PROVN OF 30 kVA GEN SET IN COLD AND COOL ROOM (COY) ASC SUP TYPE B AT SUPPLY DEPOT NASIRABAD UNDER GE NASIRABAD

Amount

Supply, installation, testing and commissioning of silent acoustic enclosed diesel engine driven generating set of 30 KVA/24 KW capacity with Auto Main Failure Panel (AMF Panel) comprising of multi cylinder (3/4), four stroke, internal combustion engine suitable to develop not less than 32 BHP at 1500 RPM under NTP condition and as per ISO-10002, ISO-3046-1/2002, BS 5514-1 coupled with synchronous brushless AC alternator of 30 KVA rating, 415 Volt 0.8 power factor (lag), 50 Hz, 3 phase, 4 wire suitable for continuous operation at 1500 RPM manufactured as per IS 13364-2, IS-4722, BS 5000 Part 99, mounted on common base frame over the antivibration pads including all other accessories, fittings as per third amendment rules, 2022 latest CPCB IV norms guidelines and noise level less than 75db at 01 (One) meter from DG set as per recommendations and consisting of the following: (A) DIESEL ENGINE: The diesel engine shall be four stroke, multicylinder (minimum 3 cylinder), water cooled, turbocharged able to develop not less than 32 BHP power at 1500 RPM under NTP condition, manufactured and confirming to ISO: 3046, BS 5514, IS 10002 suitable for alternator of 30 KVA/ 24 KW with 10% over loading for one hour in twelve hours duration and having following technical specifications: - (i) AIR INTAKE SYSTEM: - Comprising of Air intake manifold, dry type air cleaner vacuum indicator and other accessories as per OEM literature/technical brochure. (ii) EXHAUST SYSTEM:- Comprising of exhaust manifold aluminium cladding material over residential silencer hospital grade/Bellows, MS pipe (Class B) of suitable bore to increase the exhaust system height with bends, flanges, thermal insulation on pipe with mineral wool 50 mm thick, wire mesh and 26 gauge aluminium cladding over MS pipe, MS pipe supports, stainless steel flexible connections optimised turbocharger alongwith other essential accessories as specified/prescribed by OEM as per their technical literature. (iii) COOLANT SYSTEM: -Comprising of centrifugal, gear driven, water pump assembly coupled with engine, Radiator of adequate size, copper circulating tube fins etc mounted over suitable rubber pads, coolant additive concentrate, adequate piping complete in all respect alongwith other accessories as specified /prescribed by OEM/manufacturer.

item 1.00 contd/-.... (iv) FUEL SYSTEM: - Comprising of High-Pressure Common Rail (HPCR), fuel injection system with electronic governor, solenoid coil, dual (primary and secondary) fuel filter, connected piping and all other essential accessories as specified/prescribed by OEM/Manufacturer. (v) LUBRACTING SYSTEM: - Comprising of Lub oil sump of adequate capacity, full flow lube oil filter, plate type lube oil cooler, engine mounted lub oil pump and other relevant accessories as specified/prescribed by OEM/Manufacturer. (vi) STARTING SYSTEM: - Comprising of 12 Volt 80 AH, heavy duty maintenance free battery with connecting copper battery leads of suitable size and length with thimbles and lugs. (vii) FUEL TANK: - In built service fuel tank of adequate capacity to run DG Set for minimum 12 Hrs on full load comprising of fuel level indicator, fuel piping for supply, over flow of diesel, drain valve air vent and all other essential accessories as specified/prescribed by OEM/Manufacturer. Fuel tank shall be fabricated from sheet metal not less 2mm thick and shall be placed inside the acoustic enclosure under the base frame. (B) ALTERNATOR: - Synchronous, brushless type AC alternator of rating 30 KVA/24 KW, 415 Volts at 0.8 power factor (lag), 50 Hz, 3 phase, 4 wire for continuous operation at 1500 RPM at full load with 10% load for one hour manufactured conforming to IS: 4722, BS-5000 Part 99. The alternator shall be self-excited through an automatic voltage regulator (AVR) with + 1 % voltage regulation in static condition having following: - (a) Cable terminal box with suitable size of glands, earth terminal. (b) Copper cable leads of suitable size from cable terminal base to control panel (c) Permanent lubricated sealed bearing. (d) IP 23 protection with `H' class insulation of winding. (e) Temperature sensors to limit the alternator temperature upto `H' class insulation level (f) Efficiency of alternator at full load shall be more than 90%. (g) Devices /sensors to protect the alternator from internal faults like under voltage, over voltage, over load, under low frequency, short circuit protection, against earth fault, line fault, phase fault, harmonic distortion etc.

item 1.00 contd/-.... (C) MICROPROCESSOR BASED DG SET CONTROL PANEL: - (a) Control panel manufactured with 14 gauge CRCA sheet, powder coated, weather proof consisting of microprocessor based controller, copper bus bar of suitable capacity with incoming and outgoing terminals as per OEM, indicating lamps, instrument fuses duly wired and ferruled, MCCB of suitable rating with over load & short circuit protection, necessary CTs, minor accessories etc. complete compatible for remote monitoring and data logging with operator interface to the DG set, digital voltage regulation of ±1.0 for any load between no load to full load, digital speed governing and generator set monitoring/ protective function as under: (i) Control: (a) Off/ Manual/ Auto Control Switch (b) Emergency stop (c) Manual run/ Stop control switch (d) Panel lamp/ Lamp test control switch (e)Operator adjustment for time delay Start/Stop & alternator voltage/frequency (ii) Metering engine: (a) Starting battery voltage (b) Lube oil pressure (c) Engine coolant temperature (d) Engine speed (iii) Data logs: (a) Engine run time, controller on time, number of runs and number of starts attempts (iv) Metering Electrical: (a) Current (b) Voltage (c) Frequency (d) KVA (v) Protection/ warning for engine:(a) Over speed shutdown (b) Low lube oil pressure warning /shutdown (c) High coolant temperature warning/ shutdown (d) Low coolant temperature warning (e) Weak battery warning (f) Over crank shutdown (vi) Cranking lockout: (a) This function will not allow the starter to engage when engine is running (b) Sensor failure indication (vii) Protection/ warning for alternator: (a) Over current warning/ shutdown (b) High/Low voltage shutdown (c) Under/over frequency shutdown/warning (d) Excitation fault (Loss of voltage sensing input to control shutdown) (e) Field overload shutdown

item 1.00 contd/-.... (b) The microprocessor-based DG set controller is provided with monitoring metering and control system with LED back list LCD display with soft switches showing the following parameters: (i) Engine metering-Dispressure, coolant temperature, battery voltage, engine speed. (ii) AC alternator metering-L-L Volt & L-N Volt, current, Volt-Amp, frequency. (iii) Engine protection: Low lube oil pressure, high/low coolant temperature, over speed, battery over/under Volts, sensor failure. (iv) AC alternator protection: Over/under Volt, over/under frequency, over current, short circuit & loss of AC sensing. (v) Data logging: Engine hours, control hours, engine starts and ID recent fault codes. (D) ACOUSTIC ENCLOSURE: - Silent DG Set acoustic enclosure should be of modular construction fabricated out of CRCA sheet of not less than 14 SWG and having following technical specifications. (a) The sheet metal components should be hot dipped in nine tanks pre-treated before powder coating. (b) The enclosure should be powder coated inside as well as outside with a special pure polyester-based powder. All nuts and bolts/external hardware should be made from stainless steel. (c) The doors handle should be of stainless steel and lockable. (d) Sound proofing of enclosure should be done with high quality rockwool/mineral wool confirming to IS 8183. (e) The rockwool should be further covered with fiber glass cloth and pre-fricated powder coated MS Sheet. (f) Specially designed alternators should be provided to control sound at air entry to the enclosure and exit from the enclosure. (g) Adequate ventilation including fixed ventilation should be provided to meet air requirement for internal combustion of engine and heat removed. (h) The Acoustic shall meet the stringent noise emission standard as laid down by ministry of Environment and forest/control pollution control based. The average sand emission/noise level from the DG Set enclosure shall be less than 75 dB at one meter under free field condition.

Supply, laying and testing cable XLPE insulated, screened PVC bedded, galvanised steel strip multi armoured, electric power cables (heavy duty) 1100 Volts grade with stranded aluminium conductor of cross sectional area 50 sqmm 3.5 core complete all as specified and directed.

Excavation in trenches n exc 1.5 mtr wide and n exc 1.5 mtr in depth and getting out in hard/ dense for laying cables, erection of poles complete all as specified.

Returning, filling in, including spreading, levelling, watering and well ramming in layers not exc 25 cm in soft/loose soil complete all as specified.

Removing excavated material (soils) not exeeding 50 mtr and depositing where directed at a level n-exc 1.5 mtr above the starting point.

M&L for sand cushioning to U/G cable in layers of 23cm thick (8 cm layer before laying the cable and 15 cm thick layer after laying the cable) in trenches and punning upto 18 cm complete all as specified and directed. Note :- Only punned layer of sand shall be measured and paid to the contractor.

Supplying and laying un-reinforced precast concrete cable cover , class LV, type 1 flat size 250 mm x150 mmX 40 mm and abutting each other with gap between adjacent precast concrete cable cover not exceeding 10 mm over underground cable for protection complete all as specified and directed.

M & L for earthing complete with galvanised steel plate earth electrode 600 mm x 600 mm x 6 mm thick, buried directly in ground (earth pit not less than 2.25 metres deep below ground level) with top edge of the plate not less than 1.5 metres below normal ground level, connected to earthing lead of 32 x 6 mm galvanised mild steel strip by means of bolts, nuts, check nuts and washers of galvanised iron from earth plate to test point upto 7.5 metre including all as shown in electrical plate No 3 of SSR Part I (2009) including necessary concrete chamber in cement concrete M 15 (Nominal Mix) using 20 mm nominal size coarse aggregate, precast RCC cover slab in cement concrete M 15 (Nominal Mix) using 20 mm nominal size coarse aggregate of size 40 cm x 40 cm x 5 cm reinforced with 8 mm dia TMT bars @ 150 mm c/c both ways with one handle for lifting made out of 8 mm dia bar, GI funnel, GI wire mesh filter, 20 mm dia CPVC pipe schedule 40 grade for watering, 40 mm dia CPVC pipe schedule 40 grade for protection of earthing lead, charcoal or coke and salt in alternate layers including necessary excavation and earth work in any type of soil/strata and testing and making test report for record, complete all as specifed and as directed by the Engineer-in-charge.

Supply and fix of light grade Galvanised mild steel pipe 40 mm bore complete with all fittings, laid under roads, drain, paths, fixed to poles/ walls with suitable mild steel clamps, bolts, nuts and washers complete all as specified and directed as for cable proction. (Note:- Excavation & earth work shall be measured and paid for separately under appropriate item of this schedule)

M & L for walling random rubble masonary uncoursed well bonded bedded and solidly hearted and built in cement mortar 1:6 etc. complete all as specified.

M & L for rendring in cement mortar (1:6), 15 mm thick on other than fair of brick work/stone masonary surfaces finished even and smooth without using extra cement, complete all as and directed.

M & L of cement concerate type D-2, 1:4:8 graded 100 mm thick aggregate) complete all as and directed.

M & L of cement concerate type C-2, 1:3:6 (ditto) 100 mm thick aggregate) complete all as and directed.

KIRTIMAN ENTERPRISES (BID ID -3165700)