PROVISION OF MOBILE DG SET AND MOBILE TRANSFORMER AND ALLIED WORKS AT AF STATION LAITKOR PEAK UNDER GE (I) (AF) SHILLONG

Amount

Supply, install, testing and commissioning and testing of outdoor type,Transformer 200 KVA capacity step down with dual ratio on HT side 11/0.433 KV at no load 3 phase , 4 wire AC, 50 Hz, AC double wound core type copper wound ,oil immersed ,air natural cooled with external cooling tubes ,transformer delta coonection on HV Side and star coonection on LV side in accordence with vector symbol Dyn-II with neutral brought out on secondary side and having tapping in step of 2.5% ,5% ,and 7.5% to be changed by means of hand operated off load tap changing gear arrangement including first fill of transformer oil as per IS -335 and including all fitting /accesories as specified in SSR Part -I and IS -1180 Part I/2014 (revised)/ IS:2026 BEE Star rated energy saving.( Energy efficiency level -3) Transformer should have cable box on LT side and brass bushing on HT side ,oil temprature guage ,dehydrating breather with first fill of dehydrating silica gel ,oil conservator tank ,explosion vent ,rating and terminal marking plate, oil level guage ,oil drain and filter valve ,independent earth point and neutral fittings ,earth terminal at bodybase ,voltage regulation should be as per IS and limit of temp rise after contineous full load run as specified in SSR part -I and IS- 1180 Part I (revised)/ IS:2026 shall be stand by adjusted to suit the maximum ambient temp prevaling at site all as specified comprising with the following specification :-

(a) Oil conservator tank with fillings holes and cap filter type drain valve and oil level gauge. (b) Silicagel breather with connecting pipe, first fill of dehydrating agent. (c) Explosion relief mounted on tank with double diaphram and equalizer pipe connected to conservator air tank (pressure release valve). (d) Air release valve plug. (e) One cable box on LV side (Secondary) consisting of 04 Nos porcelain bushing with nuts, washers & bushing rods with 01 cable gland suitable for reception of taking out suitable size cable, including gland joints complete all as specified. (f) Explosive vent. (g) 01 No 100 mm dial type thermometer vapour pressure type having range 0-120 degree centigrade with max temp indicator and resetting device incl max reading pointer washer etc. (h) Thermometer pocket on tank cover. (j) 04 Nos plain solid CI dtachable rollers. (k) Two Nos Earthing terminals marking plate. (l) Rating plate and terminal marking plate. (m) Extra bushing for neutral outside the cable box brought out on LV side. (n) First filling of oil conforming to IS and tested upto 60 KV dielectric strenght.

(o) Lifting lugs. (p) Oil drain valve with plug. (q) One cable box on HV side (Primary) consisting of 01 cable gland suitable for reception of taking in HT cable including gland joints complete all as specified. (r ) Hand hole of sufficient size to assess interior of tank. (s) Dehydrating breather with first filling of Dehydrating agent. (t) Two earthing of terminal on tank body to faciliture fixing of 32x6mm GI strip. (u) Rating plate with terminal marking plate. (v) Inspection cover. (w) Extra bushing for neutral out side the LV side. Note:- (i) Anything missed above but is required for efficient functioning of transformer is deemed to be included in the quoted rate. (ii) Full load testing shall be done at site. The artificial load shall be arranged by contractor. This is included in above quoted rate. Note: (a) Testing and commissioning of transformer shall be carried out by SEI/EI (as decided by HQ CE (AF) SZ) from HQ CE (AF) SZ before issue of completion (b) The contractor shall produced printed GST purchase voucher alongwith all such tests as specified here-in-before and after for necessary payment

Supply,testing and commissioning of Silent/containered Diesel Engine Generating set with standard AMF panel 415 volts 125 KVA/100 KW 3-Phase 0.8 power factor 50Hz . 1500 RPM self Exicited self regulated brushless AC generator installed including accoustlic enclosure suitable for ambient condition at site and confirming to condition under IS 4722/1460, IS 10001/10002, BS 5514/2613/5000 ISO 8526/3046 with and including following :- (A) Alternate :- Standard Design alternator rated at 125 KVA net output at site after considering derating as per site conditions at .8 (lag) power factor AC, 3-phase 4-wire 415 volts 50Hz , 1500 RPM,self exicited self regulated screen protected drip proof IP 23 Enclosure Brushless design with winding in pole faces, insulating class 'H' and voltage regulation of + 1% at rated voltage from no load to full load The alternator shall be confirming to BS 2613/5000 and shall be inposition to generate supply with frequency regulation with in + % tolerance. The alternator will be suitable for tropical climate and shall generally confirm to BS-2613/5000/ IS -4722. (i) Insualation class - 'H' (ii) Temparature rise class - 'H' (iii) Excitaion : Self Excited (vi) regulation performance : The voltage is kept constant with + 1%, manual voltage adjustment within + 5%. (v) Frequency regulation + 1% (B) Diesel Engine :- Adquate capacity diesel Engine suitable for 125 KVA coupled Drive independently above alternator and after considering derating 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 1500RPM, as per relevant ISI/BS-5514 with an overload capacity of 10% for one hour in 12 hours continuous running complete with standard accessories all as per specified and required for safe handling and operation. Salient features & other outer accessories of DG Set shall be as per under:-

(i) Fly wheel with housing (ii) Cooling system :- Mounted radiator with fan & belts. (iii) Cooling water Pump :- Centrifugal type belt driven (iv) Exaust System shall be as per design of manufature and mounting of exhaust pipe shall be as per site requirment. (v) Exhaust manifold Silenser : Residential type Bellows (vi) Fuel System :- Fuel injection system with fuel injector, fuel injection solenoid switch/ nozzles/ governer electronic type capable 1% speed /frequency regulation. fuel filtters fuel hoses (vii) Lub oil system:- lubricating oil filtter lubricating oil pump. (viii) Air intake system :- Air intake manifold Air cleaner dry type (ix) Governer :- Hydro Mechanical /Electronic Governer (x) Starting system:- Electric self Starter with maintenace free batteries including battery charging alternator. (xi) Batteries:-01 No Maintenece free Battery of 12Volts 180 AH capacity complete with copper conductor multistrnded leads of suitable length from self starter to the battery terminals complete with initial charge and initial fill of electrolite all as specified. Make Starter gear ring Start/stop shall be as per manufacturer design with latest technology. Handling and operation : Salient features of accessories shall be as under : Radiator with blower fan Corrosion inhibitor coolant Paper element filters for fuel, lub oil Fly wheel housing and fly wheel.

(xii) Generator Monitoring Panel: comprising of following (a). Microprocessor based genset controller for metering, monitoring, governing and protection (b).Engine protection for low lub oil pressure, high coolant temperature (alarm & shutdown) (c).Alternator protection parameters like under voltage, over current, under frequency, over freqency (alarm & shutdown) (d). Relay drivers for remote annuciations (e). Cyclic cranking (f). Auto/manual start/Stop (g). Alternator trim adjustment from the front key pad (h).Operators within a temperature range 0-50 celsius and humidity upto 95% (j). Remote monitoring capability through separete modules (k).Genset metering parameters like lube oil pressure, coolant temperature, engine speed(rpm), run hours , DC voltage, 3 phase volts and 3 phase amperes, frequency, KW, KVA, Power, power factor (xiii) Safety controls:- Engine low lube oil pressure, high water temperature and over speeding of engine. (xiv) Coupling arrngment :- Flexible coupling/close coupling as per manufacturer design. (xv) Accessories :- AVM pads as per manufactrer design. (xvi) Base frame made out of MS channel as per manufacturer design. (xvii) Fuel Tank :- Daily Services fuel tank of capacity suitable for 8 hrs continous operation made out of 3mm thick (Heat Retardant) sheet top and bottom with caliberated level including arrangement, stop cock, drain plug, fuel pump of suitable capacity and connected pipe line should be installed with inbuilt tank inside accoustic enclosure is inclusive of the cost of DG set and as per manufacurer design.

(xviii) Deliveriables:- confirms the norms established by CPCB. Note: Making of plinth as suitable for fixing of DG Set. NOTE:- The following items are deemed to be include in the rate quoted for DG set (i) The capacity of generator set shall be net after all due derating factors as per relevant ISI standard. (ii) The quoted rate shall be deemed to br inclusive of first fill of lubricant oil and final successful acceptance test. (iii) The qouted rate shall be deemed to be inclusive of 12 hours test run at site including of one hour on 10% overload in presence of representative detailed by accepting officer, all arrangements are to be made by the contractor for tests. (iv) DHPP for testing purpose shall be supplied by the contractor without any extra cost to govt. (v) The contractor shall arrange for artificial load for testing for final testing of DG set at site and the cost is deemed to be including in above offer.(vi) Sound Proofing System: The sound proofing system shall be designed to achieve noise reduction as per relevant norms. (vii) Standard documents as per manufacturer specification such as maintenance & operation manual, parts calalogue, display charts such as maintanance and oil change chart/board (for generator and diesel engine ) and log book as directed by Engineer-In-charge. Note: (a) Testing and commissioning of DG shall be carried out by SEI/EI (as decided by HQ CE (AF) SZ) from HQ CE (AF) SZ before issue of completion. (b) Factory test before delivery of DG from the Manufacturer Unit must be needed and necessary test certificates shall be produced after satisfying visit. Contractor shall be forwarded a letter for such visit before the visit to nominate a suitable person for such visit as decided by GE in writing. (b) The contractor shall produced printed GST purchase voucher alongwith all such tests as specified here-in-before and after for necessary payment

Supply and laying, connecting, testing, commissioning HT UG cable XLPE insulated, screened, PVC bedded, galvanised steel strip or wire armoured, electric power cables (heavyduty) with aluminium conductor, 11000 volts Earthed, grade cross sectional area 70 Sqmm 3.0 Core laid in trenches / ducts/ inside protection pipeincluding cable glands, lugs and suitable size of MS saddle clips etc. all as directed by Engr-In-Charge. Note:-(a) Excavation, sand cushioning, bricks if required the same shall be measured and paid including this item (b) The contractor shall produced GST purchase voucher to the Engineer-In-Charge for future reference.

Supply and laying, connecting, testing, commissioning LT UG cable XLPE Insulated,armoured, electric power cables (heavy duty) 1100 Volts grade conforming to IS 7098 with aluminium conductor multi-strand of cross-sectional area 120 Sqmm 3.5 Core laid in trenches / ducts/ inside protection pipeincluding cable glands, lugs and suitable size of MS saddle clips etc. all as directed by Engr-In-Charge. Note:-(a) Excavation, sand cushioning, bricks if required the same shall be measured and paid including this item (b) The contractor shall produced GST purchase voucher to the Engineer-In-Charge for future reference.

Supply and fix Cable jointing kit for 11 KV (Earthed) grade cable for outdoor termination heat shrink type joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 50 to 95 sqmm,complete all as specified. Note:- Contractor shall produced original GST purchase vouchers to the Engineer-In-Charge for any future reference.

Material and labour including fabrication of trolley for 200 KVA transformer, factory febricated manufactured of MS steel, angle irons, channels etc duly painted as per load class recommended by manufacturer with four wheels and one spare wheel, hydraulic jack, toe rod/chain air filling pump. four wheel drum break system spring loaded drawbar, leaf spring based suspension system provn for idling screw jack 04 Nos for levelling of transformer etc complete all as per drawing. Note: Drawing is hereby attached.

Material and labour including fabrication of trolley to accommodate 125 KVA DG set, including HT & LT cables and with overall size not less than 2.30 mtr x 3.10 mtr using MS channel of size 100 mm x 50 mm and angle iron 50 mm x50 mm x6 mm and MS flat wherever required including top and base of MS sheet 10 gauge fixed properly welded on chassis including fencing all around with MS angle iron 40 mm x40 mm x6mm and MS flat 40 mm x40 mm x6 mm with XPM mesh, cage not less than 1.80 mtr high cage should be with open able door with locking arrangement at front side duly painted with two coats of synthetic enamel paint over a coat of red oxide steel primer, with towing hook of channel/angle iron, fixed with trolley for easy movement from one place to another place. It shall not be less than 1.25 mtr length from the body of trolley complete all as specified and directed. (a) Supply & fixed tyre tubes of size 7.50-16 Super Lug Fifty Plus-R N16-16 PR (Tyre + Tube + Flap) on suitable size of wheel drum - 04 Nos (Make - MRF/CEAT). (b) Supply & fix leaf spring set of 13 Nos with U clamps -04 set suitable to take full load of trolley and transformer. (c) Supply & fix axle - 02 Nos between front & rear wheel. (d) Supply & fix danger notice plate/board of 11 KV on each side of trolley - 04 Nos (e) The cost of MS work required for fixing of DG set like vibration damper, its MS iron or any other suitable foundation on the trolley and all other items which are required for static & dynamic balance during its operation as per Indian Standard should be included in the quoted rate by the contractor. Note:- (i) Any other work/item not mentioned above but necessary for smooth functioning of the trolley shall be included in the rate quoted by the contractor

MAHINDER ELECTRICALS (BID ID -3331194)

M/S DIL SINGH BISWA AND CO (BID ID -3332406)