SPECIAL REPAIRS FOR REPLACEMENT OF 50 KVA DG SET AT AP ALGARAH UNDER GE 867 EWS

Amount

Supply install, testing and commissioning of automatic mains failure (AMF) silent Diesel Engine driven Generating set 415 volts, 62.5 KVA, three phase, 0.8 power factor, 50 Hz,1500 RPM, self excited, self regulated, AC generator installed including acoustic enclosure suitable for ambient condition at Pedong (WB) and confirming to condition under IS 10002/13364 Part-I 1992, BS 5514/5000 with followings :-. Note :- (i) The capacity of generator set shall be net after all due derating factors as per relevant IS/BS standard design. (ii) The quoted rate shall be deemed to be inclusive of first fill of oil and final successful acceptance test. (iii) The quoted rate shall be deemed to be inclusive of 12 hours test run at site as specified in particular specifications in presence of rep of accepting officer, all testing arrangement/equipment shall be made available by contractor for tests.

A. ALTERNATOR Standard desing alternator rated at 62.5 KVA/nearest higher available capacity at 0.8 (lag) power factor AC, three phase, 4 wire, 415 volts, 50 Hz, 1500 RPM, self excited, self regulated , screen protected, drip proof , bushless design with winding in pole faces, insulating class ‘H’ and voltage regulation of + 1% at rated voltage from no load to full load. The alternator shall be confirming to BS 5000, IS 13364 Part-I (1992) and shall be in position to generate supply with frequency regulation with within + 1% tolerance. The alternator shall be suitable for tropical climate and shall generally confirm to BS 2613/5000, IS-4722. (i) Insulation Class ‘H’. (ii) Temperature rise Class ‘H’. (iii) Excitation : Self-excited. (iv) Regulation performance : The voltage is kept constant with + 1% manual voltage adjustment within + 5%. (v) Frequency regulation + 1%.

B. DIESEL ENGINE :- Adequate capacity of diesel engine water cooled to drive independently above alternator and after considering derating as per site conditions after generating and reducing power consumed by accessories directly coupled through flexible coupling multi cylinder multi stroke direct injection, cold starting 1500 RPM, as per relevant IS/BS complete with standard accessories all as specified and required for safe handling and operation salient features of accessories shall as under :- (i) Fly wheel with housing. (ii) Cooling system – Moulded radiator with fan and belts. (iii) Cooling water pump : Centrifugal type belt driven. (iv) Exhaust System : Exhaust system complete with exhaust piping of suitable dia with MS pipe medium grade upto and outside the building, covered with asbestos rope and aluminium foil of 28 SWG complete with in the enclosure for safe exhaust without transforming vibration to the wall/enclosure : Turbo charger type Exhaust manifold Silencer, Residential type Bellows (v) Fuel system : Fuel injection system with fuel injectors, fuel injection solenoid switch controlled by governer electronic operated/(as recommended by OEM) for 1% speed/frequency regulation Fuel filter Fuel hoses (vi) Lub oil system :- Lubricating oil filter Lubrication oil pump

(vii) Air intake system :- Air intake manifold Air cleaner dry type (viii) Governer electronic (ix) Starting system- Electric self starter with and including battery charging alternator. (x) Batteries, Maintenance free, of capacity 12 V, 150 AH -01 No. Complete with copper conductor multistranded leads of suitable length from self starter to the battery terminals complete with initial charge and initial fill of electrolyte all as specified and directed. Starter gear ring Start and stop push button Ignition key/Switch Handling and operation : Salient features of accessories shall be as under :- Radiator with blower fan Corrosion inhibitor coolant Paper element filters for fuel , lub oil and by pass. Governer electronic controlled direct fuel injection system Fly wheel and fly wheel. (xi) Generator Mounting Panel – Comprising of all standard items as mentioned under this schedule or as per standard practice ignition key switch and start/stop arrangement, indications for Engine parameters, hour run meter, RPM meter, Engine oil pressure indicator, water/ coolent temperature indicator, Battery volt display. (xii) Safety controls :- Engine low lube oil pressure high water temperature and over speeding of engine.

(xiii) Coupling arrangements – Flexible coupling, fly wheel to suit flexible coupling. (xiv) Base Frame ;- Made out of ISMC of sturdy design made of MS channel with necessary reinforcement and predetermined holes. (xv) Fuel tank :- Daily service fuel tank made out of 3 mm thick (10 SWG) HR Sheet top and bottom with calibrated level indication arrangement, stop cock, drain plug, complete on a common base inside in the acoustic enclosure. (xvi) MS pipe line to and from the fuel tank to the DG set.

D CIVIL WORKS:- All civil works including PCC platform and related to foundations including of panel and equipments including making good of existing structure disturbed during installation and commissioning of genset. The depth of the foundation and PCC as recommended by the manufacturer (E) Rubber mating of LV grade 19 mm thick of suitable size chequered type ISI marked to be laid in front of control panel should be provided. Note :- The contractor shall arrange for artificial load for testing for final testing of DG set at site and the cost is deemed to be including in above offer. (F) Acoustic Enclosure : Manufactured by OEM suitable for 62.5 KVA DG Set. (i) NAL approved as per CPCB. (ii) It should be as per latest rules and regulations of Ministry of Environment and Forest and Pollution control board. (iii) The generating set batteries and control panel should be inside the enclosure. (iv) Fuel tank should be inside the enclosure. (v) Construction Details/specification are as follows :- (a) Outer body : CRCA Sheet of 1.6 mm thick (b) Doors: CRCA sheet of 1.6 mm thick. (c) Sound insulation : 100 mm thick rock wool (minimum density 64 Kg/Cum)/fire resistance foam as per OEM/as per standard manufacturing to achieve desired decibel level. (vi) The acoustic should be composite in construction and fully assembled integral unit. (vii) (viii) The DG Set should be provided with external emergency stop push button. (ix) The enclosure should be suitably illuminated by CFL/FTL lamp fittings. (x) The noise level should be 75 dB at 1 m under free field conditions. (xi) The acoustic enclosure parts shall be of powder coated after pre treatment process. The base frame should be painted with epoxy based black shade. Make of Engine : Kirloskar Oil/Cummins/Greaves Make of Alternator :- Kirloskar Green/Mahindra/Greaves

M & L for DHPP 'N' for testing of DG Set at site.

Supply and laying in trenches, fixed to wall or drawn through pipe etc., XLPE Insulated screened PVC bedded, galvanized steel strip or wire armored, electric power cables (heavy duty) 1100 Volts grade with stranded aluminium conductor of size 95 sqmm 3.5 core and connecting with necessary lugs complete all as specified and directed by Engineer-in-Charge. Note:- Excavation, earth work, brick protection, protection pipe and sand coushioning shall be measured and paid separately. Make of cable shall be CCI / Gloster / ICC / Unistar / NICCO / Asian (RPG) / Havells / Polycab/PRG/Universal/Plaza/Crystal cables/Terracom/ Rallison/Mescab/Jeypore/KEI

Excavating in trenches, not exceeding 1.5m wide and not exceeding 1.5 in depth for taking out /laying of cable pipe etc., and getting out in soft/loose soil.complete all as specified and directed by Engineer-in-Charge.

Returning, filling in soil, including spreading leveling, watering and wall ramming in laying not exceeding 25 cm thick complete all as specified and directed by Engineer-in-Charge.

Removing excavated soil to a distance n.exe 50m and depositing where directed at alevel n.exe 1.5m above the starting point complete all as directed by Engineer - in -Charge.

Supply and spreading of dry sand in trenches for cable coushioning and punned down complete all as specified and directed by Engineer-in-Charge. Note:- Punned thickness only shall be measured for payment purpose.

M&L for common burnt bricks, sub class 'B', of size 230 x 115 x 75 mm laid in trenches for cable protection complete all as specified and directed by Engineer-in-charge.

Earhing complete with galvanized steel earth plate electrode 600X600X6mm buried directly in ground (earth pit not less than 2.25 m deep below ground level) with top edge of the plate not less than 1.5m below ground level, connected to GI earth strip of size 32x6mm, by means of galvanized iron or steel bolts, nuts, check nuts and washers, and conneced to equipments as directed, including funnel with GI med grade watering pipe 20 mm bore, wire mesh charcoal or coke and common salt in alternate layers, of 15 cm compacted thickness all around the earth electrode, with concrete pit in PCC 1:3:6 type C-1 , 50 mm thick pre cast RCC 1:2:4 type B1 cover slab reinforced with 8 mm dia reinforced bar 15 cm C/C and earth lead handle protection including necessary excavation earth work in soft/loose soil and disposal of spoil to a distance n.exc.50m and necessary testing complete all as shown on electrical plate No.3 of MES SSR Part I complete all as specified and as directed by Engineer-in-charge. NOTE: Rate quoted shall be deemed to include for GI earth strip upto 7.5m.

Material and labour for 40 mm dia bore GI tubing Light grade, laid under roads/ floor, or fixed to wall or along the pole with suitable size M.S.flat iron clamps, nuts, bolts and washers for cable protection complete all as specified and directed by Egineer-in-Charge. Make: TATA/ZENETH/JINDAL or equivalent as approved by GE.

Supply laying and testing cable PVC insulated PVC sheated electric cables (heavy duty) 1100 Volts grade with stranded aluminium conductor of cross Sectional area 16 Sqmm 4 core conforming to IS- 694 complete all as specified and as directed.

S & F four pole onload changeover 200 Amp with advance neutral onload changeover SS Enclosure type incl taking down existing UNSV changeover all as directed. Make : Havells /L&T/Indoasian/HPL

SANJAY KAUSHIK

SANJAY MITTAL

GARGO TRADERS

MS MAYA PRAKASH GOEL AND SONS

M/S S. S CHETTRI AND SONS

BIJAY MITTAL