PROVISION OF MOBILE GENERATING SET AT NSTL VISAKHAPATNAM

Supply, installation, testing & commissioning of outdoor type 500 KVA, silent type diesel generating set as per CPCB IV+ or better norms longwith having primer power rating of KVA as below, 415 volts at 1500 RPM, 0.8 lagging power factor at 415 V suitable for 60 Hz, 3 phase system & for 0.85 load factor including testing of factory and site with fuel, load for test and other necessary arrangements complete as per CPWD specification should have QR code which should contain drawing, test report OEM manual, Geo-Tag of manufacturing location, rating plate as per relevant IS code etc and consisting of the following

(A) Diesel Engine. Turbocharged diesel engine four stroke water cooled, multi cylinder, dynamically balanced fly wheel, electric start of suitable BHP at 1500 RPM suitable for above output of alternator at 40 Degree C, 50% RH & at 1000 meter ASL, capable of taking 10% over loading for one hour after 12 hours of continuous operation. The engine will be with electronic governor, dry type air filter with service indicator, first filling of engine fuel (after commissioning) lubricating oil, coolant and other consumables complete with all the required accessories, the electronic governor shall be as per ISO 8528. The engine shall comply to the latest CPCB norms (CPC IV+ or better) and conforming to BS 5514, BS 649, IS 10000, IS 10002, IS 13018 and as per CPWD specification. (B) Engine mounted instrument panel fitter 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 and voltage indication. (vi) RPM indication. (vii) Over speed indication. (viii) Low lubrication oil trip indication. (ix) Engine running hours indication. (x) Fuel leve. (C) Alternator Synchronous alternator rated of appropriate KVA, 415 volts at 1500 RPM, 3 phase 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 screen protected drip proof (SPDP) enclosure IP23, brushless, continuous duty, dynamically balanced rotor, capable of taking 10% over loading for one hour after 12 hours of continuous operation, self cooled, self-excited and self-regulated through AVR conforming to IS-13364 (Part-2) IS:4722/BS 2613 suitable for tropical conditions and with class-H insulation.

(d) Base Frame & Foundation Both the engine and alternator shall be mounted on suitable base frame made of MS channel with mounted moveable trolly and vibration isolation arrangement as per recommendations of manufacturer and direction for GE/Engineer-in-Charge. (e) Fuel Tank Daily service fuel tank of suitable liters capacity as per CPWD specifications, fabricated out of 3mm thick KS sheet complete with all standard accessories and fuel piping between fuel tank and diesel engine with MS class 'C' pipes of suitable dia comlete with valves, levels indications & accessories as required as per specifications. (f) Exhaust System Dry exhaust manifold with hospital type exhaust silencer and catalytic convertor.

(g) Starting system 12V/24V DC starting system comprising of starter motors, voltage regulator and arrangement for initial excitation complete with suitable numbers of batteries (180 AH capacity lead acid SMF type) as required as per specifications. The battery shall be housed inside the acoustic enclosure of DG set. (h) Acoustic and weather proof enclosure with arrangement for fresh air intake for cooling of the engine & alternator, extraction, discharging hot air into the atmosphere and the temperature rise inside the enclosure, noise level outside enclosure. The acoustic enclosure should be suitable for cable connection/connection through bus-trunking. Such arrangements on acoustic enclosure should be water proof & dust proof conforming to IP-65 protection. The enclosures shall be as per CPCB IV + or better norms etc and as per CPWD specifications.

(j) AMF Panel : Free standing floor mounted IP 42 automatic mains failure control panel including auto by-pass, suitable for KVA as mentioned here in before for silent type DG set complete with relay, timers, set of CTs for metering & protection and energy analyser to indicate currents, phase and line voltages, frequency, power factor, KWH, Kilo Volt Ampere Reative Hour (KVARH), KVA (Phase & total), KW & provision for overload, short circuit, restricted earth fault, under frequency, power (aluminium) and control (copper) cabling of suitable size upto 15 meter between AMF panel, LT panel and DG set including connection interconnection etc as required all complete and interlocking and communication/ethernet/RS485/SNMP port open protocol for BMS integration including suitable software, the panel shall be of DG set OEM make etc as per approvd by Engineering-in-Charge and including the following :-

(i) Suitable number and appropriate capacity 4 pole motorised electrically/operated draw cut with cradle type 3 position ACB/MCCB with electronic release for O/C & E/F and shunt trip. (ii) Auto/manual/test/off selector switch. (iii) Protection for under and over voltage phase reversal (02 Nos over voltage relay, 02 Nos reverse power relay and 02 Nos under voltage relay). (iv) Thre sets of current transformers 15P 10 accuracy for protection and 15VA class-I for metering. (v) Energy analyser unit to indicate current, voltage (L-N & L-L), kW, kVA (Phase & total), frequency, KWH, PF. (vi) LED indicating lamps for load on mains and load on set. (vii) Fuse/MCB for instruments. (viii) Battery charger, complete with transformer/rectifier, DC, voltmeter and ammeter, selector switch for trickls, off and boost and current adjustment. (ix) Main supply failure monitor. (x) Supply failure timer. (xi) Restoration timer.

(xii) Control unit with three impulse automatic engine start/stop and failure to start lockout. (xiii) Impulse counter with locking and reset facility. (xiv) ON/OFF/Control circuit switch with indicator. (xv) Audio/video annunciation for :- (a) High water temperature. (b) Low lubricating oil pressure. (c) Enginer over speed. (d) Engine fails to start. (e) Full load/maximum load warning. (xvi) Protection for over/under frequency, loss of AC sensing, over current, unbalancing load with suitable number of relays and accessories. (xvii) Maintenance notification based on Engine Run Hour & due date.

(xviii) Load management through PLC to achieve auto opening and closing of incomer breakers, bus coupler switching of essential panel, interlocking providing signal to AMF panel for load status and AMF shall give command to DG set to auto start/auto stop depending upon load satus and requirement etc and necessary hardware and software required to perform the operation shall be provided by the contractor including all control wiring. Notes:- (a) unit rate quoted shall deem to be inclusive of constructing the complete foundation of DG sets complete all as per manufacturers instructions and as directed. (b) unit rate quoted shall deem to be inclusive of complete testing and commissioning of DG sets, All requirements/materials required for testing (c) unit rate quoted shall deem to be inclusive for First fill engine oil ,lube oil, coolant and diesel required for during commissioning and testing.

Supply ,testing of four wheel trolley suitable for mounting of 500 KVA DG Set, made of high tensile MS section. The Size of trolley 6.0 mtr x 3.0 mtr (+/- 10%). Trolley should have 4 wheels complete and the front two wheel will be rotated upto 160 degree with up/down movable tow hook. Tyre should be of suitable size and load capacity minimum 10 ton . Trolley to have parking and over run break, pulley, tow hook and leaf spring four sets & 2 nos axles. Super Structure of the trolley should be made of suitable size and top platform made of minimum 3 mm thick MS plate. Necessary arrangements for fixing of the DG set on top platform will be made suitably for 500 KVA DG set. Side support of MS angle minimum size100 mm x 100 mm x 10 mm will be provided based on the suitable size for fixing the DG set to avoid sliding. Reflective sticker both side of rear will also be provided for night movement. Necessary arrangements for MS cable drum on back side of the trolley. Minimum ground clearance should be 80 cm. Toolbox of size 100 cm x 50 cm and height 30 cm to be fitted at trolley floor and one set of spare wheel with tyre fitted with trailer complete all as specified and directed.