PROVISION OF STAND BY POWER SUPPLY TO LIFTS OF DRUVA (P-20) AND EKLAVYA (P-39) BUILDING ENC(O) MESS COMPLEX UNDER AGE E/M NO-I OF GE (U-I) VISAKHAPATNAM

Supply, installing, testing and commissioning of 58.5 KVA Diesel Engine driven Generating set, silent type with alternator output Voltage 415 Volts +/- 1% at set value of 415 V at a frequency 50HZ +/-0.5% with suitable standard control panel, all mounted in acoustic enclosure and AMF panel as per manufacturers design and specification as per approved CPCB-04 norms OR latest norms during execution confirming to the detailed specifications appended below and (1.01 & 1.02) :- (a) General: Suitable four stroke compressed ignition, radiator water cooled, Turbocharged aspiration, continuous duty with 10% overload capacity for any one hour in 12 hours running, 50°C intake air temperature, CPCB-04 approved Engine developing Suitable BHP at 1500 RPM coupled to alternator mounted on Channel Iron base frame with in-built fuel tank of OEM recommended capacity. The prime mover provided should be as per IS specifications. (b) Air intake system: Should comprise of dry type intake air filter mounted on engine, one in number vacuum indicator mounted on intake piping. (c) Exhaust System: Should comprise of one exhaust manifold, dry type, mounted on engine, one exhaust silencer which should be positioned in such a way that the exhaust gas is not sucked by the fan on the radiator, thereby affecting the cooling system. The silencer should cater to the noise level tolerance prescribed in the relevant IS/BS. The silencer should be provided with flaps with a provision so that it will open only when the generator is running. The complete exhaust system shall be properly supported so that entire lot of the exhaust system shall not fall on the DG Set. (Contd...)

(d) Fuel System: Should comprise of disposal type element fuel filter, pressure type fuel pump mounted on engine, non return check valve in fuel supply and drain lines, wire braided hose between filter and pump, fuel system with suitable capacity electronic governor and engine mounted actuator. The fuel tank must have proper locking arrangement with level indicator and to be integrated with base frame. (e) Cooling System: Should comprise of radiator designed and tested for 50°C ambient temperature with 7 PSI pressure cap mounted on base rail. The thermostat installed in the engine coolant outlet, fresh water pump mounted on engine, fan and fan hub mounted on engine. A reservoir of 50% of radiator capacity to replenish coolant by gravity (as and when required) is also to be provided. (f) Lubricating System: Should comprise of lubricating oil sump mounted on engine, gear driven lub oil pump mounted on engine, lubricating oil cooler-fresh water cooled integral with engine cool out circuit mounted on engine, oil filter lubricating with cap and lubricating oil dip stick for oil level check mounted on engine. The system should be capable of feeding lube oil to the main end & large end bearings, cam shaft, valve rocker gear and all moving parts. (g) Starting System: Should comprise of suitable voltage DC electrical starter mounted on engine, with suitable maintenance free batteries-2 Nos of capacity 12 V DC with suitable AH to be mounted in trays (having rubber insulation) on the main frame or the capacity as per specification of manufacturer. It should have the provision to charge the battery from external sources during static condition and while running of the generator. (h) AC Generator: The generator shall be horizontal and foot mounted, minimum 58.5 KVA, 415 Volts, 3 phase, 4 wire, 0.8 PF, 50 HZ, self excited, self regulated, brushless AC generator, suitable for an ambient temperature of 50° C with IP-23 enclosure class H insulation and temperature rise limited to class H as per following technical details:- (i) Type, Brush less AC Generators (ii) Output rating minimum : 58.5 KVA (iii) Output Voltage : 415 ±.5% under all loading conditions. (iv) Output frequency : 50Hz ±0.5% up to 0.8 lagging. (v) No of Phases : 3 phase with 01 Neutral (4 wire) (vi) Mounting : Horizontal floor mounted. (vii) Enclosure : Minimum IP-23/Drip proof and screen protected. NOTE: Following shall deemed to be included in unit rate quoted by contractor against this item:- (i) Suitable size cement concrete foundation platform of canopy base with height as required at site to mount the generator as per manufacturer's instructions / recommendations is deemed to be included in the quoted rate. (ii) Disconnecting existing cables, from existing panels and connecting cables, cables glands, cable lugs to new panel complete with all necessary accessories. (Contd...)

(Contd...) (iii) Installing on the foundation, connecting fuel lines, cable etc. (iv) Testing and commissioning complete. (v) The cost of control cables from engine Control panel to AMF panel shall be deemed to be included in the cost quoted. (j) BASE FRAME: Shall be stand by and fabricated with CRCA sheet metal which shall be suitable to mount the engine, alternator and radiator, channel width of base frame shall be adequate to accommodate anti-vibration pads. (k) CONTROL PANEL: Shall be indoor type manufactured with 14/16 guage CRCA sheet and shall be powder coated for weather proof and long lasting finish consisting of microprocessor power command controller, Aluminium busbars with suitable capacity with incoming/outgoing terminals, indicating lamps for 'Load ON' and 'Set Running', instrument fuses duly wired and ferruled, MCCB of suitable rating with overload and short circuit protections etc. complete all as specified and directed. (l) AMF PANEL: Shall be indoor type LT 415 Volts 3 phase 50 Hz, Floor mounted sheet steel enclosed cubical type panel made out of 2mm thick CRCA sheet for body & 1.6 mm thick for partitions consisting of suitable rated contactors, 4 Pole 25 KA MCCB-2 Nos of 160 Amps (for Mains/DG), AMF Relay, Volt meter, ammeter with selector switches, Multifunctional Energy meter, Generator protection relay of L&T make, CTs and 3 Phase indicating lamps, timers etc all as per latest engineering practices. (m) Accessories:- (i) Periodical maintenance tools as per manufacturer (OEM). (ii) Operational, spare parts and installation guidelines and catalogue (n) Acoustic Enclosure :- Specially designed to meet CPCB norms 75dBA @ 1 mtr at 75% load under free field conditions.The Acoustic enclosure is made of CRCA sheets and a structural/sheet metal base with high quality noise absorbent and fire-retardant grade acoustic insulation material (P.U.Foam) complying to IS 8183 with two point lifting handles (a) Internal Lighting: Tube lights with protective mesh around it to be fitted inside the container for proper illumination (b) Doors: The enclosure will be provided with suitable doors on the side and rear to enter the enclosure during operation and maintenance. All doors will be provided with lock and handles for opening/closing the doors, retainers for holding the panel door (p) Painting Scheme : All as per manufacturers specifications (q) Lifting/ Transportation arrangements :- Container with suitable corners will be provided to lift the DG set along with container. Container should be suitable for road / rail / sea transportation. (r) Trials:-Trials on site should be given as per load tests prescribed and all functional trials should be shown. Note: (i) The Engine, alternator, Control Panel, Acoustic enclosure shall be integrated unit sourced from OEM only as per Makes given above. (ii) AMF Panel shall be installed separately inside the sub-station as directed by Engr-in-Charge.

M&L earthing complete with galvanised steel earth plate electrode of size 600 x 600 x 6 mm thick buried directly in ground in vertical position (earth pit not less than 2.25 m deep below the normal ground level) with top edge of the earth plate not less than 1.5 m below normal ground level, connected to earth lead of galvanised iron strip 32 x 6 mm by means of bolts, nuts, check nuts and washers of galvanised iron or steel, all as shown in electrical plate No. 3 connected to earthing test point complete all as specified and directed. Note:- The unit rate shall also include for earth work in any type of soil, PCC 1:3:6 type C1 chamber, RCC 1:1.5:3, type A1 cover slab, 50 mm thick reinforced with 8 mm dia TMT bar @ 140 mm C/C both ways, 10 mm dia plain bar lifting handle embedded in cover slab, Main earthing lead from earth electrode to test point upto 7.5 m length, 20 mm bore medium grade GI watering pipe, 40 mm bore GI light grade earth lead protection pipe, funnel, wire mesh, copper lugs, charcoal and common salt in alternate layer etc.

Supply, laying, commissioning & testing of LT XLPE insulated, galvanized iron srip armoured heavy duty electric cable with Aluminium conductor, 1100 volts grade, cross sectional area 95 Sqmm x 3.5 Core, laid in trenches / duct / on pole / wall complete all as specified and directed.

All as per Sl item No. 3.00 herein before but cross sectional area 25 Sqmm x 3.5 Core

S&F cubical type LT feeder panel board, outdoor type, factory made, made out of 3.15 mm thick CRCA steel sheet and including MS angle iron 50 x 50 x 6 mm frame work, legs 0.6 m long, MC 100 channel base, totally enclosed, dust & vermin proof using neoprene rubber gasket (IP-54), double leaf door shutter in front side and rear side fixed with hinges and having handles on each gate including necessary locking arrangement in both front and rear door, with four side projected slanting roof, provided with louvers for ventilation / heat dissipation, duly powder coated by seven tank treatment process and including mounting on PCC platform made out of PCC (1:3:6), C2 type, 150 mm thick (100 mm below & 50 mm above GL), with 100 mm offsets all round the panel board having Aluminium Busbar as specified and including necessary earth work. (Contd...)

The panel board shall be suitable for operation on AC 415 Volt, 3 Phase, 50 Hz, 4 wire system and shall have aluminium bus bar as specified with colour insulating tape / sleeves mounted on suitable size "F" class, non hygroscopic, non combustible insulators, provision for fixing MCCBs / MCBs, necessary inter-connections with bus bar / strip with colour code insulation, including LED indicating lamps (R, Y, B), digital voltmeter with CT / PT & ammeter of suitable capacity with selector switches, provision of cable entry / exit provided in bottom, connections of all outgoing / incoming, new copper wires of required size (minimum 2.5 sqmm) with following accessories complete all as specified and directed:- Incoming :- (i) MCCB 4 pole 160 Amp, 25 KA, Ics = 100%, Thermal and magnetic release type - 02 No's (ii) 160 Amp Change over switch - 01 No Outgoing :- (i) MCCB 4 pole 63 Amp, 16 KA, Ics = 100%, Adjustable thermal and magnetic release type - 05 No's (ii) Digital Intelligent Panel meter to measure voltage, current, frequency, power factor, kWH etc., with all connected CT's - 01 No (iii) Aluminium Busbar of 300 Amp incl PVC sleeves for 3 Phase with neutral supply - 01 Set (iv) LED indicating lamp with colour Red, Yellow, Blue - 01 Set

Excavation in trenches, not exc 1.5 m wide and not exc 1.5 m in depth; for foundation, etc. or for shafts, wells, cesspits, manholes, pier holes, laying cables etc. n exc 10 sq m on plan and n exc 1.5 m in depth and getting out in soft / loose soil complete all as specified and directed.

Returning and filling including spreading, levelling, watering and well ramming in layers not exceeding 25 cm thick complete all as specified and as directed.