RENEWAL / REPLACEMENT OF EXTERNAL ELECTRIC SUPPLY EQUIPMENT AGAINST BER AT NAD SUNABEDA

Amount

Supply, installation, connecting, commissioning and testing of 400 KVA capacity step down transformer, outdoor type 11 / 0.433 KV, AC 3 Phase 50 HZ floor or platform mounted complete with standard fittings / fixtures, OCT (+7.50% to -7.50% @ 2.5 (at no load) double core type, copper wound, oil immersed, air naturality cooled with external cooling tubes, builtup with Class 'A' insulation having primary voltage (HT) 11 KV and secondary voltage (LT) 433 volts, delta connected on 11 KV side and star connected on 433 volts side, designed and constructed with particular reference to tropical condition, conforming to IS-1180 (Part 1)-2014 with energy efficient of "Level 2" with latest amendment on existing norms and equivalent ICE 62270. The voltage regulation shall be as per IS and including first fill of transformer oil as per IS-335 upto required level and tested upto 60 KV with all fittings / accessories as specified in SSR Part-1 and IS-1180. The transformer should have cable termination box and porcelain bushing with brass rods with suitable washers, bolts etc on LT side and HT side comprising of the following Specification and Fittings and including disconnecting electric connection from existing transformer of any capacity and taking down from foundation, loading / unloading the transformer to the vehicle and deposit to MES store yard complete all as specified and directed :-.

(a) The limit of temp rise after continuous full load run as specified in SSR Part-1 and IS-1180 shall be suitably adjusted to suit the maximum ambient temp prevailing at site. (b) Radiators shall be hot dip galvanised (HDG) to avoid corrosion with latest amendment and comprising of the following specification and fttings and including providing HT cable XLPE insulated 120 sqmm 3 core with required length of GI protection pipe of approx. 16 RM length, end joints on both ends from two / four pole structure to transformer and connecting to existing cables on LT side by releasing loop, replacement of lugs, connected to existing / new earthings etc,.

(c) Continuous rating - 400 KVA No load voltage ratio : 11 KV / 433V Tapping on HV (%) : + or - 7.5 @ 2.5 at no load Phase & freuquency : 3 Phase & 50 HZ Connection : Delta, Star Vector Group : DYN 11(vector group 4) Cooling : ONAN Type : Outdoor

i) Lifting lugs / hooks and and jack lifting pad support for transformer and tank ii) Earthing terminals and rating and diagram plate. iii) Air release device iv) Oil filling inlet pipe with plug and drain out pipe with brass gate valve and dummy plug. v) Oil conservator with filter type drain valve and oil level guage. vi) Explosion vent with double diaphragm and sight glass. vii) All necesary arrangements with devices for measuring the temperatures of core, winding and oil. viii) In addition to the above all standard fittings shall be provided as IS norms and including shut off valve between conservator and main tank.. ix) Thermometer Pocket. x) Two earthing terminal on tank body to facilitate fixing of 32 x 6 mm GI strips.

xi) One No. thermometer dial type vapour pressure type having range 0-120 degree centigrade with maximum temperature indicator and re-setting device to maximum temperature including needle of temperature guage: Max reading pointed terminal. xii) Rating plate with terminal marking plate. xiii) Oil filling pot on top cover with plug. xiv) Inspection cover. xv) Bi-directional plain / flanged rullers. xvi) Breather assembly with silica gel or with connecting pipe, first fill of dehydrating agent. xvii) Hand hole of sufficient size to assess the interior of the tank. xvii) Sample valve. xix) Extra bushing for neutral out side the LV side.

All as per item No. 01 above but of capacity 250 KVA.

All as per item No. 01 above but of capacity 100 KVA.

Supply, Installation, testing and commissioning of Silent engine generator set with accoustic enclosure as per latest CPCB-II norms, 415 volts 62.5 KVA, 3 Phase 0.8 power factor 50 Hz, 1500 RM self excited self regulated brushless AC generator and including accoustic enclosure suitable for ambient condition and conforming to IS 4722, BS 5514/2613/5000 comprising of the following Specification and Fittings and including disconnecting elctric connection from diesel engine driven generating set of any capacity, taking down the existing generater with all fittings from foundation, loading / unloading the generator to the vehicle and deposit to MES store yard any capacity complete all as specified and directed :- (i) The capacity of Generator set shall be net after all due de-rating factors are per relevant ISI design. (ii) Rate quoted shall be deemed to be inclusive of cable and terminations from Generator to the AMF panel, with necessary holes to wall and including making good to distrubed surfaces so as to match with the existing finishes and first fill of oil and final successful acceptance test .

(A) Alternator : Standard design alternator rated at 62.5 KVA net output at site after considering de-rating as per site conditions at 0.8 (lag) power factor AC, 3 phase 4-wire 415 volts 50HZ, 1500RPM, self excited self regulated screen protected drip proof enclosure brushless design with winding in pile faces insulating class 'H" and voltage regulation of +/- 1% at rated voltage from no load to full load. The laternator shall be conforming to BS 2613/5000 and shall be imposition to generate supply with frequency regulation with in +/- 1% tolerance. The alternator will be suitable for tropical climate annd shall generally conformtion BS-2613/5000/IS-4722. (i) Insulation class-'H' (ii) Temperature rise Class-"H' (iii) Excitation:Self Excited (iv) Regulation performance: The voltage is kept constant with +/- 1%, manual voltage adjustment within+/-5% (v) (v) Frequency regulation +/-1%.

(B) Diesel Engine : Adequate capacity of Diesel engine as accousted by the accepting officer basing on manufacturers technical details water cooled to drive independently above alternator and after considering de-rating as per site conditions after generating and reducing power consumed by accessories directly coupled through flexible coupling multi cylinder multi stroke direct injection, cold starting 1500 RPM, as per relevant ISI/BS-5514 with an oveload capacity of 10% for half an hour in 12 hours continuous running complete with standard acessories and required for safe handling and operation salient features of accessories shall be as under:- (i) Fly wheel with housing (ii) Cooling system: Moulded with fan & belts (iii) Cooling Water Pump :- Centrifugal type belt driven. (iv) Exhaust System:-Exhaust System complete with exhaust piping of suitable size dia with MS pipe light grade upto & outside and 1 meter away from the enclosure and outside of wall, covered with asbestos rope and aluminium foil of 28 SWG complete within the enclosure for safe exhaust without transforming vibration to the wall of the enclosure. Exhaust gas turbo charger type. Exhaust manifold, Silencer:Residual type Bellows.

(v) Fuel system:- Fuel injection system with fuel injectors, fuel injection solenoid switch controlled by electronic governor for 1% speed / frequency regulation, fuel filters, fuel hoses. (vi) Lub oil system : Lubricating oil filter Lubricating oil pump (vii) Air Intake System : Air Intake System Manifold, Air cleaner dry type. (viii) Governor:- Electronic Governor (ix) Starting System:-Electric Self starter with maintenance free battery including battery charging alternator

(x) Batteries:-Batteries of maintenance free of capacity as recommended by the manufacturer complete with copper conductor multi stranded leads of suitable length from self starter to the battery terminals complete with initial charge and initial fill of electrolyte all as specified and Starter gear ring Start and stop push button, Ignition key/switch. Handling and operation: Sailent features of accessories shall be as under: Radiator with blower fan. Corrosion inhibitor coolant, Paper element filters for fuel, lub oil and by pass, electronicgovernor controlled direct fuel injection system, Fly wheel housing and fly wheel. (xi) Generator Mointoring Panel:- Comprising of all standard items as mentioned under this schedule or as per standard practice iginiton key switch and start / stop arrangement, indications for engineer parameters, hour run meter, RPM meter, Engine oil pressure indicator, water / coolent temperature indicator, Battery volt display.

(xii) Safety Controls:- Engine low lube oil pressure high water temperature and over speeding of engine. (xiii) Coupling arrangement:-Flexible coupling, fly wheel to suit flexible coupling. (xiv) Accessories:-AVM Pads built in enclosure and for entire unit on platform. (xv) Base Frame:- Should be provided as OEM norms

(C) AMF Panel: Factory made outdoor type control cubical made out of 2 mm thick CRCA sheet dust and vermin proof totally enclosed with front opening of 415 volts 3 phase 4-wire AC 50Hz, including powder coated, copper bus bar of one and half times the rated load of 62.5 KVA alternator complete with internal wiring with PVC insulated single core copper conductor multi stranded wire of 1100 volts grade of suitable capacity, fuses, name plates consisting of 4 pole MCCBs and Contractors of capacity as recommended by the manufacturer. Detachable cable gland plates all controls, indicators and standard microprocessor based LED / LCD display for indicating voltage, current, frequency, speed, KW, kWH, pf, temperature, battery voltage etc.

(D) Accoustic Enclosure:- Manufactured by OEM suitbale for 62.5 KVA DG set (i) NAL apporved as per latest CPCB-II norms (ii) It should be as per latest rules and regulations of Ministry of Enviroment and forest and pollution control board (iii) The generating set batteries and control panel should be inside the enclosure (iv) Fuel tank should be inside enclosure of DG Set. (v) Construction details/specification are as follows:- (a) Outer body:-CRCA Sheet of 2mm thick (b) Doors:-CRCA sheet of 2mm thick (c) Sound Insulation-As per OEM Norms (vi)The accoustic should be composite in construction and fully assembled integral unit.

(vii) The batteries should be placed inside the enclosure beside the DG set on a suitable insulated platform. (viii) The fuel tank is to be located in accoustic enclosure and cost of the fuel lines is deemed to be included in the offer. (ix) The DG set should be provided with external Emergency stop push button. (x) The enclosure should be suitably illuminated by CFL/FTL Lamp fittings (xi) The noise level should be 75 dba at 1m under free field conditions (xii) The accoustic enclosure parts shall be of powder coated after pre treatment process. The powder coating shade should be Gen set Green. The base frame should be painted with epoxy based black shade.

M&L earthing complete with galvanised steel earth plate electrode of size 600 x 600 x 6 mm thick buried directly in ground in vertical position (earth pit not less than 2.25 m deep below the normal ground level) with top edge of the earth plate not less than 1.5 m below normal ground level, connected to galvanised iron earth strip of 32 x 6 mm by means of bolts, nuts, check nuts and washers of galvanised iron or steel, all as shown in electrical plate No. 3 connected to earthing test point complete all as specified and directed. Note:- The unit rate shall also include for earth work in any type of soil, PCC 1:3:6 type C1 chamber, RCC 1:1.5:3, type A1 cover slab, 50 mm thick reinforced with 8 mm dia TMT bar @ 140 mm C/C both ways, 10 mm dia plain bar lifting handle embedded in cover slab, 20 mm bore medium grade GI watering pipe, 15 mm bore GI light grade earth lead protection pipe, funnel, wire mesh, copper lugs, charcoal and common salt in alternate layer etc.

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SMART ENERGY SOLUTIONS

AYYAPPA CONSTRUCTIONS