e-NIT No.23 / EnM (WEST)/ 2020-21, Item No.10

Supply of 16 Meter high mast LED light system with its all accessories as per following technical structure details: Height of Mast 16 Mtr No of Section Two Section Material Construction As per BS-EN 10025 :1993 or equiv. IS Thickness of the section Top: 3 mm (Minimum), Bottom: 4 mm (Minimum) No. of Longitudinal welds / section One No of Circumferential welds/section None Length of Individual Section Suitable to design Cross Section of Mast 20-sided polygon continuously tapered telescopically joint as per BS 5135 orequivalent IS Base Diameter and Top Diameter Suitable to design Type of joints Stress fit at site Length of Overlap Minimum overlap distance shall be 1.5 times the diameter at penetration. Metal Protection System Hot dip galvanized both inside & outside conforming to IS 4759-1984, IS-2629-1985, IS-2633-1972 Average thickness of galvanization As per BSEN ISO 1461 Size of opening and door base Suitable to design to accommodate drive, cable, plug etc. & weather protected (IP54) Type of Locking arrangement Weather and Vandal Resistant with heavy duty lock. Diameter of Base Plate Suitable to design Thickness of base plate Suitable to design Lightning protection finial GI single spike of suitable length to protectlightning with provision ofearthing connection. Aviation Obstruction Light Top of the Mast fixed on the LanternCarriage. DYNAMIC LOADING AS PREVAILING AT SITE Max. wind speed, Max. gust speed time, Height above ground level, these two factors are measured. Factor of safety for wind load and another load As per IS 875 part-3-1987 & TR-7, 2000 of ILE Relevant to the site as per IS 875-Part-3, As per IS LANTERN CARRIAGE Material of construction, Diameter of carriage ring (mm) Construction Number of joints Buffer between carriage & masts Load carrying capacity Total weight of assembly with fittings Number of fittings. Type of fittings/fixture. Hot dip Galvanised steel, PVC sleeve on carriage or any other better arrangement. To take fitting and fixtures load safely. As per qty. of luminaries Suitable to carry the 6 nos. fixtures symmetrically Suitable for 6x200W luminaries with lumen efficacy of 90 lm/w with electronic ballast and over all power factor of 0.95 conforming to IP- 66 for outdoor lighting. The high Mast light shall be able to provide avg. Lux of 20 & uniformity ratio of 0.4 at road level. WINCH Type of winch Gear Ratio Capacity Method of operation Lubrication arrangement Type of lubricant Double drum type as per IS-807. Suitable to design for optimum mechanical advantage. To lift the design load. Manual and Electrical both. Permanent oil bath SAE 90. /SAE 140 STAINLESS STEEL WIRE ROPE Grade Number of ropes Construction Centre core material Diameter (mm) Braking load capacity AISI 316 2 Continuous ropes suitable to winch and lantern carriage with no intermediate joints. 7 / 19 and shall have factor of safety not less than five times the safe working load. Stainless Steel core 6 mm (minimum). As per TR-7 as referred earlier. 5 or more for system at full load.

Designing & casting of suitable open raft type RCC shallow foundation with 20 grade concert for high as per recommendation of the manufacture adopting the safe soil bearing capacity of site at 10 T/sq. mtr at 2 Mtr below FGL including positioning of suitable foundation steel nut-bolts washer, Pdg. straightening cutting, bending rings strictly as per bar bending schedule & drawing complete as PVC pipe of 90mm dia for cable entry as desired level i/c supplying and casting. The foundation will be designed as IS-456, 875 and as per direction of engineer-in-charge.

Providing/Fixing of 200 Watt LEDflood light luminaries in the carriage lantern of high mast. Make: Bajaj/Havells

SITC of integral LED aviation light fitting comprising of aluminum housing with polycarbonate enclosure and LED’s complete as reqd.

SITC of outdoor stand mounted feeder pillar 3 PH, 415 Volts.± 12.5% Rating of the Motor suitable to the design with control & torque limiting protection Single speed or Variable speed. Photoelectric light sensitive and astronomical ON OFF timers to switch for automatic controlling the lights at predetermined time and as per ambient lighting level and other accessories with protection and suitable arrangement to raise or lower the lantern carriage. Made of minimum 14SWG CRCA sheet metal with 32 A TPN MCB incomer, single dial time switch, 45 A TP contractor for automatic switching of luminaries power tool control with 2 nos. 9 A contactors and raise lower push button, incoming 35 sq mm and outgoing 16 & 205 sq. mm terminal.

Supplying of XLPE aluminum conductor armored cable as per ISI codes 7098: PT 1: 1998 in the existing pipe as reqd. (a) 4 x 25 sq. mm from pole to main supply & panel make: Grandlay/All DJB Approved.

Laying of 35 sq. mm PVC insulated and PVC Sheathed / XLPE power cable of 1.1 KV grade of following size direct in ground including excavation, sand cushioning protective covering and refilling the trench etc. as reqd.

Earthing with GI earth pipe 4.5 mtr. long 40mm dia i/c accessories and providing masonry enclosure with cover plate having locking arrangement and watering pipe etc. with charcoal and salt as reqd. The job also includes three Nos. Earthing terminals using 12 mm. diameter stainless steel bolt shall be provided at a convenient location on the base of the mast, one exclusively for the lightning conductor & other two for earthing the mast as per IS:3043-1987.

Installation of the high mast pole with help of crane & heavy duty manual labour at site on RCC foundation, installation of electric panel by grouting with foundation bolt. The job also includes fixing and making connections between electrical equipment’s and testing the complete electrical equipment on load etc.

ztp corporation

DEV ENGINEERS

HARI ELECTRICAL CO.

Gupta Brothers