Military Engineer Services Tender

Material and labour, sand cushioning with a layer of dry river sand, 80mm thick before laying of cable and 150mm thick (punned down to 100mm thick) after laying of cables, in trenches/ducts, complete all as specified and directed. Note : Punned down thickness (overall 18cm), shall be considered for measurement and payment.

Supplying and laying, factory made unreinforced precast concrete cable cover LV type-1, flat, of size 250x150x40mm, laid flat and dry in trenches over the cable for protection, length perpendicular to the direction of cable adjacent to each other, including taking out old and removal, complete all as specified and directed.

Supply, laying, jointing, testing and commissioning of Low Tension (LT) XLPE insulated, armoured, heavy duty, electric power cable, cross sectional area 120 Sqmm 3.5 core aluminum conductor 1100volts grade underground cable including both side connection with cable lugs etc, laid in trenches, along poles or passing through pipes or laid under floor or through walls etc, including taking out old and removal, complete all as specified and as directed. Note(s): (i) Excavation & earth work, sand cushioning and PCC cover for protection of cable shall be measured and paid separately.

Description all as per serial Item No. 6.00 here-in-before but cross sectional area 250 Sqmm 3.5 core aluminum.

Supply, installation, testing and commissioning of electric LT Feeder Pillar Box, outdoor, cubical type, floor mounted, factory made, CPRI approved, size 1000x1200x450mm, Al Bus Bar 800 Amps fabricated out of 3.4mm thick mild steel sheet mounted on frame of mild steel angle iron 40x40x6mm also comprising of following:- Inccoming:- (a) Change Over Switch 630 Amps -02 Nos (b) MCCB, four pole, 630 Amps, 415 Volts, adjustable type, with breaking capacity 50 KA- 01 No. (c) MFn Meter V, A, F, kW, KVA, kVAr, kWh, , PF etc Make L&T , Equivelent in Seimns and Schinider -01 Nos (d) Bus Bar Coupler 4 Pole ACB 630 Amp, 65 KA with Microprocessor Release IPR 1+ - 02 Nos (e) Suitable Contacter, relay,& circuit protection device Outgoing (i) MCCB 4 pole 415 Volts of capacity 200 amps thermal magnetic release adjustable type of breaking capacity 25 KA-06 No (outgoing) With addition to Amp meter-06 Nos (ii) TPN 4 pole 415 Volts of capacity 63 amps thermal magnetic release adjustable type of breaking capacity 10 KA-02 Nos (outgoing) With addition to Amp meter-02 Nos

Supply, installation, testing and commissioning of electric LT Feeder Pillar Box, outdoor, cubical type, floor mounted, factory made, CPRI approved, size 1000x1200x450mm, Al Bus Bar 800 Amps fabricated out of 3.4mm thick mild steel sheet mounted on frame of mild steel angle iron 40x40x6mm also comprising of following:- Inccoming:- (a) Change Over Switch 300 Amps -03 Nos (b) MCCB, four pole, 250 Amps, 415 Volts, adjustable type, with breaking capacity 35 KA- 04 No ( incl 04 Nos Amp meter). (c) MFn Meter V, A, F, kW, KVA, kVAr, kWh, , PF etc Make L&T , Equivelent in Seimns and Schinider -01 Nos (d) Suitable Contacter, relay,& circuit protection device Outgoing (i) MCCB 4 pole 415 Volts of capacity 63 amps thermal magnetic release adjustable type of breaking capacity 25 KA-04 Nos. (outgoing) With addition to Amp meter-04 No. (ii) MCB TPN 4 pole 415 Volts of capacity 32 amps thermal magnetic release adjustable type of breaking capacity 25 KA-04 Nos. (Outgoing) With addition to Amp meter-04 Nos. (iii) MCB SPN 32 Amps 240 Volts -02 Nos.

Earthing complete with copper plate elecrode of size 60cm×60cm ×3.15mm thick burried directly in ground vertically to a depth not less than 2.5 mtr below the ground level with top edge of earth plate at a depth not less than 1.5 mtr below ground level. Earth plate surrounded by 15mm thick packed alternative layers of charcoal dust and comman salt, earth 20×3mm copper strip by means of bolts , nuts, check nuts and washers of galvanised iron with thimbles. The other end of copper strip wire is connected to main switch board and protected by light grade GI pipe of 15 mm bore. provision of 20mm bore light grade GI pipe for watering including GI funnel and wire mesh. Pipe shall be provided vertically upto top level of earth pit and then taken horrizontally to the earth pit. Cement concrete chamber of PCC ( 1:3:6 ) type C-2using 40 mm graded stone aggregate.The chamber shall be constructed one metre away from edge of earth pit. 50 mm thick pre cast cover of cement conrete (1:2:4) type B-1 using 20 mm graded stone aggregate and MS angle iron 50 x 50 x 6 mm frame including two coats of synthetic enamel paint over a coat of red oxide primer to exposed steel surfaces. excavation in soft / loose soil, returning filling and removal of surplus soil to a distance of 50 metre as directed and shown in Electrical Plate No- 3 of SSR Part-1 (2009) to Amp meter-01

Supply,install ,testing, commissioning of 'Silent type' Prime duty with contineous operation diesel generating set alongwith having prime power rating of 160 ekW/200 KVA Required at Elevation of Thoise after Considering Derating Factor ( 11000 Ft approx ), 415 Volt, 75 db noise level at 1 mtr distance from DG Set with suitable Engine to develope 200 KVA, AC 415 Volt at 1500RPM , 0.8 lagging power factor at 415 volts suitable for 50 hz 3 phase system and for 0.85 load factor ,CPCB-IV or latest complied, acoustic enclosure,realy panel for automatic starting on main failure(AMF), anti vibration mountings, control panel and foundation.The DG set should be robust in construction factory tested and assembled to ensure perfect alignment of Engine and Alternator on a common base frame with same manufacturer. The DG set power rating indicated above is inclusive of altitude correction factor however the DG Set shall be designed and suitable to operate as per tropical condition of Thoise and for more details on service condition refer particualr specification. The DG set shall be comprising of following item as under: The DG set shall be comprising of following item as under: -

(a) Diesel Engine : The diesel engine shall be of four stroke cycle multi-cylinder,V-type,direct injection water cooled, turbo charged with after cooler, Air to air aftercooling and optimised turbocharger for increased altitude capabilities, developing suitable BHP @ 1500 RPM under tropical condition of Leh of BS 5514/ISO 3046 with an over load capacity of 110% for one hour in any specified 12 hrs of continuous operation,suitable for generating set application on AMF mode.The engine shall confirm to IS:10000/BS:649/BS 5514/ISO 3046.The engine shall have the following accessories: - (i) Cooling fan and radiator. (ii) DM water cooling systems with pre-mix anti-corrosive additive. (iii) Turbocharger. (iv) Fly wheel with fly wheel housing. (v) Electrical engine starter motor (disengagement after start-up) with Batteries. (vi) Battery charging systems. (vii) Stainless steel exhaust flexible elbow. (viii) Thermal sealing of exhaust pipe and aluminium cladding for complete exhaust pipe and silencer. (ix) Required filters for fuel, lube oil, air etc. (x) Sets of flexible hoses as required. (xi) Suitable rubber coupling to Alternator with guard. (xii) Suitable Engine controller for protection of the engine. (xiii) Coolant heater and crancase heater. (xiv) Oil drain Pump. (xv) Heavy duty air cleaner-02 nos. Note :- Derating factor for Diseal Engine shall be as per Thoise station at Ladakh.

(b) Engine protections: (i) High coolant temperature warning & trip (ii) Low lubricating oil pressure warning & trip (iii) Low coolant level warning & trip (iv) Fail to crank trip (v) Over crank trip (vi) High and Low speed trip (vii) Low or High battery voltage alarms. (viii) Clogged filter warning (ix) Lack of fuel (x) High Canopy Temperature (xi) Set fail to start protection after failure of the set to start after successful three consecutive start attempts.

(c) Governor: The governor shall be of electronic type suitable for monitoring constant engine speed within the specified limits for auto parallel and auto load sharing operation.

(d) Exhaust : The exhaust piping system shall be supplied with a hospital grade silencer and catalytic converter suitably optimized to meet stringent noise emission standards laid down by MoEF / CPCB.The exhaust piping and the silencer shall be wrapped with rock wool and/or calcium silicate. The outside shall be neatly wrapped with aluminum cladding. The exhaust line shall be extended beyond the height of the utility building roof as required by pollution control norms. Suitable supporting structure for installation shalll be provided.

(e) Hot air exhaust (Radiator cooling): GI duct shall be provided for hot air exhaust from DG set up to designated place of duct outlet. The duct shall be made of 14 Gauge thick Class-8, Galvanized Iron (GI) Sheet.Galvanised Iron (GI) duct shall be provided for venting hot exhaust air out of the DG room, from radiator hot air outlet point of the DG Acoustic enclosure through nearest brick wall.

(f) Fuel Tank : Inbuilt/internal bottom mounted (with-in DG set or with-in base frame) diesel tank of suitable capacity with mounting brackets, complete with fuel inlet, out let, air vent, drain plug, level indicator, inter connection pipes from tank to diesel generator as required. Suitable barrier shall be provided between Diesel tank and the Engine. Fuel tank shall be fabricated as per tropical conditionof Thoise with approx. capacity or designed capacity shall be suitable for 8 hrs continous operation or 14 hours capacity at 75% load.

(g) Starting system :The engine starting shall be by means of totally enclosed axial type electric starter suitable for 24 volts DC starting system comprising of starter motor, voltage regulator and arrangement for initail exciation complete with suitable number of batteries(2 x180Ah) (25 plates, 180AH Sealed Maintenance Free (SMF) Lead-Acid type as required as per specifications.The battery shall be supplied with a suitable floor mounted MS stand treated with seven tank treatment, two coats of red oxide /primer & acid resistant paint with wooden base, adaptor box etc . with copper conductor battery leads of required length and socket/clamps

(h ) Alternator: (i) 200 KVA 3 phase 0.8 PF 415V, 4 wire 1500 rpm self-excited and self regulated through electronic AVR confirming to IS :4722/BS 2613 suitbale for tropical condition with brush less exciter, housed in screen protected drip proof enclosure. The alternator shall be confirming to IS 13364 Part-2 & IS 15999 Part-1/ IEC 60034 Part-1 capable of delivering rated output at rated power factor with,a. Terminal voltage differing from the rated value by not more than +/- 5%. (ii). Frequency differing from the rated value by not more than +/-0.5%. (iii). Short circuit capacity of 300% for 10 seconds. (iv). Over load capacity of 110% for one hour. The insulation class of the Alternator shall be class F/ H. The temperature rise shall be limited to class B and Ingresses enclosure protection shall IP23 or better. The alternator shall be fitted with suitable Nos. Resistance Temperature Device (RTD) & Bearing Temperature Device (BTD) along with space heaters.The out put terminals of each Alternator shall be connected to an MCCB/ACB isolator of suitable capacity through a cable system. The ACB Panel shall be housed inside the acoustic enclosure.Alternator shall have dedicated terminal box with extended Tinned copper bus bars suitable for connecting Conventional TPN Aluminium Bus duct (truncking).

(j) Alternator Protection: Alternator should have following protections: - (i) Over and Under voltage (ii) Under and Over frequency warning and trip (iii) Loss of excitation (iv) Over current and Earth Fault and Short Circuit Protection (v) Unbalanced loads (vi) Restricted Earth Fault Protection. (vii) Differential protection. (viii) Diode Failure.

(k) Voltage regulator: A rapid response voltage regulator shall be provided to regulate the generated voltage.The overall regulations from no load to full load, including cold to hot variation and load power factor of 0.8 lag to unity shall be within 2% of the normal voltage. The excitation system shall be designed to promote rapid voltage recovery following sudden application and disconnection of load.

(l) Acoustic enclousure : The acoustic enclosure should be supplied along with DG set from the manufacturer outlet itself as per CPCB norm.Acoustic enclosure shall be of powder coated and fabricated out of 2mm thick CRCA MS sheet. The canopy shall have four hinged doors, one door with glass window to view proper parameters on the control panel. The canopy and doors shall have inside lining of fire retardant foam/glasswool as acoustic materials. The base frame shall be fabricated in ISMC channel or in sheet metal, with lifting hooks for convenient lifting of complete set i.e. along with canopy, engine and alternator. The sound level shall have less than 75 db (A) at a distance of 1 meter.High quality noise absorbant and fire-retardant grade acoustic Insulation material (P.U. Foam) complying to IS 8183. The allowable temperature raise inside the canopy is 5 to 7 deg. Centigrade. The Measurement of noise should be as per ISO 3744/ ISO 8528 (Part 10) standard.The canopy has the provision of emergency push button, external to the canopy.

(m) AMF Control Panel :The control panel shall be designed for Automatic ON Mains Failure Operationof the Generator sets. The Panel will be totally enclosed, Dust tight, vermin proof,floor mounted, free standing, cubical compartmentalized type with hinged doors, fabricated from 2.0mm CRCA Steel metal having separatecompartments . The Panel will be epoxy painted powder coated with light grey shade, After Seven Tank treatment, and the Panel / compartment will be fitted with the following instrument and pre-wired with colour coded flexible copper cable with ferule Numbers for easy identification & maintenance. The panel shall be complete with interconnections, insulators, two nos. of earthing lugs and with suitable rating of MCCB at both the end & shall incorporate the followings: -

(n) Neutral contactors. (ii) AMF logic unit having protection for over frequency, under frequency, over voltage, under voltage, Low lube-oil, and high water temperature for Engine.The AMF unit will have provision for Auto Start, Auto Stop of the D.G.Set,with 3 attempts cranking relay. (iii) Main supply voltage monitor.(iv)Combined Meter (MFM) for Voltage, Current, Frequency, KVA,KWH & P. F. (v) CT’s of suitable rating (vi) Satic Battery charger connected on mains consisting of Transformer, Rectifier, D.C. Voltmeter, D.C.Ammeter, charging rate selector switch (Trickle/Boost, Indicating Lamp, onoff switch) (vii) Auto / Manual mode switch (viii) Miniature Circuit Breaker for Fuses (ix) Hooter 24 volt (x) Annunciations, Alarms & Trips for High water Temperature, Over speed, Set fails to start and D.G. overload (xi) Push Buttons for Breaker on-off,D.G. Start / stop,Engine Trip,Hooter Accept and For Reset (xii) Indicating Lamps for Load on mains,Load on D.G. Set,Low lube oil pressure and High water temperature (xiii) Suitable size of Tinned Copper bus bar will be provided with current density of 1.2 Amp per mm².

(o) Set of relays and contactor of suitable capacity with ACB, 4 pole, 1600 Amps, 415 Volt. for automatic start & automatically shut down of DG set or as per manufacturer recommendation of suitable rating & capacity - 02 Nos. (xv) By pass arrangement by providing on load change over switch 1600 Amps 4 pole to be installed with AMF- 02 Nos.

Note : 1.AMF Panel shall be installed outside the acoustic enclousre (ii) LT Cable of suitable rating from DG set Alternator output to Automatic main failure panel (AMF panel) should be provided by the contractor .(iii) Cost of DG set foundation deemed to be included in cost of item.(iv) Contractor should submit necessary drawing to GE/Engr-in-Charge before placing the order. (v) The Gen set must be affixed with label meeting the following requirement (The lable shall be durable and legible) (a) Name and address of the engine manufacturer. (b) Statement that this engine conforms to the environment (PROTECTION) (c) Type and approval certificate number. (d) Date of manufacturing of Gen set. (vi) The complete DG Set including Engine / Alternator shall be factory assembled by manufactured or its authorizes dealer as approved for assembling of the DG set. A certificate in this connection shall be submitted to the GE. (vii) Anything missed out above but technically required for efficient working of DG set is deemed to be including in quoted rates. (viii) The quoted rate shall be deemed to be inclusive of first fill of engine oil (ix) The quoted rate shall be deemed to be inclusive of 12 hours test run at site as specified in PS in presence IEM detailed HQ CE(AF) Zone, all testing arrangements / equipments shall be made available by the contractor for tests. POL shall be arranged by contractor for testing and cost deemed to be included in quoted rate. (x) The contractor shall arrange load / resistive load / water load for testing for final testing of DG set at site and the cost is deemed to be included in quoted rate. (xi) DG set should be sound proof as per latest policy. (xii) Drawing for Plinth of DG Set shall be provided by OEM and approved by GE.