Double Pole HT Grand Library Coimbatore

Supply and erection of Double pole 11 KV H.T Structure of 33 feet 200 x 100x5.7mm R.S Joist with 10 feet centre to centre on either side with necessary MS angles ,cross bracing and mass concreting of poles to received the 11 KV supply with following HT accessories complete as per Central Electricity Authority (measures relating to safty and electric supply ) regulation a) 2Nos, 33feet length, 200 x 100 x 5.7mm R.S Joist poles and base plate of 300 x 300 x 6mm with concreting and coping. b) One set of 1Nos 11 KV lighting arrester mounted on suitable channel iron size 4”x2”x1/2” complete.

c) One set of 3 Nos. 11 KV pin insulator fixed on suitable channel iron from work complete for supporting copper jumper. d) One set of 3 Nos. 11 KV DO fuses complete with insulator on channel iron support. e) Two nos. of stay arrangements with guyshakle insulators with necessary masonry work . f) Supply and fixing of required cross bracing made of size 2 ½ x 2 ½ x ¼ “ MS angle to keep the structure balance.

g) Supply and fixing of required cross bracing made of size 2 ½ x 2 ½ x ¼ “ MS angle to keep the structure balance. h) Providing H.T connections & jumper connections from supply point to the 2pole structure with ACSR conductor/ Zero HDBC conductor for giving necessary connections and jumpering from 22KV strain Disc insulators to AB switch operating rod, AB switch to lighting arrestor & DO fuse through insulators and G Fuse to post top insulators & pin insulators complete with colour coding. i) Supply and fixing of 2 Nos. 11 KV metal danger boards. j) Painting the structure complete with primary coat of red oxide and two coats of alu. paints.

k) Fencing: supply and Fixing of fencing with 10 SWG GI chain link fencing of size 10mm x 10mm, 10 SWG lacing with MS post of size of 50mmX50mm with suitable channel/ stiffeners at the top of the chain linked fencing provided around the TANGEDCO's DP structure yard and the SS yard at point of supply and the lacings fastened to the top channel with painting of complete strcuture with a primary coat of red oxide and two coat of good make aluminium paint and etc as directed by the departmental site officers.

Supply and fabrication of exhaust duct for DG upto 100 ft as per CPCB/ CAQM norms and as recommended by manufacturer complete all as specified and directed. Exhaust pipe thermal insulation and cladding for 350 mm dia pipe (Considered mineral wool insulation of density 48kG/m3 with 50mm thick with GI chicken wire mesh & 24swg Al sheet). DG Exhaust stack angle channel plate and etc., 14" (350mm dia) inch pipe ERW "B" class pipe, 10" (200mm dia) inch pipe ERW "B" class pipe, 14" pipe cladding (24SWG Alumunium sheet and 48mm density Rockwool 50mm thick ), 10" pipe cladding (24SWG Alumunium sheet and 48mm density Rockwool 50mm thick ), Silencer cladding (24SWG Alumunium sheet and 48mm density Rockwool 50mm thick), Extension bellow 14", Extension bellow 10", Stack and Pipe painting charges, Stack Erection and transport charges

Supply and installation of factory-fabricated fixed blade type ,air cutting ,mild steel louvers of 230 mm depth with 45 degree inclination, bird mesh at rear, painted with red oxide primer and enamel top coat,. Louvers shall have a front surface area of 50% more than the hot air exhaust opening of the DG enclosure . Size and quantity as per site layout and airflow requirement complete all as specified and directed. Note:- 1. The louvers to be provided at hot air exhaust as well as fresh air inlet. The item to be measured as per actual surface area.

2. The cutting of wall/window/ventilators and making good Exhaust Piping : All M.S. Pipes for exhaust lines shall be conforming to relevant IS. The work includes necessary cladding of exhaust pipe work using 75 mm thick Light resin bonded(LRB) Rock wool mattress,density not less than 100 kg/m3and aluminium cladding (0.6 mm thick) for the complete portion. The exhaust pipe work includes necessary supports, foundation etc. to avoid any load & stress on turbocharger/ exhaust piping. The exhaust pipe shall be *run along the existing wall of the building duly clamped/*supported on independent structure for which, the design and Drawing for such structure shall be got approved from the Engineer-in-charge. Requisite shaft shall also be constructed by the agency and camouflaged by suitable means taking into account aesthetic aspects • Exhaust system should create minimum back pressure.

Number of bends should be kept minimum and smooth bends should be used to minimize back pressure. • Pipe sleeve of larger dia. should be used while passing the pipe through concrete wall. • Exhaust piping inside the Acoustic Enclosure/ Genset room should be lagged with asbestos rope along with aluminium sheet cladding/ insulated to avoid heat input to the room. • Exhaust flexible shall have its free length when it is installed. For bigger engines,2 flexible bellows can be used. • The exhaust outlet should be in the direction of prevailing winds and should not allow exhaust gases to enter air inlet/ windows etc. • When tail end is horizontal,45 Degree downward cut should be given at the end of the pipe to avoid rain water entry into exhaust piping. • When tail end is vertical, there should be rain trap to avoid rain water entry. lf rain cap is used, the distance between exhaust pipe and rain cap should be higher than diameter of pipe. Horizontal run of exhaust piping should slope downwards away from engine to the condensate trap.

Silencer should be installed with drain plug at bottom. Care should be taken to ensure that no carbon particles emitted due to exhaust leakage enters and deposits on alternator windings and on open connections. Support to Exhaust Piping : Exhaust piping should be supported in such manner that load of exhaust piping is not exerted to turbocharger. Air System- It is preferable to provide vacuum indicator with all engines to indicate hoked filter. Maximum air intake restrictions with clean and choked filters should be within prescribed limit as per OEM/manufacturer recommendation for the particular model of the engine. Gensets should be supplied with heavy duty air cleaners.

Design, Fabrication, Supply, install, testing & commissioning of compartmentalized Auto synchronizing with auto Load sharing cum load depended auto start & auto stop using DIEF or woodward or with inbuilt DG controller like PCC 3.3 AMF cum SYN controller with load sharing & speed and voltage control, control panel board suitable for 2x1010 KVA DG Sets, Fabricated out of dust & vermin proof with 2 mm thick CRCA sheet, powder coated, comprising of suitable busbar with Auto Syn + Auto Load Sharing Control Logic Relays, Safeties, Protections, Control MCB, Indication Lamps, Protections for Over/Under Speed, Over/Under Volt, Over Load, EFR, etc., with metering for Voltage, Current & Frequency , RPM, Running Hours with Audio visual alarm with fault reset and hooter accept facility wired in PVC tray using 1.5/1.0 Sq mm Control cable, along with Battery Charger with Auto Trickle and Boost Facility as per following specs . with suitable size C channel frame for Base, CPRI approved, provision for rated bus bar chamber with following features :-

2 Nos of 1600A 4P EDO type ACB and 1 No of 3200A 4P EDO type ACB, 2 Nos of Digital MFM Meter, 6 Set of CTs, 2 No of Composite AMF cum Synchronizing Relay having the Following Metering & Protection. a) Generator Measurements: V, I, HZ, KW, KVAR, KVA, PF, KWH, KVA Hr. b) Protection: 3 Phase integrated generator protections (U+F). c) IDMT over current + short current protection. d) Overload protection. e) Reverse power protection.

Supply and fixing of LED aviation obstruction light with IP 66 protection water clear poly carbonate including GI pipe 25mm dia 1 mtr long grouted with PCC complete/ binding with existing angle frame etc complete.

Supply and Installation of 2C x 1.5 sq.mm 1.1 KV XLPE, Cu.Ar. multistrand Cable etc complete.

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