Replacement of 250 KVA DG set in place of 62.5 KVA DG set in Circuit House, Rohtak Distt. Rohtak.

Amount

( a ) Main Switches

31.12Supply 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.

31.12(a)(xxvii) Cat-B Four pole change over switch 300/320 amp. 415 Volts

31.22 Earthing

31.22(i) Earthing with GI earth pipe 4.5 m long and 40 mm dia with masonry enclosure on the top etc. as required

31.22(ii) Extra for using salt and charcoal / coke for pipe earth electrode as required

31.22(xiv) Pdg. and fixing 25 mm x 5 mm copper strip on surface or in recess for connections etc. as required with all labour and material

Under Ground Cables

31.25Supply 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

M.R. items

N.S-1 Supply, erection, testing, commissioning and installation of 250 KVA (Manual type) 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.

1) 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

The Diesel Engine shall be complete with the following accessories:-

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

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

c)Radiator

d) Exhaust silencer of Residential type

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

f)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

2) 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/ Leroy Somer / Trident/ Stamford/ Meccalte.

3) MANUAL CONTROL PANEL :-

The Control Panel shall be made out of fabricated sheet 16 gauge (min) thick duly powder coated of suitable size for indoor/outdoor floor mounting installation. Aluminium Busbar/copper cables, internal wiring with suitable provision for / connection incoming/ outgoing leads. The Control Panel shall include following instruments :-

a)Composite meter for digital display of i. Voltage ii. Current. iii Frequency

b)One MCB/MCCB/ACB of suitable Rating

c)Push Button switch for on off operation

d)Indication lamps

e)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

4)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. 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

5)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.

250 KVA DG Set (Manual type) including the cost of suitable foundation as per PWD specification

Buy back items

Deduct - N.S.-2 Buy back of 62.5 KVA DG set (Inclusive GST)

DEVENDER KUMAR CONTRACTOR