SPECIAL REPAIR FOR REPLACEMENT OF OLD BUS DUCTS OF BLDG NO 376, 377, 378 AND 379 AT SUBROTO PARK

Supply, Installation, testing and commissioning of Sandwich Type Rising Mains / Bus Duct of capacity 400 Amps 25 KA SC for 1Sec capacity IK10, Confirming to IEC 61439 part 1 & part 6 and IEC 60862 and 3 phase 4 wire , 415 volts, 50Hz A.C including taking down of old bus duct. The Bus duct having following specification : (i) Rated operational Voltage :- 415 Volts AC (ii) Rated insulation voltage :- Min 1000 Vols AC (iii) Rated impulsive withstand Voltage (Uimp) :- Min 12 KV (iv) Rated Current : 400 Amps (v) Short time withstand Current (Icw) : 25 KA for 1 second (vi) Insulation Class :- class F insulation (155°C) (vii) Enclosure :- Sndwch type compact Enclosure fabricated from 2.0 mm thick sheet steel as per OEM design, duly powder coated(Interior and exterior),complete with all necessary covers, accessories and suitable Canopy at top end of bus duct. (viii) Degree of protection :- IP 54/IP 55 for complete bus duct.Tap-off Units/joints shall have suitable IP protection as per OEM tested design. (ix) Compliance standards :-EC 61439 (Part 1 & Part 6), IS 8623 and other relevant applicable standards. The complete Busbar Trunking System shall be type tested/certified as a complete assembly by the manufacturer. (x) Busbar Material :- aluminium (with IS 19501 or superior ) bus bars,complying with applicable standards and OEM tested design, complete with suitable insulation and jointing arrangement (xi) Rated Capacity of Bus Bar :- 400 Amps TPN,suitable for continuous operation at rated load (xii) Earthing Strip :-Continuous earthing arrangement with 2 Nos aluminium strips of 50x6 mm with suitable hardware, nut & bolts, one on each side, as per OEM design, including all necessary connections to the building earthing system. Suitable bimetallic/tinned arrangement shall be provided wherever required for connection between dissimilar metals

(xiii) Main Supporting structure :- Floor flanged for support, vertical spring hanger/fix hanger (as per OEM design), GI clamping brackets, angle iron brackets, steel fasteners, necessary joints & expansion joints. Flanged end with equalizer/shorting plate, end cover plate, horizontal & vertical bends, reducers, offsets and plug-in points as required. Suitable fire barrier/fire stopping arrangement shall be provided at each floor/wall/slab penetration as per approved OEM system. (xiv) Tapping Point :- One suitable tap-off/plug-in unit at each floor for G+8 Bldg. suitable MCCB/isolating arrangement, plug-in box, interlocking and all necessary accessories as per OEM design and approved rating. (xv) Jointing Arrangement : Complete with OEM approved jointing kits, joint covers, high-pressure jointing arrangement and torque-controlled hardware. All joints shall be tightened with calibrated torque tools and torque values shall be recorded.

(xvi) The quoted rate including making opening in RCC / Brick Masonary and repairing the same etc. as required. The rate shall also include all necessary supports, clamps, fasteners, lifting/handling arrangements, sealing, grouting, alignment and making good of all disturbed surfaces. (xvii) Type Tests reports like (i) Short Circuit Test (ii) Degree of Protection (iii) Temperature rise test of Rising main in CPRI / UL / ASTA accrediated lab will be submitted by contractor as per OEM. (xviii) The contractor shall submit approved manufacturer's installation drawings, single line diagram, short circuit withstand details, support details, tap-off schedule, jointing details before commencement of installation. Makes:- Schneider Electric, Seimens, Legrad,ABB and Lauritz Knudsen (L&T)

(v) Anything missed out above but technically required for proper operation of the Dus Duct is deemed to be included in the quoted rate. (vi)The quoted rate shall be inclusive of all labour for providing, maintaining, connecting, disconnecting and dismantling the standby supply arrangement. No extra payment shall be admissible on this account. (vii) The quoted rate shall include all testing, commissioning, OEM supervision, necessary tools & tackles, access arrangements, transportation within site and incidental works required for complete and satisfactory commissioning of the Rising Main/Bus Duct system.

Supply, Installation, testing and commissioning of End Feed Unit of capacity 400 Amps suitable for Bus duct rising main (OEM manufactured) Confirming to IS 8623 P-II suitable for Sandwich / Compact Air Insulated type for use on 3 phase 4 wire 415 volts, 50Hz A.C. supply made with 1.6mm thick steel sheet enclosure duly powder coated with provision of MCCB/ACB (but without MCCB/ACB), Interlocking feature complete with necessary joints including clamping brackets, angle iron bracket, steel fasteners, connecting to earthing system etc. as required and switchgear to be installed should be of same make as of BBT manufacturer. All as per pre approved by Engineer in charge. Makes:- Schneider Electric, Seimens, Legrad,ABB and Lauritz Knudsen (L&T) Note :- Taking down and Dismantling of Old unserviceable End user feed is deemed to be included in the Unit Rate quoted by contractor.

Supply, Installation, testing and commissioning of Plug in / Tap off Box of capacity 63 Amps and suitable for Sandwich type bus bar trunking (OEM manufactured) Confirming to IS 8623 P-II & IEC-60947-2-2000 for use on 3 phase 4 wire 415 volts, 50Hz A.C. supply made with 1.6mm thick steel sheet enclosure duly powder coated with provision of MCB/MCCB / ACB (but without MCB/MCCB/ACB) with Interlocking complete with necessary joints including clamping brackets, angle iron bracket, steel fasteners, connecting to earthing system etc. as required and switchgear to be installed should be of same make as of BBT manufacturer. . All as per pre approved by Engineer in charge. Makes:- Schneider Electric, Seimens, Legrad,ABB and Lauritz Knudsen (L&T) Note :- Taking down and Dismantling of Old unserviceable Tap off box is deemed to be included in the Unit Rate quoted by contractor.

Design, supply, install, testing and commissioning factory made LT Panel Outdoor type, cubical enclosure compartmentalized external and internal mirror type brushed suitable for highly corrosive environment, high creep resistance, better mechanical properties like ductility, yield strength, hardness etc.The enclosure shall be made of 2.00 mm thick stainless steel sheet SS 316 sheet. The fixing of Front doors shall be on SS hinges with anti-theft provision. All fabrication/welding shall be done with TIG/MIG or as approved by Engineer in charge suitable for SS 316. Sliding handle and locking arrangement front and rear both side. Enclosure shall be suitable for AC supply system 415 volts, 3 phase, 4 wire, 50 Hz. Degree of protection shall be IP-54. The enclosure shall have provision of cable entry. Cable entry from bottom side including internal wiring with PVC insulated solid, copper wire, 1100 volts grade. The panel shall consist of 1000 Amps rating TPN aluminium bus bars and shall be provided with colour coded heat shrinkable sleeves.

The panel shall be provided with separate compartments for each switchgear, including instrumentation such as Multi Function meter, phase indicating lamps etc with double stud hinged door, Front side openable with Cable alley on Both side of panel of suitable size not less than 250 mm with locking arrangement including interlocking with switch gears and suitable for 1100 Volts grade, 3 Phase, 415 Volts, 50 cycles, AC Supply and to with stand short circuit fault level of not less than 10KA. The panel shall be fixed with angle iron frame made of angles of size 50 X 50 X 6mm, embedded 200 mm below in PCC 1:2:4, Type B-1 using 20mm grade stone aggregate on floor and comprising the following:

Incomimg:- (a) MCCB 400 Amp, 4 pole rupturing capacity 36 KA at 415 volt Ics = 100% Icu - 01 Nos with RHOM Makes:- Schneider Electric, Seimens, Legrad and Lauritz Knudsen (L&T) (b) Digital Multifunction Meter to measure KWh, PF, VLL, VLN, W, VA ,V, I including CT and PT complete with all electrical connection - 01 No (c) LED type Phase indicator lamps (R, Y, B) - 1 Set Outgoings:- (a) MCCB 63 Amp, 3 pole rupturing capacity 16 KA at 415 volt Ics = 100% Icu - 08 Nos With RHOM Makes:- Schneider Electric, Seimens, Legrad and Lauritz Knudsen (L&T) (b) Control MCB 6 Amps SP-03 Nos

Supply, lay, joint, test and commission LT under ground cable of size 185 sqmm 3.5 core ,1100 V grade, XLPE insulated, armoured and sheathed with Aluminium conductor including cable glands, lugs, jointing materials etc laid in trenches / floors / ducts complete all as specified and directed.