Replacement of very old Non-Essential ACBs Panel and provision of lighting arrester with surge counter at Tezpur Airport.

Design, fabrication (TTA assembly), Supply,Installation, testing & commissioning of both side extendable, floor mounted type, fully compartmentalized, front operated, back openable, LT cubicle panel suitable for incoming 2 run of 3 phase, 4 wire, 415 V, 50 Hz, ,1000 Amp.rating aluminium/copper busbar and outgoing power cables entry from bottom and top opening for communication cables, the switchboards shall be of Single front design as specified as per IS Standard of TTA Panel & amended upto -1 & 2 with Internal Arc Containment as per IEC 61641 for 50KA for 0.3 sec or as per design whichever is higher, suitable for Seismic Zone III /IV/ V as per IS 1893 part-1, Form of separation shall be of Form 4B as per IS/of TTA Panel-1&2 with Bus Bars rating of 1000 A, 3phase with 100%Electrolytic grade Neutral Aluminium bus bar- 2 set, i Incomer- Air Circuit Breaker(ACB) 2 Nos. Incomer and 1 No. Bus coupler -1000 Amp, 415V (Uimp=8KV), 50KA (Icu @415V=Ics=Icw for 1 sec) 4 Pole EDO (Electrically operated Draw-out) type microprocessor controlled Modular ACB with LSIG release (zone: O/L, S/C, Instantaneous & ground fault),1 set for 3 nos. ACBs- Electrical interlocking so that only two ACBs can be made ON at a time. ii. Outgoings MCCBs: a)6 nos.-400 Amp., 5 nos.- 250 Amps; 5 nos.- 125 Amps, 02 nos.-63 Amp.& 01 nos.-100 Amps. 35kA Fault current breaking capacity, 4 pole MCCB with Mcroprocessor controlled with O/C, S/C & E/F protections, CTs and LED indication for each phases and OFF, ON & TRIP. Digital LED MFM with RS-485 for metering records and status of each MCCB to be shown on SCADA Platform, as per specifications attached and as directed by Engineer-InCharge.400X400mm separate or as OEM design, visible compartment on both side of the panel to accommodate SPDs backed with MCBs. b) BUS-BAR CHAMBERS:1000A TPN aluminium conductor bus bar of suitable length for main suitable capacity for branches including connection etc.complete as required. As per Technical specification enclosed in tender documents.

Dismantling of existing 3-phase, 415V, 50 HZ AC supply old Non essential LT panel consisting of 3 nos., 3- poles,800 Amps MDO type ACBs, 400 Amp,250 Amp.,160Amps,100Amp.s 63 Amp.MCCBs along with all the eletrical accessories, disconnect of 2 sets of 800-1000 Amp. Aluminium Bus bars, disconnect of various sizes of cable end termination & earthing terminals Including shifting of dismantled material from LT panel power house to AAI store complete as required.

Supply, Installation, Testing and Commissioning of 1000 amps 50KA pre-fabricated sandwiched type TPN aluminium bus ductibg (IP54) alongwith earth bus,100% N including straight feeder,horizontal & vertical bends, flange ends tinned copper braided flexible connections, adopter bos with aluminium limks/end covers, hangers and all other supporting and fixing arrangements complete as per actual site requirement (Between transformer and LT panel)

Supplying and making end termination with brass compression gland and aluminium lugs for following size of PVC insulated and PVC sheathed / XLPE aluminium conductor cable of 1.1 KV grade as required. A) 3½ X 300 sq. mm (70mm)

Supplying and making end termination with brass compression gland and aluminium lugs for following size of PVC insulated and PVC sheathed / XLPE aluminium conductor cable of 1.1 KV grade as required. A) 3½ X 240 sq. mm (62mm)

Supplying and making end termination with brass compression gland and aluminium lugs for following size of PVC insulated and PVC sheathed / XLPE aluminium conductor cable of 1.1 KV grade as required. A) 3½ X 185 sq. mm (57mm)

Supplying and making end termination with brass compression gland and aluminium lugs for following size of PVC insulated and PVC sheathed / XLPE aluminium conductor cable of 1.1 KV grade as required. A)3½ X 120 sq. mm (45mm)

Earthing with G.I. earth plate 600 mm x 600 mm x 6 mm thick including accessories and providing masonry enclosure with cover plate having locking arrangement and watering pipe of 2.7 metre long etc. with charcoal/coke and salt as required.

Providing and fixing 25mm x 5mm G.I. strip in 40mm dia G.I. pipe from earth electrode including connection with G.I. nut, bolt, stpring washer excavation and re-filling etc. as required.

Providing & fixing 25 mm x 5 mm G.I. strip on surface or in recess for connections etc. as required.

Supplying and laying 25 mm x 5 mm G.I. strip at 0.50 meter below ground as strip electrode, including connection / terminating with G.I. nut, bolt, spring washer etc. as required. (joining shall be done by overlapping and with 2 sets of G.I. nut bolt & spring washer spaced at 50 mm)

Earthing with G.I. earth pipe 4.5 metre long, 40 mm dia including accessories, and providing masonry enclosure with cover plate having locking arrangement and watering pipe etc. (but without charcoal/ coke and salt ) as required.

Supplying and laying 6 SWG G.I. wire at 0.50 metre below ground level for conductor earth electrode, including connection/ termination with GI thimble etc. as required.

Providing and laying earth connection from earth electrode with 6 SWG dia G.I. Wire in 15 mm dia G.I. pipe from earth electrode including connection with G.I. thimble excavation and re-filling as required.

Providing and fixing 6 SWG dia G.I. wire on surface or in recess for loop earthing as required.

Providing and fixing 6 SWG dia G.I. wire on surface or in recess for loop earthing along with existing surface/ recessed conduit/ submain wiring/ cable as required.

Earthing with copper earth plate 600 mm x 600 mm x 3 mm thick including accessories and providing masonry enclosure with cover plate having locking arrangement and watering pipe of 2.7 meter long etc. with charcoal/coke and salt as required.

Providing and fixing 25mm x 5mm copper strip in 40 mm dia G.I. pipe from earth electrode including connection with brass nut, bolt, spring washer excavation and re-filling etc. as required.

Providing and fixing 25mm x 5mm copper strip on surface or in recess for connections etc. as required.

Supplying and laying 25 mm X 5 mm copper strip at 0.50 metre below ground as strip earth electrode, including connection / terminating with nut, bolt, spring, washer etc. as required. (Jointing shall be done by overlapping and with 2 sets of brass nut bolt & spring washer spaced at 50mm).

Providing and fixing of lightning conductor finial, made of 25 mm dia 1000 mm long, copper . tube, having single prong at top, with 85 mm dia 6 mm thick copper base plate including holes etc. complete as required.

Fixing of lightning conductor finial (cooper single prong) with base plate including holes etc. complete as required.

Jointing copper (with another copper tape, base of the finial or any other metallic object) by riveting / nut bolting/ sweating and soldering etc as required.

Providing and fixing copper tape 20 mm X 3 mm thick on parapet or surface of wall for lightning conductor complete as required.(For horizontal run).

Providing and fixing copper tape 20 mm X 3 mm thick on parapet or surface of wall for lightning conductor complete as required.(For vertical run).

Providing and fixing testing joint, made of 20 mm X 3 mm thick copper strip, 125 mm long, with 4 nos. of G.I. bolts, nuts, chuck nuts and spring washers etc. complete as required.

Providing and laying copper tape 25mm X 5 mm from earth electrode directly in ground as required.

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