CA NO GE(U)/CHM-42/2025-26 AUGMENTATION OF STANDBY ELECTRIC SUPPLY TO AMSS SUB STN AND CONNECTED SINGLE LOC AT CHANDIMANDIR MIL STN

Amount

M&L for earthing complete with galvanized iron earth plate electrode 600mm x 600mm 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 32x6 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 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 C1 pit, 40mm thick RCC 1:2:4 mix type B1 cover reinforced with 8mm dia TMT bras @ 150mm C/C both ways, GI funnel with watering pipe, wire mesh, protection pipe, earth strip up to 7.50m long complete in addition to item No. 1(a) to (e) of preamble (Notes) under sub heading earthing, specified in SSR Part II

Supplying, installing, testing and commissioning of silent diesel engine driven silent generating set 320 KVA, six cylinder in line engine, 415 volts, 3 phase,4 wire ,50 Hz,Comprising of diesel engine alternator mounted and aligned on a common MS fabricated base frame with anti-vibration mounting pads complete with all standard accessories as specified with standard manual control panel, standard AMF panel and soundless composite acoustic enclousure canopy duly approved by CPCB IV+ norms of rating 320 KVA power factor 0.8 (lagging) and connection as per IE rules complying CPCB/Govt norms shall comprises and including the following:-

(a) ALTERNATOR: Standard design alternator conforming to IS 4722 & BS EN 60034-1 rated at 320 KVA net output at site after considering all derating factors, site conditions and at power factor 0.8, AC 3 phase, 4 wire 415 volts, 50 cycles, 1500 rpm, self excited, self regulated through an AVR screen protected, drip proof IP-23 enclosure, brushless design with hub and sealed ball/roller bearing, with winding on each pole faces, insulating class H, band of voltage regulation +/- 1% operated voltage from no load to full load and shall conforming to relevant IS/BS/IE Certifications and shall be in position to generate supply with frequency regulation within +/- 1% tolerance, revolving field type.

(B) DIESEL ENGINE: 320 KVA capacity diesel engine conforming to present CPCB IV+ norms suitable to above alternator, radiator cooled with coolant, to drive independently above alternator and after considering derating as per site conditions directly coupled to alternator through flexible coupling or multicylinder, multistroke, direct injection, cold starting, 1500 rpm, as per relevant IS/BS/IE within overload cap of 10% for 1 hour in any 12 hours continuous running complete with standard accessories all as specified and required for safe running and operation. salient features of accessories shall be as under:-

(i) Fly wheel & fly wheel housing (ii)Air cleaner dry type (iii) Fuel filter (iv) Fuel injection system including injection pump, solenoid switch nozzle as per manufacturer's specification (v) Lubricating oil filter, bypass filter, oil cooler (vi) Lubricating oil pump (vii) Turbo charger (viii) Radiator cooled. (ix) 12 volts starting system consisting of batteries 02 Nos of capacity 180 Ah, battery connections with copper leads and with lugs of adequate size, initial charging of batteries, battery charger/ generator with regulator, starter motor, starter gear, start and stop push buttons, ignition key and switch.

(x) Residential type exhaust silencer complete with exhaust pipe of suitable size upto outside the acoustic enclosure, all covered with glass wool wrapped with aluminium foil of 28 SWG adequate to create draft for safe exhaust without transferring vibrations to building/wall, flexible exhaust pipe complete. (xi) Microprocessor control electronic metering and module (ECPG) for indication of battery voltage, oil pressure, water pump, engine rpm, hour meter and protection against low oil pressure, high water temperature and over speed of engine incl. electronic governing as per ISO 8528 part-V. (xii) Battery charging indicator (xiii) Radiator cooling system comprising of radiator, raditor fan belt, water pump with belts, thermostat. (xiv) Fuel hoses.

(xv) Fuel service tank of minimum 570 Ltr capacity fabricated from MS sheet with draw-out/drag-out facility, inlet outlet connections air vent tap, level indicator, MS fuel piping from tank to engine with valves, unions, reducers, flexible hose connections, mounting pedestals, fuel filters incl all as per manufacturer's design. (xvi) Air intake system (xvii) Separate fuel tank or pay tank made out of 2 mm thick CRCA sheet of suitable capacity not less than 570 litres with level indicator, stop cock, drain plug/valve, breather inlet and outlet connections and all fuel supply lines as required at site and as per manufacturers instructions including return and overflow as well as fuel filling arrangements with piping. (xviii)Common base frame of sturdy design suitable for antivibration mounting and permanent concrete foundation for mounting engine and alternator as per manufacturers instructions. (xix) First fill of lube oil, coolant & urea.

(c) CONTROL PANEL: Control panel shall be indoor cubical type made out of suitable thick CRCA sheet complete factory made dust and vermin proof, t otally enclosed with front opening of 415V 3 phase, 4 wire system AC 50 Hz, having Aluminium busbar of capacity suitable for 110% full load of generating set with standard accessories as per manufacturers instructions (d) ACOUSTIC ENCLOSURE: The entire generator prime mover, alternator, fuel tank and DG set control panel should be housed in a sound proof acoustic enclosure made of CRCA sheets with UV resistant powder coated and a structural/sheet metal base frame. The walls of the enclosure should be insulated with high quality noise absorbent and fire-retardant grade acoustic insulation material complying to IS 8183 for better sound attenuation so as to comply with the 75 dBA at 1 meter sound levels at 75% load under free field conditions as specified by MOEF/CPCB. The enclosure should be provided with the following:- (i) Suitable doors on all sides to enter in to the container for easy maintenance. All doors shall be provided with locks and handles for opening/ closing of doors. (ii) Suitable internal lighting to carry out easy inspection and maintenance. (iii) Air Inlet louvers designed to operate at rated load. (iv) Fluid drains for lube oil and fuel. (v) Fuel filling point with locking arrangement. (vi) Push button for emergency stop

(e) 2.5mm thick electrical insulating safety mat confirming to IS 15652-2006, working Volt 11KV (f) AMF Panel: The AMF panel shall be cubicle-type, free standing floor mounted construction and designed to be totally enclosed, dust-proof, damp-proof and vermin-proof. For outdoor installation, the outer shell of the panel shall be made out of 3mm thick CRCA sheet and provided with a weatherproof canopy and the degree of protection shall be IP 54. The panel shall be installed on a properly constructed RCC foundation pedestal of minimum 1000mm × 800mm size and 400-500 mm height above finished ground level. The AMF Panel should be equipped with the following control gear and components:- i) Power contactor- 4 pole of 630 Amp current rating with thermal overload relay - 02 Nos (for alternator and mains) ii) MCB of suitable current rating for short circuit protection iii) Microprocessor based AMF module incorporating functions:- - Supply failure timer - Restoration timer - 3 Impulse automatic engine start/ stop logic - Mains/ Generator Voltage & Frequency sensing iv) Aluminium bus bars of suitable capacity with incoming/ outgoing terminals

Note: (a) The capacity of generator set shall be net after all de-rating factors as per relevant design. (b) 5 Years Comprehensive Annual Maintenance Package by OEM/Manufacturer including consumables and unlimited visits by service engineer deemed to be included in quoted rates. Rs 50,000.00 shall be retained for a period of 05 years for annual maintenance from the certified date of completion. Contractor may submit the FDR for the said amount in favour of Garrison Engineer. (c) Complete DG set Shall be Procured directly from OEMs/ Integrator. (d) The foundation shall be provided at site as per recommandation of manufacturers design & drawing and cost for the same is deemed to be included in unit rate of above item.

(e) On successful installation, the DG set shall be tested as specified below :- Phase-I : No-load test for 01 hour in the presence of Engineer-in-Charge. Phase-II : Load test for 12 hours continuously (at 25% of full load for first one hour, 50% of full load for second one hour, 75% of full load for third one hour, 100% load for next 08 hours and 110% of full load for last one hour). Resistive type load bank or Water Load, Fuel and testing instruments as required for load testing shall be arranged by the contractor and cost of the same shall deemed to be included in the quoted rate. Load test shall be carried out in the presence of testing officer nominated by accepting officer or IEM.

The Rahul Vig (BID ID -3375849)

shiv shanker enterprises (BID ID -3375734)

chahalbuilders (BID ID -3367645)

PAUL REFRIGERATION (BID ID -3367517)