

Supply and laying reinforced precast concrete cable cover class LV type-1, flat, size 250 mm x 150 mm x 40 mm as protection to LT cable complete all as specified and as directed by Engineer-in-Charge.

chahalbuilders (BID ID -3266645)

SHARMA ELECTRICAL ENGINEERS (BID ID -3267252)

BANSAL ENGINEERING (BID ID -3267412)

UNITED ENGINEERING CORPORATION (BID ID -3267516)

DIVYA ELECTRIC CORPOORATION (BID ID -3265520)

Vijaypower Generators Limited (BID ID -3267545)

R D Bansal (BID ID -3267490)