SPECIAL REPAIR/ REPLACEMENT OF BER DG SET AND CONNECTED WORKS IN TECH AREA AT AF STN GWALIOR

Taking down of existing 18.75 KVA DG set and AMF panel including all the electric connectons and shifting of the same to the MES Store with all necessary electric connections , complete all as specified and directed by Engr-in-Charge.

Supply, commissioning, erecting, and testing complete of OEM-manufactured, static, silent (sound proof enclosure) Diesel Engine-driven Generating set of capacity 20 KVA, water cooled, 415 volts (AC three phase, 4 wire system of supply) 50 Hz at power factor 0.8 minimum. The DG set shall consists of diesel engine coupled to a matching alternator, through flexible coupling and mounted on common base frame and complete with control panel standardized by manufacturer, of adequate capacity for 8 hrs running fuel tank with mounting arrangements and inlet, outlet return inlet oil arrangements, exhaust pipe complete and suitable for conditions prevalent at Gwalior (capacity of engine, alternators shall worked out considering all derating factors) including foundation (of suitable size leaving at least 0.5m all around for ease of movement and 0.5m height) as per manufacturer recommendation, anti-vibration pads complete all as specified and directed, confirming to emision norms of latest CPCB 4 + guidelines and comprising of followings:-

DIESEL ENGINE Diesel engine 1500RPM, direct injection, multi cylinders, four stroke, conforming to conforming to IS:100001/ISO3046/BS:649/BS:5514 amended upto date, for continous running capable of taking 10% overload for one hour in 12 hour, water cooled, naturally turbo charged, capable of giving adequate BHP to drive Alternator capable of delivery 20 KVA at outdoor atmospheric conditions at Gwalior (Considering all derating factor) fitting with the following accessories subject ot the design of manufacturer:- (i) Dynamically balanced fly wheel. (ii) Air cleaner oil bath type (iii) Electronic Governor class 1 A with back up Mechanical governor class 1A Flywheel with starter ring (iv) Dry exhaust manifold with suitable exhaust residential grade silencer to reduce the noise level (v) Radiator cooling (vi) Radiator fan with guard (vii) Vaccum indicator (viii) Fuel filter and fuel houses (ix) Fuel injection pump (FIP) (x) Fan and water pump assesembly (xi) Lub oil filter and pump (xii) Electric starting system with battery charging alternator and axial type started motor including adequate number of high capacity maint free lead acid bty as per manufacturer recommendation including inter connecting cables/leads with terminals complete with starting/stopping switch voltmeter, etc 01 set (xiii) Engine safety shut down system against low oil pressure and high water pressure (xiv) Exhaust gas driven turbo charge (xv) Oil filter (xvi) Lub oil cooler (xvii) Engine maintenance manual with spare part list (xviii) Suitable designed acoustic enclosure as per CPCB regulations (xix) Any other item not included / specified but is a standard design of the manufacturer/required for commissioning/satisfactory operation of DG set.

Engine instrument panel : Engine instrument panel shall comprising of the following:- (i) Starting on /off switch. (ii) water temp auge. (iii) Hour meter cum RPM indicator (iv) Lub oil pressure gauge (v) Lub oil temperature gauge (vi) Battery charging meter (vii) Safety alarm against high water temp and lub oil pressure. (viii) Any other item not included/specified but is a standard design of the manufacturer.

ALTERNATOR shall be self excited, self regulated, brush less for 20 KVA continous operation at the speed of 1500RPM at 415 volts, 50Hz three phase, 4 wire system with advance electronic voltage regulator to ensure high voltage accuracy with +1% with class H insulation and SPDP enclosure directly coupled with engine through flexible couping and conforming to IS-4722 complete-01 No. Note:- Alternator should be able to deliver output rating at actual site condition. Note :- (i) Common fabricated base frame for engine and alternator made from structural channel, jerk proof PCC 1:2:4 mix type B1 for foundation including adequate number of suitable anti-vibration pads all as per manufacture recommendations is deemed to be included in the unit rate quoted by the contractor. (ii) Bottom mounted (or as per manufactures design) steel fuel tank fabricated out of 14 SWG MS sheet of capactiy not less than 12 hrs continous operation inside canopy with fuel level guage, drain plug locking arrangements etc with and including GI pipe connections duly laid as per engineering practice shall be deemed to be included in the unit quoted rate by the contractor. (iii) Any other item not included/ specified but is required as per standard design of the manufacturer is also deemed to be included in the unit rate quoted by the contractor..

Supply, installation, commissioning and testing of a seperate AMF panel Outdoor type, Doubledoor , cubical type front operated, totally enclosed, dust and vermin proof, floor mounted with suitable PCC base foundation ,made out of CRCA sheet 3.15 mm thick , powder coated with all control wiring, from front oprated panel shall have provision for termination of UG cable for incomming / outgoing and necessary gland plates including cable termination with cable glands shall be provided at bottom of the panel suitable for DG set 20 KVA,415V, 3 phase 50 Hz 4 wire system including Auto main supply failure monitor (AMF) control relays, voltage & current sensors, supply failure timer, restoration timer control unit incorporating automatic engine start/stop/Auto/manual/test, indicators for load/mains status with announciator, Push button for engine start/stop, 63 Amps 4 Pole Power contactors with OLR relay - 02 Nos and MCCB 4 Poles 63 Amps 25 KA rating with ics=100%icu with adjustable thermal over load and magnetic short circuit releases - 2 Nos, with in build seperate chamber for On load change over switch with the the same having capacity of 63 Amps - 02 Nos ( for Main & DG by pass system), Copper busbar having 100A rating for phase & Neutral which is duly insulated with proper colour coding , One battery charger in built for charging batteries with 12V 20A SCR Controlled Battery Charger , selector switch and DC voltmeter & Ammeter all as specified and directed by Engineer-in-charge. Note : Necessary PCC for base foundation deemed to be included in the quoted rate.

Supply, laying and testing cable XLPE Insulated ,screened, PVC bedded, galvanized steel strip or wire armoured, electric power cables (heavy duty) 1100 Volts grade with stranded aluminium conductor of size 70 sq mm 3.5 core complete all as specified and directed.

Excavation in trenches n exc 1.5 mtr wide and n exc 1.5 mtr depth for foundation and laying of cable and getting out in any type soil etc complete all as specified and directed.

Returning, filling in, including spreading, levelling watering and well ramming in layers n.exc 25cm in soft/loose soil etc complete as specified and directed.