Replacement of existing 125 KVA DG set with 320 KVA DG set in Mini Sectt. Phase-II in Rohtak Distt.

Amount

31.22 (Q) Earthing

31.22(iv) Earthing with GI earth plate 600 mm x 600 mm x 3 mm thick including accessories and providing masonry enclosures with cover plate having locking arrangement and watering pipe etc. ( but without charcoal or coke and salt ) complete as required.

31.22(v) Extra for charcoal or coke and salt for G.I. Plate or copper plate earth electrode

31.23 (R) Lightning conductor (a) Copper.

31.23 (vii) Supply and erection of copper tape 32 mm x 6 mm thick from earth electrode directly in ground and surface , fixed with suitable copper stapples of same size

Under Ground Cables

31.25 Supply and erection of under ground cable 1 metre below ground level covered with sand and bricks including necessary connections, digging and refiling of trenches.

31.25 (xxx) Ard.120 Sq. mm 3.5 Core Cable

31.26 Supply and erection of under ground cable ,loose in existing pipe or trenches complete with necessary connections

31.26 (xxx) Ard. 120 Sq. mm 3.5 Core Cable

31.28 Supply and erection of suitable compression type brass cable glands for underground Cable

31.28 (v) 120 Sqmm to 185 Sqmm Cable 3 to 3.5 Core

M.R. items

N.S-1 Supply, erection, testing, commissioning and installation of 320 KVA 3 Phase 415 Volts electric start, factory assembled, Diesel Generating Set as per I.S 4722 and or the latest I.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 shunted on a same plate of Robust construction

DIESEL ENGINE : (Manufactured in India)

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/Cumins/Ruston

The Diesel Engine shall be complete with the following accessories

Engine instrument Panel consisting of starting switch/push button, Lube Oil and Pressure Gauges, Water Temperature Gauge, RPM indicator and Hour meter

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

Radiator.

Exhaust silencer of Residential type

12V/24V starting system complete with starter motor, charging alternator and Cutout.

Lead Acid battery of suitable ratings with connecting cables. The batteries shall be supplied in uncharged conditions and of Make : EXIDE/ STANDARD FURUKAWA/ AMARON/ TATA-GREEN/ AMCO/ LUMINOUS/ PACESETTER.

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

ALTERNATOR :-

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

ARRANGEMENT

Diesel Engine and Alternator should be close coupled and mounted on a base plate of robust construction

AMF CONTROL PANEL

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.

The AMF Control Panel shall have the following instruments

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.

Engine On-Off switch (Push button type)

MCCB/Fuses of suitable rating shall be provided

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.

Two contactors/ACB of suitable rating (one for DG set & one for AC mains) with over load relay

Under + Over Voltage Relay

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

Instrument & Control Fuses/MCB

Four number indicating lamps to indicate ‘load on mains’ ‘set running’ ‘load on set’ and ‘battery charger on’

Audio visual alarm for ‘Low lubricating oil pressure’ High water temperature’ (for water cooled), ‘Start failure’, and ‘DG overload’

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).

All Electro components/ parts such as MCCB/ MCB/FUSE/ Contactor/ Meters should be of L&T/ ABB/ SCHINEDIER/AE/ENERZON/GE/HAVELLS/ SIEMENS make.

SOUND PROOF ENCLOSURE (CANOPY)

The generator shall be in a sound proof (Acoustic) enclosure suitable for Diesel Generating Set complete in all respect having following specification/ Feature

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

FOUNDATION

Foundation of DG set will be made suitable for capacity of DG set as under: Specification:- Const. of foundation for Diesel Generator of size length and width 300mm more all around the DG set having foundation with 150mm CC 1:4:8 with stone aggregate 40mm nominal size in foundation and brick work in cement motor 1:6:600mm (300mm underground and 1000mm above ground) and earth filling inside and cement concrete 1:1:5:3 slab with stone aggregate 20mm nominal size with steel reinforcement 10mm dia 150mm center to centre both way. Including cement plaster 1:4 all around as per PWD specification and up to entire satisfaction of Engineer-In-Charge of work.

i) 320 KVA DG Set

N.S.-2 Supply and erection of 400 Amp. 4 pole 415 volt change over switch with rag bolt on wall or on existing angle iron board / pedestal including bonding to earth and necessary connection etc. with all labour and material required to complete the job in all respect upto the entire satisfaction of Engineer-in-Charge of the work. Make: Standard / Havells / Indo Asian

Buy back items

Deduct - N.S.-3 Buy back of 125 KVA DG set of Mahindra make. (Inclusive GST)

DEVENDER KUMAR CONTRACTOR