PROVN OF 01x62.5KVA DIESEL GENERATOR AND ACCESSORIES FOR COMN COMPLEX AT 45 INF BDE SIG COY IN NIWARU AT JAIPUR MIL STN

Amount

Excavation in trenches, not exceeding 1.5 m wide and not exceeding 1.5 m in depth for foundation, etc or for shaft, well, cesspit, manhole, pier holes etc. not exceeding 10 sqm on plan and not exceeding 1.5 m in depth and getting out soft/loose soil etc complete all as specified and directed.

Returning filling with earth obtained from excavation including spreading watering and consolidation in layers not exceeding 25 cm thick .etc complete all as specified & directed.

Removal of excavated material not exceeding 50m and depositing where directed at a level not exceeding 1.5 m above the starting point .etc complete all as specified & directed.

M&L bricks for protection cover to underground cable (with old size sub class `B` bricks) with width equal to length of brick laid dry and flat abutting each other with gaps between adjacent brick not exceeding 10 mm as directed by Engineer in-charge.

M&L Sand cushioning to PVC underground cable with screened and washed sand (tibba sand) and punning to provide a required cover.

M&L earthing complete as per electrical plate No. 3 of MES SSR Part-I with galvanised steel earth plate electrode 60cmx60cmx6.0mm thick, buried directly vertically in ground in a pit depth not less than 2.25 metres below ground level with top edge of earth plate at a depth not less than 1.5 metre below normal ground level connected to and including galvanised iron or steel earth strip 32mm x 6mm by means of bolts, nuts check nuts and washers of galvanised iron or steel. Earthing strip shall be protected by galvanised iron or steel pipe 40 mm bore light grade and connected to continuous earth wire on pole / test point. Watering pipe shall be 20 mm bore GI medium grade. The earthing shall be of inclusive of excavation & earth work in any type of soil, charcoal, salt, funnel PCC pit and RCC cover complete all as specified & tested complete. NOTES :- (i) The concrete pit shall be PCC (1: 3:6), 20mm thick precast cover slab of RCC (1:2:4) type B1 using 20mm graded stone aggregate with suitable mild steel handle in lieu of cast iron cover shown in electrical plate No-03 of MES SSR Part-I. Reinforcement in RCC cover shall be 8 mm dia TMT steel bar @ 150mm c/c both ways. (ii) Item includes the cost of 7.5 mtr GI pipe for protection of earth lead/strip. Any variation in length shall be measured and paid through relevant item of schedule 'A'. (iii) Item includes the cost of 7.5 mtr earth lead strip. Any variation in length shall be measured and paid through relevant item of schedule 'A'. iv) Earth electrode shall be surrounded by adequate quantity of charcoal dust and salt to packed thickness of 150mm on all sides as specified.

Supplying, laying, connecting and testing in trenches, under floors/ roads or on walls Cable XLPE insulated screened PVC bedded galvanized steel strips or wire armoured, electric power cables (heavy duty) ISI marked with stranded aluminium conductor, 1100 volts grade, of size 50sqmm, 3.5 core etc complete all as specified and directed.

Construction of platform for diesel generator of size 4mx3m and height 0.6 m above GL with following operations:- (a) Excavation and earth work shall be in any type of soil and shall be deposited to a distance exceeding not exceeding 50 meters including returning filling etc. (b) Foundation to a depth 0.7 m from GL with PCC subbase 100mm thick (1:4:8) type D-2 using 40 mm graded crushed stone aggregate. (c) Step Brickwork in CM (1:6) below GL with width 545mm, 345mm and 230mm with each step 200mm height over PCC subbase as above (d) Platform shall be with 230mm thick all round brick work with CM(1:6) and plastered the external surfaces above GL 15mm thick in CM(1:4) and finished with two coats of cement base paint over one coat of primer (e)Top of platform shall be provided in 100mm thick PCC in (1:3:6) type C-2 over 100mm thick broken stone boulders over sand filling compacted in layer not exceeding 25cm each by watering and ramming etc complete all as specified and directed by Engineer-in-Charge.

Supply , install, testing and commissioning of silent type diesel engine driven generating set of min 62.5 KVA capacity 3 phase, 4 wire, 415 V, 1500 RPM conforming to relevant IS codes, AC power supply with power factor 0.8 coupled directly to alternator mounted on a common plate with sturdy design, bed plate shall be suitable for mounting on anti vibration mounting system, load factor 0.85, complete with integral acoustic enclosure-sound proof canopy (should have silent features as per latest CPCB norms), fuel tank having facility for easy cleaning, suitable battery charging unit including battery & standard accessories, and at least 2 year warranty.

(A) ENGINE : Liquid cooled, electric self start, 4 stroke, min 4 cylinders cold starting, naturally aspirated/TCI aspirated (as per manufacturer standard), compression ignition, totally enclosed diesel engine, 1500 RPM suitable for 62.5 KVA alternator under NTP conditions as per ISO 8528 Part-I capable of taking 10% over load for 1 hour after 12 hours continues running confirming to IS : 10000/10002/ISO 3046/BS:649/BS:554 amended upto date, the engine shall consist of the following :-

(i) Dynamically balanced fly wheel or as per manufacturer’s standard.

(ii) Coolant cooling system complete.

(iii) Air cleaner as per manufacturer’s standard.

(iv) Fuel injectors and fuel pump as per manufacturer’s standard.

(v) Electronic/ Mechanical governor as per manufacturer’s standard to maintain engine speed at all conditions of load.

(vi) Fuel service tank of minimum 185 ltr capacity fabricated from MS sheet with inlet outlet connections, air vent tap, drain plug, calibrated level indicator (gauge), MS fuel piping from tank to engine with valves, unions, reducers, flexible hose connections, mounting pedestals, fuel filters including all as per manufacturer's design.

(vii) Dry exhaust manifold with suitable exhaust residential grade silencer to reduce noise level as per CPCB norms.

(viii) (a) Static battery charging unit suitable for 120 Ah battery/ battery array 12/24 volt having float, trickle and boost charging feature. Charging should be from utility supply/generator supply as directed by Engr in Charge. (b) One 120 Ah battery connected with copper lugs and minimum 6 sqmm cable placed inside the acoustic enclosure.

(ix) Gear driven oil pump for lubricating oil, priming of engine bearing, as well as fuel systems as per manufacturer’s recommendation.

(x) Naturally aspirated/ turbo charger as per manufacturer’s standard.

(xi) Lubrication oil coolers and filters with replaceable elements as per manufacturer’s standard .

(xii) Crank case heater with manufacturer’s recommendation.

(xiii) All moving parts of the engine shall be mechanically guarded in such a manner that a human finger cannot touch any moving parts.

(xiv) Radiator as per manufacturer's standard.

(xv) Engine control panel having digital display complete with :- (aa) Start/stop key switch (ab) Lubricating oil pressure indication (ac) Lubricating oil temperature indication (ad) Water temperature indication (ae) RPM indication (af) Engine hours indication (ag) Battery charging indication (ah) Low lub oil trip indication (aj) High water temp indication (ak) Over speed indication

(xvi) Any other item not included/specified but is a standard design of the manufacturer

(B) ALTERNATOR : (i) Alternator of capacity 62.5 KVA , 1500 RPM, 0.8 lagging power factor, 3Ph, 415 V, 50 Hz, H Class insulated winding, IP-23 protection, Close-direct-coupled, brushles self-excited and self-regulated type, SPDP enclosure, mounted on rigid MS sheet channel base frame, alternator shall be confirming to IS: 13364, IS: 4722,IS 4889 , IEC: 34 and suitable for tropical condition. (ii) Type : Brushless Self excited self regulated with automatic voltage regulator (electronic type) (iii) Rating : 62.5 KVA at 0.8 PF lagging 4 pole horizontal at NTP condition. (iv) Speed : 1500 RPM (v) System : 415 Volt +/- 5 % AC 3 phase 4 wire 50 Hz. (vi) Connection : 4 wire star connected. (vii) Enclosure : Screen protected drip proof. (viii) Ventilation : Self ventilated (ix) Anti friction bearings (x) AVR output voltage within +/- 1% (xi) Frequency in range 50+/- 3 % (xii) Over load capacity and duration: 10 % for 1 hour after each 12 hour continuous operation, 50% for 15 sec

(C) ACOUSTIC ENCLOSER: (i) Shall have Anti vibration mountings for direct mounting of engine alternator assembly. (ii) Should be designed to meet CPCB norms for noise level (75dB at 1 mtr) (iii) Construction shall be such ,it prevents entry of rain water splashing in to the enclosure and allows quick flow of rain water to ground in event of heavy rains. (iv) Suitable No of doors shall be provided for easy servicing and part replacement of DG set. (v) It shall be suitable to be dismantled during overhaul of DG. (vi) Shall be suitable for cable entry upto 3.5 core 95 Sqmm XLPE cable (vii) Inside of enclosure shall be provided with 2x 12 watt lead lamps controlled by 5 amp switch supplied from load side od AMF Panel.

(D) CONTROL PANEL The control panel is to be inside canopy and fabricated out of 1.6mm thick CRCA sheet cubicle type totally enclosed, powder coated, IP-53 protection, equipped with MCCB/circuit breaker of suitable capacity, voltage metering & safety, frequency meter metering & safety, ampere metering & safety, fuel level gauge in % metering , Lub oil pressure metering, high water temp metering, engine RPM metering, Power metering, Power factor metering, set of suitable CTs, toggle switch, indicating LED lamps , incoming and outgoing terminals all as specified by manufacturer and directed by Engr-in-Charge.

(a) Following engine shutown and alternator protection provisions shall be provided in control panel:

(i) Engine: (aa) Low lubricating oil pressure shutdown. It shall be inoperative during starting and accelerating period of engine. (bb) High coolant temp shutdown (cc) Engine overspeed shutdown (ii) Alternator: (aa) overload (bc) Short circuit (cc) earth fault (dd) Over voltage

(b) Monitoring and measuring Facility: (aa) Necessary energy analyser unit for visual monitoring of Mains ,Alternator and load voltage, current, Frequency, power factor, KWH, KW etc (bb) Visual monitoring lamp indication for load on DG set, Load on Mains, engine shutdown for over speed, over load trip, earth fault trip, engine lockout and failure to start, all with audio and visual alarm.

Note : Generator shall have AMF panel as per standard of manufacturer for automatic starting on mains failure AMF panel shall be fully enclosed vermin, dust proof, 1.6mm thick CRCA sheet having ingress protection IP42 if housed/ integrated inside the acoustic enclosure. If installed outside acoustic enclosure ,AMF Panel shall be 3 mm thick CRCA outdoor type having ingress protection of IP 54 as per manufacturers standards. And installation cost shall be included in quoted rates. AMF panel shall have facility of manually transferring load from mains to generator and vice versa.

S&F for galvanised steel tubing light grade for protection of underground cable on poles /walls under road crossing etc GI pipes of 80mm bore etc complete all as specified and directed.

Pioneer Enterprises

DIVYA ASSOCIATES

MORESHWAR ELECTRICALS CORPORATION

SHREE BHAGWATI ENTERPRISES