Public Works Department Tender

INDOOR LT CABLES, CABLE TRAY & DWC PIPE: XLPE INSULATED UN-ARMOURED CABLES (LOOSE):- Supply, laying and erection of aluminium conductor XLPE insulated PVC sheathed Un-armoured and served cable 1100 volts grade as per IS 7098 (Part-1)1988 to be laid loose in the existing trench or pipe as per PWD General Specifications:-

Supply, Erection, Testing and Commissioning of Silent (Sound Proof) Diesel Generator Set 40 KVA /32KW .It should be air cooled/water cooled naturally aspirated/ turbo charged/ turbo charged after cool (As per manufacturer standard). ENGINE: The Diesel engine developing 56 BHP (Approx.) for giving a power rating as per ISO 8528- Part-1 ( With CPCB-IV Norms amnded upto date) in KVA at the load terminals of alternator at 1500 rpm at actual site conditions. The engine shall confirm to IS 10000/ ISO 3046/ BS: 649/ BS 5514 amended up to date have dynamically balanced Fly wheel, air cleaner (dry/ oil bath type) as per manufacturer standard. A mechanical/ electronic governor of TYPE A1 AND A2 to maintain engine speed at all conditions of load, daily fuel service tank of minimum 8 hours running capacity as per manufacturer standard, Dry exhaust manifold with suitable exhaust residential grade silencer to reduce the noise level.suitable self-starter for 12 V/ 24 V DC ,battery charging alternator unit and voltage regulator, Lubrication oil cooler,Lubrication oil filters with replaceable elements. ENGINE CONTROL PANEL: Engine control panel fitted and having digital display i.e Start/stop key switch/push button, Battery charging indication,Engine Hours indications, Over speed indication, High water temperature indication, Lubricant oil pressure indication,) RPM indication and MCCB (Fixed Thermal and Adjustable Thermal protection) of suitable rating for outgoing supply. ALTERNATOR: The alternator should be designed as per (IS4722 and IEC:34 ) standard. Rated Power Factor : 0.8 (lag), Rated voltage : 230/415 volt, SPDP (Screen Protected Drip Proof), Degree of protection: IP-23, Ventilation : Self ventilated air cooled Alternator should have 40 degree maximum class H insulation, Automatic voltage regulator unit should be provided as per standard practice of manufacturer. Its voltage dip shall not exceed more than 20% of the rated voltage at any step load or transient load as per ISO 8528 (Part-1). Its efficiency at full load 0.8 power factor, 10% overload one hour in every 12 hrs of continuous use. ACOUSTIC ENCLOSURE: The enclosure shall be fabricated out the CRCA sheet of thickness not less than 1.6 mm on the outside cover with inside cover having not less than 0.6 mm thick perforated powder coated CRCA sheet. It should be IP54 Suitable for outdoor installation exposed to weather conditions, noise level up to 75 dB (A). All sheet metal parts should be processed through 7-tank pre treatment process and batteries accommodated in the battery rack .The acoustic lining should be made up of high quality insulation material i.e. Rockwool / glass/ mineral wool / PU foam of appropriate thickness & density for sound absorption.The inside of enclosure should be provided with at least one no. 28 W-T5 fluorescent tube light/ LED 10Watt luminaries controlled by a 5A switch for adequate lighting during servicing etc.with 2 year warranty from the date of installation. complete in all respect as desired by engineer at site:-The Generator set should be instaaled at site on the suitable size existing plinth of RCC as per specifacation DG set as per satisfacation of the Engineer- in-Charge at site. The model of engine will be decided by the Engineer in Charge. MANUAL CONTROL PANEL: Manual control panel shall be fabricated out of 1.6 mm sheet steel, totally enclosed, dust, damp and vermin proof wall mounted/ free standing floor mounted type with IP-53 degree of protection & front operated, composite meter for digital display, HRC fuses of suitable rating. MCCB (Fixed Thermal and Adjustable Thermal protection)/ ACB (Over cuurent/ overload, shorcircuit, instantenous, earth fault protection) should be used. Battery charger complete with voltage regulator, Voltmeter and Ammeter for charging the battery from external mains. This will be in addition to the battery charging alternator or dynamo fitted on the engine.All the components in the control panel shall be properly mounted, duly wired and labeled. Suitable terminals are to be provided for panel incoming and outgoing connections. System opeartion facility provided shall afford the following operational requirements. Necessary instruments and accessories such as voltmeter, power factor meter, KW meter, KWH meter, Ammeter, Frequency meter,battery charger complete in all respect as desired by engineer at site:- FOUNDATION: Making of Cement concrete foundation for 40KVA DG Set of Size 10' x 6' x 1' (Approx.) with 1.93 Cum. Foundation (Earth work in excavation in foundations, trenches etc. in all kinds of soil where pick jumper work is not involved and not exceeding 2.0 metres depth including dressing of bottom and sides of trenches, stacking the excavated soil clear from the edge of excavation and subsequent filling around masonry in 15cm. layers with compaction including disposal of all surplus soil as directed within a lead of 30 metres), 0.97Cum. Foundation (Cement Concrete 1:4:8 with stone ballast of size. 40 mm guage using concrete mixing volumetric type), 2.55Cum. Footing Foundation (Reinforced cement concrete M-25 mechanicaly batch mixed using batch type concrete mixer as per IS:1791 and vibrated by needle vibrator but excluding steel reinforcement centring and shuttering in foundation and plinth), 6.04Sqm Shutteing (Shuttering for faces of concrete foundations and foundation beam & plinth beam (vertical or battering)) and 2.55Qnt. Cold twisted deformed (Ribbed/ Tor Steel Bar/TMT) Bars Fe 500 grade as per IS 1786-2008, for R.C.C works, where not including in the complete rate of RCC including bending and placing in position complete in all respect as per site requirement and as desired by the Engineer in charge.

COPPER EARTHING :- Earthing with 8 SWG (4mm dia.) electrolytic copper wire thimbled (1No. copper thimble with suitable size steel bolt, washers & double nut) with 30cm x 60cm x 2mm thick copper plate (made cylindrical) burried below ground level in the hole of excavation having bore dia. 125mm and surrounded by salt & charcoal dust mixture (20 kg.) including fixing the copper wire run through 20mm dia. G.I. pipe (A-Class) recessed in wall and in floor etc., up to suitable Length in metre (including bore Length). G.I. pipe 20mm dia. (A-class) of suitable Length should be laid in the hole of excavation 1 feet below ground level and having GI Reducer 50mm x 20mm with PVC Cap (For pouring water) fixed on the top level of the pipe. 300mm x 300mm x 300mm deep haudi of First class bricks finished with 1:4 cement plaster and haudi covered with cast iron lid having size 300mm x 300mm (Heavy) around the hole of excavation:- (Body earthing & Neutral Earthing: 4Nos. for DG Set 40KVA)