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| 1 | 6.6 Earth work in excavation in foundations, trenches, etc. in all kinds of soils, not exceeding 2 metres depth including dressing of bottom and sides of trenches stacking the excavated soil, clear from the edge of excavation and subsequent filling around masonary, in 15 cm layers with compaction, including disposal of all surplus soil, as directed within a lead of 30 metres. |
| 2 | 10.40Cement concrete 1:3:6 with stone aggregate 20 mm nominal size foundation and plinth. |
| 3 | 10.26 Cement ConcreteCement concrete 1:8:16 with brick ballast 40 mm nominal size in foundation and plinth. |
| 4 | 10.41 Cement concrete 1:2:4 with stone aggregate 20 mm nominal size in foundation and plinth. |
| 5 | 11.2 First class brick work laid in cement sand mortar 1:6 in foundation and plinth |
| 6 | 15.6 12 mm thick cement plaster 1:5. |
| 7 | (a )Main Switches |
| 8 | 31.12 Supply and erection of metal clad switches / B.D.Bs with rag bolts on wall or on existing angle iron board / pedestal including bonding to earth and necessary connections. |
| 9 | 31.12 (a ) (xxv) Cat-BFour pole change over switch 100 amp. 415 Volts |
| 10 | 31.22 (Q) Earthing |
| 11 | 31.22 (iii)Earthing with GI earth plate 600 mm x 600 mm x 6 mm thick including accessories and providing masonryenclosureswith cover plate having locking arrangement and watering pipe etc. (but without charcoal or coke and salt)complete as required. |
| 12 | 31.22 (v) Extra for charcoal or coke and salt for G.I. Plate or copper plate earth electrode. |
| 13 | 31.22 (xi) Pdg. and fixing 25 mm x 5 mm G.I. strip in 40 mm dia G.I. pipe from earth electrode as required. |
| 14 | 31.26 Supply and erection of underground cable, loose in existing pipe or trenches complete with necessary connections |
| 15 | 31.26 (xxv) Ard. 25 Sq. mm 3.5 Core Cable |
| 16 | 31.67 Supply and erection of mark double walled corrugated (DWC) HDPE pipe laid 1Mtr. Below ground level including diging and refilling of earth including cost of suitable size socket/cuppler for HDPE pipe including the cost of labour and material required to complete the job in all respect upto the entire satisfaction of Engineer-in-Charge of the work. |
| 17 | i) HDPE pipe 63/50 mm outer dia/inner dia. |
| 18 | N.S.-1 Supply, erection, testing, commissioning and installation of 62.5 KVA 3 Phase 415 Volts electric start, factory assembled, Diesel Generating Set as per I.S 4722 and or the latestI.S. specification complete with fuel tank and batteris and AMF panel and other standard accessories as supplied by the manufacturers complete in all respect upto the entire satisfaction of Engineer-in-Charge of the work.Diesel Engine and alternator should be close coupled and mounted on a base plate of robust construction. |
| 19 | 1 DIESELENGINE : (Manufactured in India) |
| 20 | Diesel Engine shall be Liquid Cooled, electric start developing required B.H.P. at 1500 rpm suitable for alternator to deliver specified continuous KVA output at 0.8 lagging PF at NTP conditions (Rating shall be tested at Unity PF). The Diesel Engine should be capable of providing 10 % overload for one hour continuous running at full load after every 11 Hours continuous running. Diesel Engine should be fitted with Electronic Governor.Make: Kirloskar / Greaves Cotton / Cummins |
| 21 | The Diesel Engine shall be complete with the following accessories:- |
| 22 | a) Engine instrument Panel consisting of starting switch/push button, Lube Oil and Pressure Gauges, Water Temperature Gauge, RPM indicator and Hour meter |
| 23 | b) Low lube oil pressure safety required in Engines, High Water temperature safety for water cooled Engines is required. The safety should include audio alarm and trip facility also to avoid damage to the engine. |
| 24 | c) Radiator. |
| 25 | d) Exhaust silencer of Residential type |
| 26 | e) 12V/24V starting system complete with starter motor, charging alternator and Cutout. |
| 27 | f) Lead Acid battery of suitable ratings with connecting cables. The batteries shall besupplied in uncharged conditions and of Make :EXIDE/ STANDARD FURUKAWA/ AMARON/ TATA-GREEN/ AMCO/ LUMINOUS/ PACESETTER. |
| 28 | Diesel Engine of direct injection or Diesel Engine fitted with common Rail Direct Injection Pump shall be accepted.The Engine should confirm to applicable Emission Norms. The Diesel Engine shall be accepted only which conforms to BIS : 10000/1/2 or BS:5514. |
| 29 | 2) ALTERNATOR :- |
| 30 | The Alternator shall be self – excited, self – regulated of specified KVA rating in three phase at 415 Volts, 50 Hz, 1500 RPM and 0.8 pf lagging (Rating shall be tested at Unity PF). The alternators shall be of brushless type only. The alternators shall be screen-protected drip proof with Min. IP-21 or improved degree of protection for outdoor installations. The class of insulation of the Alternator would be F/H. The rated voltage of Alternator will be 415 V for 3 phase.Make of Alternator : Kirloskar / Kirloskar Green/ Crompton – Greaves/ Stamford |
| 31 | ARRANGEMENT |
| 32 | Diesel Engine and Alternator should be close coupled and mounted on a base plate of robust construction. |
| 33 | 3) AMF CONTROL PANEL :- |
| 34 | Automatic mains failure (AMF) control panel shall be able to start up the DG set and can transfer the load on to D.G. set on mains failure without requiring any human intervention, similarly, on restoration of main supply, it shall be able to transfer the load to mains supply and switch off the D.G. Set automatically. The AMF panel enclosure should be with the IP-53 degree of protection and shall be fabricated from minimum 16 SWG thick steel sheet duly pre-treated and aesthetically finished and Power coated. |
| 35 | The AMF Control Panel shall have the following instruments : |
| 36 | 1. Generator voltage/AC Mains voltage. 2. Generator Current. 3. Load Current. 4. Power Factor. 5. Frequency. 6. Energy. 7. Three attempts engines start/ engines cranking relay. 8. On delay timer for load change over. 9. On delay timer for engine shut off. |
| 37 | b) Mode selector switch for setting the panel on any one position such as off or auto or manual or test. |
| 38 | c) Engine On-Off switch (Push button type) |
| 39 | d) MCCB/Fuses of suitable rating shall be provided. |
| 40 | e) Rectangular Aluminium Bus Bars (one number for each phase, neutral and Earthing terminal) of adequate ratings duly colour coded with heat shrinkable PVC Sleeves or Copper Cables. |
| 41 | f) Two contactors/ACB of suitable rating (one for DG set & one for AC mains) withover load relay. |
| 42 | g) Under + Over Voltage Relay. |
| 43 | h) Automatic Battery charger with on-off switch, voltmeter and ammeter for charging the battery from mains. This will be addition to the battery charging alternator fitted on the engine |
| 44 | i) Instrument & Control Fuses/MCB. |
| 45 | j) Four number indicating lamps to indicate ‘load on mains’ ‘set running’ ‘load on set’ and ‘battery charger on’. |
| 46 | k) Audio visual alarm for ‘Low lubricating oil pressure’ High water temperature’ (forwatercooled), ‘Start failure’, and ‘DG overload’ |
| 47 | l) Any other switch, instrument, relay or contactor etc. essential for smooth and trouble free function of DG set with AMF Panel (to be specified by the tenderer in their offer with complete detail of the item). |
| 48 | m) All Electro components/ parts such as MCCB/ MCB/FUSE/ Contactor/ Meters should be of L&T/ ABB/ SCHINEDIER/AE/ENERZON/GE/HAVELLS/ SIEMENS make. |
| 49 | 4) SOUND PROOF ENCLOSURE (CANOPY) |
| 50 | The generator shall be in a sound proof (Acoustic) enclosure suitable for DieselGenerating Set complete in all respect having following specification/ Feature :- |
| 51 | Fabricated as per standard specification of manufacturer, stuffing done with suitable Foam/ Rock wool. Rock wool supported with Tissue Paper or perforated sheets having holes. Residential type silencer provided to lower the noise of exhaust outlet. Canopy treated for antirust with powder coating. Should have fresh Air inflow and proper ventilation. Modular in construction and provided with lockable doors. The Sound proof enclosure shall be strictly as per CPCB prevalent norms. The sheet thickness should be 18 gauge (min) as per manufacturer standard and as per CPCB rules |
| 52 | Note: -Foundation size of D G Set should be strictly as per specification approved by department |
