Military Engineer Services Tender

(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-IV compliant. 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 shall be provided.

(e) Hot air exhaust (Radiator cooling): As per OEM recommendation if sufficient exhaust for radiator is not available , the contractor has to provide GI duct for hot air exhaust from DG set up to designated place of duct outlet. The duct shall be made of 14 Gauge thick GI Sheet including necessary civil work.

(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 environmental condition of Leh with approx. capacity or designed capacity shall be suitable for 8 hrs continuous operation or 14 hours capacity at 75% load. In case the inbuilt base frame tank is not capable to hold POL for 8 Hrs continuous operation, contractor shall provide additional tank made up of MS Sheet capacity separately as per manufacturer recommendation.

(g) Starting system :The engine starting shall be by means of totally enclosed axial type electric starter suitable for 12/24 volts DC starting system comprising of starter motor, voltage regulator and arrangement for initial excitation complete with suitable number of batteries as Per OEM Specification ,Sealed Maintenance Free (SMF) Lead-Acid type suitable for HAA Leh .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) 320 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 suitable for environmental 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 of 0.8, 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 out put terminals of each Alternator shall be connected to an MCCB of suitable capacity microprocessor based , adjustable type through a cable system. The control Panel shall be housed inside the acoustic enclosure. Make of alternator :- Stamford/Kirloskar electric/Jyoti/Cummins Electric/Crompton Greaves

(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 enclosure : The acoustic enclosure should be supplied along with DG set from the manufacturer outlet itself as per latest CPCB norm. Acoustic enclosure shall be of powder coated and fabricated out CRCA MS sheet. The canopy shall have 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/glass wool 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 absorbent 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. Note : The acoustic enclosure shall be made by the OEM of original engine Manufacturer of load.

(m) AMF Control Panel : AMF (Auto Mains Failure) control panel ( Indoor type), CPRI Approved, 3 phase, 4 wire, 50 cycles/s manufactured by approved OEM of engine manufacturer fabricated out of 2mm thick CRCA sheet cubical type, prewired with PVC insulated copper connection cable suitable size and powder coated for weather proof and long lasting finish including following accessories :- (i) 01 No AC Voltmeter 0-500 Volts flush mounting of size 100mm with selector switch, digital type. (ii) 01 No AC Ammeter 0-500 Amps flush mounting of size 100 mm with selector switch and CTs, digital type. (iii) 01 No MCCB 630 Amp, 4 pole, rupturing capacity 36 KA, microprocessor based ( Ics=100% Icu) (iv) 01 No frequency meter (v) 01 Set of indicating lamps (RYB) (vi) Copper busbar TPN of suitable size and capacity 500 Amp with incoming and outgoing termination. (vii) Instrument fuses duly wired and ferruled. (viii) Digital type Power Factor meter (96mmX96mm) 4 wire, 3 phase, 0.5 lagging to 0.5 leading. (ix) KWH meter of suitable capacity ( 96mmX96mm) 4 wire, 3 phase for unbalance load. (x) MCCB of capacity 500A, 50 KA, adjustable type for short circuit protection of alternator. (xi) Wiring of panel with suitable size of copper conductor cable. (xii) Relay contactors and timers for auto function of DG Set shall be incorporated in AMF Panel. (xiii) Battery Charger : Battery Charger having electric circuit consisting of triodes, rectifiers, capacitor and resistance etc. The battery charger should be able to charge the battery at all the time wherever electric supply given to battery through control panel or electric power point as per OEM recommendation.

Supply, installation ,testing, commissioning of 'Silent type' with continuous operation diesel generating set alongwith having prime power rating of 200 KVA/160 kW at NTP, 415 Volt, 75 db noise level at 1 mtr distance from DG Set with suitable Engine to develop 200 KVA, AC 415 Volt at 1500RPM , 0.8 lagging power factor at 415 volts suitable for 50 hz 3 phase system and ,confirming to CPCB-IV norms / latest CPCB emission norms , acoustic enclosure, 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 shall be comprising of following item as under:

(a) Diesel Engine : The diesel engine shall be of four stroke cycle multi-cylinder, direct injection, water cooled, turbo charged, Air to air after cooling and optimised turbocharger for increased altitude capabilities, developing suitable BHP @ 1500 RPM under environmental 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. The engine shall confirm to IS:10000/BS:649/BS 5514.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 crankcase heater. (xiv) Oil drain Pump. (xv) Heavy duty air cleaner etc. Make of Engine:- Kirloskar/Cummins/Crompton Greaves

(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-IV compliant. 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 shall be provided.

(e) Hot air exhaust (Radiator cooling): As per OEM recommendation if sufficient exhaust for radiator is not available , the contractor has to provide GI duct for hot air exhaust from DG set up to designated place of duct outlet. The duct shall be made of 14 Gauge thick GI Sheet including necessary civil work.

(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 environmental condition of Leh with approx. capacity or designed capacity shall be suitable for 8 hrs continuous operation or 14 hours capacity at 75% load. In case the inbuilt base frame tank is not capable to hold POL for 8 Hrs continuous operation, contractor shall provide additional tank made up of MS Sheet capacity separately as per manufacturer recommendation. 

(g) Starting system :The engine starting shall be by means of totally enclosed axial type electric starter suitable for 12/24 volts DC starting system comprising of starter motor, voltage regulator and arrangement for initial excitation complete with suitable number of batteries as Per OEM Specification ,Sealed Maintenance Free (SMF) Lead-Acid type suitable for HAA Leh .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 suitable for environmental 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 of 0.8, 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 out put terminals of each Alternator shall be connected to an MCCB of suitable capacity microprocessor based , adjustable type through a cable system. The control Panel shall be housed inside the acoustic enclosure. Make of alternator :- Stamford/Kirloskar electric/Jyoti/Cummins Electric/Crompton Greaves 

(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 enclosure : The acoustic enclosure should be supplied along with DG set from the manufacturer outlet itself as per latest CPCB norm. Acoustic enclosure shall be of powder coated and fabricated out CRCA MS sheet. The canopy shall have 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/glass wool 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 absorbent 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. Note : The acoustic enclosure shall be made by the OEM of original engine Manufacturer of load.

(m) AMF Control Panel : AMF (Auto Mains Failure) control panel ( Indoor type), CPRI Approved, 3 phase, 4 wire, 50 cycles/s manufactured by approved OEM of engine manufacturer fabricated out of 2mm thick CRCA sheet cubical type, prewired with PVC insulated copper connection cable suitable size and powder coated for weather proof and long lasting finish including following accessories :- (i) 01 No AC Voltmeter 0-500 Volts flush mounting of size 100mm with selector switch, digital type. (ii) 01 No AC Ammeter 0-500 Amps flush mounting of size 100 mm with selector switch and CTs, digital type. (iii) 01 No MCCB 400 Amp, 4 pole, rupturing capacity 36 KA, microprocessor based ( Ics=100% Icu) (iv) 01 No frequency meter (v) 01 Set of indicating lamps (RYB) (vi) Copper busbar TPN of suitable size and capacity 500 Amp with incoming and outgoing termination. (vii) Instrument fuses duly wired and ferruled. (viii) Digital type Power Factor meter (96mmX96mm) 4 wire, 3 phase, 0.5 lagging to 0.5 leading. (ix) KWH meter of suitable capacity ( 96mmX96mm) 4 wire, 3 phase for unbalance load. (x) MCCB of capacity 320A, 35 KA, adjustable type for short circuit protection of alternator. (xi) Wiring of panel with suitable size of copper conductor cable. (xii) Relay contactors and timers for auto function of DG Set shall be incorporated in AMF Panel. (xiii) Battery Charger : Battery Charger having electric circuit consisting of triodes, rectifiers, capacitor and resistance etc. The battery charger should be able to charge the battery at all the time wherever electric supply given to battery through control panel or electric power point as per OEM recommendation.

Note for Item No 1 & 2 : (i) Cost of DG set foundation as per OEM recommendation is deemed to be included in cost of item.(ii) Contractor should submit necessary drawing to GE/Engineer-in-Charge before placing the order for approval. (iii) The Gen set must be affixed with label meeting the following requirement (The label shall be durable and legible) (a) Name and address of the engine manufacturer. (b)Certificate that the engine conforms to the CPCB IV emission/ latest CPCB emission norms shall be provided (c) Type and approval certificate number. (d) Date of manufacturing of Gen set. (iv) The complete DG Set including Engine / Alternator shall be factory assembled by manufacturer or its authorized OEM as approved for assembling of the DG set. A certificate in this connection shall be submitted to the GE. (v) Anything missed out above but technically required for efficient working of DG set at AF Station Leh (HAA) is deemed to be including in quoted rates. (vi) The quoted rate shall be deemed to be inclusive of first fill of engine oil (vii) The quoted rate shall be deemed to be inclusive of minimum 12 hours test run at site as specified in PS in presence of IEM/ rep of accepting officer, all testing arrangements / equipments for water load test/ suitable strip heater load 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/ latest CPCB Norms. (xii) Drawing for Plinth of DG Set shall be provided by OEM and approved by GE. Further the PCC foundation shall be made by the contractor and quoted rate is deemed to be included this provision. (Xiii) The DG set shall be suitable for operation in high altitude and in extreme climatic conditions ( Temperature dropping upto -20°C during winter) prevalent in Leh, Ladakh. (xiv) The DG set shall be placed inside RCC building/ DG Set room and the de-rating ( if any) due to this may be taken care of by the manufacturer to achieve the desired output power as stipulated above. (xv) The existing foundation shall be broken and waste material shall be disposed off and new foundation shall be provided as per OEM recommendation. The rates for the same should be included in the quoted rates.  

Supply, laying and testing cable XLPE Insulated ,screened, PVC bedded, galvanized steel strip or wire armoured, electric power cables (heavy duty) 1100 Volts grade, ISI Marked with stranded aluminium conductor of size,3.5 core 400Sqmm complete all as specified and directed.

Supply, laying and testing cable XLPE Insulated ,screened, PVC bedded, galvanized steel strip or wire armoured, electric power cables (heavy duty) 1100 Volts grade, ISI Marked with stranded aluminium conductor of size,3.5 core 150Sqmm complete all as specified and directed.

Material and labour for LT distribution panel, CPRI approved, made out of 3.15 mm thick MS sheet, powder coated, dust & vermin proof, IP-66 Protection, Outdoor type factory made cubical totally enclosed type with front and rear door opening as per engineering practice provided with locking arrangement for opening of panel with provision of separate chamber in upper part to enclose Copper busbar of cap 630 Amps, TPN on epoxy insulators in horizontal position and stepped manner with min 20cm distance between bus bars & panel body and 06 Nos separate chambers of adequate size embedded in 40mm thick PCC 1:2:4 type B-1 (using 20mm graded aggregate), on angle iron of size minimum 40x40x6mm with footing 30 cm clear space between bottom of panel and flooring including all accessories prewired with insulated copper wires of suitable size. The panel shall compromise of the following fittings and fixture: INCOMING : (a) MCCB Four pole 500 Amps Icu =36 KA at 415 volts with microprocessor release - 01 No (I/C) It should be with adjustable over load setting Ir = (0.8 to 1.0) x In,Ics = 100 % Icu and with adjustable thermal setting, front face with positive break indication with double break contacts, Standard extended rotary handle, Spreaders, Phase barrier, single phase preventer etc (b) ON LOAD change over switch 415V, front operated 4 pole of capacity 500 Amps complete all as specified and as directed. OUTGOING (i) MCCB Four pole 250 Amps Icu =36 KA at 415 volts with thermal magnetic release - 02 No (O/G) .It should be with adjustable over load setting Ir = (0.8 to 1.0) x In, Ics = 100 % Icu with positive break indication with double break contacts, Standard extended rotary handle, Spreaders, Phase barrier etc. (ii) Indicating lamps Led type (RYB). (iii) Digital Voltmeters 96 X 96 MM -01 No (vi) Digital Ammeters 96 X 96 MM with suitable CT ratios -01 Nos

M& L for Cable jointing kit for 1.1 KV (Earthed) grade LT cable for end termination heat shrink type joint complete with jointing material and accessories suitable for 3.5 core XLPE armoured aluminium conductor cable of size 150 sqmm, indoor type complete all as specified and as directed by Engineer-in-Charge.

M& L for Cable jointing kit for 1.1 KV (Earthed) grade LT cable for end termination heat shrink type joint complete with jointing material and accessories suitable for 3.5 core XLPE armoured aluminium conductor cable of size 400 sqmm, indoor type complete all as specified and as directed by Engineer-in-Charge.

M&L for Earthing complete with galvanised steel earth plate electrode 60cmx60cmx6mm thick buried directly in ground (earth pit not less than 2.25 M deep below normal ground level) with top edge of plate not less than 1.5 M below normal ground level, connecting to the 25X4 mm GI strip as earthing lead by means of bolts, nuts, check nuts and washers of galvanised iron and earth strip protected by provision of GI light grade pipe 40mm bore including provision of concrete pit in PCC (I:2:4) type B-1 using 20mm graded stone aggregated with 40mm thick cover of RCC (1:2:4) reinforced with XPM (weight not less than 4 Kg/Sqm) and frame of angle iron 40x40x6mm with lugs 02 Nos and handle of 6mm dia MS bar made to shape, GI light grade 20mm bore pipe for watering, perforated at bottom and connecting to earth test point complete all as specified and directed.

Note : Schedule of credit for Rs. 6200.00 to be deducted on acceptance of bid.